File Doc Category Size Date Package
Activity.java API Doc Android 5.1 API 262712 Thu Mar 12 22:22:08 GMT 2015 android.app

Activity

java.lang.Object
- android.view.ContextThemeWrapper

public class Activity extends android.view.ContextThemeWrapper implements Window.OnWindowDismissedCallback, LayoutInflater.Factory2, Window.Callback, android.content.ComponentCallbacks2, android.view.View.OnCreateContextMenuListener, KeyEvent.Callback

An activity is a single, focused thing that the user can do. Almost all activities interact with the user, so the Activity class takes care of creating a window for you in which you can place your UI with {@link #setContentView}. While activities are often presented to the user as full-screen windows, they can also be used in other ways: as floating windows (via a theme with {@link android.R.attr#windowIsFloating} set) or embedded inside of another activity (using {@link ActivityGroup}). There are two methods almost all subclasses of Activity will implement:

{@link #onCreate} is where you initialize your activity. Most importantly, here you will usually call {@link #setContentView(int)} with a layout resource defining your UI, and using {@link #findViewById} to retrieve the widgets in that UI that you need to interact with programmatically.
{@link #onPause} is where you deal with the user leaving your activity. Most importantly, any changes made by the user should at this point be committed (usually to the {@link android.content.ContentProvider} holding the data).

To be of use with {@link android.content.Context#startActivity Context.startActivity()}, all activity classes must have a corresponding {@link android.R.styleable#AndroidManifestActivity <activity>} declaration in their package's AndroidManifest.xml.

Topics covered here:

Fragments
Activity Lifecycle
Configuration Changes
Starting Activities and Getting Results
Saving Persistent State
Permissions
Process Lifecycle

Developer Guides

The Activity class is an important part of an application's overall lifecycle, and the way activities are launched and put together is a fundamental part of the platform's application model. For a detailed perspective on the structure of an Android application and how activities behave, please read the Application Fundamentals and Tasks and Back Stack developer guides.

You can also find a detailed discussion about how to create activities in the Activities developer guide.

Fragments

Starting with {@link android.os.Build.VERSION_CODES#HONEYCOMB}, Activity implementations can make use of the {@link Fragment} class to better modularize their code, build more sophisticated user interfaces for larger screens, and help scale their application between small and large screens.

Activity Lifecycle

Activities in the system are managed as an activity stack. When a new activity is started, it is placed on the top of the stack and becomes the running activity -- the previous activity always remains below it in the stack, and will not come to the foreground again until the new activity exits.

An activity has essentially four states:

If an activity in the foreground of the screen (at the top of the stack), it is active or running.
If an activity has lost focus but is still visible (that is, a new non-full-sized or transparent activity has focus on top of your activity), it is paused. A paused activity is completely alive (it maintains all state and member information and remains attached to the window manager), but can be killed by the system in extreme low memory situations.
If an activity is completely obscured by another activity, it is stopped. It still retains all state and member information, however, it is no longer visible to the user so its window is hidden and it will often be killed by the system when memory is needed elsewhere.
If an activity is paused or stopped, the system can drop the activity from memory by either asking it to finish, or simply killing its process. When it is displayed again to the user, it must be completely restarted and restored to its previous state.

The following diagram shows the important state paths of an Activity. The square rectangles represent callback methods you can implement to perform operations when the Activity moves between states. The colored ovals are major states the Activity can be in.

State diagram for an Android Activity Lifecycle.

There are three key loops you may be interested in monitoring within your activity:

The entire lifetime of an activity happens between the first call to {@link android.app.Activity#onCreate} through to a single final call to {@link android.app.Activity#onDestroy}. An activity will do all setup of "global" state in onCreate(), and release all remaining resources in onDestroy(). For example, if it has a thread running in the background to download data from the network, it may create that thread in onCreate() and then stop the thread in onDestroy().
The visible lifetime of an activity happens between a call to {@link android.app.Activity#onStart} until a corresponding call to {@link android.app.Activity#onStop}. During this time the user can see the activity on-screen, though it may not be in the foreground and interacting with the user. Between these two methods you can maintain resources that are needed to show the activity to the user. For example, you can register a {@link android.content.BroadcastReceiver} in onStart() to monitor for changes that impact your UI, and unregister it in onStop() when the user no longer sees what you are displaying. The onStart() and onStop() methods can be called multiple times, as the activity becomes visible and hidden to the user.
The foreground lifetime of an activity happens between a call to {@link android.app.Activity#onResume} until a corresponding call to {@link android.app.Activity#onPause}. During this time the activity is in front of all other activities and interacting with the user. An activity can frequently go between the resumed and paused states -- for example when the device goes to sleep, when an activity result is delivered, when a new intent is delivered -- so the code in these methods should be fairly lightweight.

The entire lifecycle of an activity is defined by the following Activity methods. All of these are hooks that you can override to do appropriate work when the activity changes state. All activities will implement {@link android.app.Activity#onCreate} to do their initial setup; many will also implement {@link android.app.Activity#onPause} to commit changes to data and otherwise prepare to stop interacting with the user. You should always call up to your superclass when implementing these methods.

public class Activity extends ApplicationContext {
protected void onCreate(Bundle savedInstanceState);

protected void onStart();

protected void onRestart();

protected void onResume();

protected void onPause();

protected void onStop();

protected void onDestroy();
}

In general the movement through an activity's lifecycle looks like this:

Method			Description	Killable?	Next
{@link android.app.Activity#onCreate onCreate()}			Called when the activity is first created. This is where you should do all of your normal static set up: create views, bind data to lists, etc. This method also provides you with a Bundle containing the activity's previously frozen state, if there was one. Always followed by `onStart()`.	No	`onStart()`
	{@link android.app.Activity#onRestart onRestart()}		Called after your activity has been stopped, prior to it being started again. Always followed by `onStart()`	No	`onStart()`
	{@link android.app.Activity#onStart onStart()}		Called when the activity is becoming visible to the user. Followed by `onResume()` if the activity comes to the foreground, or `onStop()` if it becomes hidden.	No	`onResume()` or `onStop()`
		{@link android.app.Activity#onResume onResume()}	Called when the activity will start interacting with the user. At this point your activity is at the top of the activity stack, with user input going to it. Always followed by `onPause()`.	No	`onPause()`
		{@link android.app.Activity#onPause onPause()}	Called when the system is about to start resuming a previous activity. This is typically used to commit unsaved changes to persistent data, stop animations and other things that may be consuming CPU, etc. Implementations of this method must be very quick because the next activity will not be resumed until this method returns. Followed by either `onResume()` if the activity returns back to the front, or `onStop()` if it becomes invisible to the user.	Pre-{@link android.os.Build.VERSION_CODES#HONEYCOMB}	`onResume()` or `onStop()`
	{@link android.app.Activity#onStop onStop()}		Called when the activity is no longer visible to the user, because another activity has been resumed and is covering this one. This may happen either because a new activity is being started, an existing one is being brought in front of this one, or this one is being destroyed. Followed by either `onRestart()` if this activity is coming back to interact with the user, or `onDestroy()` if this activity is going away.	Yes	`onRestart()` or `onDestroy()`
{@link android.app.Activity#onDestroy onDestroy()}			The final call you receive before your activity is destroyed. This can happen either because the activity is finishing (someone called {@link Activity#finish} on it, or because the system is temporarily destroying this instance of the activity to save space. You can distinguish between these two scenarios with the {@link Activity#isFinishing} method.	Yes	nothing

Note the "Killable" column in the above table -- for those methods that are marked as being killable, after that method returns the process hosting the activity may killed by the system at any time without another line of its code being executed. Because of this, you should use the {@link #onPause} method to write any persistent data (such as user edits) to storage. In addition, the method {@link #onSaveInstanceState(Bundle)} is called before placing the activity in such a background state, allowing you to save away any dynamic instance state in your activity into the given Bundle, to be later received in {@link #onCreate} if the activity needs to be re-created. See the Process Lifecycle section for more information on how the lifecycle of a process is tied to the activities it is hosting. Note that it is important to save persistent data in {@link #onPause} instead of {@link #onSaveInstanceState} because the latter is not part of the lifecycle callbacks, so will not be called in every situation as described in its documentation.

Be aware that these semantics will change slightly between applications targeting platforms starting with {@link android.os.Build.VERSION_CODES#HONEYCOMB} vs. those targeting prior platforms. Starting with Honeycomb, an application is not in the killable state until its {@link #onStop} has returned. This impacts when {@link #onSaveInstanceState(Bundle)} may be called (it may be safely called after {@link #onPause()} and allows and application to safely wait until {@link #onStop()} to save persistent state.

For those methods that are not marked as being killable, the activity's process will not be killed by the system starting from the time the method is called and continuing after it returns. Thus an activity is in the killable state, for example, between after onPause() to the start of onResume().

Configuration Changes

If the configuration of the device (as defined by the {@link Configuration Resources.Configuration} class) changes, then anything displaying a user interface will need to update to match that configuration. Because Activity is the primary mechanism for interacting with the user, it includes special support for handling configuration changes.

Unless you specify otherwise, a configuration change (such as a change in screen orientation, language, input devices, etc) will cause your current activity to be destroyed, going through the normal activity lifecycle process of {@link #onPause}, {@link #onStop}, and {@link #onDestroy} as appropriate. If the activity had been in the foreground or visible to the user, once {@link #onDestroy} is called in that instance then a new instance of the activity will be created, with whatever savedInstanceState the previous instance had generated from {@link #onSaveInstanceState}.

This is done because any application resource, including layout files, can change based on any configuration value. Thus the only safe way to handle a configuration change is to re-retrieve all resources, including layouts, drawables, and strings. Because activities must already know how to save their state and re-create themselves from that state, this is a convenient way to have an activity restart itself with a new configuration.

In some special cases, you may want to bypass restarting of your activity based on one or more types of configuration changes. This is done with the {@link android.R.attr#configChanges android:configChanges} attribute in its manifest. For any types of configuration changes you say that you handle there, you will receive a call to your current activity's {@link #onConfigurationChanged} method instead of being restarted. If a configuration change involves any that you do not handle, however, the activity will still be restarted and {@link #onConfigurationChanged} will not be called.

Starting Activities and Getting Results

The {@link android.app.Activity#startActivity} method is used to start a new activity, which will be placed at the top of the activity stack. It takes a single argument, an {@link android.content.Intent Intent}, which describes the activity to be executed.

Sometimes you want to get a result back from an activity when it ends. For example, you may start an activity that lets the user pick a person in a list of contacts; when it ends, it returns the person that was selected. To do this, you call the {@link android.app.Activity#startActivityForResult(Intent, int)} version with a second integer parameter identifying the call. The result will come back through your {@link android.app.Activity#onActivityResult} method.

When an activity exits, it can call {@link android.app.Activity#setResult(int)} to return data back to its parent. It must always supply a result code, which can be the standard results RESULT_CANCELED, RESULT_OK, or any custom values starting at RESULT_FIRST_USER. In addition, it can optionally return back an Intent containing any additional data it wants. All of this information appears back on the parent's Activity.onActivityResult(), along with the integer identifier it originally supplied.

If a child activity fails for any reason (such as crashing), the parent activity will receive a result with the code RESULT_CANCELED.

public class MyActivity extends Activity {
...

static final int PICK_CONTACT_REQUEST = 0;

public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) {
// When the user center presses, let them pick a contact.
startActivityForResult(
new Intent(Intent.ACTION_PICK,
new Uri("content://contacts")),
PICK_CONTACT_REQUEST);
return true;
}
return false;
}

protected void onActivityResult(int requestCode, int resultCode,
Intent data) {
if (requestCode == PICK_CONTACT_REQUEST) {
if (resultCode == RESULT_OK) {
// A contact was picked. Here we will just display it
// to the user.
startActivity(new Intent(Intent.ACTION_VIEW, data));
}
}
}
}

Saving Persistent State

There are generally two kinds of persistent state than an activity will deal with: shared document-like data (typically stored in a SQLite database using a {@linkplain android.content.ContentProvider content provider}) and internal state such as user preferences.

For content provider data, we suggest that activities use a "edit in place" user model. That is, any edits a user makes are effectively made immediately without requiring an additional confirmation step. Supporting this model is generally a simple matter of following two rules:

When creating a new document, the backing database entry or file for it is created immediately. For example, if the user chooses to write a new e-mail, a new entry for that e-mail is created as soon as they start entering data, so that if they go to any other activity after that point this e-mail will now appear in the list of drafts.
When an activity's onPause() method is called, it should commit to the backing content provider or file any changes the user has made. This ensures that those changes will be seen by any other activity that is about to run. You will probably want to commit your data even more aggressively at key times during your activity's lifecycle: for example before starting a new activity, before finishing your own activity, when the user switches between input fields, etc.

This model is designed to prevent data loss when a user is navigating between activities, and allows the system to safely kill an activity (because system resources are needed somewhere else) at any time after it has been paused. Note this implies that the user pressing BACK from your activity does not mean "cancel" -- it means to leave the activity with its current contents saved away. Canceling edits in an activity must be provided through some other mechanism, such as an explicit "revert" or "undo" option.

See the {@linkplain android.content.ContentProvider content package} for more information about content providers. These are a key aspect of how different activities invoke and propagate data between themselves.

The Activity class also provides an API for managing internal persistent state associated with an activity. This can be used, for example, to remember the user's preferred initial display in a calendar (day view or week view) or the user's default home page in a web browser.

Activity persistent state is managed with the method {@link #getPreferences}, allowing you to retrieve and modify a set of name/value pairs associated with the activity. To use preferences that are shared across multiple application components (activities, receivers, services, providers), you can use the underlying {@link Context#getSharedPreferences Context.getSharedPreferences()} method to retrieve a preferences object stored under a specific name. (Note that it is not possible to share settings data across application packages -- for that you will need a content provider.)

Here is an excerpt from a calendar activity that stores the user's preferred view mode in its persistent settings:

public class CalendarActivity extends Activity {
...

static final int DAY_VIEW_MODE = 0;
static final int WEEK_VIEW_MODE = 1;

private SharedPreferences mPrefs;
private int mCurViewMode;

protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);

SharedPreferences mPrefs = getSharedPreferences();
mCurViewMode = mPrefs.getInt("view_mode", DAY_VIEW_MODE);
}

protected void onPause() {
super.onPause();

SharedPreferences.Editor ed = mPrefs.edit();
ed.putInt("view_mode", mCurViewMode);
ed.commit();
}
}

Permissions

The ability to start a particular Activity can be enforced when it is declared in its manifest's {@link android.R.styleable#AndroidManifestActivity <activity>} tag. By doing so, other applications will need to declare a corresponding {@link android.R.styleable#AndroidManifestUsesPermission <uses-permission>} element in their own manifest to be able to start that activity.

