Use Drawer in Settings app

- get rid of PreferenceActivity as much as we can and use fragments instead
- add Drawer widget
- add Dashboard high level entry into the Drawer (but this is work in progress and would be done in another CL)
- add bypass of fragment's Header  validation when launched from the Drawer but *force* validation if external
call thru an Intent

Be aware that WifiPickerActivity should remain for now a PreferenceActivity. It is used by SetupWizard and should
not trigger running the SettingsActivity's header building code. SetupWizard is a Home during the provisionnig process
and then deactivate itself as a Home but would make the Home header to appear in the Drawer (because momentarily we
would have two Home).

Also, verified that:

- the WiFi settings still work when called from SetupWizard
- when you have multiple Launchers, the Home header will appear in the list of Headers in the Drawer

Change-Id: I407a5e0fdd843ad7615d3d511c416a44e3d97c90

76 files changed, 2466 insertions, 1485 deletions

diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index eba2303..ec01534 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -79,8 +79,9 @@
         <!-- Settings -->
 
         <activity android:name="Settings"
-                android:label="@string/settings_label_launcher"
+                  android:uiOptions="splitActionBarWhenNarrow"
                 android:taskAffinity="com.android.settings"
+                android:label="@string/settings_label_launcher"
                 android:launchMode="singleTask">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
@@ -1535,10 +1536,13 @@
             </intent-filter>
         </activity>
 
-        <activity android:name="com.android.settings.accounts.ChooseAccountActivity"
+        <activity android:name="com.android.settings.Settings$ChooseAccountActivity"
             android:label="@string/header_add_an_account"
             android:configChanges="orientation|keyboardHidden|screenSize"
-            android:theme="@android:style/Theme.Holo.DialogWhenLarge"/>
+            android:theme="@android:style/Theme.Holo.DialogWhenLarge">
+            <meta-data android:name="com.android.settings.FRAGMENT_CLASS"
+                       android:value="com.android.settings.accounts.ChooseAccountFragment" />
+        </activity>
 
         <activity android:name=".CryptKeeper"
                   android:immersive="true"
diff --git a/res/drawable-hdpi/ic_drawer_am.png b/res/drawable-hdpi/ic_drawer_am.png
new file mode 100644
index 0000000..ff7b1de
--- /dev/null
+++ b/res/drawable-hdpi/ic_drawer_am.png
diff --git a/res/drawable-mdpi/ic_drawer_am.png b/res/drawable-mdpi/ic_drawer_am.png
new file mode 100644
index 0000000..fb681ba
--- /dev/null
+++ b/res/drawable-mdpi/ic_drawer_am.png
diff --git a/res/drawable-xhdpi/ic_drawer_am.png b/res/drawable-xhdpi/ic_drawer_am.png
new file mode 100644
index 0000000..b9bc3d7
--- /dev/null
+++ b/res/drawable-xhdpi/ic_drawer_am.png
diff --git a/res/drawable/ic_drawer.xml b/res/drawable/ic_drawer.xml
new file mode 100644
index 0000000..f228d47
--- /dev/null
+++ b/res/drawable/ic_drawer.xml
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+/*
+ * Copyright 2014, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+-->
+
+<bitmap xmlns:android="http://schemas.android.com/apk/res/android"
+        android:src="@drawable/ic_drawer_am"
+        android:autoMirrored="true">
+</bitmap>
+
diff --git a/res/layout/dashboard.xml b/res/layout/dashboard.xml
new file mode 100644
index 0000000..547533a
--- /dev/null
+++ b/res/layout/dashboard.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2014 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/dashboard"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <TextView android:id="@+id/dash_text"
+              android:layout_width="wrap_content"
+              android:layout_height="wrap_content"
+              android:layout_gravity="center"
+              android:text="@string/dashboard_wip"
+            />
+
+</FrameLayout>
diff --git a/res/layout/settings_main.xml b/res/layout/settings_main.xml
new file mode 100644
index 0000000..f34ece8
--- /dev/null
+++ b/res/layout/settings_main.xml
@@ -0,0 +1,81 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+/*
+** Copyright 2014, The Android Open Source Project
+**
+** Licensed under the Apache License, Version 2.0 (the "License");
+** you may not use this file except in compliance with the License.
+** You may obtain a copy of the License at
+**
+**     http://www.apache.org/licenses/LICENSE-2.0
+**
+** Unless required by applicable law or agreed to in writing, software
+** distributed under the License is distributed on an "AS IS" BASIS,
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+** See the License for the specific language governing permissions and
+** limitations under the License.
+*/
+-->
+
+<android.support.v4.widget.DrawerLayout
+        xmlns:android="http://schemas.android.com/apk/res/android"
+        android:id="@+id/drawer_layout"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent">
+
+    <LinearLayout
+              android:orientation="vertical"
+              android:layout_height="match_parent"
+              android:layout_width="match_parent">
+
+        <android.preference.PreferenceFrameLayout android:id="@+id/prefs"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+        />
+
+        <RelativeLayout android:id="@+id/button_bar"
+                        android:layout_height="wrap_content"
+                        android:layout_width="match_parent"
+                        android:layout_weight="0"
+                        android:visibility="gone">
+
+            <Button android:id="@+id/back_button"
+                    android:layout_width="150dip"
+                    android:layout_height="wrap_content"
+                    android:layout_margin="5dip"
+                    android:layout_alignParentStart="true"
+                    android:text="@*android:string/back_button_label"
+                    />
+            <LinearLayout
+                    android:orientation="horizontal"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_alignParentEnd="true">
+
+                <Button android:id="@+id/skip_button"
+                        android:layout_width="150dip"
+                        android:layout_height="wrap_content"
+                        android:layout_margin="5dip"
+                        android:text="@*android:string/skip_button_label"
+                        android:visibility="gone"
+                        />
+
+                <Button android:id="@+id/next_button"
+                        android:layout_width="150dip"
+                        android:layout_height="wrap_content"
+                        android:layout_margin="5dip"
+                        android:text="@*android:string/next_button_label"
+                        />
+            </LinearLayout>
+        </RelativeLayout>
+
+    </LinearLayout>
+
+    <ListView android:id="@+id/headers_drawer"
+              android:layout_width="300dp"
+              android:layout_height="match_parent"
+              android:layout_gravity="start"
+              android:background="#ff333333"/>
+
+</android.support.v4.widget.DrawerLayout>
diff --git a/res/values-sw720dp/dimens.xml b/res/values-sw720dp/dimens.xml
index 9c6cc25..06a7197 100644
--- a/res/values-sw720dp/dimens.xml
+++ b/res/values-sw720dp/dimens.xml
@@ -20,4 +20,9 @@
     <integer name="keyguard_appwidget_picker_cols">2</integer>
     <dimen name="keyguard_appwidget_picker_width">720dip</dimen>
     <dimen name="settings_side_margin">32dp</dimen>
+
+    <!-- Weight of the left pane in a multi-pane preference layout. -->
+    <integer name="preferences_left_pane_weight">1</integer>
+    <!-- Weight of the right pane in a multi-pane preference layout. So the split is 1:2 -->
+    <integer name="preferences_right_pane_weight">2</integer>
 </resources>
diff --git a/res/values/dimens.xml b/res/values/dimens.xml
index 1294483..3581d6a 100755
--- a/res/values/dimens.xml
+++ b/res/values/dimens.xml
@@ -73,4 +73,9 @@
     <dimen name="captioning_preview_height">200dp</dimen>
 
     <dimen name="settings_side_margin">@*android:dimen/preference_fragment_padding_side</dimen>
+
+    <!-- Weight of the left pane in a multi-pane preference layout. -->
+    <integer name="preferences_left_pane_weight">4</integer>
+    <!-- Weight of the right pane in a multi-pane preference layout. So the split is 40:60 -->
+    <integer name="preferences_right_pane_weight">6</integer>
 </resources>
diff --git a/res/values/strings.xml b/res/values/strings.xml
index 4fc708f..6366cc5 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -4982,4 +4982,15 @@
     <string name="enable_nfc">NFC is not enabled and is required for NFC Unlock. Please turn on NFC.</string>
     <string name="ok">NFC Settings</string>
 
+    <!--Drawer strings-->
+    <!-- Text to describe the "open drawer" action for accessibility purpose [CHAR LIMIT=50] -->
+    <string name="drawer_open">Open navigation drawer</string>
+    <!-- Text to describe the "close drawer" action for accessibility purpose [CHAR LIMIT=50] -->
+    <string name="drawer_close">Close navigation drawer</string>
+
+    <!--Dashboard strings-->
+    <!-- Text to describe the dashboard entry into the Drawer [CHAR LIMIT=16] -->
+    <string name="dashboard_title">Overview</string>
+    <string name="dashboard_wip" translatable="false">Overview - work in progress\n\nUse the Drawer on the left to see the settings list</string>
+
 </resources>
diff --git a/res/values/styles.xml b/res/values/styles.xml
index eee2cd9..3416b2c 100644
--- a/res/values/styles.xml
+++ b/res/values/styles.xml
@@ -117,6 +117,12 @@
         <item name="android:scrollbarStyle">outsideOverlay</item>
     </style>
 
+    <style name="SettingsPreferenceHeaderPanel" parent="@*android:style/PreferenceHeaderPanel">
+    </style>
+
+    <style name="SettingsPreferenceHeaderList" parent="@*android:style/PreferenceHeaderList">
+    </style>
+
     <style name="VertDivider">
         <item name="android:layout_width">@dimen/vert_divider_width</item>
         <item name="android:layout_height">fill_parent</item>
diff --git a/res/xml/device_info_settings.xml b/res/xml/device_info_settings.xml
index 07abe41..23d4abc 100644
--- a/res/xml/device_info_settings.xml
+++ b/res/xml/device_info_settings.xml
@@ -35,10 +35,8 @@
         <!-- Device status - launches activity -->
         <PreferenceScreen android:key="status_info"
                 android:title="@string/device_status" 
-                android:summary="@string/device_status_summary">
-            <intent android:action="android.intent.action.MAIN"
-                    android:targetPackage="com.android.settings"
-                    android:targetClass="com.android.settings.deviceinfo.Status" />
+                android:summary="@string/device_status_summary"
+                android:fragment="com.android.settings.deviceinfo.Status">
         </PreferenceScreen>
 
         <!-- Legal Information -->
diff --git a/res/xml/settings_headers.xml b/res/xml/settings_headers.xml
index 8744328..8b512fc 100644
--- a/res/xml/settings_headers.xml
+++ b/res/xml/settings_headers.xml
@@ -22,6 +22,13 @@
     <header android:id="@+id/wireless_section"
         android:title="@string/header_category_wireless_networks" />
 
+    <!-- Dashboard -->
+    <!--TODO: android:icon="@drawable/ic_settings_dashboard"-->
+    <header
+        android:id="@+id/dashboard"
+        android:fragment="com.android.settings.dashboard.DashboardSummary"
+        android:title="@string/dashboard_title" />
+
     <!-- Wifi -->
     <header
         android:id="@+id/wifi_settings"
diff --git a/src/com/android/settings/ApnEditor.java b/src/com/android/settings/ApnEditor.java
index 2da2d76..70f03ae 100644
--- a/src/com/android/settings/ApnEditor.java
+++ b/src/com/android/settings/ApnEditor.java
@@ -16,6 +16,7 @@
 
 package com.android.settings;
 
+import android.app.Activity;
 import android.app.AlertDialog;
 import android.app.Dialog;
 import android.content.ContentUris;
@@ -31,21 +32,18 @@ import android.preference.EditTextPreference;
 import android.preference.ListPreference;
 import android.preference.CheckBoxPreference;
 import android.preference.Preference;
-import android.preference.PreferenceActivity;
 import android.provider.Telephony;
 import android.telephony.TelephonyManager;
 import android.util.Log;
 import android.view.KeyEvent;
 import android.view.Menu;
+import android.view.MenuInflater;
 import android.view.MenuItem;
 
-import com.android.internal.telephony.Phone;
-import com.android.internal.telephony.PhoneConstants;
-import com.android.internal.telephony.RILConstants;
 import com.android.internal.telephony.TelephonyProperties;
 
 
-public class ApnEditor extends PreferenceActivity
+public class ApnEditor extends SettingsPreferenceFragment
         implements SharedPreferences.OnSharedPreferenceChangeListener,
                     Preference.OnPreferenceChangeListener {
 
@@ -148,7 +146,7 @@ public class ApnEditor extends PreferenceActivity
 
 
     @Override
-    protected void onCreate(Bundle icicle) {
+    public void onCreate(Bundle icicle) {
         super.onCreate(icicle);
 
         addPreferencesFromResource(R.xml.apn_editor);
@@ -188,7 +186,7 @@ public class ApnEditor extends PreferenceActivity
 
         mRes = getResources();
 
-        final Intent intent = getIntent();
+        final Intent intent = getActivity().getIntent();
         final String action = intent.getAction();
 
         mFirstTime = icicle == null;
@@ -208,24 +206,24 @@ public class ApnEditor extends PreferenceActivity
             // original activity if they requested a result.
             if (mUri == null) {
                 Log.w(TAG, "Failed to insert new telephony provider into "
-                        + getIntent().getData());
+                        + getActivity().getIntent().getData());
                 finish();
                 return;
             }
 
             // The new entry was created, so assume all will end well and
             // set the result to be returned.
-            setResult(RESULT_OK, (new Intent()).setAction(mUri.toString()));
+            getActivity().setResult(Activity.RESULT_OK, (new Intent()).setAction(mUri.toString()));
 
         } else {
             finish();
             return;
         }
 
-        mCursor = managedQuery(mUri, sProjection, null, null);
+        mCursor = getActivity().getContentResolver().query(mUri, sProjection, null, null, null);
         mCursor.moveToFirst();
 
-        mTelephonyManager = (TelephonyManager) getSystemService(TELEPHONY_SERVICE);
+        mTelephonyManager = (TelephonyManager) getSystemService(Activity.TELEPHONY_SERVICE);
 
         fillUi();
     }
@@ -441,8 +439,8 @@ public class ApnEditor extends PreferenceActivity
     }
 
     @Override
-    public boolean onCreateOptionsMenu(Menu menu) {
-        super.onCreateOptionsMenu(menu);
+    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
+        super.onCreateOptionsMenu(menu, inflater);
         // If it's a new APN, then cancel will delete the new entry in onPause
         if (!mNewApn) {
             menu.add(0, MENU_DELETE, 0, R.string.menu_delete)
@@ -452,7 +450,6 @@ public class ApnEditor extends PreferenceActivity
             .setIcon(android.R.drawable.ic_menu_save);
         menu.add(0, MENU_CANCEL, 0, R.string.menu_cancel)
             .setIcon(android.R.drawable.ic_menu_close_clear_cancel);
-        return true;
     }
 
     @Override
@@ -477,20 +474,7 @@ public class ApnEditor extends PreferenceActivity
     }
 
     @Override
-    public boolean onKeyDown(int keyCode, KeyEvent event) {
-        switch (keyCode) {
-            case KeyEvent.KEYCODE_BACK: {
-                if (validateAndSave(false)) {
-                    finish();
-                }
-                return true;
-            }
-        }
-        return super.onKeyDown(keyCode, event);
-    }
-
-    @Override
-    protected void onSaveInstanceState(Bundle icicle) {
+    public void onSaveInstanceState(Bundle icicle) {
         super.onSaveInstanceState(icicle);
         if (validateAndSave(true)) {
             icicle.putInt(SAVED_POS, mCursor.getInt(ID_INDEX));
@@ -598,12 +582,12 @@ public class ApnEditor extends PreferenceActivity
     }
 
     @Override
-    protected Dialog onCreateDialog(int id) {
+    public Dialog onCreateDialog(int id) {
 
         if (id == ERROR_DIALOG_ID) {
             String msg = getErrorMsg();
 
-            return new AlertDialog.Builder(this)
+            return new AlertDialog.Builder(getActivity())
                     .setTitle(R.string.error_title)
                     .setPositiveButton(android.R.string.ok, null)
                     .setMessage(msg)
@@ -613,19 +597,6 @@ public class ApnEditor extends PreferenceActivity
         return super.onCreateDialog(id);
     }
 
-    @Override
-    protected void onPrepareDialog(int id, Dialog dialog) {
-        super.onPrepareDialog(id, dialog);
-
-        if (id == ERROR_DIALOG_ID) {
-            String msg = getErrorMsg();
-
-            if (msg != null) {
-                ((AlertDialog)dialog).setMessage(msg);
-            }
-        }
-    }
-
     private void deleteApn() {
         getContentResolver().delete(mUri, null, null);
         finish();
diff --git a/src/com/android/settings/ApnSettings.java b/src/com/android/settings/ApnSettings.java
index 3fbb5e3..294d50f 100644
--- a/src/com/android/settings/ApnSettings.java
+++ b/src/com/android/settings/ApnSettings.java
@@ -33,12 +33,12 @@ import android.os.HandlerThread;
 import android.os.Looper;
 import android.os.Message;
 import android.preference.Preference;
-import android.preference.PreferenceActivity;
 import android.preference.PreferenceGroup;
 import android.preference.PreferenceScreen;
 import android.provider.Telephony;
 import android.util.Log;
 import android.view.Menu;
+import android.view.MenuInflater;
 import android.view.MenuItem;
 import android.widget.Toast;
 
@@ -49,7 +49,7 @@ import com.android.internal.telephony.TelephonyProperties;
 
 import java.util.ArrayList;
 
-public class ApnSettings extends PreferenceActivity implements
+public class ApnSettings extends SettingsPreferenceFragment implements
         Preference.OnPreferenceChangeListener {
     static final String TAG = "ApnSettings";
 
@@ -116,7 +116,7 @@ public class ApnSettings extends PreferenceActivity implements
     }
 
     @Override
-    protected void onCreate(Bundle icicle) {
+    public void onCreate(Bundle icicle) {
         super.onCreate(icicle);
 
         addPreferencesFromResource(R.xml.apn_settings);
@@ -127,10 +127,10 @@ public class ApnSettings extends PreferenceActivity implements
     }
 
     @Override
-    protected void onResume() {
+    public void onResume() {
         super.onResume();
 
-        registerReceiver(mMobileStateReceiver, mMobileStateFilter);
+        getActivity().registerReceiver(mMobileStateReceiver, mMobileStateFilter);
 
         if (!mRestoreDefaultApnMode) {
             fillList();
@@ -140,14 +140,14 @@ public class ApnSettings extends PreferenceActivity implements
     }
 
     @Override
-    protected void onPause() {
+    public void onPause() {
         super.onPause();
 
-        unregisterReceiver(mMobileStateReceiver);
+        getActivity().unregisterReceiver(mMobileStateReceiver);
     }
 
     @Override
-    protected void onDestroy() {
+    public void onDestroy() {
         super.onDestroy();
 
         if (mRestoreDefaultApnThread != null) {
@@ -178,7 +178,7 @@ public class ApnSettings extends PreferenceActivity implements
                 String key = cursor.getString(ID_INDEX);
                 String type = cursor.getString(TYPES_INDEX);
 
-                ApnPreference pref = new ApnPreference(this);
+                ApnPreference pref = new ApnPreference(getActivity());
 
                 pref.setKey(key);
                 pref.setTitle(name);
@@ -207,8 +207,8 @@ public class ApnSettings extends PreferenceActivity implements
     }
 
     @Override
-    public boolean onCreateOptionsMenu(Menu menu) {
-        super.onCreateOptionsMenu(menu);
+    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
+        super.onCreateOptionsMenu(menu, inflater);
         menu.add(0, MENU_NEW, 0,
                 getResources().getString(R.string.menu_new))
                 .setIcon(android.R.drawable.ic_menu_add)
@@ -216,7 +216,6 @@ public class ApnSettings extends PreferenceActivity implements
         menu.add(0, MENU_RESTORE, 0,
                 getResources().getString(R.string.menu_restore))
                 .setIcon(android.R.drawable.ic_menu_upload);
-        return true;
     }
 
     @Override
@@ -308,9 +307,9 @@ public class ApnSettings extends PreferenceActivity implements
                     fillList();
                     getPreferenceScreen().setEnabled(true);
                     mRestoreDefaultApnMode = false;
-                    dismissDialog(DIALOG_RESTORE_DEFAULTAPN);
+                    removeDialog(DIALOG_RESTORE_DEFAULTAPN);
                     Toast.makeText(
-                        ApnSettings.this,
+                        getActivity(),
                         getResources().getString(
                                 R.string.restore_default_apn_completed),
                         Toast.LENGTH_LONG).show();
@@ -341,20 +340,14 @@ public class ApnSettings extends PreferenceActivity implements
     }
 
     @Override
-    protected Dialog onCreateDialog(int id) {
+    public Dialog onCreateDialog(int id) {
         if (id == DIALOG_RESTORE_DEFAULTAPN) {
-            ProgressDialog dialog = new ProgressDialog(this);
+            getPreferenceScreen().setEnabled(false);
+            ProgressDialog dialog = new ProgressDialog(getActivity());
             dialog.setMessage(getResources().getString(R.string.restore_default_apn));
             dialog.setCancelable(false);
             return dialog;
         }
         return null;
     }
-
-    @Override
-    protected void onPrepareDialog(int id, Dialog dialog) {
-        if (id == DIALOG_RESTORE_DEFAULTAPN) {
-            getPreferenceScreen().setEnabled(false);
-        }
-    }
 }
diff --git a/src/com/android/settings/ButtonBarHandler.java b/src/com/android/settings/ButtonBarHandler.java
index d61da13..85e39d1 100644
--- a/src/com/android/settings/ButtonBarHandler.java
+++ b/src/com/android/settings/ButtonBarHandler.java
@@ -19,7 +19,7 @@ import android.widget.Button;
 
 /**
  * Interface letting {@link SettingsPreferenceFragment} access to bottom bar inside
- * {@link android.preference.PreferenceActivity}.
+ * {@link SettingsActivity}.
  */
 public interface ButtonBarHandler {
     public boolean hasNextButton();
diff --git a/src/com/android/settings/ChooseLockGeneric.java b/src/com/android/settings/ChooseLockGeneric.java
index 49de366..a92f514 100644
--- a/src/com/android/settings/ChooseLockGeneric.java
+++ b/src/com/android/settings/ChooseLockGeneric.java
@@ -17,7 +17,6 @@
 package com.android.settings;
 
 import android.app.Activity;
-import android.app.Fragment;
 import android.app.PendingIntent;
 import android.app.admin.DevicePolicyManager;
 import android.content.Context;
@@ -28,7 +27,6 @@ import android.os.Process;
 import android.os.UserHandle;
 import android.os.UserManager;
 import android.preference.Preference;
-import android.preference.PreferenceActivity;
 import android.preference.PreferenceScreen;
 import android.security.KeyStore;
 import android.util.EventLog;
@@ -38,13 +36,12 @@ import android.view.ViewGroup;
 import android.widget.ListView;
 
 import com.android.internal.widget.LockPatternUtils;
-import com.android.settings.ConfirmLockPattern.ConfirmLockPatternFragment;
 
 import java.util.List;
 
 import libcore.util.MutableBoolean;
 
-public class ChooseLockGeneric extends PreferenceActivity {
+public class ChooseLockGeneric extends SettingsActivity {
 
     @Override
     public Intent getIntent() {
diff --git a/src/com/android/settings/ChooseLockPassword.java b/src/com/android/settings/ChooseLockPassword.java
index f43738f..4d102a4 100644
--- a/src/com/android/settings/ChooseLockPassword.java
+++ b/src/com/android/settings/ChooseLockPassword.java
@@ -19,7 +19,6 @@ package com.android.settings;
 import com.android.internal.widget.LockPatternUtils;
 import com.android.internal.widget.PasswordEntryKeyboardHelper;
 import com.android.internal.widget.PasswordEntryKeyboardView;
-import com.android.settings.ChooseLockGeneric.ChooseLockGenericFragment;
 
 import android.app.Activity;
 import android.app.Fragment;
@@ -29,7 +28,6 @@ import android.inputmethodservice.KeyboardView;
 import android.os.Bundle;
 import android.os.Handler;
 import android.os.Message;
-import android.preference.PreferenceActivity;
 import android.text.Editable;
 import android.text.InputType;
 import android.text.Selection;
@@ -41,13 +39,12 @@ import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.view.View.OnClickListener;
-import android.view.accessibility.AccessibilityEvent;
 import android.view.inputmethod.EditorInfo;
 import android.widget.Button;
 import android.widget.TextView;
 import android.widget.TextView.OnEditorActionListener;
 
-public class ChooseLockPassword extends PreferenceActivity {
+public class ChooseLockPassword extends SettingsActivity {
     public static final String PASSWORD_MIN_KEY = "lockscreen.password_min";
     public static final String PASSWORD_MAX_KEY = "lockscreen.password_max";
     public static final String PASSWORD_MIN_LETTERS_KEY = "lockscreen.password_min_letters";
@@ -79,7 +76,7 @@ public class ChooseLockPassword extends PreferenceActivity {
                 //WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM);
         super.onCreate(savedInstanceState);
         CharSequence msg = getText(R.string.lockpassword_choose_your_password_header);
-        showBreadCrumbs(msg, msg);
+        setTitle(msg);
     }
 
     public static class ChooseLockPasswordFragment extends Fragment
@@ -137,9 +134,6 @@ public class ChooseLockPassword extends PreferenceActivity {
                     R.string.lockpassword_confirm_pins_dont_match,
                     R.string.lockpassword_continue_label);
 
-            /**
-             * @param headerMessage The message displayed at the top.
-             */
             Stage(int hintInAlpha, int hintInNumeric, int nextButtonText) {
                 this.alphaHint = hintInAlpha;
                 this.numericHint = hintInNumeric;
@@ -235,13 +229,12 @@ public class ChooseLockPassword extends PreferenceActivity {
                     updateStage(mUiStage);
                 }
             }
-            // Update the breadcrumb (title) if this is embedded in a PreferenceActivity
-            if (activity instanceof PreferenceActivity) {
-                final PreferenceActivity preferenceActivity = (PreferenceActivity) activity;
+            if (activity instanceof SettingsActivity) {
+                final SettingsActivity sa = (SettingsActivity) activity;
                 int id = mIsAlphaMode ? R.string.lockpassword_choose_your_password_header
                         : R.string.lockpassword_choose_your_pin_header;
                 CharSequence title = getText(id);
-                preferenceActivity.showBreadCrumbs(title, title);
+                sa.setTitle(title);
             }
 
             return view;
diff --git a/src/com/android/settings/ChooseLockPattern.java b/src/com/android/settings/ChooseLockPattern.java
index 328312c..5a939aa 100644
--- a/src/com/android/settings/ChooseLockPattern.java
+++ b/src/com/android/settings/ChooseLockPattern.java
@@ -22,7 +22,6 @@ import com.android.internal.widget.LinearLayoutWithDefaultTouchRecepient;
 import com.android.internal.widget.LockPatternUtils;
 import com.android.internal.widget.LockPatternView;
 import com.android.internal.widget.LockPatternView.Cell;
-import com.android.settings.ChooseLockGeneric.ChooseLockGenericFragment;
 
 import static com.android.internal.widget.LockPatternView.DisplayMode;
 
@@ -30,7 +29,6 @@ import android.app.Activity;
 import android.app.Fragment;
 import android.content.Intent;
 import android.os.Bundle;
-import android.preference.PreferenceActivity;
 import android.view.KeyEvent;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -49,7 +47,7 @@ import java.util.List;
  * - asks for confirmation / restart
  * - saves chosen password when confirmed
  */
-public class ChooseLockPattern extends PreferenceActivity {
+public class ChooseLockPattern extends SettingsActivity {
     /**
      * Used by the choose lock pattern wizard to indicate the wizard is
      * finished, and each activity in the wizard should finish.
@@ -80,7 +78,7 @@ public class ChooseLockPattern extends PreferenceActivity {
         // requestWindowFeature(Window.FEATURE_NO_TITLE);
         super.onCreate(savedInstanceState);
         CharSequence msg = getText(R.string.lockpassword_choose_your_pattern_header);
-        showBreadCrumbs(msg, msg);
+        setTitle(msg);
     }
 
     @Override
diff --git a/src/com/android/settings/ConfirmLockPassword.java b/src/com/android/settings/ConfirmLockPassword.java
index d7402da..72da156 100644
--- a/src/com/android/settings/ConfirmLockPassword.java
+++ b/src/com/android/settings/ConfirmLockPassword.java
@@ -19,7 +19,6 @@ package com.android.settings;
 import com.android.internal.widget.LockPatternUtils;
 import com.android.internal.widget.PasswordEntryKeyboardHelper;
 import com.android.internal.widget.PasswordEntryKeyboardView;
-import com.android.settings.ChooseLockGeneric.ChooseLockGenericFragment;
 
 import android.app.Activity;
 import android.app.Fragment;
@@ -27,7 +26,6 @@ import android.app.admin.DevicePolicyManager;
 import android.content.Intent;
 import android.os.Bundle;
 import android.os.Handler;
-import android.preference.PreferenceActivity;
 import android.text.Editable;
 import android.text.InputType;
 import android.text.TextWatcher;
@@ -36,13 +34,12 @@ import android.view.LayoutInflater;
 import android.view.View;
 import android.view.View.OnClickListener;
 import android.view.ViewGroup;
-import android.view.accessibility.AccessibilityEvent;
 import android.view.inputmethod.EditorInfo;
 import android.widget.Button;
 import android.widget.TextView;
 import android.widget.TextView.OnEditorActionListener;
 
-public class ConfirmLockPassword extends PreferenceActivity {
+public class ConfirmLockPassword extends SettingsActivity {
 
     @Override
     public Intent getIntent() {
@@ -65,7 +62,7 @@ public class ConfirmLockPassword extends PreferenceActivity {
                 //WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM);
         super.onCreate(savedInstanceState);
         CharSequence msg = getText(R.string.lockpassword_confirm_your_password_header);
-        showBreadCrumbs(msg, msg);
+        setTitle(msg);
     }
 
     public static class ConfirmLockPasswordFragment extends Fragment implements OnClickListener,
@@ -127,13 +124,12 @@ public class ConfirmLockPassword extends PreferenceActivity {
             mPasswordEntry.setInputType(isAlpha ? currentType
                     : (InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_VARIATION_PASSWORD));
 
-            // Update the breadcrumb (title) if this is embedded in a PreferenceActivity
-            if (activity instanceof PreferenceActivity) {
-                final PreferenceActivity preferenceActivity = (PreferenceActivity) activity;
+            if (activity instanceof SettingsActivity) {
+                final SettingsActivity sa = (SettingsActivity) activity;
                 int id = isAlpha ? R.string.lockpassword_confirm_your_password_header
                         : R.string.lockpassword_confirm_your_pin_header;
                 CharSequence title = getText(id);
-                preferenceActivity.showBreadCrumbs(title, title);
+                sa.setTitle(title);
             }
 
             return view;
diff --git a/src/com/android/settings/ConfirmLockPattern.java b/src/com/android/settings/ConfirmLockPattern.java
index 3a1f06c..81b325b 100644
--- a/src/com/android/settings/ConfirmLockPattern.java
+++ b/src/com/android/settings/ConfirmLockPattern.java
@@ -27,7 +27,6 @@ import android.content.Intent;
 import android.os.CountDownTimer;
 import android.os.SystemClock;
 import android.os.Bundle;
-import android.preference.PreferenceActivity;
 import android.widget.TextView;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -41,7 +40,7 @@ import java.util.List;
  * Sets an activity result of {@link Activity#RESULT_OK} when the user
  * successfully confirmed their pattern.
  */
-public class ConfirmLockPattern extends PreferenceActivity {
+public class ConfirmLockPattern extends SettingsActivity {
 
     /**
      * Names of {@link CharSequence} fields within the originating {@link Intent}
@@ -65,7 +64,7 @@ public class ConfirmLockPattern extends PreferenceActivity {
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         CharSequence msg = getText(R.string.lockpassword_confirm_your_pattern_header);
-        showBreadCrumbs(msg, msg);
+        setTitle(msg);
     }
 
