use prefs-style layout for setup wizard date/time settings on non-xlarge screens

Adjusted the screen size test to fall back to phone version of
DateTimeSettingsSetupWizard on large screens.

I made the following changes from how the phone version works:

1. Some layout changes. (Tablet look, bigger margins.)
2. Use zone picker to select time zone.
3. Added isFirstRun boolean extra to hide the pref fields
we don't need to see from setup wizard

Furthermore, I made the following fixes to the existing phone flow
(which had probably never yet been tried on a phone):

1. Added conditionals around access to some variables that only
exist in the xlarge layout.
2. Implemented PreferenceFragment.OnPreferenceStartFragmentCallback
in DateTimeSettingsSetupWizard in order to catch the user tapping
on the timezone preference and show the time zone picker popup.
(Note: for phones in ICS, we might want to launch the zone picker
preferences style, like it would have been had this been a
PreferenceActivity. Or maybe we should just create a separate
DateTimeSettingsSetupWizardPhone activity that subclasses
PreferencesActivity and doesn't need to play this trick.)

Change-Id: Ib5774a005c9f44d730d86c13746d91eb712141cc

4 files changed, 149 insertions, 190 deletions

diff --git a/res/layout-sw600dp/date_time_settings_setupwizard.xml b/res/layout-sw600dp/date_time_settings_setupwizard.xml
index b31462d..e37a4a6 100644
--- a/res/layout-sw600dp/date_time_settings_setupwizard.xml
+++ b/res/layout-sw600dp/date_time_settings_setupwizard.xml
@@ -1,168 +1,68 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!-- Copyright (C) 2010 The Android Open Source Project
+<!-- Copyright (C) 2011 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
+          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.
-  -->
-<RelativeLayout
-    android:id="@+id/layout_root"
-    xmlns:android="http://schemas.android.com/apk/res/android"
-    android:orientation="vertical"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    android:paddingTop="@dimen/datetime_margin_top"
-    android:paddingLeft="@dimen/screen_margin_sides"
-    android:paddingRight="@dimen/screen_margin_sides"
-    android:paddingBottom="@dimen/datetime_margin_bottom">
+-->
 
-    <!-- Title: Set date & time-->
-    <TextView
-        android:id="@+id/title"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:minHeight="48dip"
-        android:layout_alignParentLeft="true"
-        android:layout_marginLeft="16dip"
-        android:layout_alignParentTop="true"
-        android:textSize="32dip"
-        android:textColor="#FF99cc00"
-        android:text="@string/date_and_time_settings_title_setup_wizard"
-        android:gravity="bottom" />
-
-    <!-- Divider -->
-    <View
-        android:id="@+id/top_divider"
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+        android:id="@+id/layout_root"
+        android:layout_height="match_parent"
         android:layout_width="match_parent"
-        android:layout_height="3dip"
-        android:layout_below="@id/title"
-        android:layout_marginTop="6dip"
-        android:layout_marginBottom="17dip"
-        android:background="@color/divider_color" />
-
-    <RelativeLayout
-        android:id="@+id/timezone_auto_time"
-        android:layout_width="716dip"
-        android:layout_height="wrap_content"
-        android:layout_centerHorizontal="true"
-        android:layout_below="@id/top_divider">
-        <!-- timezone -->
-        <Button
-            android:id="@+id/time_zone_button"
-            style="?android:attr/dropDownSpinnerStyle"
-            android:layout_width="304dip"
-            android:layout_height="48dip"
-            android:layout_alignParentLeft="true"
-            android:layout_alignBottom="@+id/date_time_auto"
-            android:gravity="left|center_vertical"
-            android:textAppearance="?android:attr/textAppearanceMedium"
-            android:textSize="20dip" />
-
-        <LinearLayout
-            android:id="@+id/date_time_auto"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:orientation="vertical"
-            android:layout_toRightOf="@id/time_zone_button"
-            android:layout_marginLeft="32dip"
-            android:layout_alignParentRight="true">
-
-            <Switch
-                android:id="@+id/date_time_auto_button"
-                android:layout_width="match_parent"
-                android:layout_height="wrap_content"
-                android:minHeight="?android:attr/listPreferredItemHeight"
-                android:layout_marginLeft="16dip"
-                android:text="@string/date_time_auto"
-                android:textAppearance="?android:attr/textAppearanceMedium"
-                android:textSize="20dip" />
-
-            <!-- Divider -->
-            <View
-                android:layout_width="match_parent"
-                android:layout_height="1px"
-                android:background="@color/divider_color" />
-        </LinearLayout>
-    </RelativeLayout>
+        android:paddingTop="96dip"
+        android:paddingLeft="40dip"
+        android:paddingRight="40dip"
+        android:paddingBottom="96dip"
+        android:orientation="vertical">
+
+    <FrameLayout android:id="@+id/timezone_dropdown_anchor"
+            android:layout_height="0px"
+            android:layout_width="match_parent"
+            android:layout_marginLeft="40dip"
+            android:layout_marginRight="40dip"/>
+
+    <LinearLayout android:layout_height="0px"
+                  android:layout_weight="1"
+                  android:layout_width="match_parent"
+                  android:orientation="vertical">
+
+        <fragment android:id="@+id/date_time_settings_fragment"
+                  class="com.android.settings.DateTimeSettings"
+                  android:layout_width="match_parent"
+                  android:layout_height="match_parent" />
 