When starting an Activity you can set {@link Intent#FLAG_GRANT_READ_URI_PERMISSION Intent.FLAG_GRANT_READ_URI_PERMISSION} and/or {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION Intent.FLAG_GRANT_WRITE_URI_PERMISSION} on the Intent. This will grant the Activity access to the specific URIs in the Intent. Access will remain until the Activity has finished (it will remain across the hosting process being killed and other temporary destruction). As of {@link android.os.Build.VERSION_CODES#GINGERBREAD}, if the Activity was already created and a new Intent is being delivered to {@link #onNewIntent(Intent)}, any newly granted URI permissions will be added to the existing ones it holds.

See the Security and Permissions document for more information on permissions and security in general.

Process Lifecycle

The Android system attempts to keep application process around for as long as possible, but eventually will need to remove old processes when memory runs low. As described in Activity Lifecycle, the decision about which process to remove is intimately tied to the state of the user's interaction with it. In general, there are four states a process can be in based on the activities running in it, listed here in order of importance. The system will kill less important processes (the last ones) before it resorts to killing more important processes (the first ones).

The foreground activity (the activity at the top of the screen that the user is currently interacting with) is considered the most important. Its process will only be killed as a last resort, if it uses more memory than is available on the device. Generally at this point the device has reached a memory paging state, so this is required in order to keep the user interface responsive.
A visible activity (an activity that is visible to the user but not in the foreground, such as one sitting behind a foreground dialog) is considered extremely important and will not be killed unless that is required to keep the foreground activity running.
A background activity (an activity that is not visible to the user and has been paused) is no longer critical, so the system may safely kill its process to reclaim memory for other foreground or visible processes. If its process needs to be killed, when the user navigates back to the activity (making it visible on the screen again), its {@link #onCreate} method will be called with the savedInstanceState it had previously supplied in {@link #onSaveInstanceState} so that it can restart itself in the same state as the user last left it.
An empty process is one hosting no activities or other application components (such as {@link Service} or {@link android.content.BroadcastReceiver} classes). These are killed very quickly by the system as memory becomes low. For this reason, any background operation you do outside of an activity must be executed in the context of an activity BroadcastReceiver or Service to ensure that the system knows it needs to keep your process around.

Sometimes an Activity may need to do a long-running operation that exists independently of the activity lifecycle itself. An example may be a camera application that allows you to upload a picture to a web site. The upload may take a long time, and the application should allow the user to leave the application will it is executing. To accomplish this, your Activity should start a {@link Service} in which the upload takes place. This allows the system to properly prioritize your process (considering it to be more important than other non-visible applications) for the duration of the upload, independent of whether the original activity is paused, stopped, or finished.

Fields Summary
private static final String
TAG
private static final boolean
DEBUG_LIFECYCLE
public static final int
RESULT_CANCELED
Standard activity result: operation canceled.
public static final int
RESULT_OK
Standard activity result: operation succeeded.
public static final int
RESULT_FIRST_USER
Start of user-defined activity results.
static final String
FRAGMENTS_TAG
private static final String
WINDOW_HIERARCHY_TAG
private static final String
SAVED_DIALOG_IDS_KEY
private static final String
SAVED_DIALOGS_TAG
private static final String
SAVED_DIALOG_KEY_PREFIX
private static final String
SAVED_DIALOG_ARGS_KEY_PREFIX
private android.util.SparseArray
mManagedDialogs
private Instrumentation
mInstrumentation
private android.os.IBinder
mToken
private int
mIdent
String
mEmbeddedID
private Application
mApplication
android.content.Intent
mIntent
String
mReferrer
private android.content.ComponentName
mComponent
android.content.pm.ActivityInfo
mActivityInfo
ActivityThread
mMainThread
Activity
mParent
boolean
mCalled
boolean
mCheckedForLoaderManager
boolean
mLoadersStarted
boolean
mResumed
private boolean
mStopped
boolean
mFinished
boolean
mStartedActivity
private boolean
mDestroyed
private boolean
mDoReportFullyDrawn
boolean
mTemporaryPause
true if the activity is going through a transient pause
boolean
mChangingConfigurations
true if the activity is being destroyed in order to recreate it with a new configuration
int
mConfigChangeFlags
android.content.res.Configuration
mCurrentConfig
private SearchManager
mSearchManager
private android.view.MenuInflater
mMenuInflater
NonConfigurationInstances
mLastNonConfigurationInstances
private android.view.Window
mWindow
private android.view.WindowManager
mWindowManager
android.view.View
mDecor
boolean
mWindowAdded
boolean
mVisibleFromServer
boolean
mVisibleFromClient
ActionBar
mActionBar
private boolean
mEnableDefaultActionBarUp
private VoiceInteractor
mVoiceInteractor
private CharSequence
mTitle
private int
mTitleColor
final FragmentManagerImpl
mFragments
final FragmentContainer
mContainer
boolean
mVisibleBehind
android.util.ArrayMap
mAllLoaderManagers
LoaderManagerImpl
mLoaderManager
private final ArrayList
mManagedCursors
int
mResultCode
android.content.Intent
mResultData
private TranslucentConversionListener
mTranslucentCallback
private boolean
mChangeCanvasToTranslucent
private boolean
mTitleReady
private int
mDefaultKeyMode
private android.text.SpannableStringBuilder
mDefaultKeySsb
protected static final int[]
FOCUSED_STATE_SET
private final Object
mInstanceTracker
private Thread
mUiThread
final android.os.Handler
mHandler
ActivityTransitionState
mActivityTransitionState
SharedElementCallback
mEnterTransitionListener
SharedElementCallback
mExitTransitionListener
public static final int
DEFAULT_KEYS_DISABLE
Use with {@link #setDefaultKeyMode} to turn off default handling of keys.
public static final int
DEFAULT_KEYS_DIALER
Use with {@link #setDefaultKeyMode} to launch the dialer during default key handling.
public static final int
DEFAULT_KEYS_SHORTCUT
Use with {@link #setDefaultKeyMode} to execute a menu shortcut in default key handling.
That is, the user does not need to hold down the menu key to execute menu shortcuts.
public static final int
DEFAULT_KEYS_SEARCH_LOCAL
Use with {@link #setDefaultKeyMode} to specify that unhandled keystrokes will start an application-defined search. (If the application or activity does not actually define a search, the the keys will be ignored.)
See {@link android.app.SearchManager android.app.SearchManager} for more details.
public static final int
DEFAULT_KEYS_SEARCH_GLOBAL
Use with {@link #setDefaultKeyMode} to specify that unhandled keystrokes will start a global search (typically web search, but some platforms may define alternate methods for global search)
See {@link android.app.SearchManager android.app.SearchManager} for more details.
Constructors Summary
Methods Summary
public void addContentView(android.view.View view, android.view.ViewGroup.LayoutParams params)
Add an additional content view to the activity. Added after any existing ones in the activity -- existing views are NOT removed.
param
view The desired content to display.
param
params Layout parameters for the view.
getWindow().addContentView(view, params); initWindowDecorActionBar();
final void attach(android.content.Context context, ActivityThread aThread, Instrumentation instr, android.os.IBinder token, int ident, Application application, android.content.Intent intent, android.content.pm.ActivityInfo info, java.lang.CharSequence title, android.app.Activity parent, java.lang.String id, android.app.Activity$NonConfigurationInstances lastNonConfigurationInstances, android.content.res.Configuration config, java.lang.String referrer, com.android.internal.app.IVoiceInteractor voiceInteractor)
attachBaseContext(context); mFragments.attachActivity(this, mContainer, null); mWindow = PolicyManager.makeNewWindow(this); mWindow.setCallback(this); mWindow.setOnWindowDismissedCallback(this); mWindow.getLayoutInflater().setPrivateFactory(this); if (info.softInputMode != WindowManager.LayoutParams.SOFT_INPUT_STATE_UNSPECIFIED) { mWindow.setSoftInputMode(info.softInputMode); } if (info.uiOptions != 0) { mWindow.setUiOptions(info.uiOptions); } mUiThread = Thread.currentThread(); mMainThread = aThread; mInstrumentation = instr; mToken = token; mIdent = ident; mApplication = application; mIntent = intent; mReferrer = referrer; mComponent = intent.getComponent(); mActivityInfo = info; mTitle = title; mParent = parent; mEmbeddedID = id; mLastNonConfigurationInstances = lastNonConfigurationInstances; if (voiceInteractor != null) { if (lastNonConfigurationInstances != null) { mVoiceInteractor = lastNonConfigurationInstances.voiceInteractor; } else { mVoiceInteractor = new VoiceInteractor(voiceInteractor, this, this, Looper.myLooper()); } } mWindow.setWindowManager( (WindowManager)context.getSystemService(Context.WINDOW_SERVICE), mToken, mComponent.flattenToString(), (info.flags & ActivityInfo.FLAG_HARDWARE_ACCELERATED) != 0); if (mParent != null) { mWindow.setContainer(mParent.getWindow()); } mWindowManager = mWindow.getWindowManager(); mCurrentConfig = config;
public void closeContextMenu()
Programmatically closes the most recently opened context menu, if showing.
if (mWindow.hasFeature(Window.FEATURE_CONTEXT_MENU)) { mWindow.closePanel(Window.FEATURE_CONTEXT_MENU); }
public void closeOptionsMenu()
Progammatically closes the options menu. If the options menu is already closed, this method does nothing.
if (mWindow.hasFeature(Window.FEATURE_OPTIONS_PANEL)) { mWindow.closePanel(Window.FEATURE_OPTIONS_PANEL); }
public void convertFromTranslucent()
Convert a translucent themed Activity {@link android.R.attr#windowIsTranslucent} to a fullscreen opaque Activity.
Call this whenever the background of a translucent Activity has changed to become opaque. Doing so will allow the {@link android.view.Surface} of the Activity behind to be released.
This call has no effect on non-translucent activities or on activities with the {@link android.R.attr#windowIsFloating} attribute.
see
#convertToTranslucent(android.app.Activity.TranslucentConversionListener, ActivityOptions)
see
TranslucentConversionListener
hide
try { mTranslucentCallback = null; if (ActivityManagerNative.getDefault().convertFromTranslucent(mToken)) { WindowManagerGlobal.getInstance().changeCanvasOpacity(mToken, true); } } catch (RemoteException e) { // pass }
public boolean convertToTranslucent(android.app.Activity$TranslucentConversionListener callback, ActivityOptions options)
Convert a translucent themed Activity {@link android.R.attr#windowIsTranslucent} back from opaque to translucent following a call to {@link #convertFromTranslucent()}.
Calling this allows the Activity behind this one to be seen again. Once all such Activities have been redrawn {@link TranslucentConversionListener#onTranslucentConversionComplete} will be called indicating that it is safe to make this activity translucent again. Until {@link TranslucentConversionListener#onTranslucentConversionComplete} is called the image behind the frontmost Activity will be indeterminate.
This call has no effect on non-translucent activities or on activities with the {@link android.R.attr#windowIsFloating} attribute.
param
callback the method to call when all visible Activities behind this one have been drawn and it is safe to make this Activity translucent again.
param
options activity options delivered to the activity below this one. The options are retrieved using {@link #getActivityOptions}.
return
true if Window was opaque and will become translucent or false if window was translucent and no change needed to be made.
see
#convertFromTranslucent()
see
TranslucentConversionListener
hide
boolean drawComplete; try { mTranslucentCallback = callback; mChangeCanvasToTranslucent = ActivityManagerNative.getDefault().convertToTranslucent(mToken, options); WindowManagerGlobal.getInstance().changeCanvasOpacity(mToken, false); drawComplete = true; } catch (RemoteException e) { // Make callback return as though it timed out. mChangeCanvasToTranslucent = false; drawComplete = false; } if (!mChangeCanvasToTranslucent && mTranslucentCallback != null) { // Window is already translucent. mTranslucentCallback.onTranslucentConversionComplete(drawComplete); } return mChangeCanvasToTranslucent;
private Dialog createDialog(java.lang.Integer dialogId, android.os.Bundle state, android.os.Bundle args)
final Dialog dialog = onCreateDialog(dialogId, args); if (dialog == null) { return null; } dialog.dispatchOnCreate(state); return dialog;
public PendingIntent createPendingResult(int requestCode, android.content.Intent data, int flags)
Create a new PendingIntent object which you can hand to others for them to use to send result data back to your {@link #onActivityResult} callback. The created object will be either one-shot (becoming invalid after a result is sent back) or multiple (allowing any number of results to be sent through it).
param
requestCode Private request code for the sender that will be associated with the result data when it is returned. The sender can not modify this value, allowing you to identify incoming results.
param
data Default data to supply in the result, which may be modified by the sender.
param
flags May be {@link PendingIntent#FLAG_ONE_SHOT PendingIntent.FLAG_ONE_SHOT}, {@link PendingIntent#FLAG_NO_CREATE PendingIntent.FLAG_NO_CREATE}, {@link PendingIntent#FLAG_CANCEL_CURRENT PendingIntent.FLAG_CANCEL_CURRENT}, {@link PendingIntent#FLAG_UPDATE_CURRENT PendingIntent.FLAG_UPDATE_CURRENT}, or any of the flags as supported by {@link Intent#fillIn Intent.fillIn()} to control which unspecified parts of the intent that can be supplied when the actual send happens.
return
Returns an existing or new PendingIntent matching the given parameters. May return null only if {@link PendingIntent#FLAG_NO_CREATE PendingIntent.FLAG_NO_CREATE} has been supplied.
see
PendingIntent
String packageName = getPackageName(); try { data.prepareToLeaveProcess(); IIntentSender target = ActivityManagerNative.getDefault().getIntentSender( ActivityManager.INTENT_SENDER_ACTIVITY_RESULT, packageName, mParent == null ? mToken : mParent.mToken, mEmbeddedID, requestCode, new Intent[] { data }, null, flags, null, UserHandle.myUserId()); return target != null ? new PendingIntent(target) : null; } catch (RemoteException e) { // Empty } return null;
public final void dismissDialog(int id)
Dismiss a dialog that was previously shown via {@link #showDialog(int)}.
param
id The id of the managed dialog.
throws
IllegalArgumentException if the id was not previously shown via {@link #showDialog(int)}.
see
#onCreateDialog(int, Bundle)
see
#onPrepareDialog(int, Dialog, Bundle)
see
#showDialog(int)
see
#removeDialog(int)
deprecated
Use the new {@link DialogFragment} class with {@link FragmentManager} instead; this is also available on older platforms through the Android compatibility package.
if (mManagedDialogs == null) { throw missingDialog(id); } final ManagedDialog md = mManagedDialogs.get(id); if (md == null) { throw missingDialog(id); } md.mDialog.dismiss();
void dispatchActivityResult(java.lang.String who, int requestCode, int resultCode, android.content.Intent data)
if (false) Log.v( TAG, "Dispatching result: who=" + who + ", reqCode=" + requestCode + ", resCode=" + resultCode + ", data=" + data); mFragments.noteStateNotSaved(); if (who == null) { onActivityResult(requestCode, resultCode, data); } else { Fragment frag = mFragments.findFragmentByWho(who); if (frag != null) { frag.onActivityResult(requestCode, resultCode, data); } }
public void dispatchEnterAnimationComplete()
hide
onEnterAnimationComplete(); if (getWindow() != null && getWindow().getDecorView() != null) { getWindow().getDecorView().getViewTreeObserver().dispatchOnEnterAnimationComplete(); }
public boolean dispatchGenericMotionEvent(android.view.MotionEvent ev)
Called to process generic motion events. You can override this to intercept all generic motion events before they are dispatched to the window. Be sure to call this implementation for generic motion events that should be handled normally.
param
ev The generic motion event.
return
boolean Return true if this event was consumed.
onUserInteraction(); if (getWindow().superDispatchGenericMotionEvent(ev)) { return true; } return onGenericMotionEvent(ev);
public boolean dispatchKeyEvent(android.view.KeyEvent event)
Called to process key events. You can override this to intercept all key events before they are dispatched to the window. Be sure to call this implementation for key events that should be handled normally.
param
event The key event.
return
boolean Return true if this event was consumed.
onUserInteraction(); // Let action bars open menus in response to the menu key prioritized over // the window handling it if (event.getKeyCode() == KeyEvent.KEYCODE_MENU && mActionBar != null && mActionBar.onMenuKeyEvent(event)) { return true; } Window win = getWindow(); if (win.superDispatchKeyEvent(event)) { return true; } View decor = mDecor; if (decor == null) decor = win.getDecorView(); return event.dispatch(this, decor != null ? decor.getKeyDispatcherState() : null, this);
public boolean dispatchKeyShortcutEvent(android.view.KeyEvent event)
Called to process a key shortcut event. You can override this to intercept all key shortcut events before they are dispatched to the window. Be sure to call this implementation for key shortcut events that should be handled normally.
param
event The key shortcut event.
return
True if this event was consumed.
onUserInteraction(); if (getWindow().superDispatchKeyShortcutEvent(event)) { return true; } return onKeyShortcut(event.getKeyCode(), event);
public boolean dispatchPopulateAccessibilityEvent(android.view.accessibility.AccessibilityEvent event)
event.setClassName(getClass().getName()); event.setPackageName(getPackageName()); LayoutParams params = getWindow().getAttributes(); boolean isFullScreen = (params.width == LayoutParams.MATCH_PARENT) && (params.height == LayoutParams.MATCH_PARENT); event.setFullScreen(isFullScreen); CharSequence title = getTitle(); if (!TextUtils.isEmpty(title)) { event.getText().add(title); } return true;
public boolean dispatchTouchEvent(android.view.MotionEvent ev)
Called to process touch screen events. You can override this to intercept all touch screen events before they are dispatched to the window. Be sure to call this implementation for touch screen events that should be handled normally.
param
ev The touch screen event.
return
boolean Return true if this event was consumed.
if (ev.getAction() == MotionEvent.ACTION_DOWN) { onUserInteraction(); } if (getWindow().superDispatchTouchEvent(ev)) { return true; } return onTouchEvent(ev);
public boolean dispatchTrackballEvent(android.view.MotionEvent ev)
Called to process trackball events. You can override this to intercept all trackball events before they are dispatched to the window. Be sure to call this implementation for trackball events that should be handled normally.
param
ev The trackball event.
return
boolean Return true if this event was consumed.
onUserInteraction(); if (getWindow().superDispatchTrackballEvent(ev)) { return true; } return onTrackballEvent(ev);
public void dump(java.lang.String prefix, java.io.FileDescriptor fd, java.io.PrintWriter writer, java.lang.String[] args)
Print the Activity's state into the given stream. This gets invoked if you run "adb shell dumpsys activity <activity_component_name>".
param
prefix Desired prefix to prepend at each line of output.
param
fd The raw file descriptor that the dump is being sent to.
param
writer The PrintWriter to which you should dump your state. This will be closed for you after you return.
param
args additional arguments to the dump request.
dumpInner(prefix, fd, writer, args);
void dumpInner(java.lang.String prefix, java.io.FileDescriptor fd, java.io.PrintWriter writer, java.lang.String[] args)
writer.print(prefix); writer.print("Local Activity "); writer.print(Integer.toHexString(System.identityHashCode(this))); writer.println(" State:"); String innerPrefix = prefix + " "; writer.print(innerPrefix); writer.print("mResumed="); writer.print(mResumed); writer.print(" mStopped="); writer.print(mStopped); writer.print(" mFinished="); writer.println(mFinished); writer.print(innerPrefix); writer.print("mLoadersStarted="); writer.println(mLoadersStarted); writer.print(innerPrefix); writer.print("mChangingConfigurations="); writer.println(mChangingConfigurations); writer.print(innerPrefix); writer.print("mCurrentConfig="); writer.println(mCurrentConfig); if (mLoaderManager != null) { writer.print(prefix); writer.print("Loader Manager "); writer.print(Integer.toHexString(System.identityHashCode(mLoaderManager))); writer.println(":"); mLoaderManager.dump(prefix + " ", fd, writer, args); } mFragments.dump(prefix, fd, writer, args); if (getWindow() != null && getWindow().peekDecorView() != null && getWindow().peekDecorView().getViewRootImpl() != null) { getWindow().peekDecorView().getViewRootImpl().dump(prefix, fd, writer, args); } mHandler.getLooper().dump(new PrintWriterPrinter(writer), prefix);
private void ensureSearchManager()
if (mSearchManager != null) { return; } mSearchManager = new SearchManager(this, null);
public android.view.View findViewById(int id)
Finds a view that was identified by the id attribute from the XML that was processed in {@link #onCreate}.
return
The view if found or null otherwise.
return getWindow().findViewById(id);
private void finish(boolean finishTask)
Finishes the current activity and specifies whether to remove the task associated with this activity.
if (mParent == null) { int resultCode; Intent resultData; synchronized (this) { resultCode = mResultCode; resultData = mResultData; } if (false) Log.v(TAG, "Finishing self: token=" + mToken); try { if (resultData != null) { resultData.prepareToLeaveProcess(); } if (ActivityManagerNative.getDefault() .finishActivity(mToken, resultCode, resultData, finishTask)) { mFinished = true; } } catch (RemoteException e) { // Empty } } else { mParent.finishFromChild(this); }
public void finish()
Call this when your activity is done and should be closed. The ActivityResult is propagated back to whoever launched you via onActivityResult().
finish(false);
public void finishActivity(int requestCode)
Force finish another activity that you had previously started with {@link #startActivityForResult}.
param
requestCode The request code of the activity that you had given to startActivityForResult(). If there are multiple activities started with this request code, they will all be finished.
if (mParent == null) { try { ActivityManagerNative.getDefault() .finishSubActivity(mToken, mEmbeddedID, requestCode); } catch (RemoteException e) { // Empty } } else { mParent.finishActivityFromChild(this, requestCode); }
public void finishActivityFromChild(android.app.Activity child, int requestCode)
This is called when a child activity of this one calls its finishActivity().
param
child The activity making the call.
param
requestCode Request code that had been used to start the activity.
try { ActivityManagerNative.getDefault() .finishSubActivity(mToken, child.mEmbeddedID, requestCode); } catch (RemoteException e) { // Empty }
public void finishAffinity()
Finish this activity as well as all activities immediately below it in the current task that have the same affinity. This is typically used when an application can be launched on to another task (such as from an ACTION_VIEW of a content type it understands) and the user has used the up navigation to switch out of the current task and in to its own task. In this case, if the user has navigated down into any other activities of the second application, all of those should be removed from the original task as part of the task switch.
Note that this finish does not allow you to deliver results to the previous activity, and an exception will be thrown if you are trying to do so.
if (mParent != null) { throw new IllegalStateException("Can not be called from an embedded activity"); } if (mResultCode != RESULT_CANCELED || mResultData != null) { throw new IllegalStateException("Can not be called to deliver a result"); } try { if (ActivityManagerNative.getDefault().finishActivityAffinity(mToken)) { mFinished = true; } } catch (RemoteException e) { // Empty }
public void finishAfterTransition()
Reverses the Activity Scene entry Transition and triggers the calling Activity to reverse its exit Transition. When the exit Transition completes, {@link #finish()} is called. If no entry Transition was used, finish() is called immediately and the Activity exit Transition is run.
see
android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, android.util.Pair[])
if (!mActivityTransitionState.startExitBackTransition(this)) { finish(); }
public void finishAndRemoveTask()
Call this when your activity is done and should be closed and the task should be completely removed as a part of finishing the Activity.
finish(true);
public void finishFromChild(android.app.Activity child)
This is called when a child activity of this one calls its {@link #finish} method. The default implementation simply calls finish() on this activity (the parent), finishing the entire group.
param
child The activity making the call.
see
#finish
finish();
public ActionBar getActionBar()
Retrieve a reference to this activity's ActionBar.
return
The Activity's ActionBar, or null if it does not have one.
initWindowDecorActionBar(); return mActionBar;
ActivityOptions getActivityOptions()
Retrieve the ActivityOptions passed in from the launching activity or passed back from an activity launched by this activity in its call to {@link #convertToTranslucent(TranslucentConversionListener, ActivityOptions)}
return
The ActivityOptions passed to {@link #convertToTranslucent}.
hide
try { return ActivityManagerNative.getDefault().getActivityOptions(mToken); } catch (RemoteException e) { } return null;
public final android.os.IBinder getActivityToken()
hide
return mParent != null ? mParent.getActivityToken() : mToken;
public final Application getApplication()
Return the application that owns this activity.
return mApplication;
public android.content.ComponentName getCallingActivity()
Return the name of the activity that invoked this activity. This is who the data in {@link #setResult setResult()} will be sent to. You can use this information to validate that the recipient is allowed to receive the data.
Note: if the calling activity is not expecting a result (that is it did not use the {@link #startActivityForResult} form that includes a request code), then the calling package will be null.
return
The ComponentName of the activity that will receive your reply, or null if none.
try { return ActivityManagerNative.getDefault().getCallingActivity(mToken); } catch (RemoteException e) { return null; }
public java.lang.String getCallingPackage()
Return the name of the package that invoked this activity. This is who the data in {@link #setResult setResult()} will be sent to. You can use this information to validate that the recipient is allowed to receive the data.
Note: if the calling activity is not expecting a result (that is it did not use the {@link #startActivityForResult} form that includes a request code), then the calling package will be null.