     @Override
diff --git a/src/com/android/settings/CreateShortcut.java b/src/com/android/settings/CreateShortcut.java
index f71df1d..0bf265f 100644
--- a/src/com/android/settings/CreateShortcut.java
+++ b/src/com/android/settings/CreateShortcut.java
@@ -19,7 +19,6 @@ package com.android.settings;
 import android.app.LauncherActivity;
 import android.content.Intent;
 import android.content.pm.ResolveInfo;
-import android.os.Bundle;
 import android.view.View;
 import android.widget.ListView;
 
diff --git a/src/com/android/settings/CryptKeeperSettings.java b/src/com/android/settings/CryptKeeperSettings.java
index 58d97a8..cedf530 100644
--- a/src/com/android/settings/CryptKeeperSettings.java
+++ b/src/com/android/settings/CryptKeeperSettings.java
@@ -30,7 +30,6 @@ import android.content.res.Resources;
 import android.os.BatteryManager;
 import android.os.Bundle;
 import android.preference.Preference;
-import android.preference.PreferenceActivity;
 import android.text.TextUtils;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -201,6 +200,6 @@ public class CryptKeeperSettings extends Fragment {
         preference.setFragment(CryptKeeperConfirm.class.getName());
         preference.setTitle(R.string.crypt_keeper_confirm_title);
         preference.getExtras().putString("password", password);
-        ((PreferenceActivity) getActivity()).onPreferenceStartFragment(null, preference);
+        ((SettingsActivity) getActivity()).onPreferenceStartFragment(null, preference);
     }
 }
diff --git a/src/com/android/settings/DataUsageSummary.java b/src/com/android/settings/DataUsageSummary.java
index db1ae29..90443bd 100644
--- a/src/com/android/settings/DataUsageSummary.java
+++ b/src/com/android/settings/DataUsageSummary.java
@@ -87,8 +87,6 @@ import android.os.ServiceManager;
 import android.os.SystemProperties;
 import android.os.UserHandle;
 import android.preference.Preference;
-import android.preference.PreferenceActivity;
-import android.provider.Settings;
 import android.telephony.TelephonyManager;
 import android.text.TextUtils;
 import android.text.format.DateUtils;
@@ -548,8 +546,8 @@ public class DataUsageSummary extends Fragment {
                 return true;
             }
             case R.id.data_usage_menu_metered: {
-                final PreferenceActivity activity = (PreferenceActivity) getActivity();
-                activity.startPreferencePanel(DataUsageMeteredSettings.class.getCanonicalName(), null,
+                final SettingsActivity sa = (SettingsActivity) getActivity();
+                sa.startPreferencePanel(DataUsageMeteredSettings.class.getCanonicalName(), null,
                         R.string.data_usage_metered_title, null, this, 0);
                 return true;
             }
@@ -886,14 +884,16 @@ public class DataUsageSummary extends Fragment {
 
     private boolean getDataRoaming() {
         final ContentResolver resolver = getActivity().getContentResolver();
-        return Settings.Global.getInt(resolver, Settings.Global.DATA_ROAMING, 0) != 0;
+        return android.provider.Settings.Global.getInt(resolver,
+                android.provider.Settings.Global.DATA_ROAMING, 0) != 0;
     }
 
     private void setDataRoaming(boolean enabled) {
         // TODO: teach telephony DataConnectionTracker to watch and apply
         // updates when changed.
         final ContentResolver resolver = getActivity().getContentResolver();
-        Settings.Global.putInt(resolver, Settings.Global.DATA_ROAMING, enabled ? 1 : 0);
+        android.provider.Settings.Global.putInt(resolver,
+                android.provider.Settings.Global.DATA_ROAMING, enabled ? 1 : 0);
         mMenuDataRoaming.setChecked(enabled);
     }
 
diff --git a/src/com/android/settings/DreamSettings.java b/src/com/android/settings/DreamSettings.java
index cb91f39..f4e251e 100644
--- a/src/com/android/settings/DreamSettings.java
+++ b/src/com/android/settings/DreamSettings.java
@@ -26,7 +26,6 @@ import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.IntentFilter;
 import android.os.Bundle;
-import android.preference.PreferenceActivity;
 import android.util.Log;
 import android.view.Gravity;
 import android.view.LayoutInflater;
diff --git a/src/com/android/settings/HomeSettings.java b/src/com/android/settings/HomeSettings.java
index eb659e2..8697062 100644
--- a/src/com/android/settings/HomeSettings.java
+++ b/src/com/android/settings/HomeSettings.java
@@ -23,7 +23,6 @@ import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
-import android.content.SharedPreferences;
 import android.content.pm.ActivityInfo;
 import android.content.pm.ApplicationInfo;
 import android.content.pm.PackageInfo;
@@ -138,7 +137,7 @@ public class HomeSettings extends SettingsPreferenceFragment {
         if (mPrefs.size() < 2) {
             if (mShowNotice) {
                 mShowNotice = false;
-                Settings.requestHomeNotice();
+                SettingsActivity.requestHomeNotice();
             }
             finishFragment();
         }
diff --git a/src/com/android/settings/IccLockSettings.java b/src/com/android/settings/IccLockSettings.java
index b988572..cb39020 100644
--- a/src/com/android/settings/IccLockSettings.java
+++ b/src/com/android/settings/IccLockSettings.java
@@ -27,7 +27,6 @@ import android.os.Handler;
 import android.os.Message;
 import android.preference.CheckBoxPreference;
 import android.preference.Preference;
-import android.preference.PreferenceActivity;
 import android.preference.PreferenceScreen;
 import android.util.Log;
 import android.widget.Toast;
@@ -45,7 +44,7 @@ import com.android.internal.telephony.TelephonyIntents;
  * these operations.
  *
  */
-public class IccLockSettings extends PreferenceActivity
+public class IccLockSettings extends SettingsPreferenceFragment
         implements EditPinPreference.OnPinEnteredListener {
     private static final String TAG = "IccLockSettings";
     private static final boolean DBG = true;
@@ -141,7 +140,7 @@ public class IccLockSettings extends PreferenceActivity
     }
 
     @Override
-    protected void onCreate(Bundle savedInstanceState) {
+    public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
         if (Utils.isMonkeyRunning()) {
@@ -192,13 +191,13 @@ public class IccLockSettings extends PreferenceActivity
     }
 
     @Override
-    protected void onResume() {
+    public void onResume() {
         super.onResume();
 
         // ACTION_SIM_STATE_CHANGED is sticky, so we'll receive current state after this call,
         // which will call updatePreferences().
         final IntentFilter filter = new IntentFilter(TelephonyIntents.ACTION_SIM_STATE_CHANGED);
-        registerReceiver(mSimStateReceiver, filter);
+        getActivity().registerReceiver(mSimStateReceiver, filter);
 
         if (mDialogState != OFF_MODE) {
             showPinDialog();
@@ -209,13 +208,13 @@ public class IccLockSettings extends PreferenceActivity
     }
 
     @Override
-    protected void onPause() {
+    public void onPause() {
         super.onPause();
-        unregisterReceiver(mSimStateReceiver);
+        getActivity().unregisterReceiver(mSimStateReceiver);
     }
 
     @Override
-    protected void onSaveInstanceState(Bundle out) {
+    public void onSaveInstanceState(Bundle out) {
         // Need to store this state for slider open/close
         // There is one case where the dialog is popped up by the preference
         // framework. In that case, let the preference framework store the
@@ -359,8 +358,8 @@ public class IccLockSettings extends PreferenceActivity
         if (success) {
             mPinToggle.setChecked(mToState);
         } else {
-            Toast.makeText(this, getPinPasswordErrorMessage(attemptsRemaining), Toast.LENGTH_LONG)
-                    .show();
+            Toast.makeText(getActivity(),
+                    getPinPasswordErrorMessage(attemptsRemaining), Toast.LENGTH_LONG).show();
         }
         mPinToggle.setEnabled(true);
         resetDialogState();
@@ -368,11 +367,11 @@ public class IccLockSettings extends PreferenceActivity
 
     private void iccPinChanged(boolean success, int attemptsRemaining) {
         if (!success) {
-            Toast.makeText(this, getPinPasswordErrorMessage(attemptsRemaining),
+            Toast.makeText(getActivity(), getPinPasswordErrorMessage(attemptsRemaining),
                     Toast.LENGTH_LONG)
                     .show();
         } else {
-            Toast.makeText(this, mRes.getString(R.string.sim_change_succeeded),
+            Toast.makeText(getActivity(), mRes.getString(R.string.sim_change_succeeded),
                     Toast.LENGTH_SHORT)
                     .show();
 
diff --git a/src/com/android/settings/MasterClear.java b/src/com/android/settings/MasterClear.java
index 262aca3..eaf29c6 100644
--- a/src/com/android/settings/MasterClear.java
+++ b/src/com/android/settings/MasterClear.java
@@ -31,7 +31,6 @@ import android.os.Environment;
 import android.os.SystemProperties;
 import android.os.UserManager;
 import android.preference.Preference;
-import android.preference.PreferenceActivity;
 import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -115,7 +114,7 @@ public class MasterClear extends Fragment {
         preference.setFragment(MasterClearConfirm.class.getName());
         preference.setTitle(R.string.master_clear_confirm_title);
         preference.getExtras().putBoolean(ERASE_EXTERNAL_EXTRA, mExternalStorage.isChecked());
-        ((PreferenceActivity) getActivity()).onPreferenceStartFragment(null, preference);
+        ((SettingsActivity) getActivity()).onPreferenceStartFragment(null, preference);
     }
 
     /**
diff --git a/src/com/android/settings/Settings.java b/src/com/android/settings/Settings.java
index 91f7fbc..6bcfbee 100644
--- a/src/com/android/settings/Settings.java
+++ b/src/com/android/settings/Settings.java
@@ -16,1045 +16,77 @@
 
 package com.android.settings;
 
-import android.accounts.Account;
-import android.accounts.AccountManager;
-import android.accounts.OnAccountsUpdateListener;
-import android.app.Activity;
-import android.app.AlertDialog;
-import android.app.Dialog;
-import android.app.DialogFragment;
-import android.app.admin.DevicePolicyManager;
-import android.content.BroadcastReceiver;
-import android.content.Context;
-import android.content.Intent;
-import android.content.IntentFilter;
-import android.content.SharedPreferences;
-import android.content.pm.ActivityInfo;
-import android.content.pm.PackageManager;
-import android.content.pm.PackageManager.NameNotFoundException;
-import android.content.pm.ResolveInfo;
-import android.graphics.drawable.Drawable;
-import android.nfc.NfcAdapter;
-import android.os.Bundle;
-import android.os.INetworkManagementService;
-import android.os.RemoteException;
-import android.os.ServiceManager;
-import android.os.UserHandle;
-import android.os.UserManager;
-import android.preference.Preference;
-import android.preference.PreferenceActivity;
-import android.preference.PreferenceFragment;
-import android.text.TextUtils;
-import android.util.Log;
-import android.view.LayoutInflater;
-import android.view.View;
-import android.view.View.OnClickListener;
-import android.view.ViewGroup;
-import android.widget.ArrayAdapter;
-import android.widget.Button;
-import android.widget.ImageButton;
-import android.widget.ImageView;
-import android.widget.ListAdapter;
-import android.widget.Switch;
-import android.widget.TextView;
-
-import com.android.internal.util.ArrayUtils;
-import com.android.settings.accessibility.AccessibilitySettings;
-import com.android.settings.accessibility.CaptionPropertiesFragment;
-import com.android.settings.accessibility.ToggleAccessibilityServicePreferenceFragment;
-import com.android.settings.accounts.AccountSyncSettings;
-import com.android.settings.accounts.AuthenticatorHelper;
-import com.android.settings.accounts.ManageAccountsSettings;
 import com.android.settings.applications.AppOpsSummary;
-import com.android.settings.applications.ManageApplications;
-import com.android.settings.applications.ProcessStatsUi;
-import com.android.settings.bluetooth.BluetoothEnabler;
-import com.android.settings.bluetooth.BluetoothSettings;
-import com.android.settings.deviceinfo.Memory;
-import com.android.settings.deviceinfo.UsbSettings;
-import com.android.settings.fuelgauge.PowerUsageSummary;
-import com.android.settings.inputmethod.InputMethodAndLanguageSettings;
-import com.android.settings.inputmethod.KeyboardLayoutPickerFragment;
-import com.android.settings.inputmethod.SpellCheckersSettings;
-import com.android.settings.inputmethod.UserDictionaryList;
-import com.android.settings.location.LocationSettings;
-import com.android.settings.nfc.AndroidBeam;
-import com.android.settings.nfc.PaymentSettings;
-import com.android.settings.print.PrintJobSettingsFragment;
-import com.android.settings.print.PrintServiceSettingsFragment;
-import com.android.settings.print.PrintSettingsFragment;
-import com.android.settings.tts.TextToSpeechSettings;
-import com.android.settings.users.UserSettings;
-import com.android.settings.vpn2.VpnSettings;
-import com.android.settings.wfd.WifiDisplaySettings;
-import com.android.settings.wifi.AdvancedWifiSettings;
-import com.android.settings.wifi.WifiEnabler;
-import com.android.settings.wifi.WifiSettings;
-import com.android.settings.wifi.p2p.WifiP2pSettings;
-
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.Comparator;
-import java.util.HashMap;
-import java.util.List;
 
 /**
- * Top-level settings activity to handle single pane and double pane UI layout.
+ * Top-level Settings activity
  */
-public class Settings extends PreferenceActivity
-        implements ButtonBarHandler, OnAccountsUpdateListener {
-
-    private static final String LOG_TAG = "Settings";
-
-    private static final String META_DATA_KEY_HEADER_ID =
-        "com.android.settings.TOP_LEVEL_HEADER_ID";
-    private static final String META_DATA_KEY_FRAGMENT_CLASS =
-        "com.android.settings.FRAGMENT_CLASS";
-    private static final String EXTRA_UI_OPTIONS = "settings:ui_options";
-    private static final String SAVE_KEY_CURRENT_HEADER = "com.android.settings.CURRENT_HEADER";
-
-    private static boolean sShowNoHomeNotice = false;
-
-    private String mFragmentClass;
-    private int mTopLevelHeaderId;
-    private Header mFirstHeader;
-    private Header mCurrentHeader;
-    private boolean mInLocalHeaderSwitch;
-
-    // Show only these settings for restricted users
-    private int[] SETTINGS_FOR_RESTRICTED = {
-            R.id.wireless_section,
-            R.id.wifi_settings,
-            R.id.bluetooth_settings,
-            R.id.data_usage_settings,
-            R.id.wireless_settings,
-            R.id.device_section,
-            R.id.sound_settings,
-            R.id.display_settings,
-            R.id.storage_settings,
-            R.id.application_settings,
-            R.id.battery_settings,
-            R.id.personal_section,
-            R.id.location_settings,
-            R.id.security_settings,
-            R.id.language_settings,
-            R.id.user_settings,
-            R.id.account_settings,
-            R.id.account_add,
-            R.id.system_section,
-            R.id.date_time_settings,
-            R.id.about_settings,
-            R.id.accessibility_settings,
-            R.id.print_settings,
-            R.id.nfc_payment_settings,
-            R.id.home_settings
-    };
-
-    private SharedPreferences mDevelopmentPreferences;
-    private SharedPreferences.OnSharedPreferenceChangeListener mDevelopmentPreferencesListener;
-
-    // TODO: Update Call Settings based on airplane mode state.
-
-    protected HashMap<Integer, Integer> mHeaderIndexMap = new HashMap<Integer, Integer>();
-
-    private AuthenticatorHelper mAuthenticatorHelper;
-    private Header mLastHeader;
-    private boolean mListeningToAccountUpdates;
-
-    private boolean mBatteryPresent = true;
-    private BroadcastReceiver mBatteryInfoReceiver = new BroadcastReceiver() {
-
-        @Override
-        public void onReceive(Context context, Intent intent) {
-            String action = intent.getAction();
-            if (Intent.ACTION_BATTERY_CHANGED.equals(action)) {
-                boolean batteryPresent = Utils.isBatteryPresent(intent);
-
-                if (mBatteryPresent != batteryPresent) {
-                    mBatteryPresent = batteryPresent;
-                    invalidateHeaders();
-                }
-            }
-        }
-    };
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        if (getIntent().hasExtra(EXTRA_UI_OPTIONS)) {
-            getWindow().setUiOptions(getIntent().getIntExtra(EXTRA_UI_OPTIONS, 0));
-        }
-
-        mAuthenticatorHelper = new AuthenticatorHelper();
-        mAuthenticatorHelper.updateAuthDescriptions(this);
-        mAuthenticatorHelper.onAccountsUpdated(this, null);
-
-        mDevelopmentPreferences = getSharedPreferences(DevelopmentSettings.PREF_FILE,
-                Context.MODE_PRIVATE);
-
-        getMetaData();
-        mInLocalHeaderSwitch = true;
-        super.onCreate(savedInstanceState);
-        mInLocalHeaderSwitch = false;
-
-        if (!onIsHidingHeaders() && onIsMultiPane()) {
-            highlightHeader(mTopLevelHeaderId);
-            // Force the title so that it doesn't get overridden by a direct launch of
-            // a specific settings screen.
-            setTitle(R.string.settings_label);
-        }
-
-        // Retrieve any saved state
-        if (savedInstanceState != null) {
-            mCurrentHeader = savedInstanceState.getParcelable(SAVE_KEY_CURRENT_HEADER);
-        }
-
-        // If the current header was saved, switch to it
-        if (savedInstanceState != null && mCurrentHeader != null) {
-            //switchToHeaderLocal(mCurrentHeader);
-            showBreadCrumbs(mCurrentHeader.title, null);
-        }
-
-        // Override up navigation for multi-pane, since we handle it in the fragment breadcrumbs
-        if (onIsMultiPane()) {
-            getActionBar().setDisplayHomeAsUpEnabled(false);
-            getActionBar().setHomeButtonEnabled(false);
-        }
-    }
-
-    @Override
-    protected void onSaveInstanceState(Bundle outState) {
-        super.onSaveInstanceState(outState);
-
-        // Save the current fragment, if it is the same as originally launched
-        if (mCurrentHeader != null) {
-            outState.putParcelable(SAVE_KEY_CURRENT_HEADER, mCurrentHeader);
-        }
-    }
-
-    @Override
-    public void onResume() {
-        super.onResume();
-
-        mDevelopmentPreferencesListener = new SharedPreferences.OnSharedPreferenceChangeListener() {
-            @Override
-            public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
-                invalidateHeaders();
-            }
-        };
-        mDevelopmentPreferences.registerOnSharedPreferenceChangeListener(
-                mDevelopmentPreferencesListener);
-
-        ListAdapter listAdapter = getListAdapter();
-        if (listAdapter instanceof HeaderAdapter) {
-            ((HeaderAdapter) listAdapter).resume();
-        }
-        invalidateHeaders();
-
-        registerReceiver(mBatteryInfoReceiver, new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
-    }
-
-    @Override
-    public void onPause() {
-        super.onPause();
-
-        unregisterReceiver(mBatteryInfoReceiver);
-
-        ListAdapter listAdapter = getListAdapter();
-        if (listAdapter instanceof HeaderAdapter) {
-            ((HeaderAdapter) listAdapter).pause();
-        }
-
-        mDevelopmentPreferences.unregisterOnSharedPreferenceChangeListener(
-                mDevelopmentPreferencesListener);
-        mDevelopmentPreferencesListener = null;
-    }
-
-    @Override
-    public void onDestroy() {
-        super.onDestroy();
-        if (mListeningToAccountUpdates) {
-            AccountManager.get(this).removeOnAccountsUpdatedListener(this);
-        }
-    }
-
-    @Override
-    public boolean onIsMultiPane() {
-        return false;
-    }
-
-    private static final String[] ENTRY_FRAGMENTS = {
-        WirelessSettings.class.getName(),
-        WifiSettings.class.getName(),
-        AdvancedWifiSettings.class.getName(),
-        BluetoothSettings.class.getName(),
-        TetherSettings.class.getName(),
-        WifiP2pSettings.class.getName(),
-        VpnSettings.class.getName(),
-        DateTimeSettings.class.getName(),
-        LocalePicker.class.getName(),
-        InputMethodAndLanguageSettings.class.getName(),
-        SpellCheckersSettings.class.getName(),
-        UserDictionaryList.class.getName(),
-        UserDictionarySettings.class.getName(),
-        SoundSettings.class.getName(),
-        DisplaySettings.class.getName(),
-        DeviceInfoSettings.class.getName(),
-        ManageApplications.class.getName(),
-        ProcessStatsUi.class.getName(),
-        NotificationStation.class.getName(),
-        LocationSettings.class.getName(),
-        SecuritySettings.class.getName(),
-        PrivacySettings.class.getName(),
-        DeviceAdminSettings.class.getName(),
-        AccessibilitySettings.class.getName(),
-        CaptionPropertiesFragment.class.getName(),
-        com.android.settings.accessibility.ToggleInversionPreferenceFragment.class.getName(),
-        com.android.settings.accessibility.ToggleContrastPreferenceFragment.class.getName(),
-        com.android.settings.accessibility.ToggleDaltonizerPreferenceFragment.class.getName(),
-        TextToSpeechSettings.class.getName(),
-        Memory.class.getName(),
-        DevelopmentSettings.class.getName(),
-        UsbSettings.class.getName(),
-        AndroidBeam.class.getName(),
-        WifiDisplaySettings.class.getName(),
-        PowerUsageSummary.class.getName(),
-        AccountSyncSettings.class.getName(),
-        CryptKeeperSettings.class.getName(),
-        DataUsageSummary.class.getName(),
-        DreamSettings.class.getName(),
-        UserSettings.class.getName(),
-        NotificationAccessSettings.class.getName(),
-        ManageAccountsSettings.class.getName(),
-        PrintSettingsFragment.class.getName(),
-        PrintJobSettingsFragment.class.getName(),
-        TrustedCredentialsSettings.class.getName(),
-        PaymentSettings.class.getName(),
-        KeyboardLayoutPickerFragment.class.getName()
-    };
-
-    @Override
-    protected boolean isValidFragment(String fragmentName) {
-        // Almost all fragments are wrapped in this,
-        // except for a few that have their own activities.
-        for (int i = 0; i < ENTRY_FRAGMENTS.length; i++) {
-            if (ENTRY_FRAGMENTS[i].equals(fragmentName)) return true;
-        }
-        return false;
-    }
-
-    private void switchToHeaderLocal(Header header) {
-        mInLocalHeaderSwitch = true;
-        switchToHeader(header);
-        mInLocalHeaderSwitch = false;
-    }
-
-    @Override
-    public void switchToHeader(Header header) {
-        if (!mInLocalHeaderSwitch) {
-            mCurrentHeader = null;
-        }
-        super.switchToHeader(header);
-    }
-
-    @Override
-    public void onNewIntent(Intent intent) {
-        super.onNewIntent(intent);
-
-        // If it is not launched from history, then reset to top-level
-        if ((intent.getFlags() & Intent.FLAG_ACTIVITY_LAUNCHED_FROM_HISTORY) == 0) {
-            if (mFirstHeader != null && !onIsHidingHeaders() && onIsMultiPane()) {
-                switchToHeaderLocal(mFirstHeader);
-            }
-            getListView().setSelectionFromTop(0, 0);
-        }
-    }
-
-    private void highlightHeader(int id) {
-        if (id != 0) {
-            Integer index = mHeaderIndexMap.get(id);
-            if (index != null) {
-                getListView().setItemChecked(index, true);
-                if (isMultiPane()) {
-                    getListView().smoothScrollToPosition(index);
-                }
-            }
-        }
-    }
-
-    @Override
-    public Intent getIntent() {
-        Intent superIntent = super.getIntent();
-        String startingFragment = getStartingFragmentClass(superIntent);
-        // This is called from super.onCreate, isMultiPane() is not yet reliable
-        // Do not use onIsHidingHeaders either, which relies itself on this method
-        if (startingFragment != null && !onIsMultiPane()) {
-            Intent modIntent = new Intent(superIntent);
-            modIntent.putExtra(EXTRA_SHOW_FRAGMENT, startingFragment);
-            Bundle args = superIntent.getExtras();
-            if (args != null) {
-                args = new Bundle(args);
-            } else {
-                args = new Bundle();
-            }
-            args.putParcelable("intent", superIntent);
-            modIntent.putExtra(EXTRA_SHOW_FRAGMENT_ARGUMENTS, superIntent.getExtras());
-            return modIntent;
-        }
-        return superIntent;
-    }
-
-    /**
-     * Checks if the component name in the intent is different from the Settings class and
-     * returns the class name to load as a fragment.
-     */
-    protected String getStartingFragmentClass(Intent intent) {
-        if (mFragmentClass != null) return mFragmentClass;
-
-        String intentClass = intent.getComponent().getClassName();
-        if (intentClass.equals(getClass().getName())) return null;
-
-        if ("com.android.settings.ManageApplications".equals(intentClass)
-                || "com.android.settings.RunningServices".equals(intentClass)
-                || "com.android.settings.applications.StorageUse".equals(intentClass)) {
-            // Old names of manage apps.
-            intentClass = com.android.settings.applications.ManageApplications.class.getName();
-        }
-
-        return intentClass;
-    }
-
-    /**
-     * Override initial header when an activity-alias is causing Settings to be launched
-     * for a specific fragment encoded in the android:name parameter.
-     */
-    @Override
-    public Header onGetInitialHeader() {
-        String fragmentClass = getStartingFragmentClass(super.getIntent());
-        if (fragmentClass != null) {
-            Header header = new Header();
-            header.fragment = fragmentClass;
-            header.title = getTitle();
-            header.fragmentArguments = getIntent().getExtras();
-            mCurrentHeader = header;
-            return header;
-        }
-
-        return mFirstHeader;
-    }
-
-    @Override
-    public Intent onBuildStartFragmentIntent(String fragmentName, Bundle args,
-            int titleRes, int shortTitleRes) {
-        Intent intent = super.onBuildStartFragmentIntent(fragmentName, args,
-                titleRes, shortTitleRes);
-
-        // Some fragments want split ActionBar; these should stay in sync with
-        // uiOptions for fragments also defined as activities in manifest.
-        if (WifiSettings.class.getName().equals(fragmentName) ||
-                WifiP2pSettings.class.getName().equals(fragmentName) ||
-                BluetoothSettings.class.getName().equals(fragmentName) ||
-                DreamSettings.class.getName().equals(fragmentName) ||
-                LocationSettings.class.getName().equals(fragmentName) ||
-                ToggleAccessibilityServicePreferenceFragment.class.getName().equals(fragmentName) ||
-                PrintSettingsFragment.class.getName().equals(fragmentName) ||
-                PrintServiceSettingsFragment.class.getName().equals(fragmentName)) {
-            intent.putExtra(EXTRA_UI_OPTIONS, ActivityInfo.UIOPTION_SPLIT_ACTION_BAR_WHEN_NARROW);
-        }
-
-        intent.setClass(this, SubSettings.class);
-        return intent;
-    }
-
-    /**
-     * Populate the activity with the top-level headers.
-     */
-    @Override
-    public void onBuildHeaders(List<Header> headers) {
-        if (!onIsHidingHeaders()) {
-            loadHeadersFromResource(R.xml.settings_headers, headers);
-            updateHeaderList(headers);
-        }
-    }
-
-    private void updateHeaderList(List<Header> target) {
-        final boolean showDev = mDevelopmentPreferences.getBoolean(
-                DevelopmentSettings.PREF_SHOW,
-                android.os.Build.TYPE.equals("eng"));
-        int i = 0;
-
-        final UserManager um = (UserManager) getSystemService(Context.USER_SERVICE);
-        mHeaderIndexMap.clear();
-        while (i < target.size()) {
-            Header header = target.get(i);
-            // Ids are integers, so downcasting
-            int id = (int) header.id;
-            if (id == R.id.operator_settings || id == R.id.manufacturer_settings) {
-                Utils.updateHeaderToSpecificActivityFromMetaDataOrRemove(this, target, header);
-            } else if (id == R.id.wifi_settings) {
-                // Remove WiFi Settings if WiFi service is not available.
-                if (!getPackageManager().hasSystemFeature(PackageManager.FEATURE_WIFI)) {
-                    target.remove(i);
-                }
-            } else if (id == R.id.bluetooth_settings) {
-                // Remove Bluetooth Settings if Bluetooth service is not available.
-                if (!getPackageManager().hasSystemFeature(PackageManager.FEATURE_BLUETOOTH)) {
-                    target.remove(i);
-                }
-            } else if (id == R.id.data_usage_settings) {
-                // Remove data usage when kernel module not enabled
-                final INetworkManagementService netManager = INetworkManagementService.Stub
-                        .asInterface(ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE));
-                try {
-                    if (!netManager.isBandwidthControlEnabled()) {
-                        target.remove(i);
-                    }
-                } catch (RemoteException e) {
-                    // ignored
-                }
-            } else if (id == R.id.battery_settings) {
-                // Remove battery settings when battery is not available. (e.g. TV)
-
-                if (!mBatteryPresent) {
-                    target.remove(i);
-                }
-            } else if (id == R.id.account_settings) {
-                int headerIndex = i + 1;
-                i = insertAccountsHeaders(target, headerIndex);
-            } else if (id == R.id.home_settings) {
-                if (!updateHomeSettingHeaders(header)) {
-                    target.remove(i);
-                }
-            } else if (id == R.id.user_settings) {
-                if (!UserHandle.MU_ENABLED
-                        || !UserManager.supportsMultipleUsers()
-                        || Utils.isMonkeyRunning()) {
-                    target.remove(i);
-                }
-            } else if (id == R.id.nfc_payment_settings) {
-                if (!getPackageManager().hasSystemFeature(PackageManager.FEATURE_NFC)) {
-                    target.remove(i);
-                } else {
-                    // Only show if NFC is on and we have the HCE feature
-                    NfcAdapter adapter = NfcAdapter.getDefaultAdapter(this);
-                    if (!adapter.isEnabled() || !getPackageManager().hasSystemFeature(
-                            PackageManager.FEATURE_NFC_HOST_CARD_EMULATION)) {
-                        target.remove(i);
-                    }
-                }
-            } else if (id == R.id.development_settings) {
-                if (!showDev) {
-                    target.remove(i);
-                }
-            } else if (id == R.id.account_add) {
-                if (um.hasUserRestriction(UserManager.DISALLOW_MODIFY_ACCOUNTS)) {
-                    target.remove(i);
-                }
-            }
-
-            if (i < target.size() && target.get(i) == header
-                    && UserHandle.MU_ENABLED && UserHandle.myUserId() != 0
-                    && !ArrayUtils.contains(SETTINGS_FOR_RESTRICTED, id)) {
-                target.remove(i);
-            }
-
-            // Increment if the current one wasn't removed by the Utils code.
-            if (i < target.size() && target.get(i) == header) {
-                // Hold on to the first header, when we need to reset to the top-level
-                if (mFirstHeader == null &&
-                        HeaderAdapter.getHeaderType(header) != HeaderAdapter.HEADER_TYPE_CATEGORY) {
-                    mFirstHeader = header;
-                }
-                mHeaderIndexMap.put(id, i);
-                i++;
-            }
-        }
-    }
-
-    private int insertAccountsHeaders(List<Header> target, int headerIndex) {
-        String[] accountTypes = mAuthenticatorHelper.getEnabledAccountTypes();
-        List<Header> accountHeaders = new ArrayList<Header>(accountTypes.length);
-        for (String accountType : accountTypes) {
-            CharSequence label = mAuthenticatorHelper.getLabelForType(this, accountType);
-            if (label == null) {
-                continue;
-            }
-
-            Account[] accounts = AccountManager.get(this).getAccountsByType(accountType);
-            boolean skipToAccount = accounts.length == 1
-                    && !mAuthenticatorHelper.hasAccountPreferences(accountType);
-            Header accHeader = new Header();
-            accHeader.title = label;
-            if (accHeader.extras == null) {
-                accHeader.extras = new Bundle();
-            }
-            if (skipToAccount) {
-                accHeader.breadCrumbTitleRes = R.string.account_sync_settings_title;
-                accHeader.breadCrumbShortTitleRes = R.string.account_sync_settings_title;
-                accHeader.fragment = AccountSyncSettings.class.getName();
-                accHeader.fragmentArguments = new Bundle();
-                // Need this for the icon
-                accHeader.extras.putString(ManageAccountsSettings.KEY_ACCOUNT_TYPE, accountType);
-                accHeader.extras.putParcelable(AccountSyncSettings.ACCOUNT_KEY, accounts[0]);
-                accHeader.fragmentArguments.putParcelable(AccountSyncSettings.ACCOUNT_KEY,
-                        accounts[0]);
-            } else {
-                accHeader.breadCrumbTitle = label;
-                accHeader.breadCrumbShortTitle = label;
-                accHeader.fragment = ManageAccountsSettings.class.getName();
-                accHeader.fragmentArguments = new Bundle();
-                accHeader.extras.putString(ManageAccountsSettings.KEY_ACCOUNT_TYPE, accountType);
-                accHeader.fragmentArguments.putString(ManageAccountsSettings.KEY_ACCOUNT_TYPE,
-                        accountType);
-                if (!isMultiPane()) {
-                    accHeader.fragmentArguments.putString(ManageAccountsSettings.KEY_ACCOUNT_LABEL,
-                            label.toString());
-                }
-            }
-            accountHeaders.add(accHeader);
-            mAuthenticatorHelper.preloadDrawableForType(this, accountType);
-        }
-
-        // Sort by label
-        Collections.sort(accountHeaders, new Comparator<Header>() {
-            @Override
-            public int compare(Header h1, Header h2) {
-                return h1.title.toString().compareTo(h2.title.toString());
-            }
-        });
-
-        for (Header header : accountHeaders) {
-            target.add(headerIndex++, header);
-        }
-        if (!mListeningToAccountUpdates) {
-            AccountManager.get(this).addOnAccountsUpdatedListener(this, null, true);
-            mListeningToAccountUpdates = true;
-        }
-        return headerIndex;
-    }
-
-    private boolean updateHomeSettingHeaders(Header header) {
-        // Once we decide to show Home settings, keep showing it forever
-        SharedPreferences sp = getSharedPreferences(HomeSettings.HOME_PREFS, Context.MODE_PRIVATE);
-        if (sp.getBoolean(HomeSettings.HOME_PREFS_DO_SHOW, false)) {
-            return true;
-        }
-
-        try {
-            final ArrayList<ResolveInfo> homeApps = new ArrayList<ResolveInfo>();
-            getPackageManager().getHomeActivities(homeApps);
-            if (homeApps.size() < 2) {
-                // When there's only one available home app, omit this settings
-                // category entirely at the top level UI.  If the user just
-                // uninstalled the penultimate home app candidiate, we also
-                // now tell them about why they aren't seeing 'Home' in the list.
-                if (sShowNoHomeNotice) {
-                    sShowNoHomeNotice = false;
-                    NoHomeDialogFragment.show(this);
-                }
-                return false;
-            } else {
-                // Okay, we're allowing the Home settings category.  Tell it, when
-                // invoked via this front door, that we'll need to be told about the
-                // case when the user uninstalls all but one home app.
-                if (header.fragmentArguments == null) {
-                    header.fragmentArguments = new Bundle();
-                }
-                header.fragmentArguments.putBoolean(HomeSettings.HOME_SHOW_NOTICE, true);
-            }
-        } catch (Exception e) {
-            // Can't look up the home activity; bail on configuring the icon
-            Log.w(LOG_TAG, "Problem looking up home activity!", e);
-        }
-
-        sp.edit().putBoolean(HomeSettings.HOME_PREFS_DO_SHOW, true).apply();
-        return true;
-    }
-
-    private void getMetaData() {
-        try {
-            ActivityInfo ai = getPackageManager().getActivityInfo(getComponentName(),
-                    PackageManager.GET_META_DATA);
-            if (ai == null || ai.metaData == null) return;
-            mTopLevelHeaderId = ai.metaData.getInt(META_DATA_KEY_HEADER_ID);
-            mFragmentClass = ai.metaData.getString(META_DATA_KEY_FRAGMENT_CLASS);
-        } catch (NameNotFoundException nnfe) {
-            // No recovery
-            Log.d(LOG_TAG, "Cannot get Metadata for: " + getComponentName().toString());
-        }
-    }
-
-    @Override
-    public boolean hasNextButton() {
-        return super.hasNextButton();
-    }
-
-    @Override
-    public Button getNextButton() {
-        return super.getNextButton();
-    }
-
-    public static class NoHomeDialogFragment extends DialogFragment {
-        public static void show(Activity parent) {
-            final NoHomeDialogFragment dialog = new NoHomeDialogFragment();
-            dialog.show(parent.getFragmentManager(), null);
-        }
-
-        @Override
-        public Dialog onCreateDialog(Bundle savedInstanceState) {
-            return new AlertDialog.Builder(getActivity())
-                    .setMessage(R.string.only_one_home_message)
-                    .setPositiveButton(android.R.string.ok, null)
-                    .create();
-        }
-    }
-
-    private static class HeaderAdapter extends ArrayAdapter<Header> {
-        static final int HEADER_TYPE_CATEGORY = 0;
-        static final int HEADER_TYPE_NORMAL = 1;
-        static final int HEADER_TYPE_SWITCH = 2;
-        static final int HEADER_TYPE_BUTTON = 3;
-        private static final int HEADER_TYPE_COUNT = HEADER_TYPE_BUTTON + 1;
-
-        private final WifiEnabler mWifiEnabler;
-        private final BluetoothEnabler mBluetoothEnabler;
-        private AuthenticatorHelper mAuthHelper;
-        private DevicePolicyManager mDevicePolicyManager;
-
-        private static class HeaderViewHolder {
-            ImageView mIcon;
-            TextView mTitle;
-            TextView mSummary;
-            Switch mSwitch;
-            ImageButton mButton;
-            View mDivider;
-        }
-
-        private LayoutInflater mInflater;
-
-        static int getHeaderType(Header header) {
-            if (header.fragment == null && header.intent == null) {
-                return HEADER_TYPE_CATEGORY;
-            } else if (header.id == R.id.wifi_settings || header.id == R.id.bluetooth_settings) {
-                return HEADER_TYPE_SWITCH;
-            } else if (header.id == R.id.security_settings) {
-                return HEADER_TYPE_BUTTON;
-            } else {
-                return HEADER_TYPE_NORMAL;
-            }
-        }
-
-        @Override
-        public int getItemViewType(int position) {
-            Header header = getItem(position);
-            return getHeaderType(header);
-        }
-
-        @Override
-        public boolean areAllItemsEnabled() {
-            return false; // because of categories
-        }
-
-        @Override
-        public boolean isEnabled(int position) {
-            return getItemViewType(position) != HEADER_TYPE_CATEGORY;
-        }
-
-        @Override
-        public int getViewTypeCount() {
-            return HEADER_TYPE_COUNT;
-        }
-
-        @Override
-        public boolean hasStableIds() {
-            return true;
-        }
-
-        public HeaderAdapter(Context context, List<Header> objects,
-                AuthenticatorHelper authenticatorHelper, DevicePolicyManager dpm) {
-            super(context, 0, objects);
-
-            mAuthHelper = authenticatorHelper;
-            mInflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
-
-            // Temp Switches provided as placeholder until the adapter replaces these with actual
-            // Switches inflated from their layouts. Must be done before adapter is set in super
-            mWifiEnabler = new WifiEnabler(context, new Switch(context));
-            mBluetoothEnabler = new BluetoothEnabler(context, new Switch(context));
-            mDevicePolicyManager = dpm;
-        }
-
-        @Override
-        public View getView(int position, View convertView, ViewGroup parent) {
-            HeaderViewHolder holder;
-            Header header = getItem(position);
-            int headerType = getHeaderType(header);
-            View view = null;
-
-            if (convertView == null) {
-                holder = new HeaderViewHolder();
-                switch (headerType) {
-                    case HEADER_TYPE_CATEGORY:
-                        view = new TextView(getContext(), null,
-                                android.R.attr.listSeparatorTextViewStyle);
-                        holder.mTitle = (TextView) view;
-                        break;
-
-                    case HEADER_TYPE_SWITCH:
-                        view = mInflater.inflate(R.layout.preference_header_switch_item, parent,
-                                false);
-                        holder.mIcon = (ImageView) view.findViewById(R.id.icon);
-                        holder.mTitle = (TextView)
-                                view.findViewById(com.android.internal.R.id.title);
-                        holder.mSummary = (TextView)
-                                view.findViewById(com.android.internal.R.id.summary);
-                        holder.mSwitch = (Switch) view.findViewById(R.id.switchWidget);
-                        break;
-
-                    case HEADER_TYPE_BUTTON:
-                        view = mInflater.inflate(R.layout.preference_header_button_item, parent,
-                                false);
-                        holder.mIcon = (ImageView) view.findViewById(R.id.icon);
-                        holder.mTitle = (TextView)
-                                view.findViewById(com.android.internal.R.id.title);
-                        holder.mSummary = (TextView)
-                                view.findViewById(com.android.internal.R.id.summary);
-                        holder.mButton = (ImageButton) view.findViewById(R.id.buttonWidget);
-                        holder.mDivider = view.findViewById(R.id.divider);
-                        break;
-
-                    case HEADER_TYPE_NORMAL:
-                        view = mInflater.inflate(
-                                R.layout.preference_header_item, parent,
-                                false);
-                        holder.mIcon = (ImageView) view.findViewById(R.id.icon);
-                        holder.mTitle = (TextView)
-                                view.findViewById(com.android.internal.R.id.title);
-                        holder.mSummary = (TextView)
-                                view.findViewById(com.android.internal.R.id.summary);
-                        break;
-                }
-                view.setTag(holder);
-            } else {
-                view = convertView;
-                holder = (HeaderViewHolder) view.getTag();
-            }
-
-            // All view fields must be updated every time, because the view may be recycled
-            switch (headerType) {
-                case HEADER_TYPE_CATEGORY:
-                    holder.mTitle.setText(header.getTitle(getContext().getResources()));
-                    break;
-
-                case HEADER_TYPE_SWITCH:
-                    // Would need a different treatment if the main menu had more switches
-                    if (header.id == R.id.wifi_settings) {
-                        mWifiEnabler.setSwitch(holder.mSwitch);
-                    } else {
-                        mBluetoothEnabler.setSwitch(holder.mSwitch);
-                    }
-                    updateCommonHeaderView(header, holder);
-                    break;
-
-                case HEADER_TYPE_BUTTON:
-                    if (header.id == R.id.security_settings) {
-                        boolean hasCert = DevicePolicyManager.hasAnyCaCertsInstalled();
-                        if (hasCert) {
-                            holder.mButton.setVisibility(View.VISIBLE);
-                            holder.mDivider.setVisibility(View.VISIBLE);
-                            boolean isManaged = mDevicePolicyManager.getDeviceOwner() != null;
-                            if (isManaged) {
-                                holder.mButton.setImageResource(R.drawable.ic_settings_about);
-                            } else {
-                                holder.mButton.setImageResource(
-                                        android.R.drawable.stat_notify_error);
-                            }
-                            holder.mButton.setOnClickListener(new OnClickListener() {
-                                @Override
-                                public void onClick(View v) {
-                                    Intent intent = new Intent(
-                                            android.provider.Settings.ACTION_MONITORING_CERT_INFO);
-                                    getContext().startActivity(intent);
-                                }
-                            });
-                        } else {
-                            holder.mButton.setVisibility(View.GONE);
-                            holder.mDivider.setVisibility(View.GONE);
-                        }
-                    }
-                    updateCommonHeaderView(header, holder);
-                    break;
-
-                case HEADER_TYPE_NORMAL:
-                    updateCommonHeaderView(header, holder);
-                    break;
-            }
-
-            return view;
-        }
-
-        private void updateCommonHeaderView(Header header, HeaderViewHolder holder) {
-                if (header.extras != null
-                        && header.extras.containsKey(ManageAccountsSettings.KEY_ACCOUNT_TYPE)) {
-                    String accType = header.extras.getString(
-                            ManageAccountsSettings.KEY_ACCOUNT_TYPE);
-                    Drawable icon = mAuthHelper.getDrawableForType(getContext(), accType);
-                    setHeaderIcon(holder, icon);
-                } else {
-                    holder.mIcon.setImageResource(header.iconRes);
-                }
-                holder.mTitle.setText(header.getTitle(getContext().getResources()));
-                CharSequence summary = header.getSummary(getContext().getResources());
-                if (!TextUtils.isEmpty(summary)) {
-                    holder.mSummary.setVisibility(View.VISIBLE);
-                    holder.mSummary.setText(summary);
-                } else {
-                    holder.mSummary.setVisibility(View.GONE);
-                }
-            }
-
-        private void setHeaderIcon(HeaderViewHolder holder, Drawable icon) {
-            ViewGroup.LayoutParams lp = holder.mIcon.getLayoutParams();
-            lp.width = getContext().getResources().getDimensionPixelSize(
-                    R.dimen.header_icon_width);
-            lp.height = lp.width;
-            holder.mIcon.setLayoutParams(lp);
-            holder.mIcon.setImageDrawable(icon);
-        }
-
-        public void resume() {
-            mWifiEnabler.resume();
-            mBluetoothEnabler.resume();
-        }
-
-        public void pause() {
-            mWifiEnabler.pause();
-            mBluetoothEnabler.pause();
-        }
-    }
-
-    @Override
-    public void onHeaderClick(Header header, int position) {
-        boolean revert = false;
-        if (header.id == R.id.account_add) {
-            revert = true;
-        }
-
-        super.onHeaderClick(header, position);
-
-        if (revert && mLastHeader != null) {
-            highlightHeader((int) mLastHeader.id);
-        } else {
-            mLastHeader = header;
-        }
-    }
-
-    @Override
-    public boolean onPreferenceStartFragment(PreferenceFragment caller, Preference pref) {
-        // Override the fragment title for Wallpaper settings
-        int titleRes = pref.getTitleRes();
-        if (pref.getFragment().equals(WallpaperTypeSettings.class.getName())) {
-            titleRes = R.string.wallpaper_settings_fragment_title;
-        } else if (pref.getFragment().equals(OwnerInfoSettings.class.getName())
-                && UserHandle.myUserId() != UserHandle.USER_OWNER) {
-            if (UserManager.get(this).isLinkedUser()) {
-                titleRes = R.string.profile_info_settings_title;
-            } else {
-                titleRes = R.string.user_info_settings_title;
-            }
-        }
-        startPreferencePanel(pref.getFragment(), pref.getExtras(), titleRes, pref.getTitle(),
-                null, 0);
-        return true;
-    }
-
-    @Override
-    public boolean shouldUpRecreateTask(Intent targetIntent) {
-        return super.shouldUpRecreateTask(new Intent(this, Settings.class));
-    }
-
-    @Override
-    public void setListAdapter(ListAdapter adapter) {
-        if (adapter == null) {
-            super.setListAdapter(null);
-        } else {
-            DevicePolicyManager dpm =
-                    (DevicePolicyManager) getSystemService(Context.DEVICE_POLICY_SERVICE);
-            super.setListAdapter(new HeaderAdapter(this, getHeaders(), mAuthenticatorHelper, dpm));
-        }
-    }
-
-    @Override
-    public void onAccountsUpdated(Account[] accounts) {
-        // TODO: watch for package upgrades to invalidate cache; see 7206643
-        mAuthenticatorHelper.updateAuthDescriptions(this);
-        mAuthenticatorHelper.onAccountsUpdated(this, accounts);
-        invalidateHeaders();
-    }
-
-    public static void requestHomeNotice() {
-        sShowNoHomeNotice = true;
-    }
+public class Settings extends SettingsActivity {
 