-    <LinearLayout
-        android:layout_width="624dip"
-        android:layout_height="wrap_content"
-        android:layout_centerHorizontal="true"
-        android:layout_below="@+id/timezone_auto_time"
-        android:layout_marginTop="48dip"
-        android:orientation="horizontal">
+    </LinearLayout>
 
-        <LinearLayout
-            android:layout_width="312dip"
-            android:layout_height="wrap_content"
-            android:orientation="vertical">
-            <TextView
-                android:id="@+id/date_picker_title"
-                android:layout_width="match_parent"
-                android:layout_height="48dip"
-                android:text="@string/date_picker_title"
-                android:textAppearance="?android:attr/textAppearanceMedium"
-                android:textSize="20dip"
-                android:clickable="false"
-                android:longClickable="false"
-                android:gravity="center" />
-            <DatePicker
-                android:id="@+id/date_picker"
-                android:layout_width="match_parent"
-                android:layout_height="wrap_content"
-                android:layout_below="@id/date_picker_title" />
-        </LinearLayout>
+    <RelativeLayout android:layout_height="wrap_content"
+                    android:layout_weight="0"
+                    android:layout_width="match_parent">
 
-        <!-- divider -->
         <View
-            android:id="@+id/center_divider"
-            android:layout_width="1dip"
-            android:layout_height="match_parent"
-            android:background="@color/divider_color" />
-
-        <LinearLayout
-            android:layout_width="312dip"
-            android:layout_height="wrap_content"
-            android:orientation="vertical">
-            <TextView
-                android:id="@+id/time_picker_title"
-                android:layout_width="match_parent"
-                android:layout_height="48dip"
-                android:text="@string/time_picker_title"
-                android:textAppearance="?android:attr/textAppearanceMedium"
-                android:textSize="20dip"
-                android:gravity="center" />
-
-            <TimePicker
-                android:id="@+id/time_picker"
-                android:layout_width="match_parent"
-                android:layout_height="wrap_content"
-                android:layout_below="@id/time_picker_title" />
-        </LinearLayout>
-    </LinearLayout>
+            android:id="@+id/bottom_divider"
+            android:layout_height="3dip"
+            android:layout_width="match_parent"
+            android:layout_marginTop="0dip"
+            android:layout_marginBottom="16dip"
+            android:background="@color/divider_color"
+            android:layout_above="@+id/next_button"/>
+
+        <Button android:id="@+id/next_button"
+            android:layout_width="wrap_content"
+            android:minWidth="208dip"
+            android:layout_height="48dip"
+            android:layout_marginTop="10dip"
+            android:layout_alignParentRight="true"
+            android:text="@string/next_label"/>
 
