/* * 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 static com.android.settings.dashboard.DashboardTile.TILE_ID_UNDEFINED; import android.app.ActionBar; import android.app.Activity; import android.app.Fragment; import android.app.FragmentManager; import android.app.FragmentTransaction; import android.content.BroadcastReceiver; 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.PackageManager; import android.content.pm.PackageManager.NameNotFoundException; import android.content.pm.ResolveInfo; import android.content.res.Configuration; import android.content.res.TypedArray; import android.content.res.XmlResourceParser; import android.nfc.NfcAdapter; import android.nfc.Tag; import android.os.Bundle; import android.os.Handler; import android.os.Message; 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.text.TextUtils; import android.transition.TransitionManager; import android.util.ArrayMap; import android.util.AttributeSet; import android.util.Log; import android.util.Pair; import android.util.TypedValue; import android.util.Xml; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.view.View.OnClickListener; import android.view.ViewGroup; import android.widget.Button; import android.widget.SearchView; import com.android.internal.logging.MetricsLogger; 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.AccountSettings; import com.android.settings.accounts.AccountSyncSettings; import com.android.settings.applications.DrawOverlayDetails; import com.android.settings.applications.InstalledAppDetails; import com.android.settings.applications.ManageApplications; import com.android.settings.applications.ManageAssist; import com.android.settings.applications.ProcessStatsSummary; import com.android.settings.applications.ProcessStatsUi; import com.android.settings.applications.UsageAccessDetails; import com.android.settings.applications.WriteSettingsDetails; import com.android.settings.blacklist.BlacklistSettings; import com.android.settings.bluetooth.BluetoothSettings; import com.android.settings.contributors.ContributorsCloudFragment; import com.android.settings.cyanogenmod.DisplayRotation; import com.android.settings.dashboard.DashboardCategory; import com.android.settings.dashboard.DashboardSummary; import com.android.settings.dashboard.DashboardTile; import com.android.settings.dashboard.NoHomeDialogFragment; import com.android.settings.dashboard.SearchResultsSummary; import com.android.settings.deviceinfo.PrivateVolumeForget; import com.android.settings.deviceinfo.PrivateVolumeSettings; import com.android.settings.deviceinfo.PublicVolumeSettings; import com.android.settings.deviceinfo.StorageSettings; import com.android.settings.fuelgauge.PowerUsageDetail; import com.android.settings.fuelgauge.PowerUsageSummary; import com.android.settings.livedisplay.LiveDisplay; import com.android.settings.notification.NotificationManagerSettings; import com.android.settings.notification.OtherSoundSettings; import com.android.settings.notification.SoundSettings; import com.android.settings.profiles.NFCProfileTagCallback; import com.android.settings.search.DynamicIndexableContentMonitor; import com.android.settings.search.Index; 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.notification.AppNotificationSettings; import com.android.settings.notification.NotificationAccessSettings; import com.android.settings.notification.NotificationStation; import com.android.settings.notification.OtherSoundSettings; import com.android.settings.notification.ZenAccessSettings; import com.android.settings.notification.ZenModeAutomationSettings; import com.android.settings.notification.ZenModeEventRuleSettings; import com.android.settings.notification.ZenModeExternalRuleSettings; import com.android.settings.notification.ZenModePrioritySettings; import com.android.settings.notification.ZenModeSettings; import com.android.settings.notification.ZenModeScheduleRuleSettings; import com.android.settings.print.PrintJobSettingsFragment; import com.android.settings.print.PrintSettingsFragment; import com.android.settings.search.DynamicIndexableContentMonitor; import com.android.settings.search.Index; import com.android.settings.privacyguard.PrivacyGuardPrefs; import com.android.settings.sim.SimSettings; 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.widget.SwitchBar; import com.android.settings.wifi.AdvancedWifiSettings; import com.android.settings.wifi.SavedAccessPointsWifiSettings; 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.List; import java.util.Map; import java.util.Set; public class SettingsActivity extends Activity implements PreferenceManager.OnPreferenceTreeClickListener, PreferenceFragment.OnPreferenceStartFragmentCallback, ButtonBarHandler, FragmentManager.OnBackStackChangedListener, SearchView.OnQueryTextListener, SearchView.OnCloseListener, MenuItem.OnActionExpandListener { private static final String LOG_TAG = "Settings"; // Constants for state save/restore private static final String SAVE_KEY_CATEGORIES = ":settings:categories"; private static final String SAVE_KEY_SEARCH_MENU_EXPANDED = ":settings:search_menu_expanded"; private static final String SAVE_KEY_SEARCH_QUERY = ":settings:search_query"; private static final String SAVE_KEY_SHOW_HOME_AS_UP = ":settings:show_home_as_up"; private static final String SAVE_KEY_SHOW_SEARCH = ":settings:show_search"; private static final String SAVE_KEY_HOME_ACTIVITIES_COUNT = ":settings:home_activities_count"; /** * When starting this activity, the invoking Intent can contain this extra * string to specify which fragment should be initially displayed. *

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"; /** * Fragment "key" argument passed thru {@link #EXTRA_SHOW_FRAGMENT_ARGUMENTS} */ public static final String EXTRA_FRAGMENT_ARG_KEY = ":settings:fragment_args_key"; public static final String BACK_STACK_PREFS = ":settings:prefs"; // 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}, * those extra can also be specify to supply the title or title res id to be shown for * that fragment. */ public static final String EXTRA_SHOW_FRAGMENT_TITLE = ":settings:show_fragment_title"; /** * The package name used to resolve the title resource id. */ public static final String EXTRA_SHOW_FRAGMENT_TITLE_RES_PACKAGE_NAME = ":settings:show_fragment_title_res_package_name"; public static final String EXTRA_SHOW_FRAGMENT_TITLE_RESID = ":settings:show_fragment_title_resid"; public static final String EXTRA_SHOW_FRAGMENT_AS_SHORTCUT = ":settings:show_fragment_as_shortcut"; public static final String EXTRA_SHOW_FRAGMENT_AS_SUBSETTING = ":settings:show_fragment_as_subsetting"; 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 EMPTY_QUERY = ""; /** * Settings will search for system activities of this action and add them as a top level * settings tile using the following parameters. * *

A category must be specified in the meta-data for the activity named * {@link #EXTRA_CATEGORY_KEY} * *

The title may be defined by meta-data named {@link Utils#META_DATA_PREFERENCE_TITLE} * otherwise the label for the activity will be used. * *

The icon may be defined by meta-data named {@link Utils#META_DATA_PREFERENCE_ICON} * otherwise the icon for the activity will be used. * *

A summary my be defined by meta-data named {@link Utils#META_DATA_PREFERENCE_SUMMARY} */ private static final String EXTRA_SETTINGS_ACTION = "com.android.settings.action.EXTRA_SETTINGS"; /** * The key used to get the category from metadata of activities of action * {@link #EXTRA_SETTINGS_ACTION} * The value must be one of: *

  • com.android.settings.category.wireless
    • *
  • com.android.settings.category.device
    • *
  • com.android.settings.category.personal
    • *
  • com.android.settings.category.system
    • */ private static final String EXTRA_CATEGORY_KEY = "com.android.settings.category"; private static boolean sShowNoHomeNotice = false; private String mFragmentClass; private CharSequence mInitialTitle; private int mInitialTitleResId; private NFCProfileTagCallback mNfcProfileCallback; // 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.sim_settings, R.id.wireless_settings, R.id.device_section, R.id.sound_settings, R.id.display_and_lights_settings, R.id.lockscreen_settings, R.id.notification_manager, 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.system_section, R.id.date_time_settings, R.id.about_settings, R.id.accessibility_settings, R.id.print_settings, R.id.home_settings, R.id.dashboard, R.id.privacy_settings_cyanogenmod }; private static final String[] ENTRY_FRAGMENTS = { WirelessSettings.class.getName(), WifiSettings.class.getName(), AdvancedWifiSettings.class.getName(), SavedAccessPointsWifiSettings.class.getName(), BluetoothSettings.class.getName(), SimSettings.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(), HomeSettings.class.getName(), DisplaySettings.class.getName(), DeviceInfoSettings.class.getName(), ManageApplications.class.getName(), ManageAssist.class.getName(), ProcessStatsUi.class.getName(), NotificationStation.class.getName(), LocationSettings.class.getName(), SecuritySettings.class.getName(), UsageAccessDetails.class.getName(), PrivacySettings.class.getName(), DeviceAdminSettings.class.getName(), AccessibilitySettings.class.getName(), CaptionPropertiesFragment.class.getName(), com.android.settings.accessibility.ToggleDaltonizerPreferenceFragment.class.getName(), TextToSpeechSettings.class.getName(), StorageSettings.class.getName(), PrivateVolumeForget.class.getName(), PrivateVolumeSettings.class.getName(), PublicVolumeSettings.class.getName(), DevelopmentSettings.class.getName(), AndroidBeam.class.getName(), WifiDisplaySettings.class.getName(), PowerUsageSummary.class.getName(), AccountSyncSettings.class.getName(), AccountSettings.class.getName(), CryptKeeperSettings.class.getName(), DataUsageSummary.class.getName(), DreamSettings.class.getName(), UserSettings.class.getName(), NotificationAccessSettings.class.getName(), ZenAccessSettings.class.getName(), PrintSettingsFragment.class.getName(), PrintJobSettingsFragment.class.getName(), TrustedCredentialsSettings.class.getName(), PaymentSettings.class.getName(), KeyboardLayoutPickerFragment.class.getName(), ZenModeSettings.class.getName(), SoundSettings.class.getName(), ChooseLockPassword.ChooseLockPasswordFragment.class.getName(), ChooseLockPattern.ChooseLockPatternFragment.class.getName(), InstalledAppDetails.class.getName(), AppNotificationSettings.class.getName(), OtherSoundSettings.class.getName(), ApnSettings.class.getName(), WifiCallingSettings.class.getName(), ZenModePrioritySettings.class.getName(), ZenModeAutomationSettings.class.getName(), ZenModeScheduleRuleSettings.class.getName(), ZenModeEventRuleSettings.class.getName(), ZenModeExternalRuleSettings.class.getName(), ProcessStatsUi.class.getName(), PowerUsageDetail.class.getName(), ProcessStatsSummary.class.getName(), DrawOverlayDetails.class.getName(), WriteSettingsDetails.class.getName(), LiveDisplay.class.getName(), com.android.settings.cyanogenmod.DisplayRotation.class.getName(), com.android.settings.cyanogenmod.PrivacySettings.class.getName(), BlacklistSettings.class.getName(), ContributorsCloudFragment.class.getName(), NotificationManagerSettings.class.getName() }; private static final String[] LIKE_SHORTCUT_INTENT_ACTION_ARRAY = { "android.settings.APPLICATION_DETAILS_SETTINGS" }; private SharedPreferences mDevelopmentPreferences; private SharedPreferences.OnSharedPreferenceChangeListener mDevelopmentPreferencesListener; 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; invalidateCategories(true); } } } }; private final DynamicIndexableContentMonitor mDynamicIndexableContentMonitor = new DynamicIndexableContentMonitor(); private ActionBar mActionBar; private SwitchBar mSwitchBar; private Button mNextButton; private boolean mDisplayHomeAsUpEnabled; private boolean mDisplaySearch; private boolean mIsShowingDashboard; private boolean mIsShortcut; private ViewGroup mContent; private SearchView mSearchView; private MenuItem mSearchMenuItem; private boolean mSearchMenuItemExpanded = false; private SearchResultsSummary mSearchResultsFragment; private String mSearchQuery; // Categories private ArrayList mCategories = new ArrayList(); private static final String MSG_DATA_FORCE_REFRESH = "msg_data_force_refresh"; private static final int MSG_BUILD_CATEGORIES = 1; private Handler mHandler = new Handler() { @Override public void handleMessage(Message msg) { switch (msg.what) { case MSG_BUILD_CATEGORIES: { final boolean forceRefresh = msg.getData().getBoolean(MSG_DATA_FORCE_REFRESH); if (forceRefresh) { buildDashboardCategories(mCategories); } } break; } } }; private boolean mNeedToRevertToInitialFragment = false; private int mHomeActivitiesCount = 1; private Intent mResultIntentData; public SwitchBar getSwitchBar() { return mSwitchBar; } public List getDashboardCategories(boolean forceRefresh) { if (forceRefresh || mCategories.size() == 0) { buildDashboardCategories(mCategories); } return mCategories; } @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 void invalidateCategories(boolean forceRefresh) { if (!mHandler.hasMessages(MSG_BUILD_CATEGORIES)) { Message msg = new Message(); msg.what = MSG_BUILD_CATEGORIES; msg.getData().putBoolean(MSG_DATA_FORCE_REFRESH, forceRefresh); } } @Override public void onConfigurationChanged(Configuration newConfig) { super.onConfigurationChanged(newConfig); Index.getInstance(this).update(); } @Override protected void onStart() { super.onStart(); if (mNeedToRevertToInitialFragment) { revertToInitialFragment(); } } @Override public boolean onCreateOptionsMenu(Menu menu) { if (!mDisplaySearch) { return false; } MenuInflater inflater = getMenuInflater(); inflater.inflate(R.menu.options_menu, menu); // Cache the search query (can be overriden by the OnQueryTextListener) final String query = mSearchQuery; mSearchMenuItem = menu.findItem(R.id.search); mSearchView = (SearchView) mSearchMenuItem.getActionView(); if (mSearchMenuItem == null || mSearchView == null) { return false; } if (mSearchResultsFragment != null) { mSearchResultsFragment.setSearchView(mSearchView); } mSearchMenuItem.setOnActionExpandListener(this); mSearchView.setOnQueryTextListener(this); mSearchView.setOnCloseListener(this); if (mSearchMenuItemExpanded) { mSearchMenuItem.expandActionView(); } mSearchView.setQuery(query, true /* submit */); return true; } private static boolean isShortCutIntent(final Intent intent) { Set categories = intent.getCategories(); return (categories != null) && categories.contains("com.android.settings.SHORTCUT"); } private static boolean isLikeShortCutIntent(final Intent intent) { String action = intent.getAction(); if (action == null) { return false; } for (int i = 0; i < LIKE_SHORTCUT_INTENT_ACTION_ARRAY.length; i++) { if (LIKE_SHORTCUT_INTENT_ACTION_ARRAY[i].equals(action)) return true; } return false; } @Override protected void onCreate(Bundle savedState) { super.onCreate(savedState); // Should happen before any call to getIntent() getMetaData(); final Intent intent = getIntent(); if (intent.hasExtra(EXTRA_UI_OPTIONS)) { getWindow().setUiOptions(intent.getIntExtra(EXTRA_UI_OPTIONS, 0)); } mDevelopmentPreferences = getSharedPreferences(DevelopmentSettings.PREF_FILE, Context.MODE_PRIVATE); // Getting Intent properties can only be done after the super.onCreate(...) final String initialFragmentName = intent.getStringExtra(EXTRA_SHOW_FRAGMENT); mIsShortcut = isShortCutIntent(intent) || isLikeShortCutIntent(intent) || intent.getBooleanExtra(EXTRA_SHOW_FRAGMENT_AS_SHORTCUT, false); final ComponentName cn = intent.getComponent(); final String className = cn.getClassName(); mIsShowingDashboard = className.equals(Settings.class.getName()); // This is a "Sub Settings" when: // - this is a real SubSettings // - or :settings:show_fragment_as_subsetting is passed to the Intent final boolean isSubSettings = this instanceof SubSettings || intent.getBooleanExtra(EXTRA_SHOW_FRAGMENT_AS_SUBSETTING, false); // If this is a sub settings, then apply the SubSettings Theme for the ActionBar content insets if (isSubSettings) { // Check also that we are not a Theme Dialog as we don't want to override them final int themeResId = getThemeResId(); if (themeResId != R.style.Theme_DialogWhenLarge && themeResId != R.style.Theme_SubSettingsDialogWhenLarge) { setTheme(R.style.Theme_SubSettings); } } setContentView(mIsShowingDashboard ? R.layout.settings_main_dashboard : R.layout.settings_main_prefs); mContent = (ViewGroup) findViewById(R.id.main_content); getFragmentManager().addOnBackStackChangedListener(this); if (mIsShowingDashboard) { // Run the Index update only if we have some space if (!Utils.isLowStorage(this)) { Index.getInstance(getApplicationContext()).update(); } else { Log.w(LOG_TAG, "Cannot update the Indexer as we are running low on storage space!"); } } if (savedState != null) { // We are restarting from a previous saved state; used that to initialize, instead // of starting fresh. mSearchMenuItemExpanded = savedState.getBoolean(SAVE_KEY_SEARCH_MENU_EXPANDED); mSearchQuery = savedState.getString(SAVE_KEY_SEARCH_QUERY); setTitleFromIntent(intent); ArrayList categories = savedState.getParcelableArrayList(SAVE_KEY_CATEGORIES); if (categories != null) { mCategories.clear(); mCategories.addAll(categories); setTitleFromBackStack(); } mDisplayHomeAsUpEnabled = savedState.getBoolean(SAVE_KEY_SHOW_HOME_AS_UP); mDisplaySearch = savedState.getBoolean(SAVE_KEY_SHOW_SEARCH); mHomeActivitiesCount = savedState.getInt(SAVE_KEY_HOME_ACTIVITIES_COUNT, 1 /* one home activity by default */); } else { if (!mIsShowingDashboard) { mDisplaySearch = false; // UP will be shown only if it is a sub settings if (mIsShortcut) { mDisplayHomeAsUpEnabled = isSubSettings; } else if (isSubSettings) { mDisplayHomeAsUpEnabled = true; } else { mDisplayHomeAsUpEnabled = false; } setTitleFromIntent(intent); Bundle initialArguments = intent.getBundleExtra(EXTRA_SHOW_FRAGMENT_ARGUMENTS); switchToFragment(initialFragmentName, initialArguments, true, false, mInitialTitleResId, mInitialTitle, false); } else { // No UP affordance if we are displaying the main Dashboard mDisplayHomeAsUpEnabled = false; // Show Search affordance mDisplaySearch = true; mInitialTitleResId = R.string.dashboard_title; switchToFragment(DashboardSummary.class.getName(), null, false, false, mInitialTitleResId, mInitialTitle, false); } } mActionBar = getActionBar(); if (mActionBar != null) { mActionBar.setDisplayHomeAsUpEnabled(mDisplayHomeAsUpEnabled); mActionBar.setHomeButtonEnabled(mDisplayHomeAsUpEnabled); } mSwitchBar = (SwitchBar) findViewById(R.id.switch_bar); // see if we should show Back/Next buttons if (intent.getBooleanExtra(EXTRA_PREFS_SHOW_BUTTON_BAR, false)) { View buttonBar = findViewById(R.id.button_bar); if (buttonBar != null) { buttonBar.setVisibility(View.VISIBLE); Button backButton = (Button)findViewById(R.id.back_button); backButton.setOnClickListener(new OnClickListener() { public void onClick(View v) { setResult(RESULT_CANCELED, getResultIntentData()); finish(); } }); Button skipButton = (Button)findViewById(R.id.skip_button); skipButton.setOnClickListener(new OnClickListener() { public void onClick(View v) { setResult(RESULT_OK, getResultIntentData()); finish(); } }); mNextButton = (Button)findViewById(R.id.next_button); mNextButton.setOnClickListener(new OnClickListener() { public void onClick(View v) { setResult(RESULT_OK, getResultIntentData()); 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); } } } mHomeActivitiesCount = getHomeActivitiesCount(); } private int getHomeActivitiesCount() { final ArrayList homeApps = new ArrayList(); getPackageManager().getHomeActivities(homeApps); return homeApps.size(); } private void setTitleFromIntent(Intent intent) { final int initialTitleResId = intent.getIntExtra(EXTRA_SHOW_FRAGMENT_TITLE_RESID, -1); if (initialTitleResId > 0) { mInitialTitle = null; mInitialTitleResId = initialTitleResId; final String initialTitleResPackageName = intent.getStringExtra( EXTRA_SHOW_FRAGMENT_TITLE_RES_PACKAGE_NAME); if (initialTitleResPackageName != null) { try { Context authContext = createPackageContextAsUser(initialTitleResPackageName, 0 /* flags */, new UserHandle(UserHandle.myUserId())); mInitialTitle = authContext.getResources().getText(mInitialTitleResId); setTitle(mInitialTitle); mInitialTitleResId = -1; return; } catch (NameNotFoundException e) { Log.w(LOG_TAG, "Could not find package" + initialTitleResPackageName); } } else { setTitle(mInitialTitleResId); } } else { mInitialTitleResId = -1; final String initialTitle = intent.getStringExtra(EXTRA_SHOW_FRAGMENT_TITLE); mInitialTitle = (initialTitle != null) ? initialTitle : getTitle(); setTitle(mInitialTitle); } } @Override public void onBackStackChanged() { setTitleFromBackStack(); } private int setTitleFromBackStack() { final int count = getFragmentManager().getBackStackEntryCount(); if (count == 0) { if (mInitialTitleResId > 0) { setTitle(mInitialTitleResId); } else { setTitle(mInitialTitle); } return 0; } FragmentManager.BackStackEntry bse = getFragmentManager().getBackStackEntryAt(count - 1); setTitleFromBackStackEntry(bse); return count; } private void setTitleFromBackStackEntry(FragmentManager.BackStackEntry bse) { final CharSequence title; final int titleRes = bse.getBreadCrumbTitleRes(); if (titleRes > 0) { title = getText(titleRes); } else { title = bse.getBreadCrumbTitle(); } if (title != null) { setTitle(title); } } @Override protected void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); if (mCategories.size() > 0) { outState.putParcelableArrayList(SAVE_KEY_CATEGORIES, mCategories); } outState.putBoolean(SAVE_KEY_SHOW_HOME_AS_UP, mDisplayHomeAsUpEnabled); outState.putBoolean(SAVE_KEY_SHOW_SEARCH, mDisplaySearch); if (mDisplaySearch) { // The option menus are created if the ActionBar is visible and they are also created // asynchronously. If you launch Settings with an Intent action like // android.intent.action.POWER_USAGE_SUMMARY and at the same time your device is locked // thru a LockScreen, onCreateOptionsMenu() is not yet called and references to the search // menu item and search view are null. boolean isExpanded = (mSearchMenuItem != null) && mSearchMenuItem.isActionViewExpanded(); outState.putBoolean(SAVE_KEY_SEARCH_MENU_EXPANDED, isExpanded); String query = (mSearchView != null) ? mSearchView.getQuery().toString() : EMPTY_QUERY; outState.putString(SAVE_KEY_SEARCH_QUERY, query); } outState.putInt(SAVE_KEY_HOME_ACTIVITIES_COUNT, mHomeActivitiesCount); } @Override public void onResume() { super.onResume(); if (mIsShowingDashboard) { MetricsLogger.visible(this, MetricsLogger.MAIN_SETTINGS); } final int newHomeActivityCount = getHomeActivitiesCount(); if (newHomeActivityCount != mHomeActivitiesCount) { mHomeActivitiesCount = newHomeActivityCount; invalidateCategories(true); } mDevelopmentPreferencesListener = new SharedPreferences.OnSharedPreferenceChangeListener() { @Override public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) { invalidateCategories(true); } }; mDevelopmentPreferences.registerOnSharedPreferenceChangeListener( mDevelopmentPreferencesListener); registerReceiver(mBatteryInfoReceiver, new IntentFilter(Intent.ACTION_BATTERY_CHANGED)); mDynamicIndexableContentMonitor.register(this); if(mDisplaySearch && !TextUtils.isEmpty(mSearchQuery)) { onQueryTextSubmit(mSearchQuery); } } @Override public void onPause() { super.onPause(); if (mIsShowingDashboard) { MetricsLogger.hidden(this, MetricsLogger.MAIN_SETTINGS); } unregisterReceiver(mBatteryInfoReceiver); mDynamicIndexableContentMonitor.unregister(); } @Override public void onDestroy() { super.onDestroy(); mDevelopmentPreferences.unregisterOnSharedPreferenceChangeListener( mDevelopmentPreferencesListener); mDevelopmentPreferencesListener = null; } 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; } @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, args); 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 result. */ public void startPreferencePanel(String fragmentClass, Bundle args, int titleRes, CharSequence titleText, Fragment resultTo, int resultRequestCode) { String title = null; if (titleRes < 0) { if (titleText != null) { title = titleText.toString(); } else { // There not much we can do in that case title = ""; } } Utils.startWithFragment(this, fragmentClass, args, resultTo, resultRequestCode, titleRes, title, mIsShortcut); } /** * Start a new fragment in a new activity containing a preference panel for a given user. 