     /*
-     * Settings subclasses for launching independently.
-     */
-    public static class BluetoothSettingsActivity extends Settings { /* empty */ }
-    public static class WirelessSettingsActivity extends Settings { /* empty */ }
-    public static class TetherSettingsActivity extends Settings { /* empty */ }
-    public static class VpnSettingsActivity extends Settings { /* empty */ }
-    public static class DateTimeSettingsActivity extends Settings { /* empty */ }
-    public static class StorageSettingsActivity extends Settings { /* empty */ }
-    public static class WifiSettingsActivity extends Settings { /* empty */ }
-    public static class WifiP2pSettingsActivity extends Settings { /* empty */ }
-    public static class InputMethodAndLanguageSettingsActivity extends Settings { /* empty */ }
-    public static class KeyboardLayoutPickerActivity extends Settings { /* empty */ }
-    public static class InputMethodAndSubtypeEnablerActivity extends Settings { /* empty */ }
-    public static class SpellCheckersSettingsActivity extends Settings { /* empty */ }
-    public static class LocalePickerActivity extends Settings { /* empty */ }
-    public static class UserDictionarySettingsActivity extends Settings { /* empty */ }
-    public static class SoundSettingsActivity extends Settings { /* empty */ }
-    public static class DisplaySettingsActivity extends Settings { /* empty */ }
-    public static class DeviceInfoSettingsActivity extends Settings { /* empty */ }
-    public static class ApplicationSettingsActivity extends Settings { /* empty */ }
-    public static class ManageApplicationsActivity extends Settings { /* empty */ }
-    public static class AppOpsSummaryActivity extends Settings {
+    * Settings subclasses for launching independently.
+    */
+    public static class BluetoothSettingsActivity extends SettingsActivity { /* empty */ }
+    public static class WirelessSettingsActivity extends SettingsActivity { /* empty */ }
+    public static class TetherSettingsActivity extends SettingsActivity { /* empty */ }
+    public static class VpnSettingsActivity extends SettingsActivity { /* empty */ }
+    public static class DateTimeSettingsActivity extends SettingsActivity { /* empty */ }
+    public static class StorageSettingsActivity extends SettingsActivity { /* empty */ }
+    public static class WifiSettingsActivity extends SettingsActivity { /* empty */ }
+    public static class WifiP2pSettingsActivity extends SettingsActivity { /* empty */ }
+    public static class InputMethodAndLanguageSettingsActivity extends SettingsActivity { /* empty */ }
+    public static class KeyboardLayoutPickerActivity extends SettingsActivity { /* empty */ }
+    public static class InputMethodAndSubtypeEnablerActivity extends SettingsActivity { /* empty */ }
+    public static class SpellCheckersSettingsActivity extends SettingsActivity { /* empty */ }
+    public static class LocalePickerActivity extends SettingsActivity { /* empty */ }
+    public static class UserDictionarySettingsActivity extends SettingsActivity { /* empty */ }
+    public static class SoundSettingsActivity extends SettingsActivity { /* empty */ }
+    public static class DisplaySettingsActivity extends SettingsActivity { /* empty */ }
+    public static class DeviceInfoSettingsActivity extends SettingsActivity { /* empty */ }
+    public static class ApplicationSettingsActivity extends SettingsActivity { /* empty */ }
+    public static class ManageApplicationsActivity extends SettingsActivity { /* empty */ }
+    public static class AppOpsSummaryActivity extends SettingsActivity {
         @Override
         public boolean isValidFragment(String className) {
             if (AppOpsSummary.class.getName().equals(className)) {
                 return true;
             }
             return super.isValidFragment(className);
-        }
+            }
     }
-    public static class StorageUseActivity extends Settings { /* empty */ }
-    public static class DevelopmentSettingsActivity extends Settings { /* empty */ }
-    public static class AccessibilitySettingsActivity extends Settings { /* empty */ }
-    public static class CaptioningSettingsActivity extends Settings { /* empty */ }
-    public static class AccessibilityInversionSettingsActivity extends Settings { /* empty */ }
-    public static class AccessibilityContrastSettingsActivity extends Settings { /* empty */ }
-    public static class AccessibilityDaltonizerSettingsActivity extends Settings { /* empty */ }
-    public static class SecuritySettingsActivity extends Settings { /* empty */ }
-    public static class LocationSettingsActivity extends Settings { /* empty */ }
-    public static class PrivacySettingsActivity extends Settings { /* empty */ }
-    public static class RunningServicesActivity extends Settings { /* empty */ }
-    public static class ManageAccountsSettingsActivity extends Settings { /* empty */ }
-    public static class PowerUsageSummaryActivity extends Settings { /* empty */ }
-    public static class AccountSyncSettingsActivity extends Settings { /* empty */ }
-    public static class AccountSyncSettingsInAddAccountActivity extends Settings { /* empty */ }
-    public static class CryptKeeperSettingsActivity extends Settings { /* empty */ }
-    public static class DeviceAdminSettingsActivity extends Settings { /* empty */ }
-    public static class DataUsageSummaryActivity extends Settings { /* empty */ }
-    public static class AdvancedWifiSettingsActivity extends Settings { /* empty */ }
-    public static class TextToSpeechSettingsActivity extends Settings { /* empty */ }
-    public static class AndroidBeamSettingsActivity extends Settings { /* empty */ }
-    public static class WifiDisplaySettingsActivity extends Settings { /* empty */ }
-    public static class DreamSettingsActivity extends Settings { /* empty */ }
-    public static class NotificationStationActivity extends Settings { /* empty */ }
-    public static class UserSettingsActivity extends Settings { /* empty */ }
-    public static class NotificationAccessSettingsActivity extends Settings { /* empty */ }
-    public static class UsbSettingsActivity extends Settings { /* empty */ }
-    public static class TrustedCredentialsSettingsActivity extends Settings { /* empty */ }
-    public static class PaymentSettingsActivity extends Settings { /* empty */ }
-    public static class PrintSettingsActivity extends Settings { /* empty */ }
-    public static class PrintJobSettingsActivity extends Settings { /* empty */ }
+    public static class StorageUseActivity extends SettingsActivity { /* empty */ }
+    public static class DevelopmentSettingsActivity extends SettingsActivity { /* empty */ }
+    public static class AccessibilitySettingsActivity extends SettingsActivity { /* empty */ }
+    public static class CaptioningSettingsActivity extends SettingsActivity { /* empty */ }
+    public static class AccessibilityInversionSettingsActivity extends SettingsActivity { /* empty */ }
+    public static class AccessibilityContrastSettingsActivity extends SettingsActivity { /* empty */ }
+    public static class AccessibilityDaltonizerSettingsActivity extends SettingsActivity { /* empty */ }
+    public static class SecuritySettingsActivity extends SettingsActivity { /* empty */ }
+    public static class LocationSettingsActivity extends SettingsActivity { /* empty */ }
+    public static class PrivacySettingsActivity extends SettingsActivity { /* empty */ }
+    public static class RunningServicesActivity extends SettingsActivity { /* empty */ }
+    public static class ManageAccountsSettingsActivity extends SettingsActivity { /* empty */ }
+    public static class PowerUsageSummaryActivity extends SettingsActivity { /* empty */ }
+    public static class ChooseAccountActivity extends SettingsActivity { /* empty */ }
+    public static class AccountSyncSettingsActivity extends SettingsActivity { /* empty */ }
+    public static class AccountSyncSettingsInAddAccountActivity extends SettingsActivity { /* empty */ }
+    public static class CryptKeeperSettingsActivity extends SettingsActivity { /* empty */ }
+    public static class DeviceAdminSettingsActivity extends SettingsActivity { /* empty */ }
+    public static class DataUsageSummaryActivity extends SettingsActivity { /* empty */ }
+    public static class AdvancedWifiSettingsActivity extends SettingsActivity { /* empty */ }
+    public static class TextToSpeechSettingsActivity extends SettingsActivity { /* empty */ }
+    public static class AndroidBeamSettingsActivity extends SettingsActivity { /* empty */ }
+    public static class WifiDisplaySettingsActivity extends SettingsActivity { /* empty */ }
+    public static class DreamSettingsActivity extends SettingsActivity { /* empty */ }
+    public static class NotificationStationActivity extends SettingsActivity { /* empty */ }
+    public static class UserSettingsActivity extends SettingsActivity { /* empty */ }
+    public static class NotificationAccessSettingsActivity extends SettingsActivity { /* empty */ }
+    public static class UsbSettingsActivity extends SettingsActivity { /* empty */ }
+    public static class TrustedCredentialsSettingsActivity extends SettingsActivity { /* empty */ }
+    public static class PaymentSettingsActivity extends SettingsActivity { /* empty */ }
+    public static class PrintSettingsActivity extends SettingsActivity { /* empty */ }
+    public static class PrintJobSettingsActivity extends SettingsActivity { /* empty */ }
+
+    public static class TopLevelSettings extends SettingsActivity { /* empty */ }
 }
+
diff --git a/src/com/android/settings/SettingsActivity.java b/src/com/android/settings/SettingsActivity.java
new file mode 100644
index 0000000..c3d067f
--- /dev/null
+++ b/src/com/android/settings/SettingsActivity.java
@@ -0,0 +1,1770 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings;
+
+import android.accounts.Account;
+import android.accounts.AccountManager;
+import android.accounts.OnAccountsUpdateListener;
+import android.app.ActionBar;
+import android.app.Activity;
+import android.app.Fragment;
+import android.app.FragmentManager;
+import android.app.FragmentTransaction;
+import android.app.AlertDialog;
+import android.app.Dialog;
+import android.app.DialogFragment;
+import android.app.admin.DevicePolicyManager;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.content.SharedPreferences;
+import android.content.pm.ActivityInfo;
+import android.content.pm.PackageManager;
+import android.content.pm.PackageManager.NameNotFoundException;
+import android.content.pm.ResolveInfo;
+import android.content.res.Configuration;
+import android.content.res.Resources;
+import android.content.res.TypedArray;
+import android.content.res.XmlResourceParser;
+import android.graphics.drawable.Drawable;
+import android.nfc.NfcAdapter;
+import android.os.Bundle;
+import android.os.Handler;
+import android.os.INetworkManagementService;
+import android.os.Message;
+import android.os.Parcel;
+import android.os.Parcelable;
+import android.os.RemoteException;
+import android.os.ServiceManager;
+import android.os.UserHandle;
+import android.os.UserManager;
+import android.preference.Preference;
+import android.preference.PreferenceFragment;
+import android.preference.PreferenceManager;
+import android.preference.PreferenceScreen;
+import android.support.v4.app.ActionBarDrawerToggle;
+import android.support.v4.widget.DrawerLayout;
+import android.text.TextUtils;
+import android.util.AttributeSet;
+import android.util.Log;
+import android.util.Pair;
+import android.util.TypedValue;
+import android.util.Xml;
+import android.view.LayoutInflater;
+import android.view.MenuItem;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.view.ViewGroup;
+import android.widget.AbsListView;
+import android.widget.AdapterView;
+import android.widget.ArrayAdapter;
+import android.widget.Button;
+import android.widget.ImageButton;
+import android.widget.ImageView;
+import android.widget.ListView;
+import android.widget.Switch;
+import android.widget.TextView;
+
+import com.android.internal.util.ArrayUtils;
+import com.android.internal.util.XmlUtils;
+import com.android.settings.accessibility.AccessibilitySettings;
+import com.android.settings.accessibility.CaptionPropertiesFragment;
+import com.android.settings.accounts.AccountSyncSettings;
+import com.android.settings.accounts.AuthenticatorHelper;
+import com.android.settings.accounts.ChooseAccountFragment;
+import com.android.settings.accounts.ManageAccountsSettings;
+import com.android.settings.applications.ManageApplications;
+import com.android.settings.applications.ProcessStatsUi;
+import com.android.settings.bluetooth.BluetoothEnabler;
+import com.android.settings.bluetooth.BluetoothSettings;
+import com.android.settings.dashboard.DashboardSummary;
+import com.android.settings.deviceinfo.Memory;
+import com.android.settings.deviceinfo.UsbSettings;
+import com.android.settings.fuelgauge.PowerUsageSummary;
+import com.android.settings.inputmethod.InputMethodAndLanguageSettings;
+import com.android.settings.inputmethod.KeyboardLayoutPickerFragment;
+import com.android.settings.inputmethod.SpellCheckersSettings;
+import com.android.settings.inputmethod.UserDictionaryList;
+import com.android.settings.location.LocationSettings;
+import com.android.settings.nfc.AndroidBeam;
+import com.android.settings.nfc.PaymentSettings;
+import com.android.settings.print.PrintJobSettingsFragment;
+import com.android.settings.print.PrintSettingsFragment;
+import com.android.settings.tts.TextToSpeechSettings;
+import com.android.settings.users.UserSettings;
+import com.android.settings.vpn2.VpnSettings;
+import com.android.settings.wfd.WifiDisplaySettings;
+import com.android.settings.wifi.AdvancedWifiSettings;
+import com.android.settings.wifi.WifiEnabler;
+import com.android.settings.wifi.WifiSettings;
+import com.android.settings.wifi.p2p.WifiP2pSettings;
+import org.xmlpull.v1.XmlPullParser;
+import org.xmlpull.v1.XmlPullParserException;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Comparator;
+import java.util.HashMap;
+import java.util.List;
+
+public class SettingsActivity extends Activity
+        implements PreferenceManager.OnPreferenceTreeClickListener,
+        PreferenceFragment.OnPreferenceStartFragmentCallback,
+        ButtonBarHandler, OnAccountsUpdateListener, FragmentManager.OnBackStackChangedListener {
+
+    private static final String LOG_TAG = "Settings";
+
+    // Constants for state save/restore
+    private static final String HEADERS_TAG = ":settings:headers";
+    private static final String CUR_HEADER_TAG = ":settings:cur_header";
+
+    /**
+     * When starting this activity, the invoking Intent can contain this extra
+     * string to specify which fragment should be initially displayed.
+     * <p/>Starting from Key Lime Pie, when this argument is passed in, the activity
+     * will call isValidFragment() to confirm that the fragment class name is valid for this
+     * activity.
+     */
+    public static final String EXTRA_SHOW_FRAGMENT = ":settings:show_fragment";
+
+    /**
+     * When starting this activity and using {@link #EXTRA_SHOW_FRAGMENT},
+     * this extra can also be specified to supply a Bundle of arguments to pass
+     * to that fragment when it is instantiated during the initial creation
+     * of the activity.
+     */
+    public static final String EXTRA_SHOW_FRAGMENT_ARGUMENTS = ":settings:show_fragment_args";
+
+    /**
+     * When starting this activity, the invoking Intent can contain this extra
+     * boolean that the header list should not be displayed.  This is most often
+     * used in conjunction with {@link #EXTRA_SHOW_FRAGMENT} to launch
+     * the activity to display a specific fragment that the user has navigated
+     * to.
+     */
+    public static final String EXTRA_NO_HEADERS = ":settings:no_headers";
+
+    // extras that allow any preference activity to be launched as part of a wizard
+
+    // show Back and Next buttons? takes boolean parameter
+    // Back will then return RESULT_CANCELED and Next RESULT_OK
+    protected static final String EXTRA_PREFS_SHOW_BUTTON_BAR = "extra_prefs_show_button_bar";
+
+    // add a Skip button?
+    private static final String EXTRA_PREFS_SHOW_SKIP = "extra_prefs_show_skip";
+
+    // specify custom text for the Back or Next buttons, or cause a button to not appear
+    // at all by setting it to null
+    protected static final String EXTRA_PREFS_SET_NEXT_TEXT = "extra_prefs_set_next_text";
+    protected static final String EXTRA_PREFS_SET_BACK_TEXT = "extra_prefs_set_back_text";
+
+    /**
+     * When starting this activity and using {@link #EXTRA_SHOW_FRAGMENT},
+     * this extra can also be specify to supply the title to be shown for
+     * that fragment.
+     */
+    protected static final String EXTRA_SHOW_FRAGMENT_TITLE = ":settings:show_fragment_title";
+
+    private static final String BACK_STACK_PREFS = ":settings:prefs";
+
+    private static final String META_DATA_KEY_HEADER_ID =
+        "com.android.settings.TOP_LEVEL_HEADER_ID";
+
+    private static final String META_DATA_KEY_FRAGMENT_CLASS =
+        "com.android.settings.FRAGMENT_CLASS";
+
+    private static final String EXTRA_UI_OPTIONS = "settings:ui_options";
+
+    private static final String SAVE_KEY_CURRENT_HEADER = "com.android.settings.CURRENT_HEADER";
+
+    private static boolean sShowNoHomeNotice = false;
+
+    private String mFragmentClass;
+    private int mTopLevelHeaderId;
+    private Header mFirstHeader;
+    private Header mCurrentHeader;
+
+    // Show only these settings for restricted users
+    private int[] SETTINGS_FOR_RESTRICTED = {
+            R.id.wireless_section,
+            R.id.wifi_settings,
+            R.id.bluetooth_settings,
+            R.id.data_usage_settings,
+            R.id.wireless_settings,
+            R.id.device_section,
+            R.id.sound_settings,
+            R.id.display_settings,
+            R.id.storage_settings,
+            R.id.application_settings,
+            R.id.battery_settings,
+            R.id.personal_section,
+            R.id.location_settings,
+            R.id.security_settings,
+            R.id.language_settings,
+            R.id.user_settings,
+            R.id.account_settings,
+            R.id.account_add,
+            R.id.system_section,
+            R.id.date_time_settings,
+            R.id.about_settings,
+            R.id.accessibility_settings,
+            R.id.print_settings,
+            R.id.nfc_payment_settings,
+            R.id.home_settings
+    };
+
+    private static final String[] ENTRY_FRAGMENTS = {
+            WirelessSettings.class.getName(),
+            WifiSettings.class.getName(),
+            AdvancedWifiSettings.class.getName(),
+            BluetoothSettings.class.getName(),
+            TetherSettings.class.getName(),
+            WifiP2pSettings.class.getName(),
+            VpnSettings.class.getName(),
+            DateTimeSettings.class.getName(),
+            LocalePicker.class.getName(),
+            InputMethodAndLanguageSettings.class.getName(),
+            SpellCheckersSettings.class.getName(),
+            UserDictionaryList.class.getName(),
+            UserDictionarySettings.class.getName(),
+            SoundSettings.class.getName(),
+            DisplaySettings.class.getName(),
+            DeviceInfoSettings.class.getName(),
+            ManageApplications.class.getName(),
+            ProcessStatsUi.class.getName(),
+            NotificationStation.class.getName(),
+            LocationSettings.class.getName(),
+            SecuritySettings.class.getName(),
+            PrivacySettings.class.getName(),
+            DeviceAdminSettings.class.getName(),
+            AccessibilitySettings.class.getName(),
+            CaptionPropertiesFragment.class.getName(),
+            com.android.settings.accessibility.ToggleInversionPreferenceFragment.class.getName(),
+            com.android.settings.accessibility.ToggleContrastPreferenceFragment.class.getName(),
+            com.android.settings.accessibility.ToggleDaltonizerPreferenceFragment.class.getName(),
+            TextToSpeechSettings.class.getName(),
+            Memory.class.getName(),
+            DevelopmentSettings.class.getName(),
+            UsbSettings.class.getName(),
+            AndroidBeam.class.getName(),
+            WifiDisplaySettings.class.getName(),
+            PowerUsageSummary.class.getName(),
+            AccountSyncSettings.class.getName(),
+            CryptKeeperSettings.class.getName(),
+            DataUsageSummary.class.getName(),
+            DreamSettings.class.getName(),
+            UserSettings.class.getName(),
+            NotificationAccessSettings.class.getName(),
+            ManageAccountsSettings.class.getName(),
+            PrintSettingsFragment.class.getName(),
+            PrintJobSettingsFragment.class.getName(),
+            TrustedCredentialsSettings.class.getName(),
+            PaymentSettings.class.getName(),
+            KeyboardLayoutPickerFragment.class.getName(),
+            ChooseAccountFragment.class.getName(),
+            DashboardSummary.class.getName()
+    };
+
+    private SharedPreferences mDevelopmentPreferences;
+    private SharedPreferences.OnSharedPreferenceChangeListener mDevelopmentPreferencesListener;
+
+    // TODO: Update Call Settings based on airplane mode state.
+
+    protected HashMap<Integer, Integer> mHeaderIndexMap = new HashMap<Integer, Integer>();
+
+    private AuthenticatorHelper mAuthenticatorHelper;
+    private boolean mListeningToAccountUpdates;
+
+    private Button mNextButton;
+
+    private boolean mBatteryPresent = true;
+    private BroadcastReceiver mBatteryInfoReceiver = new BroadcastReceiver() {
+
+        @Override
+        public void onReceive(Context context, Intent intent) {
+            String action = intent.getAction();
+            if (Intent.ACTION_BATTERY_CHANGED.equals(action)) {
+                boolean batteryPresent = Utils.isBatteryPresent(intent);
+
+                if (mBatteryPresent != batteryPresent) {
+                    mBatteryPresent = batteryPresent;
+                    invalidateHeaders();
+                }
+            }
+        }
+    };
+
+    private final ArrayList<Header> mHeaders = new ArrayList<Header>();
+    private Header mCurHeader;
+    private HeaderAdapter mHeaderAdapter;
+
+    private class TitlePair extends Pair<Integer, CharSequence> {
+
+        public TitlePair(Integer first, CharSequence second) {
+            super(first, second);
+        }
+    }
+
+    private final ArrayList<TitlePair> mTitleStack = new ArrayList<TitlePair>();
+
+    private DrawerLayout mDrawerLayout;
+    private ListView mDrawer;
+    private ActionBarDrawerToggle mDrawerToggle;
+    private ActionBar mActionBar;
+
+    private static final int MSG_BUILD_HEADERS = 1;
+    private Handler mHandler = new Handler() {
+        @Override
+        public void handleMessage(Message msg) {
+            switch (msg.what) {
+                case MSG_BUILD_HEADERS: {
+                    mHeaders.clear();
+                    onBuildHeaders(mHeaders);
+                    mHeaderAdapter.notifyDataSetChanged();
+                    if (mCurHeader != null) {
+                        Header mappedHeader = findBestMatchingHeader(mCurHeader, mHeaders);
+                        if (mappedHeader != null) {
+                            setSelectedHeader(mappedHeader);
+                        }
+                    }
+                } break;
+            }
+        }
+    };
+
+    @Override
+    public boolean onPreferenceStartFragment(PreferenceFragment caller, Preference pref) {
+        // Override the fragment title for Wallpaper settings
+        int titleRes = pref.getTitleRes();
+        if (pref.getFragment().equals(WallpaperTypeSettings.class.getName())) {
+            titleRes = R.string.wallpaper_settings_fragment_title;
+        } else if (pref.getFragment().equals(OwnerInfoSettings.class.getName())
+                && UserHandle.myUserId() != UserHandle.USER_OWNER) {
+            if (UserManager.get(this).isLinkedUser()) {
+                titleRes = R.string.profile_info_settings_title;
+            } else {
+                titleRes = R.string.user_info_settings_title;
+            }
+        }
+        startPreferencePanel(pref.getFragment(), pref.getExtras(), titleRes, pref.getTitle(),
+                null, 0);
+        return true;
+    }
+
+    @Override
+    public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) {
+        return false;
+    }
+
+    private class DrawerListener implements DrawerLayout.DrawerListener {
+        @Override
+        public void onDrawerOpened(View drawerView) {
+            mDrawerToggle.onDrawerOpened(drawerView);
+        }
+
+        @Override
+        public void onDrawerClosed(View drawerView) {
+            mDrawerToggle.onDrawerClosed(drawerView);
+            onHeaderClick(mCurrentHeader);
+        }
+
+        @Override
+        public void onDrawerSlide(View drawerView, float slideOffset) {
+            mDrawerToggle.onDrawerSlide(drawerView, slideOffset);
+        }
+
+        @Override
+        public void onDrawerStateChanged(int newState) {
+            mDrawerToggle.onDrawerStateChanged(newState);
+        }
+    }
+
+    private class DrawerItemClickListener implements ListView.OnItemClickListener {
+        @Override
+        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
+            mDrawerLayout.closeDrawer(mDrawer);
+            onListItemClick((ListView)parent, view, position, id);
+        }
+    }
+
+    private Header findBestMatchingHeader(Header cur, ArrayList<Header> from) {
+        ArrayList<Header> matches = new ArrayList<Header>();
+        for (int j=0; j<from.size(); j++) {
+            Header oh = from.get(j);
+            if (cur == oh || (cur.id != HEADER_ID_UNDEFINED && cur.id == oh.id)) {
+                // Must be this one.
+                matches.clear();
+                matches.add(oh);
+                break;
+            }
+            if (cur.fragment != null) {
+                if (cur.fragment.equals(oh.fragment)) {
+                    matches.add(oh);
+                }
+            } else if (cur.intent != null) {
+                if (cur.intent.equals(oh.intent)) {
+                    matches.add(oh);
+                }
+            } else if (cur.title != null) {
+                if (cur.title.equals(oh.title)) {
+                    matches.add(oh);
+                }
+            }
+        }
+        final int NM = matches.size();
+        if (NM == 1) {
+            return matches.get(0);
+        } else if (NM > 1) {
+            for (int j=0; j<NM; j++) {
+                Header oh = matches.get(j);
+                if (cur.fragmentArguments != null &&
+                        cur.fragmentArguments.equals(oh.fragmentArguments)) {
+                    return oh;
+                }
+                if (cur.extras != null && cur.extras.equals(oh.extras)) {
+                    return oh;
+                }
+                if (cur.title != null && cur.title.equals(oh.title)) {
+                    return oh;
+                }
+            }
+        }
+        return null;
+    }
+
+    private void invalidateHeaders() {
+        if (!mHandler.hasMessages(MSG_BUILD_HEADERS)) {
+            mHandler.sendEmptyMessage(MSG_BUILD_HEADERS);
+        }
+    }
+
+    @Override
+    protected void onPostCreate(Bundle savedInstanceState) {
+        super.onPostCreate(savedInstanceState);
+
+        // Sync the toggle state after onRestoreInstanceState has occurred.
+        if (mDrawerToggle != null) {
+            mDrawerToggle.syncState();
+        }
+    }
+
+    @Override
+    public void onConfigurationChanged(Configuration newConfig) {
+        super.onConfigurationChanged(newConfig);
+        if (mDrawerToggle != null) {
+            mDrawerToggle.onConfigurationChanged(newConfig);
+        }
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        if (mDrawerToggle != null && mDrawerToggle.onOptionsItemSelected(item)) {
+            return true;
+        }
+        return super.onOptionsItemSelected(item);
+    }
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        if (getIntent().hasExtra(EXTRA_UI_OPTIONS)) {
+            getWindow().setUiOptions(getIntent().getIntExtra(EXTRA_UI_OPTIONS, 0));
+        }
+
+        mAuthenticatorHelper = new AuthenticatorHelper();
+        mAuthenticatorHelper.updateAuthDescriptions(this);
+        mAuthenticatorHelper.onAccountsUpdated(this, null);
+
+        DevicePolicyManager dpm =
+                (DevicePolicyManager) getSystemService(Context.DEVICE_POLICY_SERVICE);
+        mHeaderAdapter= new HeaderAdapter(this, getHeaders(), mAuthenticatorHelper, dpm);
+
+        mDevelopmentPreferences = getSharedPreferences(DevelopmentSettings.PREF_FILE,
+                Context.MODE_PRIVATE);
+
+        getMetaData();
+
+        super.onCreate(savedInstanceState);
+
+        setContentView(R.layout.settings_main);
+
+        getFragmentManager().addOnBackStackChangedListener(this);
+
+        mActionBar = getActionBar();
+        if (mActionBar != null) {
+            mActionBar.setDisplayHomeAsUpEnabled(true);
+            mActionBar.setHomeButtonEnabled(true);
+
+            mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
+            mDrawerLayout.setDrawerListener(new DrawerListener());
+
+            mDrawer = (ListView) findViewById(R.id.headers_drawer);
+            mDrawer.setAdapter(mHeaderAdapter);
+            mDrawer.setOnItemClickListener(new DrawerItemClickListener());
+            mDrawer.setChoiceMode(AbsListView.CHOICE_MODE_SINGLE);
+
+            mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout,
+                    R.drawable.ic_drawer, R.string.drawer_open, R.string.drawer_close);
+        }
+
+        String initialFragment = getIntent().getStringExtra(EXTRA_SHOW_FRAGMENT);
+        Bundle initialArguments = getIntent().getBundleExtra(EXTRA_SHOW_FRAGMENT_ARGUMENTS);
+
+        if (savedInstanceState != null) {
+            // We are restarting from a previous saved state; used that to
+            // initialize, instead of starting fresh.
+            ArrayList<Header> headers = savedInstanceState.getParcelableArrayList(HEADERS_TAG);
+            if (headers != null) {
+                mHeaders.addAll(headers);
+                int curHeader = savedInstanceState.getInt(CUR_HEADER_TAG,
+                        (int) HEADER_ID_UNDEFINED);
+                if (curHeader >= 0 && curHeader < mHeaders.size()) {
+                    setSelectedHeader(mHeaders.get(curHeader));
+                }
+            }
+
+        } else {
+            if (initialFragment != null) {
+                // If we are just showing a fragment, we want to run in
+                // new fragment mode, but don't need to compute and show
+                // the headers.
+                switchToHeader(initialFragment, initialArguments, true);
+
+                final int initialTitle = getIntent().getIntExtra(EXTRA_SHOW_FRAGMENT_TITLE, 0);
+                if (initialTitle != 0) {
+                    setTitle(getText(initialTitle));
+                }
+            } else {
+                // We need to try to build the headers.
+                onBuildHeaders(mHeaders);
+
+                // If there are headers, then at this point we need to show
+                // them and, depending on the screen, we may also show in-line
+                // the currently selected preference fragment.
+                if (mHeaders.size() > 0) {
+                    if (initialFragment == null) {
+                        Header h = onGetInitialHeader();
+                        switchToHeader(h, false);
+                    } else {
+                        switchToHeader(initialFragment, initialArguments, false);
+                    }
+                }
+            }
+        }
+
+        // see if we should show Back/Next buttons
+        Intent intent = getIntent();
+        if (intent.getBooleanExtra(EXTRA_PREFS_SHOW_BUTTON_BAR, false)) {
+
+            View buttonBar = findViewById(com.android.internal.R.id.button_bar);
+            if (buttonBar != null) {
+                buttonBar.setVisibility(View.VISIBLE);
+
+                Button backButton = (Button)findViewById(com.android.internal.R.id.back_button);
+                backButton.setOnClickListener(new OnClickListener() {
+                    public void onClick(View v) {
+                        setResult(RESULT_CANCELED);
+                        finish();
+                    }
+                });
+                Button skipButton = (Button)findViewById(com.android.internal.R.id.skip_button);
+                skipButton.setOnClickListener(new OnClickListener() {
+                    public void onClick(View v) {
+                        setResult(RESULT_OK);
+                        finish();
+                    }
+                });
+                mNextButton = (Button)findViewById(com.android.internal.R.id.next_button);
+                mNextButton.setOnClickListener(new OnClickListener() {
+                    public void onClick(View v) {
+                        setResult(RESULT_OK);
+                        finish();
+                    }
+                });
+
+                // set our various button parameters
+                if (intent.hasExtra(EXTRA_PREFS_SET_NEXT_TEXT)) {
+                    String buttonText = intent.getStringExtra(EXTRA_PREFS_SET_NEXT_TEXT);
+                    if (TextUtils.isEmpty(buttonText)) {
+                        mNextButton.setVisibility(View.GONE);
+                    }
+                    else {
+                        mNextButton.setText(buttonText);
+                    }
+                }
+                if (intent.hasExtra(EXTRA_PREFS_SET_BACK_TEXT)) {
+                    String buttonText = intent.getStringExtra(EXTRA_PREFS_SET_BACK_TEXT);
+                    if (TextUtils.isEmpty(buttonText)) {
+                        backButton.setVisibility(View.GONE);
+                    }
+                    else {
+                        backButton.setText(buttonText);
+                    }
+                }
+                if (intent.getBooleanExtra(EXTRA_PREFS_SHOW_SKIP, false)) {
+                    skipButton.setVisibility(View.VISIBLE);
+                }
+            }
+        }
+
+        if (!onIsHidingHeaders()) {
+            highlightHeader(mTopLevelHeaderId);
+        }
+
+        // Retrieve any saved state
+        if (savedInstanceState != null) {
+            mCurrentHeader = savedInstanceState.getParcelable(SAVE_KEY_CURRENT_HEADER);
+        }
+    }
+
+    @Override
+    public void onBackStackChanged() {
+        final int count = getFragmentManager().getBackStackEntryCount() + 1;
+        TitlePair pair = null;
+        int last;
+        while (mTitleStack.size() > count) {
+            last = mTitleStack.size() - 1;
+            pair = mTitleStack.remove(last);
+        }
+        // Check if we go back
+        if (pair != null) {
+            int size = mTitleStack.size();
+            if (size > 0) {
+                last = mTitleStack.size() - 1;
+                pair = mTitleStack.get(last);
+                if (pair != null) {
+                    final CharSequence title;
+                    if (pair.first > 0) {
+                        title = getText(pair.first);
+                    } else {
+                        title = pair.second;
+                    }
+                    setTitle(title);
+                }
+            }
+        }
+    }
+
+    /**
+     * Returns the Header list
+     */
+    private List<Header> getHeaders() {
+        return mHeaders;
+    }
+
+    @Override
+    protected void onSaveInstanceState(Bundle outState) {
+        super.onSaveInstanceState(outState);
+
+        if (mHeaders.size() > 0) {
+            outState.putParcelableArrayList(HEADERS_TAG, mHeaders);
+            if (mCurHeader != null) {
+                int index = mHeaders.indexOf(mCurHeader);
+                if (index >= 0) {
+                    outState.putInt(CUR_HEADER_TAG, index);
+                }
+            }
+        }
+
+        // Save the current fragment, if it is the same as originally launched
+        if (mCurrentHeader != null) {
+            outState.putParcelable(SAVE_KEY_CURRENT_HEADER, mCurrentHeader);
+        }
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+
+        mDevelopmentPreferencesListener = new SharedPreferences.OnSharedPreferenceChangeListener() {
+            @Override
+            public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
+                invalidateHeaders();
+            }
+        };
+        mDevelopmentPreferences.registerOnSharedPreferenceChangeListener(
+                mDevelopmentPreferencesListener);
+
+        mHeaderAdapter.resume();
+        invalidateHeaders();
+
+        registerReceiver(mBatteryInfoReceiver, new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
+    }
+
+    @Override
+    public void onPause() {
+        super.onPause();
+
+        unregisterReceiver(mBatteryInfoReceiver);
+
+        mHeaderAdapter.pause();
+
+        mDevelopmentPreferences.unregisterOnSharedPreferenceChangeListener(
+                mDevelopmentPreferencesListener);
+
+        mDevelopmentPreferencesListener = null;
+    }
+
+    @Override
+    public void onDestroy() {
+        super.onDestroy();
+        if (mListeningToAccountUpdates) {
+            AccountManager.get(this).removeOnAccountsUpdatedListener(this);
+        }
+    }
+
+    /**
+     * @hide
+     */
+    protected boolean isValidFragment(String fragmentName) {
+        // Almost all fragments are wrapped in this,
+        // except for a few that have their own activities.
+        for (int i = 0; i < ENTRY_FRAGMENTS.length; i++) {
+            if (ENTRY_FRAGMENTS[i].equals(fragmentName)) return true;
+        }
+        return false;
+    }
+
+    /**
+     * When in two-pane mode, switch to the fragment pane to show the given
+     * preference fragment.
+     *
+     * @param header The new header to display.
+     * @param validate true means that the fragment's Header needs to be validated
+     */
+    private void switchToHeader(Header header, boolean validate) {
+        if (mCurHeader == header) {
+            // This is the header we are currently displaying.  Just make sure
+            // to pop the stack up to its root state.
+            getFragmentManager().popBackStack(BACK_STACK_PREFS,
+                    FragmentManager.POP_BACK_STACK_INCLUSIVE);
+        } else {
+            mTitleStack.clear();
+            if (header.fragment == null) {
+                throw new IllegalStateException("can't switch to header that has no fragment");
+            }
+            switchToHeaderInner(header.fragment, header.fragmentArguments, validate);
+            setSelectedHeader(header);
+            final CharSequence title;
+            if (header.fragment.equals("com.android.settings.dashboard.DashboardSummary")) {
+                title = getResources().getString(R.string.settings_label);
+            } else {
+                title = header.getTitle(getResources());
+            }
+            final TitlePair pair = new TitlePair(0, title);
+            mTitleStack.add(pair);
+            setTitle(title);
+        }
+    }
+
+    private void setSelectedHeader(Header header) {
+        mCurHeader = header;
+        int index = mHeaders.indexOf(header);
+        if (mDrawer != null) {
+            if (index >= 0) {
+                mDrawer.setItemChecked(index, true);
+            } else {
+                mDrawer.clearChoices();
+            }
+        }
+    }
+
+    public Header onGetInitialHeader() {
+        String fragmentClass = getStartingFragmentClass(super.getIntent());
+        if (fragmentClass != null) {
+            Header header = new Header();
+            header.fragment = fragmentClass;
+            header.title = getTitle();
+            header.fragmentArguments = getIntent().getExtras();
+            mCurrentHeader = header;
+            return header;
+        }
+
+        return mFirstHeader;
+    }
+
+    /**
+     * When in two-pane mode, switch the fragment pane to show the given
+     * preference fragment.
+     *
+     * @param fragmentName The name of the fragment to display.
+     * @param args Optional arguments to supply to the fragment.
+     * @param validate true means that the fragment's Header needs to be validated
+     */
+    private void switchToHeader(String fragmentName, Bundle args, boolean validate) {
+        setSelectedHeader(null);
+        switchToHeaderInner(fragmentName, args, validate);
+    }
+
+    private void switchToHeaderInner(String fragmentName, Bundle args, boolean validate) {
+        getFragmentManager().popBackStack(BACK_STACK_PREFS,
+                FragmentManager.POP_BACK_STACK_INCLUSIVE);
+        if (validate && !isValidFragment(fragmentName)) {
+            throw new IllegalArgumentException("Invalid fragment for this activity: "
+                    + fragmentName);
+        }
+        Fragment f = Fragment.instantiate(this, fragmentName, args);
+        FragmentTransaction transaction = getFragmentManager().beginTransaction();
+        transaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
+        transaction.replace(R.id.prefs, f);
+        transaction.commitAllowingStateLoss();
+    }
+
+    @Override
+    public void onNewIntent(Intent intent) {
+        super.onNewIntent(intent);
+
+        // If it is not launched from history, then reset to top-level
+        if ((intent.getFlags() & Intent.FLAG_ACTIVITY_LAUNCHED_FROM_HISTORY) == 0) {
+            if (mDrawer != null) {
+                mDrawer.setSelectionFromTop(0, 0);
+            }
+        }
+    }
+
+    /**
+     * Called to determine whether the header list should be hidden.
+     * The default implementation returns the
+     * value given in {@link #EXTRA_NO_HEADERS} or false if it is not supplied.
+     * This is set to false, for example, when the activity is being re-launched
+     * to show a particular preference activity.
+     */
+    public boolean onIsHidingHeaders() {
+        return getIntent().getBooleanExtra(EXTRA_NO_HEADERS, false);
+    }
+
+    private void highlightHeader(int id) {
+        if (id != 0) {
+            Integer index = mHeaderIndexMap.get(id);
+            if (index != null && mDrawer != null) {
+                mDrawer.setItemChecked(index, true);
+                if (mDrawer.getVisibility() == View.VISIBLE) {
+                    mDrawer.smoothScrollToPosition(index);
+                }
+            }
+        }
+    }
+
+    @Override
+    public Intent getIntent() {
+        Intent superIntent = super.getIntent();
+        String startingFragment = getStartingFragmentClass(superIntent);
+        // This is called from super.onCreate, isMultiPane() is not yet reliable
+        // Do not use onIsHidingHeaders either, which relies itself on this method
+        if (startingFragment != null) {
+            Intent modIntent = new Intent(superIntent);
+            modIntent.putExtra(EXTRA_SHOW_FRAGMENT, startingFragment);
+            Bundle args = superIntent.getExtras();
+            if (args != null) {
+                args = new Bundle(args);
+            } else {
+                args = new Bundle();
+            }
+            args.putParcelable("intent", superIntent);
+            modIntent.putExtra(EXTRA_SHOW_FRAGMENT_ARGUMENTS, superIntent.getExtras());
+            return modIntent;
+        }
+        return superIntent;
+    }
+
+    /**
+     * Checks if the component name in the intent is different from the Settings class and
+     * returns the class name to load as a fragment.
+     */
+    private String getStartingFragmentClass(Intent intent) {
+        if (mFragmentClass != null) return mFragmentClass;
+
+        String intentClass = intent.getComponent().getClassName();
+        if (intentClass.equals(getClass().getName())) return null;
+
+        if ("com.android.settings.ManageApplications".equals(intentClass)
+                || "com.android.settings.RunningServices".equals(intentClass)
+                || "com.android.settings.applications.StorageUse".equals(intentClass)) {
+            // Old names of manage apps.
+            intentClass = com.android.settings.applications.ManageApplications.class.getName();
+        }
+
+        return intentClass;
+    }
+
+    /**
+     * Start a new fragment containing a preference panel.  If the preferences
+     * are being displayed in multi-pane mode, the given fragment class will
+     * be instantiated and placed in the appropriate pane.  If running in
+     * single-pane mode, a new activity will be launched in which to show the
+     * fragment.
+     *
+     * @param fragmentClass Full name of the class implementing the fragment.
+     * @param args Any desired arguments to supply to the fragment.
+     * @param titleRes Optional resource identifier of the title of this
+     * fragment.
+     * @param titleText Optional text of the title of this fragment.
+     * @param resultTo Optional fragment that result data should be sent to.
+     * If non-null, resultTo.onActivityResult() will be called when this
+     * preference panel is done.  The launched panel must use
+     * {@link #finishPreferencePanel(Fragment, int, Intent)} when done.
+     * @param resultRequestCode If resultTo is non-null, this is the caller's
+     * request code to be received with the resut.
+     */
+    public void startPreferencePanel(String fragmentClass, Bundle args, int titleRes,
+                                     CharSequence titleText, Fragment resultTo,
+                                     int resultRequestCode) {
+        startWithFragment(fragmentClass, args, resultTo, resultRequestCode, titleRes, 0);
+    }
+
+    /**
+     * Called by a preference panel fragment to finish itself.
+     *
+     * @param caller The fragment that is asking to be finished.
+     * @param resultCode Optional result code to send back to the original
+     * launching fragment.
+     * @param resultData Optional result data to send back to the original
+     * launching fragment.
+     */
+    public void finishPreferencePanel(Fragment caller, int resultCode, Intent resultData) {
+        setResult(resultCode, resultData);
+    }
+
+    /**
+     * Start a new fragment.
+     *
+     * @param fragment The fragment to start
+     * @param push If true, the current fragment will be pushed onto the back stack.  If false,
+     * the current fragment will be replaced.
+     */
+    public void startPreferenceFragment(Fragment fragment, boolean push) {
+        FragmentTransaction transaction = getFragmentManager().beginTransaction();
+        transaction.replace(R.id.prefs, fragment);
+        if (push) {
+            transaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
+            transaction.addToBackStack(BACK_STACK_PREFS);
+        } else {
+            transaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
+        }
+        transaction.commitAllowingStateLoss();
+    }
+
+    /**
+     * Start a new fragment.
+     *
+     * @param fragmentName The name of the fragment to display.
+     * @param args Optional arguments to supply to the fragment.
+     * @param resultTo Option fragment that should receive the result of
+     * the activity launch.
+     * @param resultRequestCode If resultTo is non-null, this is the request
+     * code in which to report the result.
+     * @param titleRes Resource ID of string to display for the title of
+     * this set of preferences.
+     * @param shortTitleRes Resource ID of string to display for the short title of
+     * this set of preferences.
+     */
+    private void startWithFragment(String fragmentName, Bundle args, Fragment resultTo,
+                                   int resultRequestCode, int titleRes, int shortTitleRes) {
+        Fragment f = Fragment.instantiate(this, fragmentName, args);
+        if (resultTo != null) {
+            f.setTargetFragment(resultTo, resultRequestCode);
+        }
+        FragmentTransaction transaction = getFragmentManager().beginTransaction();
+        transaction.replace(R.id.prefs, f);
+        transaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
+        transaction.addToBackStack(BACK_STACK_PREFS);
+        transaction.commitAllowingStateLoss();
+
+        final CharSequence title = getText(titleRes);
+        final TitlePair pair = new TitlePair(titleRes, null);
+        mTitleStack.add(pair);
+        setTitle(title);
+    }
+
+    /**
+     * Called when the activity needs its list of headers build.  By
+     * implementing this and adding at least one item to the list, you
+     * will cause the activity to run in its modern fragment mode.  Note
+     * that this function may not always be called; for example, if the
+     * activity has been asked to display a particular fragment without
+     * the header list, there is no need to build the headers.
+     *
+     * <p>Typical implementations will use {@link #loadHeadersFromResource}
+     * to fill in the list from a resource.
+     *
+     * @param headers The list in which to place the headers.
+     */
+    private void onBuildHeaders(List<Header> headers) {
+        loadHeadersFromResource(R.xml.settings_headers, headers);
+        updateHeaderList(headers);
+    }
+
+    /**
+     * Parse the given XML file as a header description, adding each
+     * parsed Header into the target list.
+     *
+     * @param resid The XML resource to load and parse.
+     * @param target The list in which the parsed headers should be placed.
+     */
+    private void loadHeadersFromResource(int resid, List<Header> target) {
+        XmlResourceParser parser = null;
+        try {
+            parser = getResources().getXml(resid);
+            AttributeSet attrs = Xml.asAttributeSet(parser);
+
+            int type;
+            while ((type=parser.next()) != XmlPullParser.END_DOCUMENT
+                    && type != XmlPullParser.START_TAG) {
+                // Parse next until start tag is found
+            }
+
+            String nodeName = parser.getName();
+            if (!"preference-headers".equals(nodeName)) {
+                throw new RuntimeException(
+                        "XML document must start with <preference-headers> tag; found"
+                                + nodeName + " at " + parser.getPositionDescription());
+            }
+
+            Bundle curBundle = null;
+
+            final int outerDepth = parser.getDepth();
+            while ((type=parser.next()) != XmlPullParser.END_DOCUMENT
+                    && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) {
+                if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) {
+                    continue;
+                }
+
+                nodeName = parser.getName();
+                if ("header".equals(nodeName)) {
+                    Header header = new Header();
+
+                    TypedArray sa = obtainStyledAttributes(
+                            attrs, com.android.internal.R.styleable.PreferenceHeader);
+                    header.id = sa.getResourceId(
+                            com.android.internal.R.styleable.PreferenceHeader_id,
+                            (int)HEADER_ID_UNDEFINED);
+                    TypedValue tv = sa.peekValue(
+                            com.android.internal.R.styleable.PreferenceHeader_title);
+                    if (tv != null && tv.type == TypedValue.TYPE_STRING) {
+                        if (tv.resourceId != 0) {
+                            header.titleRes = tv.resourceId;
+                        } else {
+                            header.title = tv.string;
+                        }
+                    }
+                    tv = sa.peekValue(
+                            com.android.internal.R.styleable.PreferenceHeader_summary);
+                    if (tv != null && tv.type == TypedValue.TYPE_STRING) {
+                        if (tv.resourceId != 0) {
+                            header.summaryRes = tv.resourceId;
+                        } else {
+                            header.summary = tv.string;
+                        }
+                    }
+                    header.iconRes = sa.getResourceId(
+                            com.android.internal.R.styleable.PreferenceHeader_icon, 0);
+                    header.fragment = sa.getString(
+                            com.android.internal.R.styleable.PreferenceHeader_fragment);
+                    sa.recycle();
+
+                    if (curBundle == null) {
+                        curBundle = new Bundle();
+                    }
+
+                    final int innerDepth = parser.getDepth();
+                    while ((type=parser.next()) != XmlPullParser.END_DOCUMENT
+                            && (type != XmlPullParser.END_TAG || parser.getDepth() > innerDepth)) {
+                        if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) {
+                            continue;
+                        }
+
+                        String innerNodeName = parser.getName();
+                        if (innerNodeName.equals("extra")) {
+                            getResources().parseBundleExtra("extra", attrs, curBundle);
+                            XmlUtils.skipCurrentTag(parser);
+
+                        } else if (innerNodeName.equals("intent")) {
+                            header.intent = Intent.parseIntent(getResources(), parser, attrs);
+
+                        } else {
+                            XmlUtils.skipCurrentTag(parser);
+                        }
+                    }
+
+                    if (curBundle.size() > 0) {
+                        header.fragmentArguments = curBundle;
+                        curBundle = null;
+                    }
+
+                    target.add(header);
+                } else {
+                    XmlUtils.skipCurrentTag(parser);
+                }
+            }
+
+        } catch (XmlPullParserException e) {
+            throw new RuntimeException("Error parsing headers", e);
+        } catch (IOException e) {
+            throw new RuntimeException("Error parsing headers", e);
+        } finally {
+            if (parser != null) parser.close();
+        }
+    }
+
+    private void updateHeaderList(List<Header> target) {
+        final boolean showDev = mDevelopmentPreferences.getBoolean(
+                DevelopmentSettings.PREF_SHOW,
+                android.os.Build.TYPE.equals("eng"));
+        int i = 0;
+
+        final UserManager um = (UserManager) getSystemService(Context.USER_SERVICE);
+        mHeaderIndexMap.clear();
+        while (i < target.size()) {
+            Header header = target.get(i);
+            // Ids are integers, so downcasting
+            int id = (int) header.id;
+            if (id == R.id.operator_settings || id == R.id.manufacturer_settings) {
+                Utils.updateHeaderToSpecificActivityFromMetaDataOrRemove(this, target, header);
+            } else if (id == R.id.wifi_settings) {
+                // Remove WiFi Settings if WiFi service is not available.
+                if (!getPackageManager().hasSystemFeature(PackageManager.FEATURE_WIFI)) {
+                    target.remove(i);
+                }
+            } else if (id == R.id.bluetooth_settings) {
+                // Remove Bluetooth Settings if Bluetooth service is not available.
+                if (!getPackageManager().hasSystemFeature(PackageManager.FEATURE_BLUETOOTH)) {
+                    target.remove(i);
+                }
+            } else if (id == R.id.data_usage_settings) {
+                // Remove data usage when kernel module not enabled
+                final INetworkManagementService netManager = INetworkManagementService.Stub
+                        .asInterface(ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE));
+                try {
+                    if (!netManager.isBandwidthControlEnabled()) {
+                        target.remove(i);
+                    }
+                } catch (RemoteException e) {
+                    // ignored
+                }
+            } else if (id == R.id.battery_settings) {
+                // Remove battery settings when battery is not available. (e.g. TV)
+
+                if (!mBatteryPresent) {
+                    target.remove(i);
+                }
+            } else if (id == R.id.account_settings) {
+                int headerIndex = i + 1;
+                i = insertAccountsHeaders(target, headerIndex);
+            } else if (id == R.id.home_settings) {
+                if (!updateHomeSettingHeaders(header)) {
+                    target.remove(i);
+                }
+            } else if (id == R.id.user_settings) {
+                if (!UserHandle.MU_ENABLED
+                        || !UserManager.supportsMultipleUsers()
+                        || Utils.isMonkeyRunning()) {
+                    target.remove(i);
+                }
+            } else if (id == R.id.nfc_payment_settings) {
+                if (!getPackageManager().hasSystemFeature(PackageManager.FEATURE_NFC)) {
+                    target.remove(i);
+                } else {
+                    // Only show if NFC is on and we have the HCE feature
+                    NfcAdapter adapter = NfcAdapter.getDefaultAdapter(this);
+                    if (!adapter.isEnabled() || !getPackageManager().hasSystemFeature(
+                            PackageManager.FEATURE_NFC_HOST_CARD_EMULATION)) {
+                        target.remove(i);
+                    }
+                }
+            } else if (id == R.id.development_settings) {
+                if (!showDev) {
+                    target.remove(i);
+                }
+            } else if (id == R.id.account_add) {
+                if (um.hasUserRestriction(UserManager.DISALLOW_MODIFY_ACCOUNTS)) {
+                    target.remove(i);
+                }
+            }
+
+            if (i < target.size() && target.get(i) == header
+                    && UserHandle.MU_ENABLED && UserHandle.myUserId() != 0
+                    && !ArrayUtils.contains(SETTINGS_FOR_RESTRICTED, id)) {
+                target.remove(i);
+            }
+
+            // Increment if the current one wasn't removed by the Utils code.
+            if (i < target.size() && target.get(i) == header) {
+                // Hold on to the first header, when we need to reset to the top-level
+                if (mFirstHeader == null &&
+                        HeaderAdapter.getHeaderType(header) != HeaderAdapter.HEADER_TYPE_CATEGORY) {
+                    mFirstHeader = header;
+                }
+                mHeaderIndexMap.put(id, i);
+                i++;
+            }
+        }
+    }
+
+    private int insertAccountsHeaders(List<Header> target, int headerIndex) {
+        String[] accountTypes = mAuthenticatorHelper.getEnabledAccountTypes();
+        List<Header> accountHeaders = new ArrayList<Header>(accountTypes.length);
+        for (String accountType : accountTypes) {
+            CharSequence label = mAuthenticatorHelper.getLabelForType(this, accountType);
+            if (label == null) {
+                continue;
+            }
+
+            Account[] accounts = AccountManager.get(this).getAccountsByType(accountType);
+            boolean skipToAccount = accounts.length == 1
+                    && !mAuthenticatorHelper.hasAccountPreferences(accountType);
+            Header accHeader = new Header();
+            accHeader.title = label;
+            if (accHeader.extras == null) {
+                accHeader.extras = new Bundle();
+            }
+            if (skipToAccount) {
+                accHeader.fragment = AccountSyncSettings.class.getName();
+                accHeader.fragmentArguments = new Bundle();
+                // Need this for the icon
+                accHeader.extras.putString(ManageAccountsSettings.KEY_ACCOUNT_TYPE, accountType);
+                accHeader.extras.putParcelable(AccountSyncSettings.ACCOUNT_KEY, accounts[0]);
+                accHeader.fragmentArguments.putParcelable(AccountSyncSettings.ACCOUNT_KEY,
+                        accounts[0]);
+            } else {
+                accHeader.fragment = ManageAccountsSettings.class.getName();
+                accHeader.fragmentArguments = new Bundle();
+                accHeader.extras.putString(ManageAccountsSettings.KEY_ACCOUNT_TYPE, accountType);
+                accHeader.fragmentArguments.putString(ManageAccountsSettings.KEY_ACCOUNT_TYPE,
+                        accountType);
+                    accHeader.fragmentArguments.putString(ManageAccountsSettings.KEY_ACCOUNT_LABEL,
+                            label.toString());
+            }
+            accountHeaders.add(accHeader);
+            mAuthenticatorHelper.preloadDrawableForType(this, accountType);
+        }
+
+        // Sort by label
+        Collections.sort(accountHeaders, new Comparator<Header>() {
+            @Override
+            public int compare(Header h1, Header h2) {
+                return h1.title.toString().compareTo(h2.title.toString());
+            }
+        });
+
+        for (Header header : accountHeaders) {
+            target.add(headerIndex++, header);
+        }
+        if (!mListeningToAccountUpdates) {
+            AccountManager.get(this).addOnAccountsUpdatedListener(this, null, true);
+            mListeningToAccountUpdates = true;
+        }
+        return headerIndex;
+    }
+
+    private boolean updateHomeSettingHeaders(Header header) {
+        // Once we decide to show Home settings, keep showing it forever
+        SharedPreferences sp = getSharedPreferences(HomeSettings.HOME_PREFS, Context.MODE_PRIVATE);
+        if (sp.getBoolean(HomeSettings.HOME_PREFS_DO_SHOW, false)) {
+            return true;
+        }
+
+        try {
+            final ArrayList<ResolveInfo> homeApps = new ArrayList<ResolveInfo>();
+            getPackageManager().getHomeActivities(homeApps);
+            if (homeApps.size() < 2) {
+                // When there's only one available home app, omit this settings
+                // category entirely at the top level UI.  If the user just
+                // uninstalled the penultimate home app candidiate, we also
+                // now tell them about why they aren't seeing 'Home' in the list.
+                if (sShowNoHomeNotice) {
+                    sShowNoHomeNotice = false;
+                    NoHomeDialogFragment.show(this);
+                }
+                return false;
+            } else {
+                // Okay, we're allowing the Home settings category.  Tell it, when
+                // invoked via this front door, that we'll need to be told about the
+                // case when the user uninstalls all but one home app.
+                if (header.fragmentArguments == null) {
+                    header.fragmentArguments = new Bundle();
+                }
+                header.fragmentArguments.putBoolean(HomeSettings.HOME_SHOW_NOTICE, true);
+            }
+        } catch (Exception e) {
+            // Can't look up the home activity; bail on configuring the icon
+            Log.w(LOG_TAG, "Problem looking up home activity!", e);
+        }
+
+        sp.edit().putBoolean(HomeSettings.HOME_PREFS_DO_SHOW, true).apply();
+        return true;
+    }
+
+    private void getMetaData() {
+        try {
+            ActivityInfo ai = getPackageManager().getActivityInfo(getComponentName(),
+                    PackageManager.GET_META_DATA);
+            if (ai == null || ai.metaData == null) return;
+            mTopLevelHeaderId = ai.metaData.getInt(META_DATA_KEY_HEADER_ID);
+            mFragmentClass = ai.metaData.getString(META_DATA_KEY_FRAGMENT_CLASS);
+        } catch (NameNotFoundException nnfe) {
+            // No recovery
+            Log.d(LOG_TAG, "Cannot get Metadata for: " + getComponentName().toString());
+        }
+    }
+
+    // give subclasses access to the Next button
+    public boolean hasNextButton() {
+        return mNextButton != null;
+    }
+
+    public Button getNextButton() {
+        return mNextButton;
+    }
+
+    public static class NoHomeDialogFragment extends DialogFragment {
+        public static void show(Activity parent) {
+            final NoHomeDialogFragment dialog = new NoHomeDialogFragment();
+            dialog.show(parent.getFragmentManager(), null);
+        }
+
+        @Override
+        public Dialog onCreateDialog(Bundle savedInstanceState) {
+            return new AlertDialog.Builder(getActivity())
+                    .setMessage(R.string.only_one_home_message)
+                    .setPositiveButton(android.R.string.ok, null)
+                    .create();
+        }
+    }
+
+    private static class HeaderAdapter extends ArrayAdapter<Header> {
+        static final int HEADER_TYPE_CATEGORY = 0;
+        static final int HEADER_TYPE_NORMAL = 1;
+        static final int HEADER_TYPE_SWITCH = 2;
+        static final int HEADER_TYPE_BUTTON = 3;
+        private static final int HEADER_TYPE_COUNT = HEADER_TYPE_BUTTON + 1;
+
+        private final WifiEnabler mWifiEnabler;
+        private final BluetoothEnabler mBluetoothEnabler;
+        private AuthenticatorHelper mAuthHelper;
+        private DevicePolicyManager mDevicePolicyManager;
+
+        private static class HeaderViewHolder {
+            ImageView mIcon;
+            TextView mTitle;
+            TextView mSummary;
+            Switch mSwitch;
+            ImageButton mButton;
+            View mDivider;
+        }
+
+        private LayoutInflater mInflater;
+
+        static int getHeaderType(Header header) {
+            if (header.fragment == null && header.intent == null) {
+                return HEADER_TYPE_CATEGORY;
+            } else if (header.id == R.id.wifi_settings || header.id == R.id.bluetooth_settings) {
+                return HEADER_TYPE_SWITCH;
+            } else if (header.id == R.id.security_settings) {
+                return HEADER_TYPE_BUTTON;
+            } else {
+                return HEADER_TYPE_NORMAL;
+            }
+        }
+
+        @Override
+        public int getItemViewType(int position) {
+            Header header = getItem(position);
+            return getHeaderType(header);
+        }
+
+        @Override
+        public boolean areAllItemsEnabled() {
+            return false; // because of categories
+        }
+
+        @Override
+        public boolean isEnabled(int position) {
+            return getItemViewType(position) != HEADER_TYPE_CATEGORY;
+        }
+
+        @Override
+        public int getViewTypeCount() {
+            return HEADER_TYPE_COUNT;
+        }
+
+        @Override
+        public boolean hasStableIds() {
+            return true;
+        }
+
+        public HeaderAdapter(Context context, List<Header> objects,
+                AuthenticatorHelper authenticatorHelper, DevicePolicyManager dpm) {
+            super(context, 0, objects);
+
+            mAuthHelper = authenticatorHelper;
+            mInflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
+
+            // Temp Switches provided as placeholder until the adapter replaces these with actual
+            // Switches inflated from their layouts. Must be done before adapter is set in super
+            mWifiEnabler = new WifiEnabler(context, new Switch(context));
+            mBluetoothEnabler = new BluetoothEnabler(context, new Switch(context));
+            mDevicePolicyManager = dpm;
+        }
+
+        @Override
+        public View getView(int position, View convertView, ViewGroup parent) {
+            HeaderViewHolder holder;
+            Header header = getItem(position);
+            int headerType = getHeaderType(header);
+            View view = null;
+
+            if (convertView == null) {
+                holder = new HeaderViewHolder();
+                switch (headerType) {
+                    case HEADER_TYPE_CATEGORY:
+                        view = new TextView(getContext(), null,
+                                android.R.attr.listSeparatorTextViewStyle);
+                        holder.mTitle = (TextView) view;
+                        break;
+
+                    case HEADER_TYPE_SWITCH:
+                        view = mInflater.inflate(R.layout.preference_header_switch_item, parent,
+                                false);
+                        holder.mIcon = (ImageView) view.findViewById(R.id.icon);
+                        holder.mTitle = (TextView)
+                                view.findViewById(com.android.internal.R.id.title);
+                        holder.mSummary = (TextView)
+                                view.findViewById(com.android.internal.R.id.summary);
+                        holder.mSwitch = (Switch) view.findViewById(R.id.switchWidget);
+                        break;
+
+                    case HEADER_TYPE_BUTTON:
+                        view = mInflater.inflate(R.layout.preference_header_button_item, parent,
+                                false);
+                        holder.mIcon = (ImageView) view.findViewById(R.id.icon);
+                        holder.mTitle = (TextView)
+                                view.findViewById(com.android.internal.R.id.title);
+                        holder.mSummary = (TextView)
+                                view.findViewById(com.android.internal.R.id.summary);
+                        holder.mButton = (ImageButton) view.findViewById(R.id.buttonWidget);
+                        holder.mDivider = view.findViewById(R.id.divider);
+                        break;
+
+                    case HEADER_TYPE_NORMAL:
+                        view = mInflater.inflate(
+                                R.layout.preference_header_item, parent,
+                                false);
+                        holder.mIcon = (ImageView) view.findViewById(R.id.icon);
+                        holder.mTitle = (TextView)
+                                view.findViewById(com.android.internal.R.id.title);
+                        holder.mSummary = (TextView)
+                                view.findViewById(com.android.internal.R.id.summary);
+                        break;
+                }
+                view.setTag(holder);
+            } else {
+                view = convertView;
+                holder = (HeaderViewHolder) view.getTag();
+            }
+
+            // All view fields must be updated every time, because the view may be recycled
+            switch (headerType) {
+                case HEADER_TYPE_CATEGORY:
+                    holder.mTitle.setText(header.getTitle(getContext().getResources()));
+                    break;
+
+                case HEADER_TYPE_SWITCH:
+                    // Would need a different treatment if the main menu had more switches
+                    if (header.id == R.id.wifi_settings) {
+                        mWifiEnabler.setSwitch(holder.mSwitch);
+                    } else {
+                        mBluetoothEnabler.setSwitch(holder.mSwitch);
+                    }
+                    updateCommonHeaderView(header, holder);
+                    break;
+
+                case HEADER_TYPE_BUTTON:
+                    if (header.id == R.id.security_settings) {
+                        boolean hasCert = DevicePolicyManager.hasAnyCaCertsInstalled();
+                        if (hasCert) {
+                            holder.mButton.setVisibility(View.VISIBLE);
+                            holder.mDivider.setVisibility(View.VISIBLE);
+                            boolean isManaged = mDevicePolicyManager.getDeviceOwner() != null;
+                            if (isManaged) {
+                                holder.mButton.setImageResource(R.drawable.ic_settings_about);
+                            } else {
+                                holder.mButton.setImageResource(
+                                        android.R.drawable.stat_notify_error);
+                            }
+                            holder.mButton.setOnClickListener(new OnClickListener() {
+                                @Override
+                                public void onClick(View v) {
+                                    Intent intent = new Intent(
+                                            android.provider.Settings.ACTION_MONITORING_CERT_INFO);
+                                    getContext().startActivity(intent);
+                                }
+                            });
+                        } else {
+                            holder.mButton.setVisibility(View.GONE);
+                            holder.mDivider.setVisibility(View.GONE);
+                        }
+                    }
+                    updateCommonHeaderView(header, holder);
+                    break;
+
+                case HEADER_TYPE_NORMAL:
+                    updateCommonHeaderView(header, holder);
+                    break;
+            }
+
+            return view;
+        }
+
+        private void updateCommonHeaderView(Header header, HeaderViewHolder holder) {
+                if (header.extras != null
+                        && header.extras.containsKey(ManageAccountsSettings.KEY_ACCOUNT_TYPE)) {
+                    String accType = header.extras.getString(
+                            ManageAccountsSettings.KEY_ACCOUNT_TYPE);
+                    Drawable icon = mAuthHelper.getDrawableForType(getContext(), accType);
+                    setHeaderIcon(holder, icon);
+                } else {
+                    holder.mIcon.setImageResource(header.iconRes);
+                }
+                holder.mTitle.setText(header.getTitle(getContext().getResources()));
+                CharSequence summary = header.getSummary(getContext().getResources());
+                if (!TextUtils.isEmpty(summary)) {
+                    holder.mSummary.setVisibility(View.VISIBLE);
+                    holder.mSummary.setText(summary);
+                } else {
+                    holder.mSummary.setVisibility(View.GONE);
+                }
+            }
+
+        private void setHeaderIcon(HeaderViewHolder holder, Drawable icon) {
+            ViewGroup.LayoutParams lp = holder.mIcon.getLayoutParams();
+            lp.width = getContext().getResources().getDimensionPixelSize(
+                    R.dimen.header_icon_width);
+            lp.height = lp.width;
+            holder.mIcon.setLayoutParams(lp);
+            holder.mIcon.setImageDrawable(icon);
+        }
+
+        public void resume() {
+            mWifiEnabler.resume();
+            mBluetoothEnabler.resume();
+        }
+
+        public void pause() {
+            mWifiEnabler.pause();
+            mBluetoothEnabler.pause();
+        }
+    }
+
+    private void onListItemClick(ListView l, View v, int position, long id) {
+        if (!isResumed()) {
+            return;
+        }
+        Object item = mHeaderAdapter.getItem(position);
+        if (item instanceof Header) {
+            mCurrentHeader = (Header) item;
+        }
+    }
+
+    /**
+     * Called when the user selects an item in the header list.  The default
+     * implementation will call either
+     * {@link #startWithFragment(String, Bundle, Fragment, int, int, int)}
+     * or {@link #switchToHeader(com.android.settings.SettingsActivity.Header, boolean)}
+     * as appropriate.
+     *
+     * @param header The header that was selected.
+     */
+    private void onHeaderClick(Header header) {
+        if (header == null) return;
+        if (header.fragment != null) {
+            switchToHeader(header, false);
+        } else if (header.intent != null) {
+            startActivity(header.intent);
+        }
+    }
+
+    @Override
+    public boolean shouldUpRecreateTask(Intent targetIntent) {
+        return super.shouldUpRecreateTask(new Intent(this, SettingsActivity.class));
+    }
+
+    @Override
+    public void onAccountsUpdated(Account[] accounts) {
+        // TODO: watch for package upgrades to invalidate cache; see 7206643
+        mAuthenticatorHelper.updateAuthDescriptions(this);
+        mAuthenticatorHelper.onAccountsUpdated(this, accounts);
+        invalidateHeaders();
+    }
+
+    public static void requestHomeNotice() {
+        sShowNoHomeNotice = true;
+    }
+
+    /**
+     * Default value for {@link Header#id Header.id} indicating that no
+     * identifier value is set.  All other values (including those below -1)
+     * are valid.
+     */
+    private static final long HEADER_ID_UNDEFINED = -1;
+
+    /**
+     * Description of a single Header item that the user can select.
+     */
+    static final class Header implements Parcelable {
+        /**
+         * Identifier for this header, to correlate with a new list when
+         * it is updated.  The default value is
+         * {@link SettingsActivity#HEADER_ID_UNDEFINED}, meaning no id.
+         * @attr ref android.R.styleable#PreferenceHeader_id
+         */
+        public long id = HEADER_ID_UNDEFINED;
+
+        /**
+         * Resource ID of title of the header that is shown to the user.
+         * @attr ref android.R.styleable#PreferenceHeader_title
+         */
+        public int titleRes;
+
+        /**
+         * Title of the header that is shown to the user.
+         * @attr ref android.R.styleable#PreferenceHeader_title
+         */
+        public CharSequence title;
+
+        /**
+         * Resource ID of optional summary describing what this header controls.
+         * @attr ref android.R.styleable#PreferenceHeader_summary
+         */
+        public int summaryRes;
+
+        /**
+         * Optional summary describing what this header controls.
+         * @attr ref android.R.styleable#PreferenceHeader_summary
+         */
+        public CharSequence summary;
+
+        /**
+         * Optional icon resource to show for this header.
+         * @attr ref android.R.styleable#PreferenceHeader_icon
+         */
+        public int iconRes;
+
+        /**
+         * Full class name of the fragment to display when this header is
+         * selected.
+         * @attr ref android.R.styleable#PreferenceHeader_fragment
+         */
+        public String fragment;
+
+        /**
+         * Optional arguments to supply to the fragment when it is
+         * instantiated.
+         */
+        public Bundle fragmentArguments;
+
+        /**
+         * Intent to launch when the preference is selected.
+         */
+        public Intent intent;
+
+        /**
+         * Optional additional data for use by subclasses of the activity
+         */
+        public Bundle extras;
+
+        public Header() {
+            // Empty
+        }
+
+        /**
+         * Return the currently set title.  If {@link #titleRes} is set,
+         * this resource is loaded from <var>res</var> and returned.  Otherwise
+         * {@link #title} is returned.
+         */
+        public CharSequence getTitle(Resources res) {
+            if (titleRes != 0) {
+                return res.getText(titleRes);
+            }
+            return title;
+        }
+
+        /**
+         * Return the currently set summary.  If {@link #summaryRes} is set,
+         * this resource is loaded from <var>res</var> and returned.  Otherwise
+         * {@link #summary} is returned.
+         */
+        public CharSequence getSummary(Resources res) {
+            if (summaryRes != 0) {
+                return res.getText(summaryRes);
+            }
+            return summary;
+        }
+
+        @Override
+        public int describeContents() {
+            return 0;
+        }
+
+        @Override
+        public void writeToParcel(Parcel dest, int flags) {
+            dest.writeLong(id);
+            dest.writeInt(titleRes);
+            TextUtils.writeToParcel(title, dest, flags);
+            dest.writeInt(summaryRes);
+            TextUtils.writeToParcel(summary, dest, flags);
+            dest.writeInt(iconRes);
+            dest.writeString(fragment);
+            dest.writeBundle(fragmentArguments);
+            if (intent != null) {
+                dest.writeInt(1);
+                intent.writeToParcel(dest, flags);
+            } else {
+                dest.writeInt(0);
+            }
+            dest.writeBundle(extras);
+        }
+
+        public void readFromParcel(Parcel in) {
+            id = in.readLong();
+            titleRes = in.readInt();
+            title = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
+            summaryRes = in.readInt();
+            summary = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
+            iconRes = in.readInt();
+            fragment = in.readString();
+            fragmentArguments = in.readBundle();
+            if (in.readInt() != 0) {
+                intent = Intent.CREATOR.createFromParcel(in);
+            }
+            extras = in.readBundle();
+        }
+
+        Header(Parcel in) {
+            readFromParcel(in);
+        }
+
+        public static final Creator<Header> CREATOR = new Creator<Header>() {
+            public Header createFromParcel(Parcel source) {
+                return new Header(source);
+            }
+            public Header[] newArray(int size) {
+                return new Header[size];
+            }
+        };
+    }
+}
diff --git a/src/com/android/settings/SettingsPreferenceFragment.java b/src/com/android/settings/SettingsPreferenceFragment.java
index 0a382b5..d91c11b 100644
--- a/src/com/android/settings/SettingsPreferenceFragment.java
+++ b/src/com/android/settings/SettingsPreferenceFragment.java
@@ -22,12 +22,9 @@ import android.app.Fragment;
 import android.content.ContentResolver;
 import android.content.Context;
 import android.content.DialogInterface;
-import android.content.Intent;
 import android.content.pm.PackageManager;
-import android.net.Uri;
 import android.os.Bundle;
 import android.preference.Preference;
-import android.preference.PreferenceActivity;
 import android.preference.PreferenceFragment;
 import android.text.TextUtils;
 import android.util.Log;
@@ -305,13 +302,13 @@ public class SettingsPreferenceFragment extends PreferenceFragment implements Di
 