-    <View
-        android:id="@+id/bottom_divider"
-        android:layout_width="match_parent"
-        android:layout_height="3dip"
-        android:layout_alignLeft="@id/timezone_auto_time"
-        android:layout_above="@+id/next_button"
-        android:layout_marginBottom="16dip"
-        android:background="@color/divider_color" />
+    </RelativeLayout>
 
-    <Button
-        android:id="@+id/next_button"
-        style="@style/setup_wizard_button"
-        android:layout_alignParentBottom="true"
-        android:layout_alignParentRight="true"
-        android:text="@string/next_label" />
-</RelativeLayout>
+</LinearLayout>
diff --git a/res/layout-sw600dp-land/date_time_settings_setupwizard.xml b/res/layout-sw720dp/date_time_settings_setupwizard.xml
index b31462d..1fc25da 100644
--- a/res/layout-sw600dp-land/date_time_settings_setupwizard.xml
+++ b/res/layout-sw720dp/date_time_settings_setupwizard.xml
@@ -1,11 +1,11 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!-- Copyright (C) 2010 The Android Open Source Project
+<!-- Copyright (C) 2011 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
+          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,
diff --git a/src/com/android/settings/DateTimeSettings.java b/src/com/android/settings/DateTimeSettings.java
index 64f42a0..d2c5973 100644
--- a/src/com/android/settings/DateTimeSettings.java
+++ b/src/com/android/settings/DateTimeSettings.java
@@ -60,6 +60,9 @@ public class DateTimeSettings extends SettingsPreferenceFragment
     private static final int DIALOG_DATEPICKER = 0;
     private static final int DIALOG_TIMEPICKER = 1;
 
+    // have we been launched from the setup wizard?
+    protected static final String EXTRA_IS_FIRST_RUN = "firstRun";
+
     private CheckBoxPreference mAutoTimePref;
     private Preference mTimePref;
     private Preference mTime24Pref;
@@ -81,15 +84,18 @@ public class DateTimeSettings extends SettingsPreferenceFragment
         boolean autoTimeEnabled = getAutoState(Settings.System.AUTO_TIME);
         boolean autoTimeZoneEnabled = getAutoState(Settings.System.AUTO_TIME_ZONE);
 
+        Intent intent = getActivity().getIntent();
+        boolean isFirstRun = intent.getBooleanExtra(EXTRA_IS_FIRST_RUN, false);
+
         mDummyDate = Calendar.getInstance();
         mDummyDate.set(mDummyDate.get(Calendar.YEAR), 11, 31, 13, 0, 0);
 
         mAutoTimePref = (CheckBoxPreference) findPreference(KEY_AUTO_TIME);
         mAutoTimePref.setChecked(autoTimeEnabled);
         mAutoTimeZonePref = (CheckBoxPreference) findPreference(KEY_AUTO_TIME_ZONE);
-        // Override auto-timezone if it's a wifi-only device.
-        // TODO: Remove this when auto-timezone is implemented based on wifi-location.
-        if (Utils.isWifiOnly()) {
+        // Override auto-timezone if it's a wifi-only device or if we're still in setup wizard.
+        // TODO: Remove the wifiOnly test when auto-timezone is implemented based on wifi-location.
+        if (Utils.isWifiOnly() || isFirstRun) {
             getPreferenceScreen().removePreference(mAutoTimeZonePref);
             autoTimeZoneEnabled = false;
         }
@@ -100,6 +106,10 @@ public class DateTimeSettings extends SettingsPreferenceFragment
         mTimeZone = findPreference("timezone");
         mDatePref = findPreference("date");
         mDateFormat = (ListPreference) findPreference(KEY_DATE_FORMAT);
+        if (isFirstRun) {
+            getPreferenceScreen().removePreference(mTime24Pref);
+            getPreferenceScreen().removePreference(mDateFormat);
+        }
 
         String [] dateFormats = getResources().getStringArray(R.array.date_format_values);
         String [] formattedDates = new String[dateFormats.length];
@@ -158,7 +168,7 @@ public class DateTimeSettings extends SettingsPreferenceFragment
                 .unregisterOnSharedPreferenceChangeListener(this);
     }
 