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 userHandle The user for which the panel has to be started. */ public void startPreferencePanelAsUser(String fragmentClass, Bundle args, int titleRes, CharSequence titleText, UserHandle userHandle) { // This is a workaround. // // Calling startWithFragmentAsUser() without specifying FLAG_ACTIVITY_NEW_TASK to the intent // starting the fragment could cause a native stack corruption. See b/17523189. However, // adding that flag and start the preference panel with the same UserHandler will make it // impossible to use back button to return to the previous screen. See b/20042570. // // We work around this issue by adding FLAG_ACTIVITY_NEW_TASK to the intent, while doing // another check here to call startPreferencePanel() instead of startWithFragmentAsUser() // when we're calling it as the same user. if (userHandle.getIdentifier() == UserHandle.myUserId()) { startPreferencePanel(fragmentClass, args, titleRes, titleText, null, 0); } else { String title = null; if (titleRes < 0) { if (titleText != null) { title = titleText.toString(); } else { // There not much we can do in that case title = ""; } } Utils.startWithFragmentAsUser(this, fragmentClass, args, titleRes, title, mIsShortcut, userHandle); } } /** * 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); finish(); } /** * 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.main_content, fragment); if (push) { transaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN); transaction.addToBackStack(BACK_STACK_PREFS); } else { transaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE); } transaction.commitAllowingStateLoss(); } /** * Switch to a specific Fragment with taking care of validation, Title and BackStack */ private Fragment switchToFragment(String fragmentName, Bundle args, boolean validate, boolean addToBackStack, int titleResId, CharSequence title, boolean withTransition) { 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.replace(R.id.main_content, f); if (withTransition) { TransitionManager.beginDelayedTransition(mContent); } if (addToBackStack) { transaction.addToBackStack(SettingsActivity.BACK_STACK_PREFS); } if (titleResId > 0) { transaction.setBreadCrumbTitle(titleResId); } else if (title != null) { transaction.setBreadCrumbTitle(title); } transaction.commitAllowingStateLoss(); getFragmentManager().executePendingTransactions(); return f; } /** * Called when the activity needs its list of categories/tiles built. * * @param categories The list in which to place the tiles categories. */ private void buildDashboardCategories(List categories) { categories.clear(); loadCategoriesFromResource(R.xml.dashboard_categories, categories, this); updateTilesList(categories); } /** * Parse the given XML file as a categories description, adding each * parsed categories and tiles into the target list. * * @param resid The XML resource to load and parse. * @param target The list in which the parsed categories and tiles should be placed. */ public static void loadCategoriesFromResource(int resid, List target, Context context) { XmlResourceParser parser = null; try { parser = context.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 (!"dashboard-categories".equals(nodeName)) { throw new RuntimeException( "XML document must start with 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 ("dashboard-category".equals(nodeName)) { DashboardCategory category = new DashboardCategory(); TypedArray sa = context.obtainStyledAttributes( attrs, com.android.internal.R.styleable.PreferenceHeader); category.id = sa.getResourceId( com.android.internal.R.styleable.PreferenceHeader_id, (int)DashboardCategory.CAT_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) { category.titleRes = tv.resourceId; } else { category.title = tv.string; } } sa.recycle(); sa = context.obtainStyledAttributes(attrs, com.android.internal.R.styleable.Preference); tv = sa.peekValue( com.android.internal.R.styleable.Preference_key); if (tv != null && tv.type == TypedValue.TYPE_STRING) { if (tv.resourceId != 0) { category.key = context.getString(tv.resourceId); } else { category.key = tv.string.toString(); } } sa.recycle(); 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("dashboard-tile")) { DashboardTile tile = new DashboardTile(); sa = context.obtainStyledAttributes( attrs, com.android.internal.R.styleable.PreferenceHeader); tile.id = sa.getResourceId( com.android.internal.R.styleable.PreferenceHeader_id, (int)TILE_ID_UNDEFINED); tv = sa.peekValue( com.android.internal.R.styleable.PreferenceHeader_title); if (tv != null && tv.type == TypedValue.TYPE_STRING) { if (tv.resourceId != 0) { tile.titleRes = tv.resourceId; } else { tile.