Note: prior to {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR2}, the result from this method was unstable. If the process hosting the calling package was no longer running, it would return null instead of the proper package name. You can use {@link #getCallingActivity()} and retrieve the package name from that instead.
return
The package of the activity that will receive your reply, or null if none.
try { return ActivityManagerNative.getDefault().getCallingPackage(mToken); } catch (RemoteException e) { return null; }
public int getChangingConfigurations()
If this activity is being destroyed because it can not handle a configuration parameter being changed (and thus its {@link #onConfigurationChanged(Configuration)} method is not being called), then you can use this method to discover the set of changes that have occurred while in the process of being destroyed. Note that there is no guarantee that these will be accurate (other changes could have happened at any time), so you should only use this as an optimization hint.
return
Returns a bit field of the configuration parameters that are changing, as defined by the {@link android.content.res.Configuration} class.
return mConfigChangeFlags;
public android.content.ComponentName getComponentName()
Returns complete component name of this activity.
return
Returns the complete component name for this activity
return mComponent;
public android.transition.Scene getContentScene()
Retrieve the {@link Scene} representing this window's current content. Requires {@link Window#FEATURE_CONTENT_TRANSITIONS}.
This method will return null if the current content is not represented by a Scene.
return
Current Scene being shown or null
return getWindow().getContentScene();
public android.transition.TransitionManager getContentTransitionManager()
Retrieve the {@link TransitionManager} responsible for default transitions in this window. Requires {@link Window#FEATURE_CONTENT_TRANSITIONS}.
This method will return non-null after content has been initialized (e.g. by using {@link #setContentView}) if {@link Window#FEATURE_CONTENT_TRANSITIONS} has been granted.
return
This window's content TransitionManager or null if none is set.
return getWindow().getTransitionManager();
public android.view.View getCurrentFocus()
Calls {@link android.view.Window#getCurrentFocus} on the Window of this Activity to return the currently focused view.
return
View The current View with focus or null.
see
#getWindow
see
android.view.Window#getCurrentFocus
return mWindow != null ? mWindow.getCurrentFocus() : null;
public FragmentManager getFragmentManager()
Return the FragmentManager for interacting with fragments associated with this activity.
return mFragments;
public android.content.Intent getIntent()
Return the intent that started this activity.
return mIntent;
java.util.HashMap getLastNonConfigurationChildInstances()
Retrieve the non-configuration instance data that was previously returned by {@link #onRetainNonConfigurationChildInstances()}. This will be available from the initial {@link #onCreate} and {@link #onStart} calls to the new instance, allowing you to extract any useful dynamic state from the previous instance.
Note that the data you retrieve here should only be used as an optimization for handling configuration changes. You should always be able to handle getting a null pointer back, and an activity must still be able to restore itself to its previous state (through the normal {@link #onSaveInstanceState(Bundle)} mechanism) even if this function returns null.
return
Returns the object previously returned by {@link #onRetainNonConfigurationChildInstances()}
return mLastNonConfigurationInstances != null ? mLastNonConfigurationInstances.children : null;
public java.lang.Object getLastNonConfigurationInstance()
Retrieve the non-configuration instance data that was previously returned by {@link #onRetainNonConfigurationInstance()}. This will be available from the initial {@link #onCreate} and {@link #onStart} calls to the new instance, allowing you to extract any useful dynamic state from the previous instance.
Note that the data you retrieve here should only be used as an optimization for handling configuration changes. You should always be able to handle getting a null pointer back, and an activity must still be able to restore itself to its previous state (through the normal {@link #onSaveInstanceState(Bundle)} mechanism) even if this function returns null.
return
Returns the object previously returned by {@link #onRetainNonConfigurationInstance()}.
deprecated
Use the new {@link Fragment} API {@link Fragment#setRetainInstance(boolean)} instead; this is also available on older platforms through the Android compatibility package.
return mLastNonConfigurationInstances != null ? mLastNonConfigurationInstances.activity : null;
public android.view.LayoutInflater getLayoutInflater()
Convenience for calling {@link android.view.Window#getLayoutInflater}.
return getWindow().getLayoutInflater();
public LoaderManager getLoaderManager()
Return the LoaderManager for this activity, creating it if needed.
if (mLoaderManager != null) { return mLoaderManager; } mCheckedForLoaderManager = true; mLoaderManager = getLoaderManager("(root)", mLoadersStarted, true); return mLoaderManager;
LoaderManagerImpl getLoaderManager(java.lang.String who, boolean started, boolean create)
if (mAllLoaderManagers == null) { mAllLoaderManagers = new ArrayMap<String, LoaderManagerImpl>(); } LoaderManagerImpl lm = mAllLoaderManagers.get(who); if (lm == null) { if (create) { lm = new LoaderManagerImpl(who, this, started); mAllLoaderManagers.put(who, lm); } } else { lm.updateActivity(this); } return lm;
public java.lang.String getLocalClassName()
Returns class name for this activity with the package prefix removed. This is the default name used to read and write settings.
return
The local class name.
final String pkg = getPackageName(); final String cls = mComponent.getClassName(); int packageLen = pkg.length(); if (!cls.startsWith(pkg) || cls.length() <= packageLen || cls.charAt(packageLen) != '.") { return cls; } return cls.substring(packageLen+1);
public final android.media.session.MediaController getMediaController()
Gets the controller which should be receiving media key and volume events while this activity is in the foreground.
return
The controller which should receive events.
see
#setMediaController(android.media.session.MediaController)
return getWindow().getMediaController();
public android.view.MenuInflater getMenuInflater()
Returns a {@link MenuInflater} with this context.
// Make sure that action views can get an appropriate theme. if (mMenuInflater == null) { initWindowDecorActionBar(); if (mActionBar != null) { mMenuInflater = new MenuInflater(mActionBar.getThemedContext(), this); } else { mMenuInflater = new MenuInflater(this); } } return mMenuInflater;
public final android.app.Activity getParent()
Return the parent activity if this view is an embedded child.
return mParent;
public android.content.Intent getParentActivityIntent()
Obtain an {@link Intent} that will launch an explicit target activity specified by this activity's logical parent. The logical parent is named in the application's manifest by the {@link android.R.attr#parentActivityName parentActivityName} attribute. Activity subclasses may override this method to modify the Intent returned by super.getParentActivityIntent() or to implement a different mechanism of retrieving the parent intent entirely.
return
a new Intent targeting the defined parent of this activity or null if there is no valid parent.
final String parentName = mActivityInfo.parentActivityName; if (TextUtils.isEmpty(parentName)) { return null; } // If the parent itself has no parent, generate a main activity intent. final ComponentName target = new ComponentName(this, parentName); try { final ActivityInfo parentInfo = getPackageManager().getActivityInfo(target, 0); final String parentActivity = parentInfo.parentActivityName; final Intent parentIntent = parentActivity == null ? Intent.makeMainActivity(target) : new Intent().setComponent(target); return parentIntent; } catch (NameNotFoundException e) { Log.e(TAG, "getParentActivityIntent: bad parentActivityName '" + parentName + "' in manifest"); return null; }
public android.content.SharedPreferences getPreferences(int mode)
Retrieve a {@link SharedPreferences} object for accessing preferences that are private to this activity. This simply calls the underlying {@link #getSharedPreferences(String, int)} method by passing in this activity's class name as the preferences name.
param
mode Operating mode. Use {@link #MODE_PRIVATE} for the default operation, {@link #MODE_WORLD_READABLE} and {@link #MODE_WORLD_WRITEABLE} to control permissions.
return
Returns the single SharedPreferences instance that can be used to retrieve and modify the preference values.
return getSharedPreferences(getLocalClassName(), mode);
public android.net.Uri getReferrer()
Return information about who launched this activity. If the launching Intent contains an {@link android.content.Intent#EXTRA_REFERRER Intent.EXTRA_REFERRER}, that will be returned as-is; otherwise, if known, an {@link Intent#URI_ANDROID_APP_SCHEME android-app:} referrer URI containing the package name that started the Intent will be returned. This may return null if no referrer can be identified -- it is neither explicitly specified, nor is it known which application package was involved.
If called while inside the handling of {@link #onNewIntent}, this function will return the referrer that submitted that new intent to the activity. Otherwise, it always returns the referrer of the original Intent.