-    private void updateTimeAndDateDisplay(Context context) {
+    public void updateTimeAndDateDisplay(Context context) {
         java.text.DateFormat shortDateFormat = DateFormat.getDateFormat(context);
         final Calendar now = Calendar.getInstance();
         Date dummyDate = mDummyDate.getTime();
diff --git a/src/com/android/settings/DateTimeSettingsSetupWizard.java b/src/com/android/settings/DateTimeSettingsSetupWizard.java
index 670fcbc..685ee00 100644
--- a/src/com/android/settings/DateTimeSettingsSetupWizard.java
+++ b/src/com/android/settings/DateTimeSettingsSetupWizard.java
@@ -18,6 +18,8 @@ package com.android.settings;
 
 import android.app.Activity;
 import android.app.AlarmManager;
+import android.app.Fragment;
+import android.app.FragmentTransaction;
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
@@ -25,6 +27,8 @@ import android.content.IntentFilter;
 import android.content.pm.ActivityInfo;
 import android.content.res.Configuration;
 import android.os.Bundle;
+import android.preference.Preference;
+import android.preference.PreferenceFragment;
 import android.provider.Settings;
 import android.provider.Settings.SettingNotFoundException;
 import android.text.format.DateFormat;
@@ -39,6 +43,7 @@ import android.widget.Button;
 import android.widget.CompoundButton;
 import android.widget.CompoundButton.OnCheckedChangeListener;
 import android.widget.DatePicker;
+import android.widget.LinearLayout;
 import android.widget.ListPopupWindow;
 import android.widget.SimpleAdapter;
 import android.widget.TimePicker;
@@ -47,14 +52,18 @@ import java.util.Calendar;
 import java.util.TimeZone;
 
 public class DateTimeSettingsSetupWizard extends Activity
-        implements OnClickListener, OnItemClickListener, OnCheckedChangeListener{
+        implements OnClickListener, OnItemClickListener, OnCheckedChangeListener,
+        PreferenceFragment.OnPreferenceStartFragmentCallback {
     private static final String TAG = DateTimeSettingsSetupWizard.class.getSimpleName();
 
     // force the first status of auto datetime flag.
     private static final String EXTRA_INITIAL_AUTO_DATETIME_VALUE =
             "extra_initial_auto_datetime_value";
 
-    private boolean mXLargeScreenSize;
+    // If we have enough screen real estate, we use a radically different layout with
+    // big date and time pickers right on the screen, which requires very different handling.
+    // Otherwise, we use the standard date time settings fragment.
+    private boolean mUsingXLargeLayout;
 
     /* Available only in XL */
     private CompoundButton mAutoDateTimeButton;
@@ -74,20 +83,25 @@ public class DateTimeSettingsSetupWizard extends Activity
         requestWindowFeature(Window.FEATURE_NO_TITLE);
         super.onCreate(savedInstanceState);
         setContentView(R.layout.date_time_settings_setupwizard);
-        mXLargeScreenSize = (getResources().getConfiguration().screenLayout
-                & Configuration.SCREENLAYOUT_SIZE_MASK)
-                >= Configuration.SCREENLAYOUT_SIZE_LARGE;
-        if (mXLargeScreenSize) {
+
+        // we know we've loaded the special xlarge layout because it has controls
+        // not present in the standard layout
+        mUsingXLargeLayout = findViewById(R.id.time_zone_button) != null;
+        if (mUsingXLargeLayout) {
+            setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR_LANDSCAPE);
             initUiForXl();
         } else {
+            setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR_PORTRAIT);
             findViewById(R.id.next_button).setOnClickListener(this);
         }
-    }
+        mTimeZoneAdapter = ZonePicker.constructTimezoneAdapter(this, false,
+            R.layout.date_time_setup_custom_list_item_2);
 
-    public void initUiForXl() {
         final View layoutRoot = findViewById(R.id.layout_root);
         layoutRoot.setSystemUiVisibility(View.STATUS_BAR_DISABLE_BACK);
+    }
 