     public boolean startFragment(
             Fragment caller, String fragmentClass, int requestCode, Bundle extras) {
-        if (getActivity() instanceof PreferenceActivity) {
-            PreferenceActivity preferenceActivity = (PreferenceActivity)getActivity();
-            preferenceActivity.startPreferencePanel(fragmentClass, extras,
+        if (getActivity() instanceof SettingsActivity) {
+            SettingsActivity sa = (SettingsActivity) getActivity();
+            sa.startPreferencePanel(fragmentClass, extras,
                     R.string.lock_settings_picker_title, null, caller, requestCode);
             return true;
         } else {
-            Log.w(TAG, "Parent isn't PreferenceActivity, thus there's no way to launch the "
+            Log.w(TAG, "Parent isn't Settings activity, thus there's no way to launch the "
                     + "given Fragment (name: " + fragmentClass + ", requestCode: " + requestCode
                     + ")");
             return false;
diff --git a/src/com/android/settings/SubSettings.java b/src/com/android/settings/SubSettings.java
index bcc56e1..04955b2 100644
--- a/src/com/android/settings/SubSettings.java
+++ b/src/com/android/settings/SubSettings.java
@@ -22,7 +22,7 @@ import android.util.Log;
  * Stub class for showing sub-settings; we can't use the main Settings class
  * since for our app it is a special singleTask class.
  */
-public class SubSettings extends Settings {
+public class SubSettings extends SettingsActivity {
 