Note that this is not a security feature -- you can not trust the referrer information, applications can spoof it.
Intent intent = getIntent(); Uri referrer = intent.getParcelableExtra(Intent.EXTRA_REFERRER); if (referrer != null) { return referrer; } String referrerName = intent.getStringExtra(Intent.EXTRA_REFERRER_NAME); if (referrerName != null) { return Uri.parse(referrerName); } if (mReferrer != null) { return new Uri.Builder().scheme("android-app").authority(mReferrer).build(); } return null;
public int getRequestedOrientation()
Return the current requested orientation of the activity. This will either be the orientation requested in its component's manifest, or the last requested orientation given to {@link #setRequestedOrientation(int)}.
return
Returns an orientation constant as used in {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}.
if (mParent == null) { try { return ActivityManagerNative.getDefault() .getRequestedOrientation(mToken); } catch (RemoteException e) { // Empty } } else { return mParent.getRequestedOrientation(); } return ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED;
public java.lang.Object getSystemService(java.lang.String name)
if (getBaseContext() == null) { throw new IllegalStateException( "System services not available to Activities before onCreate()"); } if (WINDOW_SERVICE.equals(name)) { return mWindowManager; } else if (SEARCH_SERVICE.equals(name)) { ensureSearchManager(); return mSearchManager; } return super.getSystemService(name);
public int getTaskId()
Return the identifier of the task this activity is in. This identifier will remain the same for the lifetime of the activity.
return
Task identifier, an opaque integer.
try { return ActivityManagerNative.getDefault() .getTaskForActivity(mToken, false); } catch (RemoteException e) { return -1; }
public final java.lang.CharSequence getTitle()
return mTitle;
public final int getTitleColor()
return mTitleColor;
public VoiceInteractor getVoiceInteractor()
hide
Retrieve the active {@link VoiceInteractor} that the user is going through to interact with this activity.
return mVoiceInteractor;
public final int getVolumeControlStream()
Gets the suggested audio stream whose volume should be changed by the hardware volume controls.
return
The suggested audio stream type whose volume should be changed by the hardware volume controls.
see
#setVolumeControlStream(int)
return getWindow().getVolumeControlStream();
public android.view.Window getWindow()
Retrieve the current {@link android.view.Window} for the activity. This can be used to directly access parts of the Window API that are not available through Activity/Screen.
return
Window The current window, or null if the activity is not visual.
return mWindow;
public android.view.WindowManager getWindowManager()
Retrieve the window manager for showing custom windows.
return mWindowManager;
public boolean hasWindowFocus()
Returns true if this activity's main window currently has window focus. Note that this is not the same as the view itself having focus.
return
True if this activity's main window currently has window focus.
see
#onWindowAttributesChanged(android.view.WindowManager.LayoutParams)
Window w = getWindow(); if (w != null) { View d = w.getDecorView(); if (d != null) { return d.hasWindowFocus(); } } return false;
private void initWindowDecorActionBar()
Creates a new ActionBar, locates the inflated ActionBarView, initializes the ActionBar with the view, and sets mActionBar.
Window window = getWindow(); // Initializing the window decor can change window feature flags. // Make sure that we have the correct set before performing the test below. window.getDecorView(); if (isChild() || !window.hasFeature(Window.FEATURE_ACTION_BAR) || mActionBar != null) { return; } mActionBar = new WindowDecorActionBar(this); mActionBar.setDefaultDisplayHomeAsUpEnabled(mEnableDefaultActionBarUp); mWindow.setDefaultIcon(mActivityInfo.getIconResource()); mWindow.setDefaultLogo(mActivityInfo.getLogoResource());
void invalidateFragment(java.lang.String who)
//Log.v(TAG, "invalidateFragmentIndex: index=" + index); if (mAllLoaderManagers != null) { LoaderManagerImpl lm = mAllLoaderManagers.get(who); if (lm != null && !lm.mRetaining) { lm.doDestroy(); mAllLoaderManagers.remove(who); } }
public void invalidateOptionsMenu()
Declare that the options menu has changed, so should be recreated. The {@link #onCreateOptionsMenu(Menu)} method will be called the next time it needs to be displayed.
if (mWindow.hasFeature(Window.FEATURE_OPTIONS_PANEL) && (mActionBar == null || !mActionBar.invalidateOptionsMenu())) { mWindow.invalidatePanelMenu(Window.FEATURE_OPTIONS_PANEL); }
public boolean isBackgroundVisibleBehind()
Translucent activities may call this to determine if there is an activity below them that is currently set to be visible in the background.
return
true if an activity below is set to visible according to the most recent call to {@link #requestVisibleBehind(boolean)}, false otherwise.
see
#requestVisibleBehind(boolean)
see
#onVisibleBehindCanceled()
see
#onBackgroundVisibleBehindChanged(boolean)
hide
try { return ActivityManagerNative.getDefault().isBackgroundVisibleBehind(mToken); } catch (RemoteException e) { } return false;
public boolean isChangingConfigurations()
Check to see whether this activity is in the process of being destroyed in order to be recreated with a new configuration. This is often used in {@link #onStop} to determine whether the state needs to be cleaned up or will be passed on to the next instance of the activity via {@link #onRetainNonConfigurationInstance()}.
return
If the activity is being torn down in order to be recreated with a new configuration, returns true; else returns false.
return mChangingConfigurations;
public final boolean isChild()
Is this activity embedded inside of another activity?
return mParent != null;
public boolean isDestroyed()
Returns true if the final {@link #onDestroy()} call has been made on the Activity, so this instance is now dead.
return mDestroyed;
public boolean isFinishing()
Check to see whether this activity is in the process of finishing, either because you called {@link #finish} on it or someone else has requested that it finished. This is often used in {@link #onPause} to determine whether the activity is simply pausing or completely finishing.
return
If the activity is finishing, returns true; else returns false.
see
#finish
return mFinished;
public boolean isImmersive()
Bit indicating that this activity is "immersive" and should not be interrupted by notifications if possible. This value is initially set by the manifest property android:immersive but may be changed at runtime by {@link #setImmersive}.
see
#setImmersive(boolean)
see
android.content.pm.ActivityInfo#FLAG_IMMERSIVE
try { return ActivityManagerNative.getDefault().isImmersive(mToken); } catch (RemoteException e) { return false; }
public final boolean isResumed()
hide
return mResumed;
public boolean isTaskRoot()
Return whether this activity is the root of a task. The root is the first activity in a task.
return
True if this is the root activity, else false.
try { return ActivityManagerNative.getDefault() .getTaskForActivity(mToken, true) >= 0; } catch (RemoteException e) { return false; }
private boolean isTopOfTask()
Indication of whether this is the highest level activity in this task. Can be used to determine whether an activity launched by this activity was placed in the same task or another task.
return
true if this is the topmost, non-finishing activity in its task.
try { return ActivityManagerNative.getDefault().isTopOfTask(mToken); } catch (RemoteException e) { return false; }
public boolean isVoiceInteraction()
hide
Check whether this activity is running as part of a voice interaction with the user. If true, it should perform its interaction with the user through the {@link VoiceInteractor} returned by {@link #getVoiceInteractor}.
return mVoiceInteractor != null;
void makeVisible()
if (!mWindowAdded) { ViewManager wm = getWindowManager(); wm.addView(mDecor, getWindow().getAttributes()); mWindowAdded = true; } mDecor.setVisibility(View.VISIBLE);
public final android.database.Cursor managedQuery(android.net.Uri uri, java.lang.String[] projection, java.lang.String selection, java.lang.String sortOrder)
Wrapper around {@link ContentResolver#query(android.net.Uri , String[], String, String[], String)} that gives the resulting {@link Cursor} to call {@link #startManagingCursor} so that the activity will manage its lifecycle for you. If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} or later, consider instead using {@link LoaderManager} instead, available via {@link #getLoaderManager()}.
Warning: Do not call {@link Cursor#close()} on a cursor obtained using this method, because the activity will do that for you at the appropriate time. However, if you call {@link #stopManagingCursor} on a cursor from a managed query, the system will not automatically close the cursor and, in that case, you must call {@link Cursor#close()}.
param
uri The URI of the content provider to query.
param
projection List of columns to return.
param
selection SQL WHERE clause.
param
sortOrder SQL ORDER BY clause.
return
The Cursor that was returned by query().
see
ContentResolver#query(android.net.Uri , String[], String, String[], String)
see
#startManagingCursor
hide
deprecated
Use {@link CursorLoader} instead.
Cursor c = getContentResolver().query(uri, projection, selection, null, sortOrder); if (c != null) { startManagingCursor(c); } return c;
public final android.database.Cursor managedQuery(android.net.Uri uri, java.lang.String[] projection, java.lang.String selection, java.lang.String[] selectionArgs, java.lang.String sortOrder)
Wrapper around {@link ContentResolver#query(android.net.Uri , String[], String, String[], String)} that gives the resulting {@link Cursor} to call {@link #startManagingCursor} so that the activity will manage its lifecycle for you. If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} or later, consider instead using {@link LoaderManager} instead, available via {@link #getLoaderManager()}.
Warning: Do not call {@link Cursor#close()} on a cursor obtained using this method, because the activity will do that for you at the appropriate time. However, if you call {@link #stopManagingCursor} on a cursor from a managed query, the system will not automatically close the cursor and, in that case, you must call {@link Cursor#close()}.
param
uri The URI of the content provider to query.
param
projection List of columns to return.
param
selection SQL WHERE clause.
param
selectionArgs The arguments to selection, if any ?s are pesent
param
sortOrder SQL ORDER BY clause.
return
The Cursor that was returned by query().
see
ContentResolver#query(android.net.Uri , String[], String, String[], String)
see
#startManagingCursor
deprecated
Use {@link CursorLoader} instead.
Cursor c = getContentResolver().query(uri, projection, selection, selectionArgs, sortOrder); if (c != null) { startManagingCursor(c); } return c;
private java.lang.IllegalArgumentException missingDialog(int id)
Creates an exception to throw if a user passed in a dialog id that is unexpected.
return new IllegalArgumentException("no dialog with id " + id + " was ever " + "shown via Activity#showDialog");
public boolean moveTaskToBack(boolean nonRoot)
Move the task containing this activity to the back of the activity stack. The activity's order within the task is unchanged.
param
nonRoot If false then this only works if the activity is the root of a task; if true it will work for any activity in a task.
return
If the task was moved (or it was already at the back) true is returned, else false.
try { return ActivityManagerNative.getDefault().moveActivityTaskToBack( mToken, nonRoot); } catch (RemoteException e) { // Empty } return false;
public boolean navigateUpTo(android.content.Intent upIntent)
Navigate from this activity to the activity specified by upIntent, finishing this activity in the process. If the activity indicated by upIntent already exists in the task's history, this activity and all others before the indicated activity in the history stack will be finished.
If the indicated activity does not appear in the history stack, this will finish each activity in this task until the root activity of the task is reached, resulting in an "in-app home" behavior. This can be useful in apps with a complex navigation hierarchy when an activity may be reached by a path not passing through a canonical parent activity.