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) { tile.summaryRes = tv.resourceId; } else { tile.summary = tv.string; } } tile.iconRes = sa.getResourceId( com.android.internal.R.styleable.PreferenceHeader_icon, 0); tile.fragment = sa.getString( com.android.internal.R.styleable.PreferenceHeader_fragment); sa.recycle(); if (curBundle == null) { curBundle = new Bundle(); } final int innerDepth2 = parser.getDepth(); while ((type=parser.next()) != XmlPullParser.END_DOCUMENT && (type != XmlPullParser.END_TAG || parser.getDepth() > innerDepth2)) { if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { continue; } String innerNodeName2 = parser.getName(); if (innerNodeName2.equals("extra")) { context.getResources().parseBundleExtra("extra", attrs, curBundle); XmlUtils.skipCurrentTag(parser); } else if (innerNodeName2.equals("intent")) { tile.intent = Intent.parseIntent(context.getResources(), parser, attrs); } else { XmlUtils.skipCurrentTag(parser); } } if (curBundle.size() > 0) { tile.fragmentArguments = curBundle; curBundle = null; } // Show the SIM Cards setting if there are more than 2 SIMs installed. if(tile.id != R.id.sim_settings || Utils.showSimCardTile(context)){ category.addTile(tile); } } else if (innerNodeName.equals("external-tiles")) { category.externalIndex = category.getTilesCount(); } else { XmlUtils.skipCurrentTag(parser); } } target.add(category); } else { XmlUtils.skipCurrentTag(parser); } } } catch (XmlPullParserException e) { throw new RuntimeException("Error parsing categories", e); } catch (IOException e) { throw new RuntimeException("Error parsing categories", e); } finally { if (parser != null) parser.close(); } } private void updateTilesList(List target) { final boolean showDev = mDevelopmentPreferences.getBoolean( DevelopmentSettings.PREF_SHOW, android.os.Build.TYPE.equals("eng")); final UserManager um = (UserManager) getSystemService(Context.USER_SERVICE); final int size = target.size(); for (int i = 0; i < size; i++) { DashboardCategory category = target.get(i); // Ids are integers, so downcasting is ok int id = (int) category.id; int n = category.getTilesCount() - 1; while (n >= 0) { DashboardTile tile = category.getTile(n); boolean removeTile = false; id = (int) tile.id; if (id == R.id.operator_settings || id == R.id.manufacturer_settings || id == R.id.device_specific_gesture_settings) { if (!Utils.updateTileToSpecificActivityFromMetaDataOrRemove(this, tile)) { removeTile = true; } } else if (id == R.id.wifi_settings) { // Remove WiFi Settings if WiFi service is not available. if (!getPackageManager().hasSystemFeature(PackageManager.FEATURE_WIFI)) { removeTile = true; } } else if (id == R.id.bluetooth_settings) { // Remove Bluetooth Settings if Bluetooth service is not available. if (!getPackageManager().hasSystemFeature(PackageManager.FEATURE_BLUETOOTH)) { removeTile = true; } } else if (id == R.id.mobile_networks) { if (!getPackageManager().hasSystemFeature(PackageManager.FEATURE_TELEPHONY)) { removeTile = true; } } else if (id == R.id.data_usage_settings) { // Remove data usage when kernel module not enabled if (!Utils.isBandwidthControlEnabled()) { removeTile = true; } } else if (id == R.id.battery_settings) { // Remove battery settings when battery is not available. (e.g. TV) if (!mBatteryPresent) { removeTile = true; } } else if (id == R.id.home_settings) { if (!updateHomeSettingTiles(tile)) { removeTile = true; } } else if (id == R.id.user_settings) { boolean hasMultipleUsers = ((UserManager) getSystemService(Context.USER_SERVICE)) .getUserCount() > 1; if (!UserHandle.MU_ENABLED || !UserManager.supportsMultipleUsers() || Utils.isMonkeyRunning()) { removeTile = true; } } else if (id == R.id.print_settings) { boolean hasPrintingSupport = getPackageManager().hasSystemFeature( PackageManager.FEATURE_PRINTING); if (!hasPrintingSupport) { removeTile = true; } } else if (id == R.id.development_settings) { if (!showDev || um.hasUserRestriction( UserManager.DISALLOW_DEBUGGING_FEATURES)) { removeTile = true; } } if (UserHandle.MU_ENABLED && UserHandle.myUserId() != 0 && !ArrayUtils.contains(SETTINGS_FOR_RESTRICTED, id)) { removeTile = true; } if (removeTile && n < category.getTilesCount()) { category.removeTile(n); } n--; } } addExternalTiles(target); } private void addExternalTiles(List target) { Map, DashboardTile> addedCache = new ArrayMap, DashboardTile>(); UserManager userManager = UserManager.get(this); for (UserHandle user : userManager.getUserProfiles()) { addExternalTiles(target, user, addedCache); } } private void addExternalTiles(List target, UserHandle