     @Override
     public boolean onNavigateUp() {
diff --git a/src/com/android/settings/TestingSettings.java b/src/com/android/settings/TestingSettings.java
index 3994560..2eadd84 100644
--- a/src/com/android/settings/TestingSettings.java
+++ b/src/com/android/settings/TestingSettings.java
@@ -17,15 +17,13 @@
 package com.android.settings;
 
 import android.os.Bundle;
-import android.preference.PreferenceActivity;
 
-public class TestingSettings extends PreferenceActivity {
+public class TestingSettings extends SettingsPreferenceFragment {
 
     @Override
-    protected void onCreate(Bundle savedInstanceState) {
+    public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         
         addPreferencesFromResource(R.xml.testing_settings);
     }
-
 }
diff --git a/src/com/android/settings/UserDictionarySettings.java b/src/com/android/settings/UserDictionarySettings.java
index da12004..1e9fd0a 100644
--- a/src/com/android/settings/UserDictionarySettings.java
+++ b/src/com/android/settings/UserDictionarySettings.java
@@ -192,9 +192,8 @@ public class UserDictionarySettings extends ListFragment {
         args.putString(UserDictionaryAddWordContents.EXTRA_WORD, editingWord);
         args.putString(UserDictionaryAddWordContents.EXTRA_SHORTCUT, editingShortcut);
         args.putString(UserDictionaryAddWordContents.EXTRA_LOCALE, mLocale);
-        android.preference.PreferenceActivity pa =
-                (android.preference.PreferenceActivity)getActivity();
-        pa.startPreferencePanel(
+        SettingsActivity sa = (SettingsActivity) getActivity();
+        sa.startPreferencePanel(
                 com.android.settings.inputmethod.UserDictionaryAddWordFragment.class.getName(),
                 args, R.string.user_dict_settings_add_dialog_title, null, null, 0);
     }
diff --git a/src/com/android/settings/Utils.java b/src/com/android/settings/Utils.java
index c676ee8..bf44835 100644
--- a/src/com/android/settings/Utils.java
+++ b/src/com/android/settings/Utils.java
@@ -42,7 +42,6 @@ import android.os.Bundle;
 import android.os.UserHandle;
 import android.os.UserManager;
 import android.preference.Preference;
-import android.preference.PreferenceActivity.Header;
 import android.preference.PreferenceFrameLayout;
 import android.preference.PreferenceGroup;
 import android.provider.ContactsContract.CommonDataKinds;
@@ -238,7 +237,7 @@ public class Utils {
     }
 
     public static boolean updateHeaderToSpecificActivityFromMetaDataOrRemove(Context context,
-            List<Header> target, Header header) {
+            List<SettingsActivity.Header> target, SettingsActivity.Header header) {
 