This method should be used when performing up navigation from within the same task as the destination. If up navigation should cross tasks in some cases, see {@link #shouldUpRecreateTask(Intent)}.
param
upIntent An intent representing the target destination for up navigation
return
true if up navigation successfully reached the activity indicated by upIntent and upIntent was delivered to it. false if an instance of the indicated activity could not be found and this activity was simply finished normally.
if (mParent == null) { ComponentName destInfo = upIntent.getComponent(); if (destInfo == null) { destInfo = upIntent.resolveActivity(getPackageManager()); if (destInfo == null) { return false; } upIntent = new Intent(upIntent); upIntent.setComponent(destInfo); } int resultCode; Intent resultData; synchronized (this) { resultCode = mResultCode; resultData = mResultData; } if (resultData != null) { resultData.prepareToLeaveProcess(); } try { upIntent.prepareToLeaveProcess(); return ActivityManagerNative.getDefault().navigateUpTo(mToken, upIntent, resultCode, resultData); } catch (RemoteException e) { return false; } } else { return mParent.navigateUpToFromChild(this, upIntent); }
public boolean navigateUpToFromChild(android.app.Activity child, android.content.Intent upIntent)
This is called when a child activity of this one calls its {@link #navigateUpTo} method. The default implementation simply calls navigateUpTo(upIntent) on this activity (the parent).
param
child The activity making the call.
param
upIntent An intent representing the target destination for up navigation
return
true if up navigation successfully reached the activity indicated by upIntent and upIntent was delivered to it. false if an instance of the indicated activity could not be found and this activity was simply finished normally.
return navigateUpTo(upIntent);
public void onActionModeFinished(android.view.ActionMode mode)
Notifies the activity that an action mode has finished. Activity subclasses overriding this method should call the superclass implementation.
param
mode The action mode that just finished.

public void onActionModeStarted(android.view.ActionMode mode)
Notifies the Activity that an action mode has been started. Activity subclasses overriding this method should call the superclass implementation.
param
mode The new action mode.

public void onActivityReenter(int resultCode, android.content.Intent data)
Called when an activity you launched with an activity transition exposes this Activity through a returning activity transition, giving you the resultCode and any additional data from it. This method will only be called if the activity set a result code other than {@link #RESULT_CANCELED} and it supports activity transitions with {@link Window#FEATURE_ACTIVITY_TRANSITIONS}.
The purpose of this function is to let the called Activity send a hint about its state so that this underlying Activity can prepare to be exposed. A call to this method does not guarantee that the called Activity has or will be exiting soon. It only indicates that it will expose this Activity's Window and it has some data to pass to prepare it.
param
resultCode The integer result code returned by the child activity through its setResult().
param
data An Intent, which can return result data to the caller (various data can be attached to Intent "extras").

protected void onActivityResult(int requestCode, int resultCode, android.content.Intent data)
Called when an activity you launched exits, giving you the requestCode you started it with, the resultCode it returned, and any additional data from it. The resultCode will be {@link #RESULT_CANCELED} if the activity explicitly returned that, didn't return any result, or crashed during its operation.
You will receive this call immediately before onResume() when your activity is re-starting.
This method is never invoked if your activity sets {@link android.R.styleable#AndroidManifestActivity_noHistory noHistory} to true.
param
requestCode The integer request code originally supplied to startActivityForResult(), allowing you to identify who this result came from.
param
resultCode The integer result code returned by the child activity through its setResult().
param
data An Intent, which can return result data to the caller (various data can be attached to Intent "extras").
see
#startActivityForResult
see
#createPendingResult
see
#setResult(int)

protected void onApplyThemeResource(Resources.Theme theme, int resid, boolean first)
if (mParent == null) { super.onApplyThemeResource(theme, resid, first); } else { try { theme.setTo(mParent.getTheme()); } catch (Exception e) { // Empty } theme.applyStyle(resid, false); } // Get the primary color and update the TaskDescription for this activity if (theme != null) { TypedArray a = theme.obtainStyledAttributes(com.android.internal.R.styleable.Theme); int colorPrimary = a.getColor(com.android.internal.R.styleable.Theme_colorPrimary, 0); a.recycle(); if (colorPrimary != 0) { ActivityManager.TaskDescription v = new ActivityManager.TaskDescription(null, null, colorPrimary); setTaskDescription(v); } }
public void onAttachFragment(Fragment fragment)
Called when a Fragment is being attached to this activity, immediately after the call to its {@link Fragment#onAttach Fragment.onAttach()} method and before {@link Fragment#onCreate Fragment.onCreate()}.

public void onAttachedToWindow()
Called when the main window associated with the activity has been attached to the window manager. See {@link View#onAttachedToWindow() View.onAttachedToWindow()} for more information.
see
View#onAttachedToWindow

public void onBackPressed()
Called when the activity has detected the user's press of the back key. The default implementation simply finishes the current activity, but you can override this to do whatever you want.
if (mActionBar != null && mActionBar.collapseActionView()) { return; } if (!mFragments.popBackStackImmediate()) { finishAfterTransition(); }
public void onBackgroundVisibleBehindChanged(boolean visible)
The topmost foreground activity will receive this call when the background visibility state of the activity below it changes. This call may be a consequence of {@link #requestVisibleBehind(boolean)} or might be due to a background activity finishing itself.
param
visible true if a background activity is visible, false otherwise.
see
#requestVisibleBehind(boolean)
see
#onVisibleBehindCanceled()
hide

protected void onChildTitleChanged(android.app.Activity childActivity, java.lang.CharSequence title)

public void onConfigurationChanged(android.content.res.Configuration newConfig)
Called by the system when the device configuration changes while your activity is running. Note that this will only be called if you have selected configurations you would like to handle with the {@link android.R.attr#configChanges} attribute in your manifest. If any configuration change occurs that is not selected to be reported by that attribute, then instead of reporting it the system will stop and restart the activity (to have it launched with the new configuration).
At the time that this function has been called, your Resources object will have been updated to return resource values matching the new configuration.
param
newConfig The new device configuration.
if (DEBUG_LIFECYCLE) Slog.v(TAG, "onConfigurationChanged " + this + ": " + newConfig); mCalled = true; mFragments.dispatchConfigurationChanged(newConfig); if (mWindow != null) { // Pass the configuration changed event to the window mWindow.onConfigurationChanged(newConfig); } if (mActionBar != null) { // Do this last; the action bar will need to access // view changes from above. mActionBar.onConfigurationChanged(newConfig); }
public void onContentChanged()

public boolean onContextItemSelected(android.view.MenuItem item)
This hook is called whenever an item in a context menu is selected. The default implementation simply returns false to have the normal processing happen (calling the item's Runnable or sending a message to its Handler as appropriate). You can use this method for any items for which you would like to do processing without those other facilities.
Use {@link MenuItem#getMenuInfo()} to get extra information set by the View that added this menu item.
Derived classes should call through to the base class for it to perform the default menu handling.
param
item The context menu item that was selected.
return
boolean Return false to allow normal context menu processing to proceed, true to consume it here.
if (mParent != null) { return mParent.onContextItemSelected(item); } return false;
public void onContextMenuClosed(android.view.Menu menu)
This hook is called whenever the context menu is being closed (either by the user canceling the menu with the back/menu button, or when an item is selected).
param
menu The context menu that is being closed.
if (mParent != null) { mParent.onContextMenuClosed(menu); }
protected void onCreate(android.os.Bundle savedInstanceState)
Called when the activity is starting. This is where most initialization should go: calling {@link #setContentView(int)} to inflate the activity's UI, using {@link #findViewById} to programmatically interact with widgets in the UI, calling {@link #managedQuery(android.net.Uri , String[], String, String[], String)} to retrieve cursors for data being displayed, etc.
You can call {@link #finish} from within this function, in which case onDestroy() will be immediately called without any of the rest of the activity lifecycle ({@link #onStart}, {@link #onResume}, {@link #onPause}, etc) executing.
Derived classes must call through to the super class's implementation of this method. If they do not, an exception will be thrown.
param
savedInstanceState If the activity is being re-initialized after previously being shut down then this Bundle contains the data it most recently supplied in {@link #onSaveInstanceState}. Note: Otherwise it is null.
see
#onStart
see
#onSaveInstanceState
see
#onRestoreInstanceState
see
#onPostCreate
if (DEBUG_LIFECYCLE) Slog.v(TAG, "onCreate " + this + ": " + savedInstanceState); if (mLastNonConfigurationInstances != null) { mAllLoaderManagers = mLastNonConfigurationInstances.loaders; } if (mActivityInfo.parentActivityName != null) { if (mActionBar == null) { mEnableDefaultActionBarUp = true; } else { mActionBar.setDefaultDisplayHomeAsUpEnabled(true); } } if (savedInstanceState != null) { Parcelable p = savedInstanceState.getParcelable(FRAGMENTS_TAG); mFragments.restoreAllState(p, mLastNonConfigurationInstances != null ? mLastNonConfigurationInstances.fragments : null); } mFragments.dispatchCreate(); getApplication().dispatchActivityCreated(this, savedInstanceState); if (mVoiceInteractor != null) { mVoiceInteractor.attachActivity(this); } mCalled = true;
public void onCreate(android.os.Bundle savedInstanceState, android.os.PersistableBundle persistentState)
Same as {@link #onCreate(android.os.Bundle)} but called for those activities created with the attribute {@link android.R.attr#persistableMode} set to persistAcrossReboots.
param
savedInstanceState if the activity is being re-initialized after previously being shut down then this Bundle contains the data it most recently supplied in {@link #onSaveInstanceState}. Note: Otherwise it is null.
param
persistentState if the activity is being re-initialized after previously being shut down or powered off then this Bundle contains the data it most recently supplied to outPersistentState in {@link #onSaveInstanceState}. Note: Otherwise it is null.
see
#onCreate(android.os.Bundle)
see
#onStart
see
#onSaveInstanceState
see
#onRestoreInstanceState
see
#onPostCreate
onCreate(savedInstanceState);
public void onCreateContextMenu(android.view.ContextMenu menu, android.view.View v, android.view.ContextMenu.ContextMenuInfo menuInfo)
Called when a context menu for the {@code view} is about to be shown. Unlike {@link #onCreateOptionsMenu(Menu)}, this will be called every time the context menu is about to be shown and should be populated for the view (or item inside the view for {@link AdapterView} subclasses, this can be found in the {@code menuInfo})).
Use {@link #onContextItemSelected(android.view.MenuItem)} to know when an item has been selected.
It is not safe to hold onto the context menu after this method returns.

public java.lang.CharSequence onCreateDescription()
Generate a new description for this activity. This method is called before pausing the activity and can, if desired, return some textual description of its current state to be displayed to the user.
The default implementation returns null, which will cause you to inherit the description from the previous activity. If all activities return null, generally the label of the top activity will be used as the description.
return
A description of what the user is doing. It should be short and sweet (only a few words).
see
#onCreateThumbnail
see
#onSaveInstanceState
see
#onPause
return null;
protected Dialog onCreateDialog(int id)
deprecated
Old no-arguments version of {@link #onCreateDialog(int, Bundle)}.
return null;
protected Dialog onCreateDialog(int id, android.os.Bundle args)
Callback for creating dialogs that are managed (saved and restored) for you by the activity. The default implementation calls through to {@link #onCreateDialog(int)} for compatibility. If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} or later, consider instead using a {@link DialogFragment} instead.
If you use {@link #showDialog(int)}, the activity will call through to this method the first time, and hang onto it thereafter. Any dialog that is created by this method will automatically be saved and restored for you, including whether it is showing.
If you would like the activity to manage saving and restoring dialogs for you, you should override this method and handle any ids that are passed to {@link #showDialog}.
If you would like an opportunity to prepare your dialog before it is shown, override {@link #onPrepareDialog(int, Dialog, Bundle)}.
param
id The id of the dialog.
param
args The dialog arguments provided to {@link #showDialog(int, Bundle)}.
return
The dialog. If you return null, the dialog will not be created.
see
#onPrepareDialog(int, Dialog, Bundle)
see
#showDialog(int, Bundle)
see
#dismissDialog(int)
see
#removeDialog(int)
deprecated
Use the new {@link DialogFragment} class with {@link FragmentManager} instead; this is also available on older platforms through the Android compatibility package.
return onCreateDialog(id);
public void onCreateNavigateUpTaskStack(TaskStackBuilder builder)
Define the synthetic task stack that will be generated during Up navigation from a different task.
The default implementation of this method adds the parent chain of this activity as specified in the manifest to the supplied {@link TaskStackBuilder}. Applications may choose to override this method to construct the desired task stack in a different way.

This method will be invoked by the default implementation of {@link #onNavigateUp()} if {@link #shouldUpRecreateTask(Intent)} returns true when supplied with the intent returned by {@link #getParentActivityIntent()}.