user, Map, DashboardTile> addedCache) { PackageManager pm = getPackageManager(); Intent intent = new Intent(EXTRA_SETTINGS_ACTION); List results = pm.queryIntentActivitiesAsUser(intent, PackageManager.GET_META_DATA, user.getIdentifier()); for (ResolveInfo resolved : results) { if (!resolved.system) { // Do not allow any app to add to settings, only system ones. continue; } ActivityInfo activityInfo = resolved.activityInfo; Bundle metaData = activityInfo.metaData; if ((metaData == null) || !metaData.containsKey(EXTRA_CATEGORY_KEY)) { Log.w(LOG_TAG, "Found " + resolved.activityInfo.name + " for action " + EXTRA_SETTINGS_ACTION + " missing metadata " + (metaData == null ? "" : EXTRA_CATEGORY_KEY)); continue; } String categoryKey = metaData.getString(EXTRA_CATEGORY_KEY); DashboardCategory category = getCategory(target, categoryKey); if (category == null) { Log.w(LOG_TAG, "Activity " + resolved.activityInfo.name + " has unknown " + "category key " + categoryKey); continue; } Pair key = new Pair(activityInfo.packageName, activityInfo.name); DashboardTile tile = addedCache.get(key); if (tile == null) { tile = new DashboardTile(); tile.intent = new Intent().setClassName( activityInfo.packageName, activityInfo.name); Utils.updateTileToSpecificActivityFromMetaDataOrRemove(this, tile); if (category.externalIndex == -1) { // If no location for external tiles has been specified for this category, // then just put them at the end. category.addTile(tile); } else { category.addTile(category.externalIndex, tile); } addedCache.put(key, tile); } tile.userHandle.add(user); } } private DashboardCategory getCategory(List target, String categoryKey) { for (DashboardCategory category : target) { if (categoryKey.equals(category.key)) { return category; } } return null; } private boolean updateHomeSettingTiles(DashboardTile tile) { // 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 { mHomeActivitiesCount = getHomeActivitiesCount(); if (mHomeActivitiesCount < 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 (tile.fragmentArguments == null) { tile.fragmentArguments = new Bundle(); } tile.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; 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; } @Override public boolean shouldUpRecreateTask(Intent targetIntent) { return super.shouldUpRecreateTask(new Intent(this, SettingsActivity.class)); } public static void requestHomeNotice() { sShowNoHomeNotice = true; } @Override public boolean onQueryTextSubmit(String query) { switchToSearchResultsFragmentIfNeeded(); mSearchQuery = query; return mSearchResultsFragment.onQueryTextSubmit(query); } @Override public boolean onQueryTextChange(String newText) { mSearchQuery = newText; if (mSearchResultsFragment == null) { return false; } return mSearchResultsFragment.onQueryTextChange(newText); } @Override public boolean onClose() { return false; } @Override public boolean onMenuItemActionExpand(MenuItem item) { if (item.getItemId() == mSearchMenuItem.getItemId()) { switchToSearchResultsFragmentIfNeeded(); } return true; } @Override public boolean onMenuItemActionCollapse(MenuItem item) { if (item.getItemId() == mSearchMenuItem.getItemId()) { if (mSearchMenuItemExpanded) { revertToInitialFragment(); } } return true; } private void switchToSearchResultsFragmentIfNeeded() { if (mSearchResultsFragment != null) { return; } Fragment current = getFragmentManager().findFragmentById(R.id.main_content); if (current != null && current instanceof SearchResultsSummary) { mSearchResultsFragment = (SearchResultsSummary) current; } else { mSearchResultsFragment = (SearchResultsSummary) switchToFragment( SearchResultsSummary.class.getName(), null, false, true, R.string.search_results_title, null, true); } mSearchResultsFragment.setSearchView(mSearchView); mSearchMenuItemExpanded = true; } public void needToRevertToInitialFragment() { mNeedToRevertToInitialFragment = true; } private void revertToInitialFragment() { mNeedToRevertToInitialFragment = false; mSearchResultsFragment = null; mSearchMenuItemExpanded = false; getFragmentManager().popBackStackImmediate(SettingsActivity.BACK_STACK_PREFS, FragmentManager.POP_BACK_STACK_INCLUSIVE); if (mSearchMenuItem != null) { mSearchMenuItem.collapseActionView(); } } public Intent getResultIntentData() { return mResultIntentData; } public void setResultIntentData(Intent resultIntentData) { mResultIntentData = resultIntentData; } public void setNfcProfileCallback(NFCProfileTagCallback callback) { mNfcProfileCallback = callback; } @Override protected void onNewIntent(Intent intent) { if (NfcAdapter.ACTION_TAG_DISCOVERED.equals(intent.getAction())) { Tag detectedTag = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG); if (mNfcProfileCallback != null) { mNfcProfileCallback.onTagRead(detectedTag); } return; } super.onNewIntent(intent); } }