+    public void initUiForXl() {
         // Currently just comment out codes related to auto timezone.
         // TODO: Remove them when we are sure they are unnecessary.
         /*
@@ -98,16 +112,12 @@ public class DateTimeSettingsSetupWizard extends Activity
         mAutoTimeZoneButton.setText(autoTimeZoneEnabled ? R.string.zone_auto_summaryOn :
                 R.string.zone_auto_summaryOff);*/
 
-        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR_LANDSCAPE);
-
         final TimeZone tz = TimeZone.getDefault();
         mSelectedTimeZone = tz;
         mTimeZoneButton = (Button)findViewById(R.id.time_zone_button);
         mTimeZoneButton.setText(tz.getDisplayName());
         // mTimeZoneButton.setText(DateTimeSettings.getTimeZoneText(tz));
         mTimeZoneButton.setOnClickListener(this);
-        mTimeZoneAdapter = ZonePicker.constructTimezoneAdapter(this, false,
-                R.layout.date_time_setup_custom_list_item_2);
 
         final boolean autoDateTimeEnabled;
         final Intent intent = getIntent();
@@ -158,22 +168,11 @@ public class DateTimeSettingsSetupWizard extends Activity
     public void onClick(View view) {
         switch (view.getId()) {
         case R.id.time_zone_button: {
-            mTimeZonePopup = new ListPopupWindow(this, null);
-            mTimeZonePopup.setWidth(mTimeZoneButton.getWidth());
-            mTimeZonePopup.setAnchorView(mTimeZoneButton);
-            mTimeZonePopup.setAdapter(mTimeZoneAdapter);
-            mTimeZonePopup.setOnItemClickListener(this);
-            mTimeZonePopup.setModal(true);
-            mTimeZonePopup.show();
+            showTimezonePicker(R.id.time_zone_button);
             break;
         }
         case R.id.next_button: {
-            if (mXLargeScreenSize) {
-                /* Settings.System.putInt(getContentResolver(), Settings.System.AUTO_TIME_ZONE,
-                        mAutoTimeZoneButton.isChecked() ? 1 : 0); */
-                Settings.System.putInt(getContentResolver(), Settings.System.AUTO_TIME,
-                        mAutoDateTimeButton.isChecked() ? 1 : 0);
-
+            if (mSelectedTimeZone != null) {
                 final TimeZone systemTimeZone = TimeZone.getDefault();
                 if (!systemTimeZone.equals(mSelectedTimeZone)) {
                     Log.i(TAG, "Another TimeZone is selected by a user. Changing system TimeZone.");
@@ -181,7 +180,10 @@ public class DateTimeSettingsSetupWizard extends Activity
                             getSystemService(Context.ALARM_SERVICE);
                     alarm.setTimeZone(mSelectedTimeZone.getID());
                 }
-
+            }
+            if (mAutoDateTimeButton != null) {
+                Settings.System.putInt(getContentResolver(), Settings.System.AUTO_TIME,
+                      mAutoDateTimeButton.isChecked() ? 1 : 0);
                 if (!mAutoDateTimeButton.isChecked()) {
                     DateTimeSettings.setDate(mDatePicker.getYear(), mDatePicker.getMonth(),
                             mDatePicker.getDayOfMonth());
@@ -203,7 +205,7 @@ public class DateTimeSettingsSetupWizard extends Activity
         final boolean autoEnabled = isChecked;  // just for readibility.
         /*if (buttonView == mAutoTimeZoneButton) {
             // In XL screen, we save all the state only when the next button is pressed.
-            if (!mXLargeScreenSize) {
+            if (!mUsingXLargeLayout) {
                 Settings.System.putInt(getContentResolver(),
                         Settings.System.AUTO_TIME_ZONE,
                         isChecked ? 1 : 0);
@@ -233,18 +235,62 @@ public class DateTimeSettingsSetupWizard extends Activity
     @Override
     public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
         final TimeZone tz = ZonePicker.obtainTimeZoneFromItem(parent.getItemAtPosition(position));
-        mSelectedTimeZone = tz;
-
-        final Calendar now = Calendar.getInstance(tz);
-        mTimeZoneButton.setText(tz.getDisplayName());
-        // mTimeZoneButton.setText(DateTimeSettings.getTimeZoneText(tz));
-        mDatePicker.updateDate(now.get(Calendar.YEAR), now.get(Calendar.MONTH),
-                now.get(Calendar.DAY_OF_MONTH));
-        mTimePicker.setCurrentHour(now.get(Calendar.HOUR_OF_DAY));
-        mTimePicker.setCurrentMinute(now.get(Calendar.MINUTE));
+        if (mUsingXLargeLayout) {
+            mSelectedTimeZone = tz;
+            final Calendar now = Calendar.getInstance(tz);
+            if (mTimeZoneButton != null) {
+                mTimeZoneButton.setText(tz.getDisplayName());
+            }
+            // mTimeZoneButton.setText(DateTimeSettings.getTimeZoneText(tz));
+            mDatePicker.updateDate(now.get(Calendar.YEAR), now.get(Calendar.MONTH),
+                    now.get(Calendar.DAY_OF_MONTH));
+            mTimePicker.setCurrentHour(now.get(Calendar.HOUR_OF_DAY));
+            mTimePicker.setCurrentMinute(now.get(Calendar.MINUTE));
+        } else {
+            // in prefs mode, we actually change the setting right now, as opposed to waiting
+            // until Next is pressed in xLarge mode
+            final AlarmManager alarm = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
+            alarm.setTimeZone(tz.getID());
+            DateTimeSettings settingsFragment = (DateTimeSettings) getFragmentManager().
+                    findFragmentById(R.id.date_time_settings_fragment);
+            settingsFragment.updateTimeAndDateDisplay(this);
+        }
         mTimeZonePopup.dismiss();
     }
 