Applications that wish to supply extra Intent parameters to the parent stack defined by the manifest should override {@link #onPrepareNavigateUpTaskStack(TaskStackBuilder)}.
param
builder An empty TaskStackBuilder - the application should add intents representing the desired task stack
builder.addParentStack(this);
public boolean onCreateOptionsMenu(android.view.Menu menu)
Initialize the contents of the Activity's standard options menu. You should place your menu items in to menu.
This is only called once, the first time the options menu is displayed. To update the menu every time it is displayed, see {@link #onPrepareOptionsMenu}.
The default implementation populates the menu with standard system menu items. These are placed in the {@link Menu#CATEGORY_SYSTEM} group so that they will be correctly ordered with application-defined menu items. Deriving classes should always call through to the base implementation.
You can safely hold on to menu (and any items created from it), making modifications to it as desired, until the next time onCreateOptionsMenu() is called.
When you add items to the menu, you can implement the Activity's {@link #onOptionsItemSelected} method to handle them there.
param
menu The options menu in which you place your items.
return
You must return true for the menu to be displayed; if you return false it will not be shown.
see
#onPrepareOptionsMenu
see
#onOptionsItemSelected
if (mParent != null) { return mParent.onCreateOptionsMenu(menu); } return true;
public boolean onCreatePanelMenu(int featureId, android.view.Menu menu)
Default implementation of {@link android.view.Window.Callback#onCreatePanelMenu} for activities. This calls through to the new {@link #onCreateOptionsMenu} method for the {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel, so that subclasses of Activity don't need to deal with feature codes.
if (featureId == Window.FEATURE_OPTIONS_PANEL) { boolean show = onCreateOptionsMenu(menu); show |= mFragments.dispatchCreateOptionsMenu(menu, getMenuInflater()); return show; } return false;
public android.view.View onCreatePanelView(int featureId)
Default implementation of {@link android.view.Window.Callback#onCreatePanelView} for activities. This simply returns null so that all panel sub-windows will have the default menu behavior.
return null;
public boolean onCreateThumbnail(android.graphics.Bitmap outBitmap, android.graphics.Canvas canvas)
Generate a new thumbnail for this activity. This method is called before pausing the activity, and should draw into outBitmap the imagery for the desired thumbnail in the dimensions of that bitmap. It can use the given canvas, which is configured to draw into the bitmap, for rendering if desired.
The default implementation returns fails and does not draw a thumbnail; this will result in the platform creating its own thumbnail if needed.
param
outBitmap The bitmap to contain the thumbnail.
param
canvas Can be used to render into the bitmap.
return
Return true if you have drawn into the bitmap; otherwise after you return it will be filled with a default thumbnail.
see
#onCreateDescription
see
#onSaveInstanceState
see
#onPause
return false;
public android.view.View onCreateView(java.lang.String name, android.content.Context context, android.util.AttributeSet attrs)
Standard implementation of {@link android.view.LayoutInflater.Factory#onCreateView} used when inflating with the LayoutInflater returned by {@link #getSystemService}. This implementation does nothing and is for pre-{@link android.os.Build.VERSION_CODES#HONEYCOMB} apps. Newer apps should use {@link #onCreateView(View, String, Context, AttributeSet)}.
see
android.view.LayoutInflater#createView
see
android.view.Window#getLayoutInflater
return null;
public android.view.View onCreateView(android.view.View parent, java.lang.String name, android.content.Context context, android.util.AttributeSet attrs)
Standard implementation of {@link android.view.LayoutInflater.Factory2#onCreateView(View, String, Context, AttributeSet)} used when inflating with the LayoutInflater returned by {@link #getSystemService}. This implementation handles tags to embed fragments inside of the activity.
see
android.view.LayoutInflater#createView
see
android.view.Window#getLayoutInflater
if (!"fragment".equals(name)) { return onCreateView(name, context, attrs); } return mFragments.onCreateView(parent, name, context, attrs);
protected void onDestroy()
Perform any final cleanup before an activity is destroyed. This can happen either because the activity is finishing (someone called {@link #finish} on it, or because the system is temporarily destroying this instance of the activity to save space. You can distinguish between these two scenarios with the {@link #isFinishing} method.
Note: do not count on this method being called as a place for saving data! For example, if an activity is editing data in a content provider, those edits should be committed in either {@link #onPause} or {@link #onSaveInstanceState}, not here. This method is usually implemented to free resources like threads that are associated with an activity, so that a destroyed activity does not leave such things around while the rest of its application is still running. There are situations where the system will simply kill the activity's hosting process without calling this method (or any others) in it, so it should not be used to do things that are intended to remain around after the process goes away.
Derived classes must call through to the super class's implementation of this method. If they do not, an exception will be thrown.
see
#onPause
see
#onStop
see
#finish
see
#isFinishing
if (DEBUG_LIFECYCLE) Slog.v(TAG, "onDestroy " + this); mCalled = true; // dismiss any dialogs we are managing. if (mManagedDialogs != null) { final int numDialogs = mManagedDialogs.size(); for (int i = 0; i < numDialogs; i++) { final ManagedDialog md = mManagedDialogs.valueAt(i); if (md.mDialog.isShowing()) { md.mDialog.dismiss(); } } mManagedDialogs = null; } // close any cursors we are managing. synchronized (mManagedCursors) { int numCursors = mManagedCursors.size(); for (int i = 0; i < numCursors; i++) { ManagedCursor c = mManagedCursors.get(i); if (c != null) { c.mCursor.close(); } } mManagedCursors.clear(); } // Close any open search dialog if (mSearchManager != null) { mSearchManager.stopSearch(); } getApplication().dispatchActivityDestroyed(this);
public void onDetachedFromWindow()
Called when the main window associated with the activity has been detached from the window manager. See {@link View#onDetachedFromWindow() View.onDetachedFromWindow()} for more information.
see
View#onDetachedFromWindow

public void onEnterAnimationComplete()
Activities cannot draw during the period that their windows are animating in. In order to know when it is safe to begin drawing they can override this method which will be called when the entering animation has completed.

public boolean onGenericMotionEvent(android.view.MotionEvent event)
Called when a generic motion event was not handled by any of the views inside of the activity.
Generic motion events describe joystick movements, mouse hovers, track pad touches, scroll wheel movements and other input events. The {@link MotionEvent#getSource() source} of the motion event specifies the class of input that was received. Implementations of this method must examine the bits in the source before processing the event. The following code example shows how this is done.
Generic motion events with source class {@link android.view.InputDevice#SOURCE_CLASS_POINTER} are delivered to the view under the pointer. All other generic motion events are delivered to the focused view.
See {@link View#onGenericMotionEvent(MotionEvent)} for an example of how to handle this event.
param
event The generic motion event being processed.
return
Return true if you have consumed the event, false if you haven't. The default implementation always returns false.
return false;
public boolean onKeyDown(int keyCode, android.view.KeyEvent event)
Called when a key was pressed down and not handled by any of the views inside of the activity. So, for example, key presses while the cursor is inside a TextView will not trigger the event (unless it is a navigation to another object) because TextView handles its own key presses.
If the focused view didn't want this event, this method is called.
The default implementation takes care of {@link KeyEvent#KEYCODE_BACK} by calling {@link #onBackPressed()}, though the behavior varies based on the application compatibility mode: for {@link android.os.Build.VERSION_CODES#ECLAIR} or later applications, it will set up the dispatch to call {@link #onKeyUp} where the action will be performed; for earlier applications, it will perform the action immediately in on-down, as those versions of the platform behaved.
Other additional default key handling may be performed if configured with {@link #setDefaultKeyMode}.
return
Return true to prevent this event from being propagated further, or false to indicate that you have not handled this event and it should continue to be propagated.
see
#onKeyUp
see
android.view.KeyEvent
if (keyCode == KeyEvent.KEYCODE_BACK) { if (getApplicationInfo().targetSdkVersion >= Build.VERSION_CODES.ECLAIR) { event.startTracking(); } else { onBackPressed(); } return true; } if (mDefaultKeyMode == DEFAULT_KEYS_DISABLE) { return false; } else if (mDefaultKeyMode == DEFAULT_KEYS_SHORTCUT) { Window w = getWindow(); if (w.hasFeature(Window.FEATURE_OPTIONS_PANEL) && w.performPanelShortcut(Window.FEATURE_OPTIONS_PANEL, keyCode, event, Menu.FLAG_ALWAYS_PERFORM_CLOSE)) { return true; } return false; } else { // Common code for DEFAULT_KEYS_DIALER & DEFAULT_KEYS_SEARCH_* boolean clearSpannable = false; boolean handled; if ((event.getRepeatCount() != 0) || event.isSystem()) { clearSpannable = true; handled = false; } else { handled = TextKeyListener.getInstance().onKeyDown( null, mDefaultKeySsb, keyCode, event); if (handled && mDefaultKeySsb.length() > 0) { // something useable has been typed - dispatch it now. final String str = mDefaultKeySsb.toString(); clearSpannable = true; switch (mDefaultKeyMode) { case DEFAULT_KEYS_DIALER: Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse("tel:" + str)); intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); startActivity(intent); break; case DEFAULT_KEYS_SEARCH_LOCAL: startSearch(str, false, null, false); break; case DEFAULT_KEYS_SEARCH_GLOBAL: startSearch(str, false, null, true); break; } } } if (clearSpannable) { mDefaultKeySsb.clear(); mDefaultKeySsb.clearSpans(); Selection.setSelection(mDefaultKeySsb,0); } return handled; }
public boolean onKeyLongPress(int keyCode, android.view.KeyEvent event)
Default implementation of {@link KeyEvent.Callback#onKeyLongPress(int, KeyEvent) KeyEvent.Callback.onKeyLongPress()}: always returns false (doesn't handle the event).
return false;
public boolean onKeyMultiple(int keyCode, int repeatCount, android.view.KeyEvent event)
Default implementation of {@link KeyEvent.Callback#onKeyMultiple(int, int, KeyEvent) KeyEvent.Callback.onKeyMultiple()}: always returns false (doesn't handle the event).
return false;
public boolean onKeyShortcut(int keyCode, android.view.KeyEvent event)
Called when a key shortcut event is not handled by any of the views in the Activity. Override this method to implement global key shortcuts for the Activity. Key shortcuts can also be implemented by setting the {@link MenuItem#setShortcut(char, char) shortcut} property of menu items.
param
keyCode The value in event.getKeyCode().
param
event Description of the key event.
return
True if the key shortcut was handled.
return false;
public boolean onKeyUp(int keyCode, android.view.KeyEvent event)
Called when a key was released and not handled by any of the views inside of the activity. So, for example, key presses while the cursor is inside a TextView will not trigger the event (unless it is a navigation to another object) because TextView handles its own key presses.
The default implementation handles KEYCODE_BACK to stop the activity and go back.
return
Return true to prevent this event from being propagated further, or false to indicate that you have not handled this event and it should continue to be propagated.
see
#onKeyDown
see
KeyEvent
if (getApplicationInfo().targetSdkVersion >= Build.VERSION_CODES.ECLAIR) { if (keyCode == KeyEvent.KEYCODE_BACK && event.isTracking() && !event.isCanceled()) { onBackPressed(); return true; } } return false;
public void onLowMemory()
if (DEBUG_LIFECYCLE) Slog.v(TAG, "onLowMemory " + this); mCalled = true; mFragments.dispatchLowMemory();
public boolean onMenuItemSelected(int featureId, android.view.MenuItem item)
Default implementation of {@link android.view.Window.Callback#onMenuItemSelected} for activities. This calls through to the new {@link #onOptionsItemSelected} method for the {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel, so that subclasses of Activity don't need to deal with feature codes.
CharSequence titleCondensed = item.getTitleCondensed(); switch (featureId) { case Window.FEATURE_OPTIONS_PANEL: // Put event logging here so it gets called even if subclass // doesn't call through to superclass's implmeentation of each // of these methods below if(titleCondensed != null) { EventLog.writeEvent(50000, 0, titleCondensed.toString()); } if (onOptionsItemSelected(item)) { return true; } if (mFragments.dispatchOptionsItemSelected(item)) { return true; } if (item.getItemId() == android.R.id.home && mActionBar != null && (mActionBar.getDisplayOptions() & ActionBar.DISPLAY_HOME_AS_UP) != 0) { if (mParent == null) { return onNavigateUp(); } else { return mParent.onNavigateUpFromChild(this); } } return false; case Window.FEATURE_CONTEXT_MENU: if(titleCondensed != null) { EventLog.writeEvent(50000, 1, titleCondensed.toString()); } if (onContextItemSelected(item)) { return true; } return mFragments.dispatchContextItemSelected(item); default: return false; }
public boolean onMenuOpened(int featureId, android.view.Menu menu)
{@inheritDoc}
return
The default implementation returns true.
if (featureId == Window.FEATURE_ACTION_BAR) { initWindowDecorActionBar(); if (mActionBar != null) { mActionBar.dispatchMenuVisibilityChanged(true); } else { Log.e(TAG, "Tried to open action bar menu with no action bar"); } } return true;
public boolean onNavigateUp()
This method is called whenever the user chooses to navigate Up within your application's activity hierarchy from the action bar.
If the attribute {@link android.R.attr#parentActivityName parentActivityName} was specified in the manifest for this activity or an activity-alias to it, default Up navigation will be handled automatically. If any activity along the parent chain requires extra Intent arguments, the Activity subclass should override the method {@link #onPrepareNavigateUpTaskStack(TaskStackBuilder)} to supply those arguments.

See Tasks and Back Stack from the developer guide and Navigation from the design guide for more information about navigating within your app.

See the {@link TaskStackBuilder} class and the Activity methods {@link #getParentActivityIntent()}, {@link #shouldUpRecreateTask(Intent)}, and {@link #navigateUpTo(Intent)} for help implementing custom Up navigation. The AppNavigation sample application in the Android SDK is also available for reference.
return
true if Up navigation completed successfully and this Activity was finished, false otherwise.
// Automatically handle hierarchical Up navigation if the proper // metadata is available. Intent upIntent = getParentActivityIntent(); if (upIntent != null) { if (mActivityInfo.taskAffinity == null) { // Activities with a null affinity are special; they really shouldn't // specify a parent activity intent in the first place. Just finish // the current activity and call it a day. finish(); } else if (shouldUpRecreateTask(upIntent)) { TaskStackBuilder b = TaskStackBuilder.create(this); onCreateNavigateUpTaskStack(b); onPrepareNavigateUpTaskStack(b); b.startActivities(); // We can't finishAffinity if we have a result. // Fall back and simply finish the current activity instead. if (mResultCode != RESULT_CANCELED || mResultData != null) { // Tell the developer what's going on to avoid hair-pulling. Log.i(TAG, "onNavigateUp only finishing topmost activity to return a result"); finish(); } else { finishAffinity(); } } else { navigateUpTo(upIntent); } return true; } return false;
public boolean onNavigateUpFromChild(android.app.Activity child)
This is called when a child activity of this one attempts to navigate up. The default implementation simply calls onNavigateUp() on this activity (the parent).
param
child The activity making the call.
return onNavigateUp();
public void onNewActivityOptions(ActivityOptions options)
hide
mActivityTransitionState.setEnterActivityOptions(this, options); if (!mStopped) { mActivityTransitionState.enterReady(this); }
protected void onNewIntent(android.content.Intent intent)
This is called for activities that set launchMode to "singleTop" in their package, or if a client used the {@link Intent#FLAG_ACTIVITY_SINGLE_TOP} flag when calling {@link #startActivity}. In either case, when the activity is re-launched while at the top of the activity stack instead of a new instance of the activity being started, onNewIntent() will be called on the existing instance with the Intent that was used to re-launch it.
An activity will always be paused before receiving a new intent, so you can count on {@link #onResume} being called after this method.
Note that {@link #getIntent} still returns the original Intent. You can use {@link #setIntent} to update it to this new Intent.
param
intent The new intent that was started for the activity.
see
#getIntent
see
#setIntent
see
#onResume