         Intent intent = header.intent;
         if (intent != null) {
diff --git a/src/com/android/settings/WirelessSettings.java b/src/com/android/settings/WirelessSettings.java
index ae8fdcf..59074e5 100644
--- a/src/com/android/settings/WirelessSettings.java
+++ b/src/com/android/settings/WirelessSettings.java
@@ -92,7 +92,7 @@ public class WirelessSettings extends RestrictedSettingsFragment
     }
     /**
      * Invoked on each preference click in this hierarchy, overrides
-     * PreferenceActivity's implementation.  Used to make sure we track the
+     * PreferenceFragment's implementation.  Used to make sure we track the
      * preference click events.
      */
     @Override
diff --git a/src/com/android/settings/accessibility/ToggleFeaturePreferenceFragment.java b/src/com/android/settings/accessibility/ToggleFeaturePreferenceFragment.java
index 482ea70..d56e37c 100644
--- a/src/com/android/settings/accessibility/ToggleFeaturePreferenceFragment.java
+++ b/src/com/android/settings/accessibility/ToggleFeaturePreferenceFragment.java
@@ -23,7 +23,6 @@ import android.graphics.Color;
 import android.graphics.drawable.ColorDrawable;
 import android.os.Bundle;
 import android.preference.Preference;
-import android.preference.PreferenceActivity;
 import android.preference.PreferenceScreen;
 import android.view.Gravity;
 import android.view.Menu;
@@ -35,6 +34,7 @@ import android.view.accessibility.AccessibilityManager;
 import android.widget.TextView;
 
 import com.android.settings.R;
+import com.android.settings.SettingsActivity;
 import com.android.settings.SettingsPreferenceFragment;
 
 public abstract class ToggleFeaturePreferenceFragment
@@ -126,8 +126,8 @@ public abstract class ToggleFeaturePreferenceFragment
     }
 
     public void setTitle(String title) {
-        final PreferenceActivity activity = (PreferenceActivity) getActivity();
-        if (!activity.onIsMultiPane() || activity.onIsHidingHeaders()) {
+        final SettingsActivity activity = (SettingsActivity) getActivity();
+        if (!activity.onIsHidingHeaders()) {
             getActivity().setTitle(title);
         }
     }
diff --git a/src/com/android/settings/accounts/AccountPreferenceBase.java b/src/com/android/settings/accounts/AccountPreferenceBase.java
index 2759a8f..f533263 100644
--- a/src/com/android/settings/accounts/AccountPreferenceBase.java
+++ b/src/com/android/settings/accounts/AccountPreferenceBase.java
@@ -38,7 +38,6 @@ import android.content.res.Resources;
 import android.graphics.drawable.Drawable;
 import android.os.Bundle;
 import android.os.Handler;
-import android.preference.PreferenceActivity;
 import android.preference.PreferenceScreen;
 import android.text.format.DateFormat;
 import android.util.Log;
diff --git a/src/com/android/settings/accounts/AddAccountSettings.java b/src/com/android/settings/accounts/AddAccountSettings.java
index 39906eb..3f98e59 100644
--- a/src/com/android/settings/accounts/AddAccountSettings.java
+++ b/src/com/android/settings/accounts/AddAccountSettings.java
@@ -31,6 +31,7 @@ import android.util.Log;
 import android.widget.Toast;
 
 import com.android.settings.R;
+import com.android.settings.Settings;
 import com.android.settings.Utils;
 
 import java.io.IOException;
@@ -142,7 +143,7 @@ public class AddAccountSettings extends Activity {
                 getIntent().getStringArrayExtra(AccountPreferenceBase.AUTHORITIES_FILTER_KEY);
         final String[] accountTypes =
                 getIntent().getStringArrayExtra(AccountPreferenceBase.ACCOUNT_TYPES_FILTER_KEY);
-        final Intent intent = new Intent(this, ChooseAccountActivity.class);
+        final Intent intent = new Intent(this, Settings.ChooseAccountActivity.class);
         if (authorities != null) {
             intent.putExtra(AccountPreferenceBase.AUTHORITIES_FILTER_KEY, authorities);
         }
diff --git a/src/com/android/settings/accounts/ChooseAccountActivity.java b/src/com/android/settings/accounts/ChooseAccountFragment.java
index 631fe47..292c3dd 100644
--- a/src/com/android/settings/accounts/ChooseAccountActivity.java
+++ b/src/com/android/settings/accounts/ChooseAccountFragment.java
@@ -18,6 +18,7 @@ package com.android.settings.accounts;
 
 import android.accounts.AccountManager;
 import android.accounts.AuthenticatorDescription;
+import android.app.Activity;
 import android.content.ContentResolver;
 import android.content.Context;
 import android.content.Intent;
@@ -27,12 +28,12 @@ import android.content.res.Resources;
 import android.graphics.drawable.Drawable;
 import android.os.Bundle;
 import android.preference.Preference;
-import android.preference.PreferenceActivity;
 import android.preference.PreferenceGroup;
 import android.preference.PreferenceScreen;
 import android.util.Log;
 import com.android.internal.util.CharSequences;
 import com.android.settings.R;
+import com.android.settings.SettingsPreferenceFragment;
 import com.google.android.collect.Maps;
 
 import java.util.ArrayList;
@@ -44,9 +45,9 @@ import java.util.Map;
 /**
  * Activity asking a user to select an account to be set up.
  */
-public class ChooseAccountActivity extends PreferenceActivity {
+public class ChooseAccountFragment extends SettingsPreferenceFragment {
 
-    private static final String TAG = "ChooseAccountActivity";
+    private static final String TAG = "ChooseAccountFragment";
     private String[] mAuthorities;
     private PreferenceGroup mAddAccountGroup;
     private final ArrayList<ProviderEntry> mProviderList = new ArrayList<ProviderEntry>();
@@ -76,14 +77,13 @@ public class ChooseAccountActivity extends PreferenceActivity {
     }
 
     @Override
-    protected void onCreate(Bundle icicle) {
+    public void onCreate(Bundle icicle) {
         super.onCreate(icicle);
 
-        setContentView(R.layout.add_account_screen);
         addPreferencesFromResource(R.xml.add_account_settings);
-        mAuthorities = getIntent().getStringArrayExtra(
+        mAuthorities = getActivity().getIntent().getStringArrayExtra(
                 AccountPreferenceBase.AUTHORITIES_FILTER_KEY);
-        String[] accountTypesFilter = getIntent().getStringArrayExtra(
+        String[] accountTypesFilter = getActivity().getIntent().getStringArrayExtra(
                 AccountPreferenceBase.ACCOUNT_TYPES_FILTER_KEY);
         if (accountTypesFilter != null) {
             mAccountTypesFilter = new HashSet<String>();
@@ -100,7 +100,7 @@ public class ChooseAccountActivity extends PreferenceActivity {
      * and update any UI that depends on AuthenticatorDescriptions in onAuthDescriptionsUpdated().
      */
     private void updateAuthDescriptions() {
-        mAuthDescs = AccountManager.get(this).getAuthenticatorTypes();
+        mAuthDescs = AccountManager.get(getActivity()).getAuthenticatorTypes();
         for (int i = 0; i < mAuthDescs.length; i++) {
             mTypeToAuthDescription.put(mAuthDescs[i].type, mAuthDescs[i]);
         }
@@ -148,7 +148,7 @@ public class ChooseAccountActivity extends PreferenceActivity {
             for (ProviderEntry pref : mProviderList) {
                 Drawable drawable = getDrawableForType(pref.type);
                 ProviderPreference p =
-                        new ProviderPreference(this, pref.type, drawable, pref.name);
+                        new ProviderPreference(getActivity(), pref.type, drawable, pref.name);
                 mAddAccountGroup.addPreference(p);
             }
         } else {
@@ -160,7 +160,7 @@ public class ChooseAccountActivity extends PreferenceActivity {
                 }
                 Log.v(TAG, "No providers found for authorities: " + auths);
             }
-            setResult(RESULT_CANCELED);
+            getActivity().setResult(Activity.RESULT_CANCELED);
             finish();
         }
     }
@@ -196,7 +196,7 @@ public class ChooseAccountActivity extends PreferenceActivity {
         if (mTypeToAuthDescription.containsKey(accountType)) {
             try {
                 AuthenticatorDescription desc = mTypeToAuthDescription.get(accountType);
-                Context authContext = createPackageContext(desc.packageName, 0);
+                Context authContext = getActivity().createPackageContext(desc.packageName, 0);
                 icon = authContext.getResources().getDrawable(desc.iconId);
             } catch (PackageManager.NameNotFoundException e) {
                 // TODO: place holder icon for missing account icons?
@@ -219,7 +219,7 @@ public class ChooseAccountActivity extends PreferenceActivity {
         if (mTypeToAuthDescription.containsKey(accountType)) {
             try {
                 AuthenticatorDescription desc = mTypeToAuthDescription.get(accountType);
-                Context authContext = createPackageContext(desc.packageName, 0);
+                Context authContext = getActivity().createPackageContext(desc.packageName, 0);
                 label = authContext.getResources().getText(desc.labelId);
             } catch (PackageManager.NameNotFoundException e) {
                 Log.w(TAG, "No label name for account type " + accountType);
@@ -245,7 +245,7 @@ public class ChooseAccountActivity extends PreferenceActivity {
     private void finishWithAccountType(String accountType) {
         Intent intent = new Intent();
         intent.putExtra(AddAccountSettings.EXTRA_SELECTED_ACCOUNT, accountType);
-        setResult(RESULT_OK, intent);
+        getActivity().setResult(Activity.RESULT_OK, intent);
         finish();
     }
 }
diff --git a/src/com/android/settings/accounts/ManageAccountsSettings.java b/src/com/android/settings/accounts/ManageAccountsSettings.java
index 184f680..b5a6579 100644
--- a/src/com/android/settings/accounts/ManageAccountsSettings.java
+++ b/src/com/android/settings/accounts/ManageAccountsSettings.java
@@ -31,7 +31,6 @@ import android.content.pm.ResolveInfo;
 import android.graphics.drawable.Drawable;
 import android.os.Bundle;
 import android.preference.Preference;
-import android.preference.PreferenceActivity;
 import android.preference.PreferenceScreen;
 import android.util.Log;
 import android.view.LayoutInflater;
@@ -45,6 +44,7 @@ import android.widget.TextView;
 
 import com.android.settings.AccountPreference;
 import com.android.settings.R;
+import com.android.settings.SettingsActivity;
 import com.android.settings.Utils;
 import com.android.settings.location.LocationSettings;
 
@@ -146,7 +146,7 @@ public class ManageAccountsSettings extends AccountPreferenceBase
     private void startAccountSettings(AccountPreference acctPref) {
         Bundle args = new Bundle();
         args.putParcelable(AccountSyncSettings.ACCOUNT_KEY, acctPref.getAccount());
-        ((PreferenceActivity) getActivity()).startPreferencePanel(
+        ((SettingsActivity) getActivity()).startPreferencePanel(
                 AccountSyncSettings.class.getCanonicalName(), args,
                 R.string.account_sync_settings_title, acctPref.getAccount().name,
                 this, REQUEST_SHOW_SYNC_SETTINGS);
@@ -368,7 +368,7 @@ public class ManageAccountsSettings extends AccountPreferenceBase
 
         @Override
         public boolean onPreferenceClick(Preference preference) {
-            ((PreferenceActivity) getActivity()).startPreferencePanel(
+            ((SettingsActivity) getActivity()).startPreferencePanel(
                     mClass, null, mTitleRes, null, null, 0);
             // Hack: announce that the Google account preferences page is launching the location
             // settings
diff --git a/src/com/android/settings/accounts/SyncSettingsActivity.java b/src/com/android/settings/accounts/SyncSettingsActivity.java
index 96f16d6..bbd9f91 100644
--- a/src/com/android/settings/accounts/SyncSettingsActivity.java
+++ b/src/com/android/settings/accounts/SyncSettingsActivity.java
@@ -16,22 +16,20 @@
 
 package com.android.settings.accounts;
 
-import android.app.Fragment;
 import android.content.Intent;
-import android.preference.PreferenceActivity;
 
-import com.android.settings.ChooseLockGeneric.ChooseLockGenericFragment;
+import com.android.settings.SettingsActivity;
 
 /**
  * Launcher activity for the SyncSettings fragment.
  *
  */
-public class SyncSettingsActivity extends PreferenceActivity {
+public class SyncSettingsActivity extends SettingsActivity {
     @Override
     public Intent getIntent() {
-        Intent modIntent = new Intent(super.getIntent());
-        modIntent.putExtra(EXTRA_SHOW_FRAGMENT, SyncSettings.class.getName());
-        modIntent.putExtra(EXTRA_NO_HEADERS, true);
+        Intent modIntent = new Intent(getIntent());
+        modIntent.putExtra(SettingsActivity.EXTRA_SHOW_FRAGMENT, SyncSettings.class.getName());
+        modIntent.putExtra(SettingsActivity.EXTRA_NO_HEADERS, true);
         return modIntent;
     }
 
diff --git a/src/com/android/settings/applications/AppOpsCategory.java b/src/com/android/settings/applications/AppOpsCategory.java
index 125a43b..03ebb9e 100644
--- a/src/com/android/settings/applications/AppOpsCategory.java
+++ b/src/com/android/settings/applications/AppOpsCategory.java
@@ -28,7 +28,6 @@ import android.content.pm.ActivityInfo;
 import android.content.res.Configuration;
 import android.content.res.Resources;
 import android.os.Bundle;
-import android.preference.PreferenceActivity;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
@@ -40,6 +39,7 @@ import android.widget.TextView;
 import java.util.List;
 
 import com.android.settings.R;
+import com.android.settings.SettingsActivity;
 import com.android.settings.applications.AppOpsState.AppOpEntry;
 
 public class AppOpsCategory extends ListFragment implements
@@ -333,8 +333,8 @@ public class AppOpsCategory extends ListFragment implements
         Bundle args = new Bundle();
         args.putString(AppOpsDetails.ARG_PACKAGE_NAME, mCurrentPkgName);
 
-        PreferenceActivity pa = (PreferenceActivity)getActivity();
-        pa.startPreferencePanel(AppOpsDetails.class.getName(), args,
+        SettingsActivity sa = (SettingsActivity) getActivity();
+        sa.startPreferencePanel(AppOpsDetails.class.getName(), args,
                 R.string.app_ops_settings, null, this, RESULT_APP_DETAILS);
     }
     
diff --git a/src/com/android/settings/applications/AppOpsDetails.java b/src/com/android/settings/applications/AppOpsDetails.java
index 1e2ac7d..d9dec19 100644
--- a/src/com/android/settings/applications/AppOpsDetails.java
+++ b/src/com/android/settings/applications/AppOpsDetails.java
@@ -28,7 +28,6 @@ import android.content.pm.PermissionGroupInfo;
 import android.content.pm.PermissionInfo;
 import android.content.res.Resources;
 import android.os.Bundle;
-import android.preference.PreferenceActivity;
 import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -40,6 +39,7 @@ import android.widget.Switch;
 import android.widget.TextView;
 
 import com.android.settings.R;
+import com.android.settings.SettingsActivity;
 import com.android.settings.Utils;
 
 import java.util.List;
@@ -161,8 +161,8 @@ public class AppOpsDetails extends Fragment {
     private void setIntentAndFinish(boolean finish, boolean appChanged) {
         Intent intent = new Intent();
         intent.putExtra(ManageApplications.APP_CHG, appChanged);
-        PreferenceActivity pa = (PreferenceActivity)getActivity();
-        pa.finishPreferencePanel(this, Activity.RESULT_OK, intent);
+        SettingsActivity sa = (SettingsActivity)getActivity();
+        sa.finishPreferencePanel(this, Activity.RESULT_OK, intent);
     }
 
     /** Called when the activity is first created. */
diff --git a/src/com/android/settings/applications/InstalledAppDetails.java b/src/com/android/settings/applications/InstalledAppDetails.java
index 1b3938c..722f569 100644
--- a/src/com/android/settings/applications/InstalledAppDetails.java
+++ b/src/com/android/settings/applications/InstalledAppDetails.java
@@ -19,6 +19,7 @@ package com.android.settings.applications;
 import com.android.internal.telephony.ISms;
 import com.android.internal.telephony.SmsUsageMonitor;
 import com.android.settings.R;
+import com.android.settings.SettingsActivity;
 import com.android.settings.Utils;
 import com.android.settings.applications.ApplicationsState.AppEntry;
 
@@ -57,7 +58,6 @@ import android.os.RemoteException;
 import android.os.ServiceManager;
 import android.os.UserHandle;
 import android.os.UserManager;
-import android.preference.PreferenceActivity;
 import android.text.SpannableString;
 import android.text.TextUtils;
 import android.text.format.Formatter;
@@ -920,8 +920,8 @@ public class InstalledAppDetails extends Fragment
         if(localLOGV) Log.i(TAG, "appChanged="+appChanged);
         Intent intent = new Intent();
         intent.putExtra(ManageApplications.APP_CHG, appChanged);
-        PreferenceActivity pa = (PreferenceActivity)getActivity();
-        pa.finishPreferencePanel(this, Activity.RESULT_OK, intent);
+        SettingsActivity sa = (SettingsActivity)getActivity();
+        sa.finishPreferencePanel(this, Activity.RESULT_OK, intent);
     }
     
     private void refreshSizeInfo() {
diff --git a/src/com/android/settings/applications/InstalledAppDetailsTop.java b/src/com/android/settings/applications/InstalledAppDetailsTop.java
index 44a88fb..e731c1c 100644
--- a/src/com/android/settings/applications/InstalledAppDetailsTop.java
+++ b/src/com/android/settings/applications/InstalledAppDetailsTop.java
@@ -1,12 +1,25 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package com.android.settings.applications;
 
-import android.app.Fragment;
 import android.content.Intent;
-import android.preference.PreferenceActivity;
-
-import com.android.settings.ChooseLockGeneric.ChooseLockGenericFragment;
+import com.android.settings.SettingsActivity;
 
-public class InstalledAppDetailsTop extends PreferenceActivity {
+public class InstalledAppDetailsTop extends SettingsActivity {
 
     @Override
     public Intent getIntent() {
@@ -21,5 +34,4 @@ public class InstalledAppDetailsTop extends PreferenceActivity {
         if (InstalledAppDetails.class.getName().equals(fragmentName)) return true;
         return false;
     }
-
 }
diff --git a/src/com/android/settings/applications/ManageApplications.java b/src/com/android/settings/applications/ManageApplications.java
index 0a1dcb1..5a11e6e 100644
--- a/src/com/android/settings/applications/ManageApplications.java
+++ b/src/com/android/settings/applications/ManageApplications.java
@@ -29,7 +29,6 @@ import android.content.ComponentName;
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
-import android.content.IntentFilter;
 import android.content.ServiceConnection;
 import android.content.pm.ApplicationInfo;
 import android.content.pm.IPackageManager;
@@ -44,9 +43,7 @@ import android.os.IBinder;
 import android.os.RemoteException;
 import android.os.ServiceManager;
 import android.os.UserHandle;
-import android.preference.PreferenceActivity;
 import android.preference.PreferenceFrameLayout;
-import android.provider.Settings;
 import android.support.v4.view.PagerAdapter;
 import android.support.v4.view.PagerTabStrip;
 import android.support.v4.view.ViewPager;
@@ -72,6 +69,7 @@ import android.widget.TextView;
 import com.android.internal.app.IMediaContainerService;
 import com.android.internal.content.PackageHelper;
 import com.android.settings.R;
+import com.android.settings.SettingsActivity;
 import com.android.settings.Settings.RunningServicesActivity;
 import com.android.settings.Settings.StorageUseActivity;
 import com.android.settings.applications.ApplicationsState.AppEntry;
@@ -844,7 +842,7 @@ public class ManageApplications extends Fragment implements
                 || className.endsWith(".StorageUse")) {
             mSortOrder = SORT_ORDER_SIZE;
             defaultListType = LIST_TYPE_ALL;
-        } else if (Settings.ACTION_MANAGE_ALL_APPLICATIONS_SETTINGS.equals(action)) {
+        } else if (android.provider.Settings.ACTION_MANAGE_ALL_APPLICATIONS_SETTINGS.equals(action)) {
             // Select the all-apps list, with the default sorting
             defaultListType = LIST_TYPE_ALL;
         }
@@ -1026,8 +1024,8 @@ public class ManageApplications extends Fragment implements
         Bundle args = new Bundle();
         args.putString(InstalledAppDetails.ARG_PACKAGE_NAME, mCurrentPkgName);
 
-        PreferenceActivity pa = (PreferenceActivity)getActivity();
-        pa.startPreferencePanel(InstalledAppDetails.class.getName(), args,
+        SettingsActivity sa = (SettingsActivity) getActivity();
+        sa.startPreferencePanel(InstalledAppDetails.class.getName(), args,
                 R.string.application_info_label, null, this, INSTALLED_APP_DETAILS);
     }
     
diff --git a/src/com/android/settings/applications/ProcessStatsDetail.java b/src/com/android/settings/applications/ProcessStatsDetail.java
index 326ca7b..5d0660a 100644
--- a/src/com/android/settings/applications/ProcessStatsDetail.java
+++ b/src/com/android/settings/applications/ProcessStatsDetail.java
@@ -30,7 +30,6 @@ import android.net.Uri;
 import android.os.Bundle;
 import android.os.Process;
 import android.os.UserHandle;
-import android.preference.PreferenceActivity;
 import android.text.format.Formatter;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -161,7 +160,6 @@ public class ProcessStatsDetail extends Fragment implements Button.OnClickListen
     }
 
     private void doAction(int action) {
-        PreferenceActivity pa = (PreferenceActivity)getActivity();
         switch (action) {
             case ACTION_FORCE_STOP:
                 killProcesses();
diff --git a/src/com/android/settings/applications/ProcessStatsUi.java b/src/com/android/settings/applications/ProcessStatsUi.java
index 3180221..9deb22d 100644
--- a/src/com/android/settings/applications/ProcessStatsUi.java
+++ b/src/com/android/settings/applications/ProcessStatsUi.java
@@ -25,7 +25,6 @@ import android.os.ServiceManager;
 import android.os.SystemClock;
 import android.os.UserManager;
 import android.preference.Preference;
-import android.preference.PreferenceActivity;
 import android.preference.PreferenceFragment;
 import android.preference.PreferenceGroup;
 import android.preference.PreferenceScreen;
@@ -40,6 +39,7 @@ import com.android.internal.app.IProcessStats;
 import com.android.internal.app.ProcessMap;
 import com.android.internal.app.ProcessStats;
 import com.android.settings.R;
+import com.android.settings.SettingsActivity;
 import com.android.settings.fuelgauge.Utils;
 
 import java.io.IOException;
@@ -192,7 +192,7 @@ public class ProcessStatsUi extends PreferenceFragment
         args.putBoolean(ProcessStatsDetail.EXTRA_USE_USS, mUseUss);
         args.putLong(ProcessStatsDetail.EXTRA_MAX_WEIGHT, mMaxWeight);
         args.putLong(ProcessStatsDetail.EXTRA_TOTAL_TIME, mTotalTime);
-        ((PreferenceActivity) getActivity()).startPreferencePanel(
+        ((SettingsActivity) getActivity()).startPreferencePanel(
                 ProcessStatsDetail.class.getName(), args, R.string.details_title, null, null, 0);
 
         return super.onPreferenceTreeClick(preferenceScreen, preference);
diff --git a/src/com/android/settings/applications/RunningProcessesView.java b/src/com/android/settings/applications/RunningProcessesView.java
index 8eb0496..caa5450 100644
--- a/src/com/android/settings/applications/RunningProcessesView.java
+++ b/src/com/android/settings/applications/RunningProcessesView.java
@@ -28,7 +28,6 @@ import android.content.pm.PackageManager;
 import android.os.Bundle;
 import android.os.SystemClock;
 import android.os.UserHandle;
-import android.preference.PreferenceActivity;
 import android.text.format.DateUtils;
 import android.text.format.Formatter;
 import android.util.AttributeSet;
@@ -42,6 +41,7 @@ import android.widget.ImageView;
 import android.widget.ListView;
 import android.widget.TextView;
 import android.widget.AbsListView.RecyclerListener;
+import com.android.settings.SettingsActivity;
 
 import java.util.ArrayList;
 import java.util.Collections;
@@ -397,9 +397,9 @@ public class RunningProcessesView extends FrameLayout
             }
             args.putInt(RunningServiceDetails.KEY_USER_ID, mi.mUserId);
             args.putBoolean(RunningServiceDetails.KEY_BACKGROUND, mAdapter.mShowBackground);
-    
-            PreferenceActivity pa = (PreferenceActivity)mOwner.getActivity();
-            pa.startPreferencePanel(RunningServiceDetails.class.getName(), args,
+
+            SettingsActivity sa = (SettingsActivity) mOwner.getActivity();
+            sa.startPreferencePanel(RunningServiceDetails.class.getName(), args,
                     R.string.runningservicedetails_settings_title, null, null, 0);
         }
     }
diff --git a/src/com/android/settings/bluetooth/BluetoothSettings.java b/src/com/android/settings/bluetooth/BluetoothSettings.java
index 4cb36c8..14c6054 100755
--- a/src/com/android/settings/bluetooth/BluetoothSettings.java
+++ b/src/com/android/settings/bluetooth/BluetoothSettings.java
@@ -28,7 +28,6 @@ import android.content.Intent;
 import android.content.IntentFilter;
 import android.os.Bundle;
 import android.preference.Preference;
-import android.preference.PreferenceActivity;
 import android.preference.PreferenceCategory;
 import android.preference.PreferenceGroup;
 import android.preference.PreferenceScreen;
@@ -42,6 +41,7 @@ import android.widget.Switch;
 import android.widget.TextView;
 
 import com.android.settings.R;
+import com.android.settings.SettingsActivity;
 
 /**
  * BluetoothSettings is the Settings screen for Bluetooth configuration and
@@ -58,16 +58,16 @@ public final class BluetoothSettings extends DeviceListPreferenceFragment {
             "android.btopp.intent.action.OPEN_RECEIVED_FILES";
 
     private BluetoothEnabler mBluetoothEnabler;
-
     private BluetoothDiscoverableEnabler mDiscoverableEnabler;
 
     private PreferenceGroup mPairedDevicesCategory;
-
     private PreferenceGroup mAvailableDevicesCategory;
     private boolean mAvailableDevicesCategoryIsPresent;
+
     private boolean mActivityStarted;
 
     private TextView mEmptyView;
+    private Switch mSwitch;
 
     private final IntentFilter mIntentFilter;
 
@@ -103,32 +103,45 @@ public final class BluetoothSettings extends DeviceListPreferenceFragment {
 
         mEmptyView = (TextView) getView().findViewById(android.R.id.empty);
         getListView().setEmptyView(mEmptyView);
+
+        final Activity activity = getActivity();
+        final int padding = activity.getResources().getDimensionPixelSize(
+                R.dimen.action_bar_switch_padding);
+        mSwitch = new Switch(activity);
+        mSwitch.setPaddingRelative(0, 0, padding, 0);
+
+        mBluetoothEnabler = new BluetoothEnabler(activity, mSwitch);
     }
 
     @Override
-    void addPreferencesForActivity() {
-        addPreferencesFromResource(R.xml.bluetooth_settings);
+    public void onStart() {
+        super.onStart();
+
+        final SettingsActivity activity = (SettingsActivity) getActivity();
+
+        if (!activity.onIsHidingHeaders()) {
+            activity.getActionBar().setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM,
+                    ActionBar.DISPLAY_SHOW_CUSTOM);
+            activity.getActionBar().setCustomView(mSwitch, new ActionBar.LayoutParams(
+                    ActionBar.LayoutParams.WRAP_CONTENT,
+                    ActionBar.LayoutParams.WRAP_CONTENT,
+                    Gravity.CENTER_VERTICAL | Gravity.END));
+        }
+    }
 
-        Activity activity = getActivity();
-
-        Switch actionBarSwitch = new Switch(activity);
-
-        if (activity instanceof PreferenceActivity) {
-            PreferenceActivity preferenceActivity = (PreferenceActivity) activity;
-            if (preferenceActivity.onIsHidingHeaders() || !preferenceActivity.onIsMultiPane()) {
-                final int padding = activity.getResources().getDimensionPixelSize(
-                        R.dimen.action_bar_switch_padding);
-                actionBarSwitch.setPaddingRelative(0, 0, padding, 0);
-                activity.getActionBar().setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM,
-                        ActionBar.DISPLAY_SHOW_CUSTOM);
-                activity.getActionBar().setCustomView(actionBarSwitch, new ActionBar.LayoutParams(
-                        ActionBar.LayoutParams.WRAP_CONTENT,
-                        ActionBar.LayoutParams.WRAP_CONTENT,
-                        Gravity.CENTER_VERTICAL | Gravity.END));
-            }
+    @Override
+    public void onStop() {
+        super.onStop();
+        final SettingsActivity activity = (SettingsActivity) getActivity();
+        if (!activity.onIsHidingHeaders()) {
+            activity.getActionBar().setDisplayOptions(0, ActionBar.DISPLAY_SHOW_CUSTOM);
+            activity.getActionBar().setCustomView(null);
         }
+    }
 
-        mBluetoothEnabler = new BluetoothEnabler(activity, actionBarSwitch);
+    @Override
+    void addPreferencesForActivity() {
+        addPreferencesFromResource(R.xml.bluetooth_settings);
 
         setHasOptionsMenu(true);
     }
@@ -348,7 +361,7 @@ public final class BluetoothSettings extends DeviceListPreferenceFragment {
         public void onClick(View v) {
             if (isRestrictedAndNotPinProtected()) return;
 
-            ((PreferenceActivity) getActivity()).startPreferencePanel(
+            ((SettingsActivity) getActivity()).startPreferencePanel(
                     LocalDeviceProfilesSettings.class.getName(), null,
                     0, mLocalAdapter.getName(), null, 0);
         }
@@ -366,7 +379,7 @@ public final class BluetoothSettings extends DeviceListPreferenceFragment {
                 Bundle args = new Bundle(1);
                 args.putParcelable(DeviceProfilesSettings.EXTRA_DEVICE, device.getDevice());
 
-                ((PreferenceActivity) getActivity()).startPreferencePanel(
+                ((SettingsActivity) getActivity()).startPreferencePanel(
                         DeviceProfilesSettings.class.getName(), args,
                         R.string.bluetooth_device_advanced_title, null, null, 0);
             } else {
diff --git a/src/com/android/settings/bluetooth/DeviceListPreferenceFragment.java b/src/com/android/settings/bluetooth/DeviceListPreferenceFragment.java
index e2faf7f..9ced992 100644
--- a/src/com/android/settings/bluetooth/DeviceListPreferenceFragment.java
+++ b/src/com/android/settings/bluetooth/DeviceListPreferenceFragment.java
@@ -25,9 +25,7 @@ import android.preference.PreferenceGroup;
 import android.preference.PreferenceScreen;
 import android.util.Log;
 
-import com.android.settings.ProgressCategory;
 import com.android.settings.RestrictedSettingsFragment;
-import com.android.settings.SettingsPreferenceFragment;
 
 import java.util.Collection;
 import java.util.WeakHashMap;
diff --git a/src/com/android/settings/dashboard/DashboardSummary.java b/src/com/android/settings/dashboard/DashboardSummary.java
new file mode 100644
index 0000000..f5b47ae
--- /dev/null
+++ b/src/com/android/settings/dashboard/DashboardSummary.java
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.dashboard;
+
+import android.app.Fragment;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import com.android.settings.R;
+
+public class DashboardSummary extends Fragment {
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+
+        final View view = inflater.inflate(R.layout.dashboard, container, false);
+
+        return view;
+    }
+}
diff --git a/src/com/android/settings/deviceinfo/Memory.java b/src/com/android/settings/deviceinfo/Memory.java
index 999611d..4923070 100644
--- a/src/com/android/settings/deviceinfo/Memory.java
+++ b/src/com/android/settings/deviceinfo/Memory.java
@@ -40,7 +40,6 @@ import android.os.storage.StorageEventListener;
 import android.os.storage.StorageManager;
 import android.os.storage.StorageVolume;
 import android.preference.Preference;
-import android.preference.PreferenceActivity;
 import android.preference.PreferenceScreen;
 import android.util.Log;
 import android.view.Menu;
@@ -49,6 +48,7 @@ import android.view.MenuItem;
 import android.widget.Toast;
 
 import com.android.settings.R;
+import com.android.settings.SettingsActivity;
 import com.android.settings.SettingsPreferenceFragment;
 import com.android.settings.Utils;
 import com.google.android.collect.Lists;
@@ -186,8 +186,8 @@ public class Memory extends SettingsPreferenceFragment {
     public boolean onOptionsItemSelected(MenuItem item) {
         switch (item.getItemId()) {
             case R.id.storage_usb:
-                if (getActivity() instanceof PreferenceActivity) {
-                    ((PreferenceActivity) getActivity()).startPreferencePanel(
+                if (getActivity() instanceof SettingsActivity) {
+                    ((SettingsActivity) getActivity()).startPreferencePanel(
                             UsbSettings.class.getCanonicalName(),
                             null,
                             R.string.storage_title_usb, null,
diff --git a/src/com/android/settings/deviceinfo/Status.java b/src/com/android/settings/deviceinfo/Status.java
index a448dae..f9f0416 100644
--- a/src/com/android/settings/deviceinfo/Status.java
+++ b/src/com/android/settings/deviceinfo/Status.java
@@ -16,6 +16,7 @@
 
 package com.android.settings.deviceinfo;
 