+    /**
+     * If this is called, that means we're in prefs style portrait mode for a large display
+     * and the user has tapped on the time zone preference. If we were a PreferenceActivity,
+     * we'd then launch the timezone fragment in a new activity, but we aren't, and here
+     * on a tablet display, we really want more of a popup picker look' like the one we use
+     * for the xlarge version of this activity. So we just take this opportunity to launch that.
+     *
+     * TODO: For phones, we might want to change this to do the "normal" opening
+     * of the zonepicker fragment in its own activity. Or we might end up just
+     * creating a separate DateTimeSettingsSetupWizardPhone activity that subclasses
+     * PreferenceActivity in the first place to handle all that automatically.
+     */
+    @Override
+    public boolean onPreferenceStartFragment(PreferenceFragment caller, Preference pref) {
+        showTimezonePicker(R.id.timezone_dropdown_anchor);
+        return true;
+    }
+
+    private void showTimezonePicker(int anchorViewId) {
+        View anchorView = findViewById(anchorViewId);
+        if (anchorView == null) {
+            Log.e(TAG, "Unable to find zone picker anchor view " + anchorViewId);
+            return;
+        }
+        mTimeZonePopup = new ListPopupWindow(this, null);
+        mTimeZonePopup.setWidth(anchorView.getWidth());
+        mTimeZonePopup.setAnchorView(anchorView);
+        mTimeZonePopup.setAdapter(mTimeZoneAdapter);
+        mTimeZonePopup.setOnItemClickListener(this);
+        mTimeZonePopup.setModal(true);
+        mTimeZonePopup.show();
+    }
+
     private boolean isAutoDateTimeEnabled() {
         try {
             return Settings.System.getInt(getContentResolver(), Settings.System.AUTO_TIME) > 0;
@@ -264,6 +310,9 @@ public class DateTimeSettingsSetupWizard extends Activity
     }*/
 
     private void updateTimeAndDateDisplay() {
+        if (!mUsingXLargeLayout) {
+            return;
+        }
         final Calendar now = Calendar.getInstance();
         mTimeZoneButton.setText(now.getTimeZone().getDisplayName());
         mDatePicker.updateDate(now.get(Calendar.YEAR), now.get(Calendar.MONTH),