public boolean onOptionsItemSelected(android.view.MenuItem item)
This hook is called whenever an item in your options menu is selected. The default implementation simply returns false to have the normal processing happen (calling the item's Runnable or sending a message to its Handler as appropriate). You can use this method for any items for which you would like to do processing without those other facilities.
Derived classes should call through to the base class for it to perform the default menu handling.
param
item The menu item that was selected.
return
boolean Return false to allow normal menu processing to proceed, true to consume it here.
see
#onCreateOptionsMenu
if (mParent != null) { return mParent.onOptionsItemSelected(item); } return false;
public void onOptionsMenuClosed(android.view.Menu menu)
This hook is called whenever the options menu is being closed (either by the user canceling the menu with the back/menu button, or when an item is selected).
param
menu The options menu as last shown or first initialized by onCreateOptionsMenu().
if (mParent != null) { mParent.onOptionsMenuClosed(menu); }
public void onPanelClosed(int featureId, android.view.Menu menu)
Default implementation of {@link android.view.Window.Callback#onPanelClosed(int, Menu)} for activities. This calls through to {@link #onOptionsMenuClosed(Menu)} method for the {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel, so that subclasses of Activity don't need to deal with feature codes. For context menus ({@link Window#FEATURE_CONTEXT_MENU}), the {@link #onContextMenuClosed(Menu)} will be called.
switch (featureId) { case Window.FEATURE_OPTIONS_PANEL: mFragments.dispatchOptionsMenuClosed(menu); onOptionsMenuClosed(menu); break; case Window.FEATURE_CONTEXT_MENU: onContextMenuClosed(menu); break; case Window.FEATURE_ACTION_BAR: initWindowDecorActionBar(); mActionBar.dispatchMenuVisibilityChanged(false); break; }
protected void onPause()
Called as part of the activity lifecycle when an activity is going into the background, but has not (yet) been killed. The counterpart to {@link #onResume}.
When activity B is launched in front of activity A, this callback will be invoked on A. B will not be created until A's {@link #onPause} returns, so be sure to not do anything lengthy here.
This callback is mostly used for saving any persistent state the activity is editing, to present a "edit in place" model to the user and making sure nothing is lost if there are not enough resources to start the new activity without first killing this one. This is also a good place to do things like stop animations and other things that consume a noticeable amount of CPU in order to make the switch to the next activity as fast as possible, or to close resources that are exclusive access such as the camera.
In situations where the system needs more memory it may kill paused processes to reclaim resources. Because of this, you should be sure that all of your state is saved by the time you return from this function. In general {@link #onSaveInstanceState} is used to save per-instance state in the activity and this method is used to store global persistent data (in content providers, files, etc.)
After receiving this call you will usually receive a following call to {@link #onStop} (after the next activity has been resumed and displayed), however in some cases there will be a direct call back to {@link #onResume} without going through the stopped state.
Derived classes must call through to the super class's implementation of this method. If they do not, an exception will be thrown.
see
#onResume
see
#onSaveInstanceState
see
#onStop
if (DEBUG_LIFECYCLE) Slog.v(TAG, "onPause " + this); getApplication().dispatchActivityPaused(this); mCalled = true;
protected void onPostCreate(android.os.Bundle savedInstanceState)
Called when activity start-up is complete (after {@link #onStart} and {@link #onRestoreInstanceState} have been called). Applications will generally not implement this method; it is intended for system classes to do final initialization after application code has run.
Derived classes must call through to the super class's implementation of this method. If they do not, an exception will be thrown.
param
savedInstanceState If the activity is being re-initialized after previously being shut down then this Bundle contains the data it most recently supplied in {@link #onSaveInstanceState}. Note: Otherwise it is null.
see
#onCreate
if (!isChild()) { mTitleReady = true; onTitleChanged(getTitle(), getTitleColor()); } mCalled = true;
public void onPostCreate(android.os.Bundle savedInstanceState, android.os.PersistableBundle persistentState)
This is the same as {@link #onPostCreate(Bundle)} but is called for activities created with the attribute {@link android.R.attr#persistableMode} set to persistAcrossReboots.
param
savedInstanceState The data most recently supplied in {@link #onSaveInstanceState}
param
persistentState The data caming from the PersistableBundle first saved in {@link #onSaveInstanceState(Bundle, PersistableBundle)}.
see
#onCreate
onPostCreate(savedInstanceState);
protected void onPostResume()
Called when activity resume is complete (after {@link #onResume} has been called). Applications will generally not implement this method; it is intended for system classes to do final setup after application resume code has run.
Derived classes must call through to the super class's implementation of this method. If they do not, an exception will be thrown.
see
#onResume
final Window win = getWindow(); if (win != null) win.makeActive(); if (mActionBar != null) mActionBar.setShowHideAnimationEnabled(true); mCalled = true;
protected void onPrepareDialog(int id, Dialog dialog)
deprecated
Old no-arguments version of {@link #onPrepareDialog(int, Dialog, Bundle)}.
dialog.setOwnerActivity(this);
protected void onPrepareDialog(int id, Dialog dialog, android.os.Bundle args)
Provides an opportunity to prepare a managed dialog before it is being shown. The default implementation calls through to {@link #onPrepareDialog(int, Dialog)} for compatibility.
Override this if you need to update a managed dialog based on the state of the application each time it is shown. For example, a time picker dialog might want to be updated with the current time. You should call through to the superclass's implementation. The default implementation will set this Activity as the owner activity on the Dialog.
param
id The id of the managed dialog.
param
dialog The dialog.
param
args The dialog arguments provided to {@link #showDialog(int, Bundle)}.
see
#onCreateDialog(int, Bundle)
see
#showDialog(int)
see
#dismissDialog(int)
see
#removeDialog(int)
deprecated
Use the new {@link DialogFragment} class with {@link FragmentManager} instead; this is also available on older platforms through the Android compatibility package.
onPrepareDialog(id, dialog);
public void onPrepareNavigateUpTaskStack(TaskStackBuilder builder)
Prepare the synthetic task stack that will be generated during Up navigation from a different task.
This method receives the {@link TaskStackBuilder} with the constructed series of Intents as generated by {@link #onCreateNavigateUpTaskStack(TaskStackBuilder)}. If any extra data should be added to these intents before launching the new task, the application should override this method and add that data here.
param
builder A TaskStackBuilder that has been populated with Intents by onCreateNavigateUpTaskStack.

public boolean onPrepareOptionsMenu(android.view.Menu menu)
Prepare the Screen's standard options menu to be displayed. This is called right before the menu is shown, every time it is shown. You can use this method to efficiently enable/disable items or otherwise dynamically modify the contents.
The default implementation updates the system menu items based on the activity's state. Deriving classes should always call through to the base class implementation.
param
menu The options menu as last shown or first initialized by onCreateOptionsMenu().
return
You must return true for the menu to be displayed; if you return false it will not be shown.
see
#onCreateOptionsMenu
if (mParent != null) { return mParent.onPrepareOptionsMenu(menu); } return true;
public boolean onPreparePanel(int featureId, android.view.View view, android.view.Menu menu)
Default implementation of {@link android.view.Window.Callback#onPreparePanel} for activities. This calls through to the new {@link #onPrepareOptionsMenu} method for the {@link android.view.Window#FEATURE_OPTIONS_PANEL} panel, so that subclasses of Activity don't need to deal with feature codes.
if (featureId == Window.FEATURE_OPTIONS_PANEL && menu != null) { boolean goforit = onPrepareOptionsMenu(menu); goforit |= mFragments.dispatchPrepareOptionsMenu(menu); return goforit; } return true;
public void onProvideAssistData(android.os.Bundle data)
This is called when the user is requesting an assist, to build a full {@link Intent#ACTION_ASSIST} Intent with all of the context of the current application. You can override this method to place into the bundle anything you would like to appear in the {@link Intent#EXTRA_ASSIST_CONTEXT} part of the assist Intent. The default implementation does nothing.
This function will be called after any global assist callbacks that had been registered with {@link Application#registerOnProvideAssistDataListener Application.registerOnProvideAssistDataListener}.

protected void onRestart()
Called after {@link #onStop} when the current activity is being re-displayed to the user (the user has navigated back to it). It will be followed by {@link #onStart} and then {@link #onResume}.
For activities that are using raw {@link Cursor} objects (instead of creating them through {@link #managedQuery(android.net.Uri , String[], String, String[], String)}, this is usually the place where the cursor should be requeried (because you had deactivated it in {@link #onStop}.
Derived classes must call through to the super class's implementation of this method. If they do not, an exception will be thrown.
see
#onStop
see
#onStart
see
#onResume
mCalled = true;
protected void onRestoreInstanceState(android.os.Bundle savedInstanceState)
This method is called after {@link #onStart} when the activity is being re-initialized from a previously saved state, given here in savedInstanceState. Most implementations will simply use {@link #onCreate} to restore their state, but it is sometimes convenient to do it here after all of the initialization has been done or to allow subclasses to decide whether to use your default implementation. The default implementation of this method performs a restore of any view state that had previously been frozen by {@link #onSaveInstanceState}.
This method is called between {@link #onStart} and {@link #onPostCreate}.
param
savedInstanceState the data most recently supplied in {@link #onSaveInstanceState}.
see
#onCreate
see
#onPostCreate
see
#onResume
see
#onSaveInstanceState
if (mWindow != null) { Bundle windowState = savedInstanceState.getBundle(WINDOW_HIERARCHY_TAG); if (windowState != null) { mWindow.restoreHierarchyState(windowState); } }
public void onRestoreInstanceState(android.os.Bundle savedInstanceState, android.os.PersistableBundle persistentState)
This is the same as {@link #onRestoreInstanceState(Bundle)} but is called for activities created with the attribute {@link android.R.attr#persistableMode} set to persistAcrossReboots. The {@link android.os.PersistableBundle} passed came from the restored PersistableBundle first saved in {@link #onSaveInstanceState(Bundle, PersistableBundle)}.
This method is called between {@link #onStart} and {@link #onPostCreate}.
If this method is called {@link #onRestoreInstanceState(Bundle)} will not be called.
param
savedInstanceState the data most recently supplied in {@link #onSaveInstanceState}.
param
persistentState the data most recently supplied in {@link #onSaveInstanceState}.
see
#onRestoreInstanceState(Bundle)
see
#onCreate
see
#onPostCreate
see
#onResume
see
#onSaveInstanceState
if (savedInstanceState != null) { onRestoreInstanceState(savedInstanceState); }
protected void onResume()
Called after {@link #onRestoreInstanceState}, {@link #onRestart}, or {@link #onPause}, for your activity to start interacting with the user. This is a good place to begin animations, open exclusive-access devices (such as the camera), etc.
Keep in mind that onResume is not the best indicator that your activity is visible to the user; a system window such as the keyguard may be in front. Use {@link #onWindowFocusChanged} to know for certain that your activity is visible to the user (for example, to resume a game).
Derived classes must call through to the super class's implementation of this method. If they do not, an exception will be thrown.
see
#onRestoreInstanceState
see
#onRestart
see
#onPostResume
see
#onPause
if (DEBUG_LIFECYCLE) Slog.v(TAG, "onResume " + this); getApplication().dispatchActivityResumed(this); mActivityTransitionState.onResume(); mCalled = true;
java.util.HashMap onRetainNonConfigurationChildInstances()
This method is similar to {@link #onRetainNonConfigurationInstance()} except that it should return either a mapping from child activity id strings to arbitrary objects, or null. This method is intended to be used by Activity framework subclasses that control a set of child activities, such as ActivityGroup. The same guarantees and restrictions apply as for {@link #onRetainNonConfigurationInstance()}. The default implementation returns null.
return null;
public java.lang.Object onRetainNonConfigurationInstance()
Called by the system, as part of destroying an activity due to a configuration change, when it is known that a new instance will immediately be created for the new configuration. You can return any object you like here, including the activity instance itself, which can later be retrieved by calling {@link #getLastNonConfigurationInstance()} in the new activity instance. If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} or later, consider instead using a {@link Fragment} with {@link Fragment#setRetainInstance(boolean) Fragment.setRetainInstance(boolean}.
This function is called purely as an optimization, and you must not rely on it being called. When it is called, a number of guarantees will be made to help optimize configuration switching:

The function will be called between {@link #onStop} and {@link #onDestroy}.
A new instance of the activity will always be immediately created after this one's {@link #onDestroy()} is called. In particular, no messages will be dispatched during this time (when the returned object does not have an activity to be associated with).
The object you return here will always be available from the {@link #getLastNonConfigurationInstance()} method of the following activity instance as described there.