+import android.app.Activity;
 import android.bluetooth.BluetoothAdapter;
 import android.content.BroadcastReceiver;
 import android.content.ClipboardManager;
@@ -24,7 +25,6 @@ import android.content.Intent;
 import android.content.IntentFilter;
 import android.content.res.Resources;
 import android.net.ConnectivityManager;
-import android.net.NetworkInfo;
 import android.net.wifi.WifiInfo;
 import android.net.wifi.WifiManager;
 import android.os.Build;
@@ -35,19 +35,15 @@ import android.os.SystemClock;
 import android.os.SystemProperties;
 import android.os.UserHandle;
 import android.preference.Preference;
-import android.preference.PreferenceActivity;
-import android.preference.PreferenceScreen;
 import android.telephony.CellBroadcastMessage;
 import android.telephony.PhoneNumberUtils;
 import android.telephony.PhoneStateListener;
 import android.telephony.ServiceState;
 import android.telephony.TelephonyManager;
 import android.text.TextUtils;
-import android.util.Log;
 import android.view.View;
 import android.widget.AdapterView;
 import android.widget.ListAdapter;
-import android.widget.ListView;
 import android.widget.Toast;
 
 import com.android.internal.telephony.Phone;
@@ -56,6 +52,7 @@ import com.android.internal.telephony.PhoneFactory;
 import com.android.internal.telephony.PhoneStateIntentReceiver;
 import com.android.internal.util.ArrayUtils;
 import com.android.settings.R;
+import com.android.settings.SettingsPreferenceFragment;
 import com.android.settings.Utils;
 
 import java.lang.ref.WeakReference;
@@ -75,7 +72,7 @@ import java.lang.ref.WeakReference;
  * # XMPP/buzz/tickle status : TODO
  *
  */
-public class Status extends PreferenceActivity {
+public class Status extends SettingsPreferenceFragment {
 
     private static final String KEY_DATA_STATE = "data_state";
     private static final String KEY_SERVICE_STATE = "service_state";
@@ -166,8 +163,8 @@ public class Status extends PreferenceActivity {
     private static class MyHandler extends Handler {
         private WeakReference<Status> mStatus;
 
-        public MyHandler(Status activity) {
-            mStatus = new WeakReference<Status>(activity);
+        public MyHandler(Status status) {
+            mStatus = new WeakReference<Status>(status);
         }
 
         @Override
@@ -257,14 +254,14 @@ public class Status extends PreferenceActivity {
     }
 
     @Override
-    protected void onCreate(Bundle icicle) {
+    public void onCreate(Bundle icicle) {
         super.onCreate(icicle);
 
         mHandler = new MyHandler(this);
 
-        mCM = (ConnectivityManager) getSystemService(CONNECTIVITY_SERVICE);
-        mTelephonyManager = (TelephonyManager)getSystemService(TELEPHONY_SERVICE);
-        mWifiManager = (WifiManager) getSystemService(WIFI_SERVICE);
+        mCM = (ConnectivityManager) getSystemService(Activity.CONNECTIVITY_SERVICE);
+        mTelephonyManager = (TelephonyManager)getSystemService(Activity.TELEPHONY_SERVICE);
+        mWifiManager = (WifiManager) getSystemService(Activity.WIFI_SERVICE);
 
         addPreferencesFromResource(R.xml.device_info_status);
         mBatteryLevel = findPreference(KEY_BATTERY_LEVEL);
@@ -279,13 +276,14 @@ public class Status extends PreferenceActivity {
         mUnavailable = mRes.getString(R.string.status_unavailable);
 
         if (UserHandle.myUserId() == UserHandle.USER_OWNER) {
+            PhoneFactory.makeDefaultPhone(getActivity());
             mPhone = PhoneFactory.getDefaultPhone();
         }
         // Note - missing in zaku build, be careful later...
         mSignalStrength = findPreference(KEY_SIGNAL_STRENGTH);
         mUptime = findPreference("up_time");
 
-        if (mPhone == null || Utils.isWifiOnly(getApplicationContext())) {
+        if (mPhone == null || Utils.isWifiOnly(getActivity())) {
             for (String key : PHONE_RELATED_ENTRIES) {
                 removePreferenceFromScreen(key);
             }
@@ -315,7 +313,7 @@ public class Status extends PreferenceActivity {
                 setSummaryText(KEY_IMEI, mPhone.getDeviceId());
 
                 setSummaryText(KEY_IMEI_SV,
-                        ((TelephonyManager) getSystemService(TELEPHONY_SERVICE))
+                        ((TelephonyManager) getSystemService(Activity.TELEPHONY_SERVICE))
                             .getDeviceSoftwareVersion());
 
                 // device is not CDMA, do not display CDMA features
@@ -339,7 +337,7 @@ public class Status extends PreferenceActivity {
             // If formattedNumber is null or empty, it'll display as "Unknown".
             setSummaryText(KEY_PHONE_NUMBER, formattedNumber);
 
-            mPhoneStateReceiver = new PhoneStateIntentReceiver(this, mHandler);
+            mPhoneStateReceiver = new PhoneStateIntentReceiver(getActivity(), mHandler);
             mPhoneStateReceiver.notifySignalStrength(EVENT_SIGNAL_STRENGTH_CHANGED);
             mPhoneStateReceiver.notifyServiceState(EVENT_SERVICE_STATE_CHANGED);
 
@@ -371,34 +369,39 @@ public class Status extends PreferenceActivity {
         } else {
             removePreferenceFromScreen(KEY_SERIAL_NUMBER);
         }
+    }
+
+    @Override
+    public void onActivityCreated(Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
 
         // Make every pref on this screen copy its data to the clipboard on longpress.
         // Super convenient for capturing the IMEI, MAC addr, serial, etc.
         getListView().setOnItemLongClickListener(
-            new AdapterView.OnItemLongClickListener() {
-                @Override
-                public boolean onItemLongClick(AdapterView<?> parent, View view,
-                        int position, long id) {
-                    ListAdapter listAdapter = (ListAdapter) parent.getAdapter();
-                    Preference pref = (Preference) listAdapter.getItem(position);
-
-                    ClipboardManager cm = (ClipboardManager)
-                            getSystemService(Context.CLIPBOARD_SERVICE);
-                    cm.setText(pref.getSummary());
-                    Toast.makeText(
-                        Status.this,
-                        com.android.internal.R.string.text_copied,
-                        Toast.LENGTH_SHORT).show();
-                    return true;
-                }
-            });
+                new AdapterView.OnItemLongClickListener() {
+                    @Override
+                    public boolean onItemLongClick(AdapterView<?> parent, View view,
+                                                   int position, long id) {
+                        ListAdapter listAdapter = (ListAdapter) parent.getAdapter();
+                        Preference pref = (Preference) listAdapter.getItem(position);
+
+                        ClipboardManager cm = (ClipboardManager)
+                                getSystemService(Context.CLIPBOARD_SERVICE);
+                        cm.setText(pref.getSummary());
+                        Toast.makeText(
+                                getActivity(),
+                                com.android.internal.R.string.text_copied,
+                                Toast.LENGTH_SHORT).show();
+                        return true;
+                    }
+                });
     }
 
     @Override
-    protected void onResume() {
+    public void onResume() {
         super.onResume();
 
-        if (mPhone != null && !Utils.isWifiOnly(getApplicationContext())) {
+        if (mPhone != null && !Utils.isWifiOnly(getActivity())) {
             mPhoneStateReceiver.registerIntent();
 
             updateSignalStrength();
@@ -407,17 +410,17 @@ public class Status extends PreferenceActivity {
             mTelephonyManager.listen(mPhoneStateListener,
                     PhoneStateListener.LISTEN_DATA_CONNECTION_STATE);
             if (mShowLatestAreaInfo) {
-                registerReceiver(mAreaInfoReceiver, new IntentFilter(CB_AREA_INFO_RECEIVED_ACTION),
+                getActivity().registerReceiver(mAreaInfoReceiver, new IntentFilter(CB_AREA_INFO_RECEIVED_ACTION),
                         CB_AREA_INFO_SENDER_PERMISSION, null);
                 // Ask CellBroadcastReceiver to broadcast the latest area info received
                 Intent getLatestIntent = new Intent(GET_LATEST_CB_AREA_INFO_ACTION);
-                sendBroadcastAsUser(getLatestIntent, UserHandle.ALL,
+                getActivity().sendBroadcastAsUser(getLatestIntent, UserHandle.ALL,
                         CB_AREA_INFO_SENDER_PERMISSION);
             }
         }
-        registerReceiver(mConnectivityReceiver, mConnectivityIntentFilter,
-                         android.Manifest.permission.CHANGE_NETWORK_STATE, null);
-        registerReceiver(mBatteryInfoReceiver, new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
+        getActivity().registerReceiver(mConnectivityReceiver, mConnectivityIntentFilter,
+                android.Manifest.permission.CHANGE_NETWORK_STATE, null);
+        getActivity().registerReceiver(mBatteryInfoReceiver, new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
         mHandler.sendEmptyMessage(EVENT_UPDATE_STATS);
     }
 
@@ -425,15 +428,15 @@ public class Status extends PreferenceActivity {
     public void onPause() {
         super.onPause();
 
-        if (mPhone != null && !Utils.isWifiOnly(getApplicationContext())) {
+        if (mPhone != null && !Utils.isWifiOnly(getActivity())) {
             mPhoneStateReceiver.unregisterIntent();
             mTelephonyManager.listen(mPhoneStateListener, PhoneStateListener.LISTEN_NONE);
         }
         if (mShowLatestAreaInfo) {
-            unregisterReceiver(mAreaInfoReceiver);
+            getActivity().unregisterReceiver(mAreaInfoReceiver);
         }
-        unregisterReceiver(mBatteryInfoReceiver);
-        unregisterReceiver(mConnectivityReceiver);
+        getActivity().unregisterReceiver(mBatteryInfoReceiver);
+        getActivity().unregisterReceiver(mConnectivityReceiver);
         mHandler.removeMessages(EVENT_UPDATE_STATS);
     }
 
diff --git a/src/com/android/settings/deviceinfo/StorageVolumePreferenceCategory.java b/src/com/android/settings/deviceinfo/StorageVolumePreferenceCategory.java
index 29b1e92..d62d62c 100644
--- a/src/com/android/settings/deviceinfo/StorageVolumePreferenceCategory.java
+++ b/src/com/android/settings/deviceinfo/StorageVolumePreferenceCategory.java
@@ -38,6 +38,7 @@ import android.provider.MediaStore;
 import android.text.format.Formatter;
 
 import com.android.settings.R;
+import com.android.settings.Settings;
 import com.android.settings.deviceinfo.StorageMeasurement.MeasurementDetails;
 import com.android.settings.deviceinfo.StorageMeasurement.MeasurementReceiver;
 import com.google.android.collect.Lists;
@@ -425,8 +426,7 @@ public class StorageVolumePreferenceCategory extends PreferenceCategory {
             intent.putExtra(StorageVolume.EXTRA_STORAGE_VOLUME, mVolume);
         } else if (pref == mItemApps) {
             intent = new Intent(Intent.ACTION_MANAGE_PACKAGE_STORAGE);
-            intent.setClass(getContext(),
-                    com.android.settings.Settings.ManageApplicationsActivity.class);
+            intent.setClass(getContext(), Settings.ManageApplicationsActivity.class);
         } else if (pref == mItemDownloads) {
             intent = new Intent(DownloadManager.ACTION_VIEW_DOWNLOADS).putExtra(
                     DownloadManager.INTENT_EXTRAS_SORT_BY_SIZE, true);
diff --git a/src/com/android/settings/fuelgauge/PowerUsageDetail.java b/src/com/android/settings/fuelgauge/PowerUsageDetail.java
index 01bd4f3..a1e7278 100644
--- a/src/com/android/settings/fuelgauge/PowerUsageDetail.java
+++ b/src/com/android/settings/fuelgauge/PowerUsageDetail.java
@@ -38,8 +38,6 @@ import android.os.BatteryStats;
 import android.os.Bundle;
 import android.os.Process;
 import android.os.UserHandle;
-import android.preference.PreferenceActivity;
-import android.provider.Settings;
 import android.text.TextUtils;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -54,6 +52,7 @@ import com.android.internal.os.BatteryStatsHelper;
 import com.android.internal.util.FastPrintWriter;
 import com.android.settings.DisplaySettings;
 import com.android.settings.R;
+import com.android.settings.SettingsActivity;
 import com.android.settings.WirelessSettings;
 import com.android.settings.applications.InstalledAppDetails;
 import com.android.settings.bluetooth.BluetoothSettings;
@@ -81,7 +80,7 @@ public class PowerUsageDetail extends Fragment implements Button.OnClickListener
     };
 
     public static void startBatteryDetailPage(
-            PreferenceActivity caller, BatteryStatsHelper helper, BatteryEntry entry,
+            SettingsActivity caller, BatteryStatsHelper helper, BatteryEntry entry,
             boolean showLocationButton) {
         // Initialize mStats if necessary.
         helper.getStats();
@@ -400,8 +399,8 @@ public class PowerUsageDetail extends Fragment implements Button.OnClickListener
             mReportButton.setOnClickListener(this);
             
             // check if error reporting is enabled in secure settings
-            int enabled = Settings.Global.getInt(getActivity().getContentResolver(),
-                    Settings.Global.SEND_ACTION_APP_ERROR, 0);
+            int enabled = android.provider.Settings.Global.getInt(getActivity().getContentResolver(),
+                    android.provider.Settings.Global.SEND_ACTION_APP_ERROR, 0);
             if (enabled != 0) {
                 if (mPackages != null && mPackages.length > 0) {
                     try {
@@ -431,35 +430,35 @@ public class PowerUsageDetail extends Fragment implements Button.OnClickListener
         Bundle args = new Bundle();
         args.putString(InstalledAppDetails.ARG_PACKAGE_NAME, mPackages[0]);
 
-        PreferenceActivity pa = (PreferenceActivity)getActivity();
-        pa.startPreferencePanel(InstalledAppDetails.class.getName(), args,
+        SettingsActivity sa = (SettingsActivity) getActivity();
+        sa.startPreferencePanel(InstalledAppDetails.class.getName(), args,
                 R.string.application_info_label, null, null, 0);
     }
 
     private void doAction(int action) {
-        PreferenceActivity pa = (PreferenceActivity)getActivity();
+        SettingsActivity sa = (SettingsActivity)getActivity();
         switch (action) {
             case ACTION_DISPLAY_SETTINGS:
-                pa.startPreferencePanel(DisplaySettings.class.getName(), null,
+                sa.startPreferencePanel(DisplaySettings.class.getName(), null,
                         R.string.display_settings_title, null, null, 0);
                 break;
             case ACTION_WIFI_SETTINGS:
-                pa.startPreferencePanel(WifiSettings.class.getName(), null,
+                sa.startPreferencePanel(WifiSettings.class.getName(), null,
                         R.string.wifi_settings, null, null, 0);
                 break;
             case ACTION_BLUETOOTH_SETTINGS:
-                pa.startPreferencePanel(BluetoothSettings.class.getName(), null,
+                sa.startPreferencePanel(BluetoothSettings.class.getName(), null,
                         R.string.bluetooth_settings, null, null, 0);
                 break;
             case ACTION_WIRELESS_SETTINGS:
-                pa.startPreferencePanel(WirelessSettings.class.getName(), null,
+                sa.startPreferencePanel(WirelessSettings.class.getName(), null,
                         R.string.radio_controls_title, null, null, 0);
                 break;
             case ACTION_APP_DETAILS:
                 startApplicationDetailsActivity();
                 break;
             case ACTION_LOCATION_SETTINGS:
-                pa.startPreferencePanel(LocationSettings.class.getName(), null,
+                sa.startPreferencePanel(LocationSettings.class.getName(), null,
                         R.string.location_settings_title, null, null, 0);
                 break;
             case ACTION_FORCE_STOP:
diff --git a/src/com/android/settings/fuelgauge/PowerUsageSummary.java b/src/com/android/settings/fuelgauge/PowerUsageSummary.java
index 06aff2e..24b5060 100644
--- a/src/com/android/settings/fuelgauge/PowerUsageSummary.java
+++ b/src/com/android/settings/fuelgauge/PowerUsageSummary.java
@@ -29,7 +29,6 @@ import android.os.Parcel;
 import android.os.UserHandle;
 import android.os.UserManager;
 import android.preference.Preference;
-import android.preference.PreferenceActivity;
 import android.preference.PreferenceFragment;
 import android.preference.PreferenceGroup;
 import android.preference.PreferenceScreen;
@@ -43,6 +42,7 @@ import com.android.internal.os.BatteryStatsHelper;
 import com.android.internal.os.PowerProfile;
 import com.android.settings.HelpUtils;
 import com.android.settings.R;
+import com.android.settings.SettingsActivity;
 
 import java.util.List;
 
@@ -141,8 +141,8 @@ public class PowerUsageSummary extends PreferenceFragment {
             byte[] histData = hist.marshall();
             Bundle args = new Bundle();
             args.putByteArray(BatteryHistoryDetail.EXTRA_STATS, histData);
-            PreferenceActivity pa = (PreferenceActivity)getActivity();
-            pa.startPreferencePanel(BatteryHistoryDetail.class.getName(), args,
+            SettingsActivity sa = (SettingsActivity) getActivity();
+            sa.startPreferencePanel(BatteryHistoryDetail.class.getName(), args,
                     R.string.history_details_title, null, null, 0);
             return super.onPreferenceTreeClick(preferenceScreen, preference);
         }
@@ -151,7 +151,7 @@ public class PowerUsageSummary extends PreferenceFragment {
         }
         PowerGaugePreference pgp = (PowerGaugePreference) preference;
         BatteryEntry entry = pgp.getInfo();
-        PowerUsageDetail.startBatteryDetailPage((PreferenceActivity) getActivity(), mStatsHelper,
+        PowerUsageDetail.startBatteryDetailPage((SettingsActivity) getActivity(), mStatsHelper,
                 entry, true);
         return super.onPreferenceTreeClick(preferenceScreen, preference);
     }
diff --git a/src/com/android/settings/inputmethod/InputMethodAndSubtypeEnablerActivity.java b/src/com/android/settings/inputmethod/InputMethodAndSubtypeEnablerActivity.java
index 5693e20..67e32ab 100644
--- a/src/com/android/settings/inputmethod/InputMethodAndSubtypeEnablerActivity.java
+++ b/src/com/android/settings/inputmethod/InputMethodAndSubtypeEnablerActivity.java
@@ -15,13 +15,11 @@
  */
 package com.android.settings.inputmethod;
 
-import android.app.Fragment;
 import android.content.Intent;
-import android.preference.PreferenceActivity;
 
-import com.android.settings.ChooseLockPassword.ChooseLockPasswordFragment;
+import com.android.settings.SettingsActivity;
 
-public class InputMethodAndSubtypeEnablerActivity extends PreferenceActivity {
+public class InputMethodAndSubtypeEnablerActivity extends SettingsActivity {
     @Override
     public Intent getIntent() {
         final Intent modIntent = new Intent(super.getIntent());
diff --git a/src/com/android/settings/inputmethod/InputMethodPreference.java b/src/com/android/settings/inputmethod/InputMethodPreference.java
index aa6430f..1d920de 100644
--- a/src/com/android/settings/inputmethod/InputMethodPreference.java
+++ b/src/com/android/settings/inputmethod/InputMethodPreference.java
@@ -18,6 +18,7 @@ package com.android.settings.inputmethod;
 
 import com.android.internal.inputmethod.InputMethodUtils;
 import com.android.settings.R;
+import com.android.settings.SettingsActivity;
 import com.android.settings.SettingsPreferenceFragment;
 import com.android.settings.Utils;
 
@@ -31,8 +32,6 @@ import android.content.res.Configuration;
 import android.os.Bundle;
 import android.preference.CheckBoxPreference;
 import android.preference.Preference;
-import android.preference.PreferenceActivity;
-import android.provider.Settings;
 import android.text.TextUtils;
 import android.util.Log;
 import android.view.View;
@@ -115,7 +114,7 @@ public class InputMethodPreference extends CheckBoxPreference {
                 @Override
                 public boolean onLongClick(View arg0) {
                     final Bundle bundle = new Bundle();
-                    bundle.putString(Settings.EXTRA_INPUT_METHOD_ID, imiId);
+                    bundle.putString(android.provider.Settings.EXTRA_INPUT_METHOD_ID, imiId);
                     startFragment(mFragment, InputMethodAndSubtypeEnabler.class.getName(),
                             0, bundle);
                     return true;
@@ -147,7 +146,7 @@ public class InputMethodPreference extends CheckBoxPreference {
                 @Override
                 public boolean onLongClick(View arg0) {
                     final Bundle bundle = new Bundle();
-                    bundle.putString(Settings.EXTRA_INPUT_METHOD_ID, imiId);
+                    bundle.putString(android.provider.Settings.EXTRA_INPUT_METHOD_ID, imiId);
                     startFragment(mFragment, InputMethodAndSubtypeEnabler.class.getName(),
                             0, bundle);
                     return true;
@@ -206,13 +205,12 @@ public class InputMethodPreference extends CheckBoxPreference {
 
     public static boolean startFragment(
             Fragment fragment, String fragmentClass, int requestCode, Bundle extras) {
-        if (fragment.getActivity() instanceof PreferenceActivity) {
-            PreferenceActivity preferenceActivity = (PreferenceActivity)fragment.getActivity();
-            preferenceActivity.startPreferencePanel(fragmentClass, extras, 0, null, fragment,
-                    requestCode);
+        if (fragment.getActivity() instanceof SettingsActivity) {
+            SettingsActivity sa = (SettingsActivity) fragment.getActivity();
+            sa.startPreferencePanel(fragmentClass, extras, 0, null, fragment, requestCode);
             return true;
         } else {
-            Log.w(TAG, "Parent isn't PreferenceActivity, thus there's no way to launch the "
+            Log.w(TAG, "Parent isn't Settings, thus there's no way to launch the "
                     + "given Fragment (name: " + fragmentClass + ", requestCode: " + requestCode
                     + ")");
             return false;
diff --git a/src/com/android/settings/inputmethod/KeyboardLayoutDialogFragment.java b/src/com/android/settings/inputmethod/KeyboardLayoutDialogFragment.java
index 451b36e..c77b2c9 100644
--- a/src/com/android/settings/inputmethod/KeyboardLayoutDialogFragment.java
+++ b/src/com/android/settings/inputmethod/KeyboardLayoutDialogFragment.java
@@ -17,7 +17,6 @@
 package com.android.settings.inputmethod;
 
 import com.android.settings.R;
-import com.android.settings.Settings.KeyboardLayoutPickerActivity;
 
 import android.app.AlertDialog;
 import android.app.Activity;
@@ -29,7 +28,6 @@ import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.Loader;
-import android.content.res.Resources;
 import android.hardware.input.InputDeviceIdentifier;
 import android.hardware.input.InputManager;
 import android.hardware.input.KeyboardLayout;
diff --git a/src/com/android/settings/inputmethod/UserDictionaryAddWordFragment.java b/src/com/android/settings/inputmethod/UserDictionaryAddWordFragment.java
index 86c3e79..4f231cb 100644
--- a/src/com/android/settings/inputmethod/UserDictionaryAddWordFragment.java
+++ b/src/com/android/settings/inputmethod/UserDictionaryAddWordFragment.java
@@ -18,7 +18,6 @@ package com.android.settings.inputmethod;
 
 import android.app.Fragment;
 import android.os.Bundle;
-import android.preference.PreferenceActivity;
 import android.view.LayoutInflater;
 import android.view.Menu;
 import android.view.MenuInflater;
@@ -29,6 +28,7 @@ import android.widget.AdapterView;
 import android.widget.ArrayAdapter;
 
 import com.android.settings.R;
+import com.android.settings.SettingsActivity;
 import com.android.settings.inputmethod.UserDictionaryAddWordContents.LocaleRenderer;
 
 import java.util.ArrayList;
@@ -137,8 +137,8 @@ public class UserDictionaryAddWordFragment extends Fragment
             final long id) {
         final LocaleRenderer locale = (LocaleRenderer)parent.getItemAtPosition(pos);
         if (locale.isMoreLanguages()) {
-            PreferenceActivity preferenceActivity = (PreferenceActivity)getActivity();
-            preferenceActivity.startPreferenceFragment(new UserDictionaryLocalePicker(this), true);
+            SettingsActivity sa = (SettingsActivity)getActivity();
+            sa.startPreferenceFragment(new UserDictionaryLocalePicker(this), true);
         } else {
             mContents.updateLocale(locale.getLocaleString());
         }
diff --git a/src/com/android/settings/location/LocationSettings.java b/src/com/android/settings/location/LocationSettings.java
index 6612ba9..40156cf 100644
--- a/src/com/android/settings/location/LocationSettings.java
+++ b/src/com/android/settings/location/LocationSettings.java
@@ -17,23 +17,24 @@
 package com.android.settings.location;
 
 import android.app.ActionBar;
+import android.app.Activity;
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
 import android.location.SettingInjectorService;
+import android.os.Bundle;
 import android.preference.Preference;
-import android.preference.PreferenceActivity;
 import android.preference.PreferenceCategory;
 import android.preference.PreferenceGroup;
 import android.preference.PreferenceScreen;
-import android.provider.Settings;
 import android.util.Log;
 import android.view.Gravity;
 import android.widget.CompoundButton;
 import android.widget.Switch;
 
 import com.android.settings.R;
+import com.android.settings.SettingsActivity;
 
 import java.util.Collections;
 import java.util.Comparator;
@@ -67,10 +68,48 @@ public class LocationSettings extends LocationSettingsBase
     }
 
     @Override
+    public void onActivityCreated(Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
+
+        final Activity activity = getActivity();
+
+        mSwitch = new Switch(activity);
+        final int padding = activity.getResources().getDimensionPixelSize(
+                R.dimen.action_bar_switch_padding);
+        mSwitch.setPaddingRelative(0, 0, padding, 0);
+        mSwitch.setOnCheckedChangeListener(this);
+    }
+
+    @Override
+    public void onStart() {
+        super.onStart();
+
+        final SettingsActivity activity = (SettingsActivity) getActivity();
+
+        // Only show the master switch when we're not being used as Setup Wizard.
+        if (!activity.onIsHidingHeaders()) {
+            activity.getActionBar().setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM,
+                    ActionBar.DISPLAY_SHOW_CUSTOM);
+            activity.getActionBar().setCustomView(mSwitch, new ActionBar.LayoutParams(
+                    ActionBar.LayoutParams.WRAP_CONTENT,
+                    ActionBar.LayoutParams.WRAP_CONTENT,
+                    Gravity.CENTER_VERTICAL | Gravity.END));
+        }
+    }
+
+    @Override
+    public void onStop() {
+        super.onStop();
+        final SettingsActivity activity = (SettingsActivity) getActivity();
+        if (!activity.onIsHidingHeaders()) {
+            activity.getActionBar().setDisplayOptions(0, ActionBar.DISPLAY_SHOW_CUSTOM);
+            activity.getActionBar().setCustomView(null);
+        }
+    }
+
+    @Override
     public void onResume() {
         super.onResume();
-        mSwitch = new Switch(getActivity());
-        mSwitch.setOnCheckedChangeListener(this);
         mValidListener = true;
         createPreferenceHierarchy();
     }
@@ -101,7 +140,7 @@ public class LocationSettings extends LocationSettingsBase
     }
 
     private PreferenceScreen createPreferenceHierarchy() {
-        final PreferenceActivity activity = (PreferenceActivity) getActivity();
+        final SettingsActivity activity = (SettingsActivity) getActivity();
         PreferenceScreen root = getPreferenceScreen();
         if (root != null) {
             root.removeAll();
@@ -139,22 +178,6 @@ public class LocationSettings extends LocationSettingsBase
 
         addLocationServices(activity, root);
 
-        // Only show the master switch when we're not in multi-pane mode, and not being used as
-        // Setup Wizard.
-        if (activity.onIsHidingHeaders() || !activity.onIsMultiPane()) {
-            final int padding = activity.getResources().getDimensionPixelSize(
-                    R.dimen.action_bar_switch_padding);
-            mSwitch.setPaddingRelative(0, 0, padding, 0);
-            activity.getActionBar().setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM,
-                    ActionBar.DISPLAY_SHOW_CUSTOM);
-            activity.getActionBar().setCustomView(mSwitch, new ActionBar.LayoutParams(
-                    ActionBar.LayoutParams.WRAP_CONTENT,
-                    ActionBar.LayoutParams.WRAP_CONTENT,
-                    Gravity.CENTER_VERTICAL | Gravity.END));
-        }
-
-        setHasOptionsMenu(true);
-
         refreshLocationMode();
         return root;
     }
@@ -202,16 +225,16 @@ public class LocationSettings extends LocationSettingsBase
     @Override
     public void onModeChanged(int mode, boolean restricted) {
         switch (mode) {
-            case Settings.Secure.LOCATION_MODE_OFF:
+            case android.provider.Settings.Secure.LOCATION_MODE_OFF:
                 mLocationMode.setSummary(R.string.location_mode_location_off_title);
                 break;
-            case Settings.Secure.LOCATION_MODE_SENSORS_ONLY:
+            case android.provider.Settings.Secure.LOCATION_MODE_SENSORS_ONLY:
                 mLocationMode.setSummary(R.string.location_mode_sensors_only_title);
                 break;
-            case Settings.Secure.LOCATION_MODE_BATTERY_SAVING:
+            case android.provider.Settings.Secure.LOCATION_MODE_BATTERY_SAVING:
                 mLocationMode.setSummary(R.string.location_mode_battery_saving_title);
                 break;
-            case Settings.Secure.LOCATION_MODE_HIGH_ACCURACY:
+            case android.provider.Settings.Secure.LOCATION_MODE_HIGH_ACCURACY:
                 mLocationMode.setSummary(R.string.location_mode_high_accuracy_title);
                 break;
             default:
@@ -221,7 +244,7 @@ public class LocationSettings extends LocationSettingsBase
         // Restricted user can't change the location mode, so disable the master switch. But in some
         // corner cases, the location might still be enabled. In such case the master switch should
         // be disabled but checked.
-        boolean enabled = (mode != Settings.Secure.LOCATION_MODE_OFF);
+        boolean enabled = (mode != android.provider.Settings.Secure.LOCATION_MODE_OFF);
         mSwitch.setEnabled(!restricted);
         mLocationMode.setEnabled(enabled && !restricted);
         mCategoryRecentLocationRequests.setEnabled(enabled);
@@ -247,9 +270,9 @@ public class LocationSettings extends LocationSettingsBase
     @Override
     public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
         if (isChecked) {
-            setLocationMode(Settings.Secure.LOCATION_MODE_HIGH_ACCURACY);
+            setLocationMode(android.provider.Settings.Secure.LOCATION_MODE_HIGH_ACCURACY);
         } else {
-            setLocationMode(Settings.Secure.LOCATION_MODE_OFF);
+            setLocationMode(android.provider.Settings.Secure.LOCATION_MODE_OFF);
         }
     }
 }
diff --git a/src/com/android/settings/location/RecentLocationApps.java b/src/com/android/settings/location/RecentLocationApps.java
index 5708434..164f4e7 100644
--- a/src/com/android/settings/location/RecentLocationApps.java
+++ b/src/com/android/settings/location/RecentLocationApps.java
@@ -26,10 +26,10 @@ import android.os.Bundle;
 import android.os.Process;
 import android.os.UserHandle;
 import android.preference.Preference;
-import android.preference.PreferenceActivity;
 import android.util.Log;
 
 import com.android.settings.R;
+import com.android.settings.SettingsActivity;
 import com.android.settings.applications.InstalledAppDetails;
 
 import java.util.ArrayList;
@@ -44,10 +44,10 @@ public class RecentLocationApps {
 
     private static final int RECENT_TIME_INTERVAL_MILLIS = 15 * 60 * 1000;
 
-    private final PreferenceActivity mActivity;
+    private final SettingsActivity mActivity;
     private final PackageManager mPackageManager;
 
-    public RecentLocationApps(PreferenceActivity activity) {
+    public RecentLocationApps(SettingsActivity activity) {
         mActivity = activity;
         mPackageManager = activity.getPackageManager();
     }
diff --git a/src/com/android/settings/nfc/AndroidBeam.java b/src/com/android/settings/nfc/AndroidBeam.java
index 158ca78..b3cd9c2 100644
--- a/src/com/android/settings/nfc/AndroidBeam.java
+++ b/src/com/android/settings/nfc/AndroidBeam.java
@@ -21,16 +21,14 @@ import android.app.Activity;
 import android.app.Fragment;
 import android.nfc.NfcAdapter;
 import android.os.Bundle;
-import android.os.Handler;
-import android.preference.PreferenceActivity;
 import android.view.Gravity;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.CompoundButton;
-import android.widget.ImageView;
 import android.widget.Switch;
 import com.android.settings.R;
+import com.android.settings.SettingsActivity;
 
 public class AndroidBeam extends Fragment
         implements CompoundButton.OnCheckedChangeListener {
@@ -46,7 +44,7 @@ public class AndroidBeam extends Fragment
 
         mActionBarSwitch = new Switch(activity);
 
-        if (activity instanceof PreferenceActivity) {
+        if (activity instanceof SettingsActivity) {
             final int padding = activity.getResources().getDimensionPixelSize(
                     R.dimen.action_bar_switch_padding);
             mActionBarSwitch.setPaddingRelative(0, 0, padding, 0);
diff --git a/src/com/android/settings/print/PrintServiceSettingsFragment.java b/src/com/android/settings/print/PrintServiceSettingsFragment.java
index 5b9182b..357183f 100644
--- a/src/com/android/settings/print/PrintServiceSettingsFragment.java
+++ b/src/com/android/settings/print/PrintServiceSettingsFragment.java
@@ -38,13 +38,11 @@ import android.graphics.drawable.Drawable;
 import android.net.Uri;
 import android.os.Bundle;
 import android.os.Handler;
-import android.preference.PreferenceActivity;
 import android.print.PrintManager;
 import android.print.PrinterDiscoverySession;
 import android.print.PrinterDiscoverySession.OnPrintersChangeListener;
 import android.print.PrinterId;
 import android.print.PrinterInfo;
-import android.provider.Settings;
 import android.text.TextUtils;
 import android.util.Log;
 import android.view.Gravity;
@@ -64,6 +62,7 @@ import android.widget.SearchView;
 import android.widget.TextView;
 
 import com.android.settings.R;
+import com.android.settings.SettingsActivity;
 import com.android.settings.SettingsPreferenceFragment;
 import com.android.settings.print.PrintSettingsFragment.ToggleSwitch;
 import com.android.settings.print.PrintSettingsFragment.ToggleSwitch.OnBeforeCheckedChangeListener;
@@ -330,8 +329,8 @@ public class PrintServiceSettingsFragment extends SettingsPreferenceFragment
         mToggleSwitch.setCheckedInternal(enabled);
 
         // Title.
-        PreferenceActivity activity = (PreferenceActivity) getActivity();
-        if (!activity.onIsMultiPane() || activity.onIsHidingHeaders()) {
+        SettingsActivity activity = (SettingsActivity) getActivity();
+        if (!activity.onIsHidingHeaders()) {
             mOldActivityTitle = getActivity().getTitle();
             String title = arguments.getString(PrintSettingsFragment.EXTRA_TITLE);
             getActivity().getActionBar().setTitle(title);
@@ -470,8 +469,8 @@ public class PrintServiceSettingsFragment extends SettingsPreferenceFragment
         }
 
         public void register(ContentResolver contentResolver) {
-            contentResolver.registerContentObserver(Settings.Secure.getUriFor(
-                    Settings.Secure.ENABLED_PRINT_SERVICES), false, this);
+            contentResolver.registerContentObserver(android.provider.Settings.Secure.getUriFor(
+                    android.provider.Settings.Secure.ENABLED_PRINT_SERVICES), false, this);
         }
 
         public void unregister(ContentResolver contentResolver) {
diff --git a/src/com/android/settings/quicklaunch/QuickLaunchSettings.java b/src/com/android/settings/quicklaunch/QuickLaunchSettings.java
index 5654323..0081a1e 100644
--- a/src/com/android/settings/quicklaunch/QuickLaunchSettings.java
+++ b/src/com/android/settings/quicklaunch/QuickLaunchSettings.java
@@ -16,6 +16,7 @@
 
 package com.android.settings.quicklaunch;
 
+import android.app.Activity;
 import android.app.AlertDialog;
 import android.app.Dialog;
 import android.content.DialogInterface;
@@ -27,7 +28,6 @@ import android.database.Cursor;
 import android.os.Bundle;
 import android.os.Handler;
 import android.preference.Preference;
-import android.preference.PreferenceActivity;
 import android.preference.PreferenceGroup;
 import android.preference.PreferenceScreen;
 import android.provider.Settings.Bookmarks;
@@ -40,6 +40,7 @@ import android.view.View;
 import android.widget.AdapterView;
 
 import com.android.settings.R;
+import com.android.settings.SettingsPreferenceFragment;
 
 import java.net.URISyntaxException;
 
@@ -49,7 +50,7 @@ import java.net.URISyntaxException;
  * Shows a list of possible shortcuts, the current application each is bound to,
  * and allows choosing a new bookmark for a shortcut.
  */
-public class QuickLaunchSettings extends PreferenceActivity implements
+public class QuickLaunchSettings extends SettingsPreferenceFragment implements
         AdapterView.OnItemLongClickListener, DialogInterface.OnClickListener {
 
     private static final String TAG = "QuickLaunchSettings";
@@ -91,7 +92,7 @@ public class QuickLaunchSettings extends PreferenceActivity implements
     private static final String CLEAR_DIALOG_SHORTCUT = "CLEAR_DIALOG_SHORTCUT";
     
     @Override
-    protected void onCreate(Bundle savedInstanceState) {
+    public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         
         addPreferencesFromResource(R.xml.quick_launch_settings);
@@ -100,27 +101,35 @@ public class QuickLaunchSettings extends PreferenceActivity implements
         mShortcutToPreference = new SparseArray<ShortcutPreference>();
         mBookmarksObserver = new BookmarksObserver(mUiHandler);
         initShortcutPreferences();
-        mBookmarksCursor = managedQuery(Bookmarks.CONTENT_URI, sProjection, null, null);
+        mBookmarksCursor = getActivity().getContentResolver().query(Bookmarks.CONTENT_URI,
+                sProjection, null, null, null);
         getListView().setOnItemLongClickListener(this);
     }
 
     @Override
-    protected void onResume() {
+    public void onResume() {
         super.onResume();
+        mBookmarksCursor = getActivity().getContentResolver().query(Bookmarks.CONTENT_URI,
+                sProjection, null, null, null);
         getContentResolver().registerContentObserver(Bookmarks.CONTENT_URI, true,
                 mBookmarksObserver);
         refreshShortcuts();
     }
     
     @Override
-    protected void onPause() {
+    public void onPause() {
         super.onPause();
         getContentResolver().unregisterContentObserver(mBookmarksObserver);
     }
 
     @Override
-    protected void onRestoreInstanceState(Bundle state) {
-        super.onRestoreInstanceState(state);
+    public void onStop() {
+        mBookmarksCursor.close();
+    }
+
+    @Override
+    public void onActivityCreated(Bundle state) {
+        super.onActivityCreated(state);
         
         // Restore the clear dialog's info
         mClearDialogBookmarkTitle = state.getString(CLEAR_DIALOG_BOOKMARK_TITLE);
@@ -128,7 +137,7 @@ public class QuickLaunchSettings extends PreferenceActivity implements
     }
 
     @Override
-    protected void onSaveInstanceState(Bundle outState) {
+    public void onSaveInstanceState(Bundle outState) {
         super.onSaveInstanceState(outState);
         
         // Save the clear dialog's info
@@ -137,12 +146,12 @@ public class QuickLaunchSettings extends PreferenceActivity implements
     }
 
     @Override
-    protected Dialog onCreateDialog(int id) {
+    public Dialog onCreateDialog(int id) {
         switch (id) {
             
             case DIALOG_CLEAR_SHORTCUT: {
                 // Create the dialog for clearing a shortcut
-                return new AlertDialog.Builder(this)
+                return new AlertDialog.Builder(getActivity())
                         .setTitle(getString(R.string.quick_launch_clear_dialog_title))
                         .setIconAttribute(android.R.attr.alertDialogIcon)
                         .setMessage(getString(R.string.quick_launch_clear_dialog_message,
@@ -156,18 +165,6 @@ public class QuickLaunchSettings extends PreferenceActivity implements
         return super.onCreateDialog(id);
     }
     
-    @Override
-    protected void onPrepareDialog(int id, Dialog dialog) {
-        switch (id) {
-            
-            case DIALOG_CLEAR_SHORTCUT: {
-                AlertDialog alertDialog = (AlertDialog) dialog;
-                alertDialog.setMessage(getString(R.string.quick_launch_clear_dialog_message,
-                        mClearDialogShortcut, mClearDialogBookmarkTitle));
-            }
-        }
-    }
-
     private void showClearDialog(ShortcutPreference pref) {
 
         if (!pref.hasBookmark()) return;
@@ -197,7 +194,7 @@ public class QuickLaunchSettings extends PreferenceActivity implements
 
         // Open the screen to pick a bookmark for this shortcut
         ShortcutPreference pref = (ShortcutPreference) preference;
-        Intent intent = new Intent(this, BookmarkPicker.class);
+        Intent intent = new Intent(getActivity(), BookmarkPicker.class);
         intent.putExtra(BookmarkPicker.EXTRA_SHORTCUT, pref.getShortcut());
         startActivityForResult(intent, REQUEST_PICK_BOOKMARK);
         
@@ -214,8 +211,8 @@ public class QuickLaunchSettings extends PreferenceActivity implements
     }
 
     @Override
-    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
-        if (resultCode != RESULT_OK) {
+    public void onActivityResult(int requestCode, int resultCode, Intent data) {
+        if (resultCode != Activity.RESULT_OK) {
             return;
         }
 
@@ -253,7 +250,7 @@ public class QuickLaunchSettings extends PreferenceActivity implements
     }
     
     private ShortcutPreference createPreference(char shortcut) {
-        ShortcutPreference pref = new ShortcutPreference(QuickLaunchSettings.this, shortcut);
+        ShortcutPreference pref = new ShortcutPreference(getActivity(), shortcut);
         mShortcutGroup.addPreference(pref);
         mShortcutToPreference.put(shortcut, pref);
         return pref;
@@ -303,7 +300,7 @@ public class QuickLaunchSettings extends PreferenceActivity implements
             if (shortcut == 0) continue;
             
             ShortcutPreference pref = getOrCreatePreference(shortcut);
-            CharSequence title = Bookmarks.getTitle(this, c);
+            CharSequence title = Bookmarks.getTitle(getActivity(), c);
 
             /*
              * The title retrieved from Bookmarks.getTitle() will be in
diff --git a/src/com/android/settings/tts/TextToSpeechSettings.java b/src/com/android/settings/tts/TextToSpeechSettings.java
index 0ff7f4f..a3003e8 100644
--- a/src/com/android/settings/tts/TextToSpeechSettings.java
+++ b/src/com/android/settings/tts/TextToSpeechSettings.java
@@ -20,6 +20,7 @@ import static android.provider.Settings.Secure.TTS_DEFAULT_RATE;
 import static android.provider.Settings.Secure.TTS_DEFAULT_SYNTH;
 
 import com.android.settings.R;
+import com.android.settings.SettingsActivity;
 import com.android.settings.SettingsPreferenceFragment;
 import com.android.settings.tts.TtsEnginePreference.RadioButtonGroupState;
 
@@ -30,9 +31,7 @@ import android.content.Intent;
 import android.os.Bundle;
 import android.preference.ListPreference;
 import android.preference.Preference;
-import android.preference.PreferenceActivity;
 import android.preference.PreferenceCategory;
-import android.provider.Settings;
 import android.provider.Settings.SettingNotFoundException;
 import android.speech.tts.TextToSpeech;
 import android.speech.tts.UtteranceProgressListener;
@@ -212,7 +211,7 @@ public class TextToSpeechSettings extends SettingsPreferenceFragment implements
 
         // Set up the default rate.
         try {
-            mDefaultRate = Settings.Secure.getInt(resolver, TTS_DEFAULT_RATE);
+            mDefaultRate = android.provider.Settings.Secure.getInt(resolver, TTS_DEFAULT_RATE);
         } catch (SettingNotFoundException e) {
             // Default rate setting not found, initialize it
             mDefaultRate = TextToSpeech.Engine.DEFAULT_RATE;
@@ -222,12 +221,12 @@ public class TextToSpeechSettings extends SettingsPreferenceFragment implements
 
         mCurrentEngine = mTts.getCurrentEngine();
 
-        PreferenceActivity preferenceActivity = null;
-        if (getActivity() instanceof PreferenceActivity) {
-            preferenceActivity = (PreferenceActivity) getActivity();
+        SettingsActivity activity = null;
+        if (getActivity() instanceof SettingsActivity) {
+            activity = (SettingsActivity) getActivity();
         } else {
             throw new IllegalStateException("TextToSpeechSettings used outside a " +
-                    "PreferenceActivity");
+                    "Settings");
         }
 
         mEnginePreferenceCategory.removeAll();
@@ -235,7 +234,7 @@ public class TextToSpeechSettings extends SettingsPreferenceFragment implements
         List<EngineInfo> engines = mEnginesHelper.getEngines();
         for (EngineInfo engine : engines) {
             TtsEnginePreference enginePref = new TtsEnginePreference(getActivity(), engine,
-                    this, preferenceActivity);
+                    this, activity);
             mEnginePreferenceCategory.addPreference(enginePref);
         }
 
@@ -422,7 +421,8 @@ public class TextToSpeechSettings extends SettingsPreferenceFragment implements
             // Default rate
             mDefaultRate = Integer.parseInt((String) objValue);
             try {
-                Settings.Secure.putInt(getContentResolver(), TTS_DEFAULT_RATE, mDefaultRate);
+                android.provider.Settings.Secure.putInt(getContentResolver(),
+                        TTS_DEFAULT_RATE, mDefaultRate);
                 if (mTts != null) {
                     mTts.setSpeechRate(mDefaultRate / 100.0f);
                 }
@@ -565,7 +565,7 @@ public class TextToSpeechSettings extends SettingsPreferenceFragment implements
             return;
         }
 
-        Settings.Secure.putString(getContentResolver(), TTS_DEFAULT_SYNTH, engine);
+        android.provider.Settings.Secure.putString(getContentResolver(), TTS_DEFAULT_SYNTH, engine);
 
         mAvailableStrLocals = data.getStringArrayListExtra(
             TextToSpeech.Engine.EXTRA_AVAILABLE_VOICES);
diff --git a/src/com/android/settings/tts/TtsEnginePreference.java b/src/com/android/settings/tts/TtsEnginePreference.java
index 486fdf8..7e50c47 100644
--- a/src/com/android/settings/tts/TtsEnginePreference.java
+++ b/src/com/android/settings/tts/TtsEnginePreference.java
@@ -22,7 +22,6 @@ import android.content.DialogInterface;
 import android.content.Intent;
 import android.os.Bundle;
 import android.preference.Preference;
-import android.preference.PreferenceActivity;
 import android.speech.tts.TextToSpeech.EngineInfo;
 import android.util.Log;
 import android.view.View;
@@ -33,6 +32,7 @@ import android.widget.RadioButton;
 
 
 import com.android.settings.R;
+import com.android.settings.SettingsActivity;
 import com.android.settings.Utils;
 
 
@@ -63,7 +63,7 @@ public class TtsEnginePreference extends Preference {
      * The preference activity that owns this preference. Required
      * for instantiating the engine specific settings screen.
      */
-    private final PreferenceActivity mPreferenceActivity;
+    private final SettingsActivity mSettingsActivity;
 
     /**
      * The engine information for the engine this preference represents.
@@ -95,12 +95,12 @@ public class TtsEnginePreference extends Preference {
         };
 
     public TtsEnginePreference(Context context, EngineInfo info, RadioButtonGroupState state,
-            PreferenceActivity prefActivity) {
+            SettingsActivity prefActivity) {
         super(context);
         setLayoutResource(R.layout.preference_tts_engine);
 
         mSharedState = state;
-        mPreferenceActivity = prefActivity;
+        mSettingsActivity = prefActivity;
         mEngineInfo = info;
         mPreventRadioButtonCallbacks = false;
 
@@ -156,10 +156,10 @@ public class TtsEnginePreference extends Preference {
                 }
 
                 // Note that we use this instead of the (easier to use)
-                // PreferenceActivity.startPreferenceFragment because the
+                // SettingsActivity.startPreferenceFragment because the
                 // title will not be updated correctly in the fragment
                 // breadcrumb since it isn't inflated from the XML layout.
-                mPreferenceActivity.startPreferencePanel(
+                mSettingsActivity.startPreferencePanel(
                         TtsEngineSettingsFragment.class.getName(),
                         args, 0, mEngineInfo.label, null, 0);
             }
diff --git a/src/com/android/settings/users/UserSettings.java b/src/com/android/settings/users/UserSettings.java
index bbae37d..849ab94 100644
--- a/src/com/android/settings/users/UserSettings.java
+++ b/src/com/android/settings/users/UserSettings.java
@@ -47,7 +47,6 @@ import android.os.UserHandle;
 import android.os.UserManager;
 import android.preference.Preference;
 import android.preference.Preference.OnPreferenceClickListener;
-import android.preference.PreferenceActivity;
 import android.preference.PreferenceGroup;
 import android.provider.ContactsContract;
 import android.provider.ContactsContract.Contacts;
@@ -67,6 +66,7 @@ import com.android.settings.OwnerInfoSettings;
 import com.android.settings.R;
 import com.android.settings.RestrictedSettingsFragment;
 import com.android.settings.SelectableEditTextPreference;
+import com.android.settings.SettingsActivity;
 import com.android.settings.Utils;
 
 public class UserSettings extends RestrictedSettingsFragment
@@ -377,7 +377,7 @@ public class UserSettings extends RestrictedSettingsFragment
             Bundle extras = new Bundle();
             extras.putInt(RestrictedProfileSettings.EXTRA_USER_ID, userId);
             extras.putBoolean(RestrictedProfileSettings.EXTRA_NEW_USER, newUser);
-            ((PreferenceActivity) getActivity()).startPreferencePanel(
+            ((SettingsActivity) getActivity()).startPreferencePanel(
                     RestrictedProfileSettings.class.getName(),
                     extras, R.string.user_restrictions_title, null,
                     null, 0);
@@ -390,7 +390,7 @@ public class UserSettings extends RestrictedSettingsFragment
             int titleResId = info.id == UserHandle.USER_OWNER ? R.string.owner_info_settings_title
                     : (info.isRestricted() ? R.string.profile_info_settings_title
                             : R.string.user_info_settings_title);
-            ((PreferenceActivity) getActivity()).startPreferencePanel(
+            ((SettingsActivity) getActivity()).startPreferencePanel(
                     OwnerInfoSettings.class.getName(),
                     extras, titleResId, null, null, 0);
         }
diff --git a/src/com/android/settings/wfd/WifiDisplaySettings.java b/src/com/android/settings/wfd/WifiDisplaySettings.java
index d7f4708..c3f22a7 100755
--- a/src/com/android/settings/wfd/WifiDisplaySettings.java
+++ b/src/com/android/settings/wfd/WifiDisplaySettings.java
@@ -42,15 +42,12 @@ import android.os.Looper;
 import android.preference.CheckBoxPreference;
 import android.preference.ListPreference;
 import android.preference.Preference;
-import android.preference.PreferenceActivity;
 import android.preference.PreferenceCategory;
 import android.preference.PreferenceGroup;
 import android.preference.PreferenceScreen;
 import android.provider.Settings;
-import android.text.Html;
 import android.util.Slog;
 import android.util.TypedValue;
-import android.view.Gravity;
 import android.view.LayoutInflater;
 import android.view.Menu;
 import android.view.MenuInflater;
@@ -59,14 +56,11 @@ import android.view.View;
 import android.view.View.OnClickListener;
 import android.view.ViewGroup;
 import android.widget.Button;
-import android.widget.CompoundButton;
 import android.widget.EditText;
 import android.widget.ImageView;
-import android.widget.Switch;
 import android.widget.TextView;
 
 import com.android.internal.app.MediaRouteDialogPresenter;
-import com.android.settings.ProgressCategory;
 import com.android.settings.R;
 import com.android.settings.SettingsPreferenceFragment;
 
diff --git a/src/com/android/settings/wifi/WifiInfo.java b/src/com/android/settings/wifi/WifiInfo.java
index 291a495..cdbb580 100644
--- a/src/com/android/settings/wifi/WifiInfo.java
+++ b/src/com/android/settings/wifi/WifiInfo.java
@@ -19,18 +19,17 @@ package com.android.settings.wifi;
 import com.android.settings.R;
 
 import android.os.Bundle;
-import android.preference.PreferenceActivity;
+import com.android.settings.SettingsPreferenceFragment;
 
 
 /**
  * Wifi information menu item on the diagnostic screen
  */
-public class WifiInfo extends PreferenceActivity {
+public class WifiInfo extends SettingsPreferenceFragment {
 
     @Override
-    protected void onCreate(Bundle savedInstanceState) {
+    public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         addPreferencesFromResource(R.xml.testing_wifi_settings);
     }
-
 }
diff --git a/src/com/android/settings/wifi/WifiPickerActivity.java b/src/com/android/settings/wifi/WifiPickerActivity.java
index e1e7c51..deef8fa 100644
--- a/src/com/android/settings/wifi/WifiPickerActivity.java
+++ b/src/com/android/settings/wifi/WifiPickerActivity.java
@@ -16,7 +16,6 @@
 package com.android.settings.wifi;
 
 import com.android.settings.ButtonBarHandler;
-import com.android.settings.ChooseLockGeneric.ChooseLockGenericFragment;
 import com.android.settings.wifi.p2p.WifiP2pSettings;
 
 import android.app.Fragment;
@@ -54,8 +53,8 @@ public class WifiPickerActivity extends PreferenceActivity implements ButtonBarH
 
     /**
      * Almost dead copy of
-     * {@link PreferenceActivity#startWithFragment(String, Bundle, Fragment, int)}, except
-     * this has additional codes for button bar handling.
+     * {@link PreferenceActivity#startWithFragment(String, Bundle, Fragment, int)}, except this has
+     * additional codes for button bar handling.
      */
     @Override
     public void startWithFragment(String fragmentName, Bundle args,
diff --git a/src/com/android/settings/wifi/WifiSettings.java b/src/com/android/settings/wifi/WifiSettings.java
index 1caf58b..41a4905 100644
--- a/src/com/android/settings/wifi/WifiSettings.java
+++ b/src/com/android/settings/wifi/WifiSettings.java
@@ -19,8 +19,10 @@ package com.android.settings.wifi;
 import static android.net.wifi.WifiConfiguration.INVALID_NETWORK_ID;
 import static android.os.UserManager.DISALLOW_CONFIG_WIFI;
 
+import android.preference.PreferenceActivity;
 import com.android.settings.R;
 import com.android.settings.RestrictedSettingsFragment;
+import com.android.settings.SettingsActivity;
 import com.android.settings.wifi.p2p.WifiP2pSettings;
 
 import android.app.ActionBar;
@@ -49,9 +51,7 @@ import android.os.Bundle;
 import android.os.Handler;
 import android.os.Message;
 import android.preference.Preference;
-import android.preference.PreferenceActivity;
 import android.preference.PreferenceScreen;
-import android.provider.Settings;
 import android.util.AttributeSet;
 import android.util.Log;
 import android.view.ContextMenu;
@@ -172,6 +172,8 @@ public class WifiSettings extends RestrictedSettingsFragment
     // the action bar uses a different set of controls for Setup Wizard
     private boolean mSetupWizardMode;
 
+    private Switch mSwitch;
+
     /* End of "used in Wifi Setup context" */
 
     public WifiSettings() {
@@ -383,42 +385,66 @@ public class WifiSettings extends RestrictedSettingsFragment
 
         if (mSetupWizardMode) {
             getView().setSystemUiVisibility(
-//                    View.STATUS_BAR_DISABLE_BACK |
                     View.STATUS_BAR_DISABLE_HOME |
                     View.STATUS_BAR_DISABLE_RECENT |
                     View.STATUS_BAR_DISABLE_NOTIFICATION_ALERTS |
                     View.STATUS_BAR_DISABLE_CLOCK);
         }
 
+        mEmptyView = (TextView) getView().findViewById(android.R.id.empty);
+        getListView().setEmptyView(mEmptyView);
+
+        if (!mSetupWizardMode) {
+            registerForContextMenu(getListView());
+        }
+        setHasOptionsMenu(true);
+    }
+
+    @Override
+    public void onStart() {
+        super.onStart();
+
         // On/off switch is hidden for Setup Wizard
         if (!mSetupWizardMode) {
-            Switch actionBarSwitch = new Switch(activity);
+            final Activity activity = getActivity();
+
+            mSwitch = new Switch(activity);
 
-            if (activity instanceof PreferenceActivity) {
-                PreferenceActivity preferenceActivity = (PreferenceActivity) activity;
-                if (preferenceActivity.onIsHidingHeaders() || !preferenceActivity.onIsMultiPane()) {
+            if (activity instanceof SettingsActivity) {
+                SettingsActivity sa = (SettingsActivity) activity;
+                if (!sa.onIsHidingHeaders()) {
                     final int padding = activity.getResources().getDimensionPixelSize(
                             R.dimen.action_bar_switch_padding);
-                    actionBarSwitch.setPaddingRelative(0, 0, padding, 0);
+                    mSwitch.setPaddingRelative(0, 0, padding, 0);
                     activity.getActionBar().setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM,
                             ActionBar.DISPLAY_SHOW_CUSTOM);
-                    activity.getActionBar().setCustomView(actionBarSwitch, new ActionBar.LayoutParams(
+                    activity.getActionBar().setCustomView(mSwitch, new ActionBar.LayoutParams(
                             ActionBar.LayoutParams.WRAP_CONTENT,
                             ActionBar.LayoutParams.WRAP_CONTENT,
                             Gravity.CENTER_VERTICAL | Gravity.END));
                 }
             }
 
-            mWifiEnabler = new WifiEnabler(activity, actionBarSwitch);
+            mWifiEnabler = new WifiEnabler(activity, mSwitch);
         }
+    }
 
-        mEmptyView = (TextView) getView().findViewById(android.R.id.empty);
-        getListView().setEmptyView(mEmptyView);
-
-        if (!mSetupWizardMode) {
-            registerForContextMenu(getListView());
+    @Override
+    public void onStop() {
+        super.onStop();
+        Activity activity = getActivity();
+        boolean onIsHidingHeaders = true;
+        if (activity instanceof SettingsActivity){
+            SettingsActivity sa = (SettingsActivity) activity;
+            onIsHidingHeaders = sa.onIsHidingHeaders();
+        } else if (activity instanceof PreferenceActivity) {
+            PreferenceActivity pa = (PreferenceActivity) activity;
+            onIsHidingHeaders = pa.onIsHidingHeaders();
+        }
+        if (!onIsHidingHeaders) {
+            activity.getActionBar().setDisplayOptions(0, ActionBar.DISPLAY_SHOW_CUSTOM);
+            activity.getActionBar().setCustomView(null);
         }
-        setHasOptionsMenu(true);
     }
 
     @Override
@@ -512,8 +538,8 @@ public class WifiSettings extends RestrictedSettingsFragment
                 showDialog(WPS_PBC_DIALOG_ID);
                 return true;
             case MENU_ID_P2P:
-                if (getActivity() instanceof PreferenceActivity) {
-                    ((PreferenceActivity) getActivity()).startPreferencePanel(
+                if (getActivity() instanceof SettingsActivity) {
+                    ((SettingsActivity) getActivity()).startPreferencePanel(
                             WifiP2pSettings.class.getCanonicalName(),
                             null,
                             R.string.wifi_p2p_settings_title, null,
@@ -536,8 +562,8 @@ public class WifiSettings extends RestrictedSettingsFragment
                 }
                 return true;
             case MENU_ID_ADVANCED:
-                if (getActivity() instanceof PreferenceActivity) {
-                    ((PreferenceActivity) getActivity()).startPreferencePanel(
+                if (getActivity() instanceof SettingsActivity) {
+                    ((SettingsActivity) getActivity()).startPreferencePanel(
                             AdvancedWifiSettings.class.getCanonicalName(),
                             null,
                             R.string.wifi_advanced_titlebar, null,
@@ -743,12 +769,12 @@ public class WifiSettings extends RestrictedSettingsFragment
     private void setOffMessage() {
         if (mEmptyView != null) {
             mEmptyView.setText(R.string.wifi_empty_list_wifi_off);
-            if (Settings.Global.getInt(getActivity().getContentResolver(),
-                    Settings.Global.WIFI_SCAN_ALWAYS_AVAILABLE, 0) == 1) {
+            if (android.provider.Settings.Global.getInt(getActivity().getContentResolver(),
+                    android.provider.Settings.Global.WIFI_SCAN_ALWAYS_AVAILABLE, 0) == 1) {
                 mEmptyView.append("\n\n");
                 int resId;
-                if (Settings.Secure.isLocationProviderEnabled(getActivity().getContentResolver(),
-                        LocationManager.NETWORK_PROVIDER)) {
+                if (android.provider.Settings.Secure.isLocationProviderEnabled(
+                        getActivity().getContentResolver(), LocationManager.NETWORK_PROVIDER)) {
                     resId = R.string.wifi_scan_notify_text_location_on;
                 } else {
                     resId = R.string.wifi_scan_notify_text_location_off;
diff --git a/src/com/android/settings/wifi/p2p/WifiP2pSettings.java b/src/com/android/settings/wifi/p2p/WifiP2pSettings.java
index 2ca39f0..879ebf8 100644
--- a/src/com/android/settings/wifi/p2p/WifiP2pSettings.java
+++ b/src/com/android/settings/wifi/p2p/WifiP2pSettings.java
@@ -16,7 +16,6 @@
 
 package com.android.settings.wifi.p2p;
 
-import android.app.ActionBar;
 import android.app.Activity;
 import android.app.AlertDialog;
 import android.app.Dialog;
@@ -38,31 +37,23 @@ import android.net.wifi.p2p.WifiP2pManager.PeerListListener;
 import android.net.wifi.p2p.WifiP2pManager.PersistentGroupInfoListener;
 import android.net.wifi.WpsInfo;
 import android.os.Bundle;
-import android.os.Handler;
 import android.os.SystemProperties;
 import android.preference.Preference;
-import android.preference.PreferenceActivity;
 import android.preference.PreferenceCategory;
 import android.preference.PreferenceGroup;
 import android.preference.PreferenceScreen;
 import android.text.InputFilter;
 import android.text.TextUtils;
 import android.util.Log;
-import android.view.Gravity;
 import android.view.Menu;
 import android.view.MenuInflater;
 import android.view.MenuItem;
 import android.widget.EditText;
-import android.widget.Switch;
 import android.widget.Toast;
 
 import com.android.settings.R;
 import com.android.settings.SettingsPreferenceFragment;
 
-import java.util.Arrays;
-import java.util.List;
-import java.util.Collection;
-
 /*
  * Displays Wi-fi p2p settings UI
  */
diff --git a/tests/src/com/android/settings/SettingsHookTests.java b/tests/src/com/android/settings/SettingsHookTests.java
index ec438cb..4dfd484 100644
--- a/tests/src/com/android/settings/SettingsHookTests.java
+++ b/tests/src/com/android/settings/SettingsHookTests.java
@@ -16,20 +16,15 @@
 
 package com.android.settings;
 
+import com.android.settings.Settings;
 import com.android.settings.tests.Manufacturer;
 import com.android.settings.tests.Operator;
 
-import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
-import android.content.pm.ActivityInfo;
 import android.content.pm.ApplicationInfo;
 import android.content.pm.PackageManager;
 import android.content.pm.ResolveInfo;
-import android.content.res.Resources;
-import android.os.Bundle;
-import android.preference.Preference;
-import android.preference.PreferenceGroup;
 import android.test.ActivityInstrumentationTestCase2;
 
 import java.util.List;