These guarantees are designed so that an activity can use this API to propagate extensive state from the old to new activity instance, from loaded bitmaps, to network connections, to evenly actively running threads. Note that you should not propagate any data that may change based on the configuration, including any data loaded from resources such as strings, layouts, or drawables.
The guarantee of no message handling during the switch to the next activity simplifies use with active objects. For example if your retained state is an {@link android.os.AsyncTask} you are guaranteed that its call back functions (like {@link android.os.AsyncTask#onPostExecute}) will not be called from the call here until you execute the next instance's {@link #onCreate(Bundle)}. (Note however that there is of course no such guarantee for {@link android.os.AsyncTask#doInBackground} since that is running in a separate thread.)
return
Return any Object holding the desired state to propagate to the next activity instance.
deprecated
Use the new {@link Fragment} API {@link Fragment#setRetainInstance(boolean)} instead; this is also available on older platforms through the Android compatibility package.
return null;
protected void onSaveInstanceState(android.os.Bundle outState)
Called to retrieve per-instance state from an activity before being killed so that the state can be restored in {@link #onCreate} or {@link #onRestoreInstanceState} (the {@link Bundle} populated by this method will be passed to both).
This method is called before an activity may be killed so that when it comes back some time in the future it can restore its state. For example, if activity B is launched in front of activity A, and at some point activity A is killed to reclaim resources, activity A will have a chance to save the current state of its user interface via this method so that when the user returns to activity A, the state of the user interface can be restored via {@link #onCreate} or {@link #onRestoreInstanceState}.
Do not confuse this method with activity lifecycle callbacks such as {@link #onPause}, which is always called when an activity is being placed in the background or on its way to destruction, or {@link #onStop} which is called before destruction. One example of when {@link #onPause} and {@link #onStop} is called and not this method is when a user navigates back from activity B to activity A: there is no need to call {@link #onSaveInstanceState} on B because that particular instance will never be restored, so the system avoids calling it. An example when {@link #onPause} is called and not {@link #onSaveInstanceState} is when activity B is launched in front of activity A: the system may avoid calling {@link #onSaveInstanceState} on activity A if it isn't killed during the lifetime of B since the state of the user interface of A will stay intact.
The default implementation takes care of most of the UI per-instance state for you by calling {@link android.view.View#onSaveInstanceState()} on each view in the hierarchy that has an id, and by saving the id of the currently focused view (all of which is restored by the default implementation of {@link #onRestoreInstanceState}). If you override this method to save additional information not captured by each individual view, you will likely want to call through to the default implementation, otherwise be prepared to save all of the state of each view yourself.
If called, this method will occur before {@link #onStop}. There are no guarantees about whether it will occur before or after {@link #onPause}.
param
outState Bundle in which to place your saved state.
see
#onCreate
see
#onRestoreInstanceState
see
#onPause
outState.putBundle(WINDOW_HIERARCHY_TAG, mWindow.saveHierarchyState()); Parcelable p = mFragments.saveAllState(); if (p != null) { outState.putParcelable(FRAGMENTS_TAG, p); } getApplication().dispatchActivitySaveInstanceState(this, outState);
public void onSaveInstanceState(android.os.Bundle outState, android.os.PersistableBundle outPersistentState)
This is the same as {@link #onSaveInstanceState} but is called for activities created with the attribute {@link android.R.attr#persistableMode} set to persistAcrossReboots. The {@link android.os.PersistableBundle} passed in will be saved and presented in {@link #onCreate(Bundle, PersistableBundle)} the first time that this activity is restarted following the next device reboot.
param
outState Bundle in which to place your saved state.
param
outPersistentState State which will be saved across reboots.
see
#onSaveInstanceState(Bundle)
see
#onCreate
see
#onRestoreInstanceState(Bundle, PersistableBundle)
see
#onPause
onSaveInstanceState(outState);
public boolean onSearchRequested()
This hook is called when the user signals the desire to start a search.
You can use this function as a simple way to launch the search UI, in response to a menu item, search button, or other widgets within your activity. Unless overidden, calling this function is the same as calling {@link #startSearch startSearch(null, false, null, false)}, which launches search for the current activity as specified in its manifest, see {@link SearchManager}.
You can override this function to force global search, e.g. in response to a dedicated search key, or to block search entirely (by simply returning false).
Note: when running in a {@link Configuration#UI_MODE_TYPE_TELEVISION}, the default implementation changes to simply return false and you must supply your own custom implementation if you want to support search.
return
Returns {@code true} if search launched, and {@code false} if the activity does not respond to search. The default implementation always returns {@code true}, except when in {@link Configuration#UI_MODE_TYPE_TELEVISION} mode where it returns false.
see
android.app.SearchManager
if ((getResources().getConfiguration().uiMode&Configuration.UI_MODE_TYPE_MASK) != Configuration.UI_MODE_TYPE_TELEVISION) { startSearch(null, false, null, false); return true; } else { return false; }
protected void onStart()
Called after {@link #onCreate} — or after {@link #onRestart} when the activity had been stopped, but is now again being displayed to the user. It will be followed by {@link #onResume}.
Derived classes must call through to the super class's implementation of this method. If they do not, an exception will be thrown.
see
#onCreate
see
#onStop
see
#onResume
if (DEBUG_LIFECYCLE) Slog.v(TAG, "onStart " + this); mCalled = true; if (!mLoadersStarted) { mLoadersStarted = true; if (mLoaderManager != null) { mLoaderManager.doStart(); } else if (!mCheckedForLoaderManager) { mLoaderManager = getLoaderManager("(root)", mLoadersStarted, false); } mCheckedForLoaderManager = true; } getApplication().dispatchActivityStarted(this);
protected void onStop()
Called when you are no longer visible to the user. You will next receive either {@link #onRestart}, {@link #onDestroy}, or nothing, depending on later user activity.
Note that this method may never be called, in low memory situations where the system does not have enough memory to keep your activity's process running after its {@link #onPause} method is called.
Derived classes must call through to the super class's implementation of this method. If they do not, an exception will be thrown.
see
#onRestart
see
#onResume
see
#onSaveInstanceState
see
#onDestroy
if (DEBUG_LIFECYCLE) Slog.v(TAG, "onStop " + this); if (mActionBar != null) mActionBar.setShowHideAnimationEnabled(false); mActivityTransitionState.onStop(); getApplication().dispatchActivityStopped(this); mTranslucentCallback = null; mCalled = true;
protected void onTitleChanged(java.lang.CharSequence title, int color)
if (mTitleReady) { final Window win = getWindow(); if (win != null) { win.setTitle(title); if (color != 0) { win.setTitleColor(color); } } if (mActionBar != null) { mActionBar.setWindowTitle(title); } }
public boolean onTouchEvent(android.view.MotionEvent event)
Called when a touch screen event was not handled by any of the views under it. This is most useful to process touch events that happen outside of your window bounds, where there is no view to receive it.
param
event The touch screen event being processed.
return
Return true if you have consumed the event, false if you haven't. The default implementation always returns false.
if (mWindow.shouldCloseOnTouch(this, event)) { finish(); return true; } return false;
public boolean onTrackballEvent(android.view.MotionEvent event)
Called when the trackball was moved and not handled by any of the views inside of the activity. So, for example, if the trackball moves while focus is on a button, you will receive a call here because buttons do not normally do anything with trackball events. The call here happens before trackball movements are converted to DPAD key events, which then get sent back to the view hierarchy, and will be processed at the point for things like focus navigation.
param
event The trackball event being processed.
return
Return true if you have consumed the event, false if you haven't. The default implementation always returns false.
return false;
void onTranslucentConversionComplete(boolean drawComplete)
hide
if (mTranslucentCallback != null) { mTranslucentCallback.onTranslucentConversionComplete(drawComplete); mTranslucentCallback = null; } if (mChangeCanvasToTranslucent) { WindowManagerGlobal.getInstance().changeCanvasOpacity(mToken, false); }
public void onTrimMemory(int level)
if (DEBUG_LIFECYCLE) Slog.v(TAG, "onTrimMemory " + this + ": " + level); mCalled = true; mFragments.dispatchTrimMemory(level);
public void onUserInteraction()
Called whenever a key, touch, or trackball event is dispatched to the activity. Implement this method if you wish to know that the user has interacted with the device in some way while your activity is running. This callback and {@link #onUserLeaveHint} are intended to help activities manage status bar notifications intelligently; specifically, for helping activities determine the proper time to cancel a notfication.
All calls to your activity's {@link #onUserLeaveHint} callback will be accompanied by calls to {@link #onUserInteraction}. This ensures that your activity will be told of relevant user activity such as pulling down the notification pane and touching an item there.
Note that this callback will be invoked for the touch down action that begins a touch gesture, but may not be invoked for the touch-moved and touch-up actions that follow.
see
#onUserLeaveHint()

protected void onUserLeaveHint()
Called as part of the activity lifecycle when an activity is about to go into the background as the result of user choice. For example, when the user presses the Home key, {@link #onUserLeaveHint} will be called, but when an incoming phone call causes the in-call Activity to be automatically brought to the foreground, {@link #onUserLeaveHint} will not be called on the activity being interrupted. In cases when it is invoked, this method is called right before the activity's {@link #onPause} callback.
This callback and {@link #onUserInteraction} are intended to help activities manage status bar notifications intelligently; specifically, for helping activities determine the proper time to cancel a notfication.
see
#onUserInteraction()

public void onVisibleBehindCanceled()
Called when a translucent activity over this activity is becoming opaque or another activity is being launched. Activities that override this method must call super.onVisibleBehindCanceled() or a SuperNotCalledException will be thrown.
When this method is called the activity has 500 msec to release any resources it may be using while visible in the background. If the activity has not returned from this method in 500 msec the system will destroy the activity and kill the process in order to recover the resources for another process. Otherwise {@link #onStop()} will be called following return.
see
#requestVisibleBehind(boolean)
see
#onBackgroundVisibleBehindChanged(boolean)
mCalled = true;
public void onWindowAttributesChanged(WindowManager.LayoutParams params)
// Update window manager if: we have a view, that view is // attached to its parent (which will be a RootView), and // this activity is not embedded. if (mParent == null) { View decor = mDecor; if (decor != null && decor.getParent() != null) { getWindowManager().updateViewLayout(decor, params); } }
public void onWindowDismissed()
Called when the main window associated with the activity has been dismissed.
hide
finish();
public void onWindowFocusChanged(boolean hasFocus)
Called when the current {@link Window} of the activity gains or loses focus. This is the best indicator of whether this activity is visible to the user. The default implementation clears the key tracking state, so should always be called.
Note that this provides information about global focus state, which is managed independently of activity lifecycles. As such, while focus changes will generally have some relation to lifecycle changes (an activity that is stopped will not generally get window focus), you should not rely on any particular order between the callbacks here and those in the other lifecycle methods such as {@link #onResume}.
As a general rule, however, a resumed activity will have window focus... unless it has displayed other dialogs or popups that take input focus, in which case the activity itself will not have focus when the other windows have it. Likewise, the system may display system-level windows (such as the status bar notification panel or a system alert) which will temporarily take window input focus without pausing the foreground activity.
param
hasFocus Whether the window of this activity has focus.
see
#hasWindowFocus()
see
#onResume
see
View#onWindowFocusChanged(boolean)

public android.view.ActionMode onWindowStartingActionMode(ActionMode.Callback callback)
Give the Activity a chance to control the UI for an action mode requested by the system.
Note: If you are looking for a notification callback that an action mode has been started for this activity, see {@link #onActionModeStarted(ActionMode)}.
param
callback The callback that should control the new action mode
return
The new action mode, or null if the activity does not want to provide special handling for this action mode. (It will be handled by the system.)
initWindowDecorActionBar(); if (mActionBar != null) { return mActionBar.startActionMode(callback); } return null;
public void openContextMenu(android.view.View view)
Programmatically opens the context menu for a particular {@code view}. The {@code view} should have been added via {@link #registerForContextMenu(View)}.
param
view The view to show the context menu for.
view.showContextMenu();
public void openOptionsMenu()
Programmatically opens the options menu. If the options menu is already open, this method does nothing.
if (mWindow.hasFeature(Window.FEATURE_OPTIONS_PANEL) && (mActionBar == null || !mActionBar.openOptionsMenu())) { mWindow.openPanel(Window.FEATURE_OPTIONS_PANEL, null); }
public void overridePendingTransition(int enterAnim, int exitAnim)
Call immediately after one of the flavors of {@link #startActivity(Intent)} or {@link #finish} to specify an explicit transition animation to perform next.
As of {@link android.os.Build.VERSION_CODES#JELLY_BEAN} an alternative to using this with starting activities is to supply the desired animation information through a {@link ActivityOptions} bundle to {@link #startActivity(Intent, Bundle) or a related function. This allows you to specify a custom animation even when starting an activity from outside the context of the current top activity.
param
enterAnim A resource ID of the animation resource to use for the incoming activity. Use 0 for no animation.
param
exitAnim A resource ID of the animation resource to use for the outgoing activity. Use 0 for no animation.
try { ActivityManagerNative.getDefault().overridePendingTransition( mToken, getPackageName(), enterAnim, exitAnim); } catch (RemoteException e) { }
final void performCreate(android.os.Bundle icicle)
onCreate(icicle); mActivityTransitionState.readState(icicle); performCreateCommon();
final void performCreate(android.os.Bundle icicle, android.os.PersistableBundle persistentState)
onCreate(icicle, persistentState); mActivityTransitionState.readState(icicle); performCreateCommon();
final void performCreateCommon()
mVisibleFromClient = !mWindow.getWindowStyle().getBoolean( com.android.internal.R.styleable.Window_windowNoDisplay, false); mFragments.dispatchActivityCreated(); mActivityTransitionState.setEnterActivityOptions(this, getActivityOptions());
final void performDestroy()
mDestroyed = true; mWindow.destroy(); mFragments.dispatchDestroy(); onDestroy(); if (mLoaderManager != null) { mLoaderManager.doDestroy(); } if (mVoiceInteractor != null) { mVoiceInteractor.detachActivity(); }
final void performPause()
mDoReportFullyDrawn = false; mFragments.dispatchPause(); mCalled = false; onPause(); mResumed = false; if (!mCalled && getApplicationInfo().targetSdkVersion >= android.os.Build.VERSION_CODES.GINGERBREAD) { throw new SuperNotCalledException( "Activity " + mComponent.toShortString() + " did not call through to super.onPause()"); } mResumed = false;
final void performRestart()
mFragments.noteStateNotSaved(); if (mStopped) { mStopped = false; if (mToken != null && mParent == null) { WindowManagerGlobal.getInstance().setStoppedState(mToken, false); } synchronized (mManagedCursors) { final int N = mManagedCursors.size(); for (int i=0; i<N; i++) { ManagedCursor mc = mManagedCursors.get(i); if (mc.mReleased || mc.mUpdated) { if (!mc.mCursor.requery()) { if (getApplicationInfo().targetSdkVersion >= android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH) { throw new IllegalStateException( "trying to requery an already closed cursor " + mc.mCursor); } } mc.mReleased = false; mc.mUpdated = false; } } } mCalled = false; mInstrumentation.callActivityOnRestart(this); if (!mCalled) { throw new SuperNotCalledException( "Activity " + mComponent.toShortString() + " did not call through to super.onRestart()"); } performStart(); }
final void performRestoreInstanceState(android.os.Bundle savedInstanceState)
The hook for {@link ActivityThread} to restore the state of this activity. Calls {@link #onSaveInstanceState(android.os.Bundle)} and {@link #restoreManagedDialogs(android.os.Bundle)}.
param
savedInstanceState contains the saved state
onRestoreInstanceState(savedInstanceState); restoreManagedDialogs(savedInstanceState);
final void performRestoreInstanceState(android.os.Bundle savedInstanceState, android.os.PersistableBundle persistentState)
The hook for {@link ActivityThread} to restore the state of this activity. Calls {@link #onSaveInstanceState(android.os.Bundle)} and {@link #restoreManagedDialogs(android.os.Bundle)}.
param
savedInstanceState contains the saved state
param
persistentState contains the persistable saved state
onRestoreInstanceState(savedInstanceState, persistentState); if (savedInstanceState != null) { restoreManagedDialogs(savedInstanceState); }
final void performResume()
performRestart(); mFragments.execPendingActions(); mLastNonConfigurationInstances = null; mCalled = false; // mResumed is set by the instrumentation mInstrumentation.callActivityOnResume(this); if (!mCalled) { throw new SuperNotCalledException( "Activity " + mComponent.toShortString() + " did not call through to super.onResume()"); } // Now really resume, and install the current status bar and menu. mCalled = false; mFragments.dispatchResume(); mFragments.execPendingActions(); onPostResume(); if (!mCalled) { throw new SuperNotCalledException( "Activity " + mComponent.toShortString() + " did not call through to super.onPostResume()"); }
final void performSaveInstanceState(android.os.Bundle outState)
The hook for {@link ActivityThread} to save the state of this activity. Calls {@link #onSaveInstanceState(android.os.Bundle)} and {@link #saveManagedDialogs(android.os.Bundle)}.
param
outState The bundle to save the state to.
onSaveInstanceState(outState); saveManagedDialogs(outState); mActivityTransitionState.saveState(outState); if (DEBUG_LIFECYCLE) Slog.v(TAG, "onSaveInstanceState " + this + ": " + outState);
final void performSaveInstanceState(android.os.Bundle outState, android.os.PersistableBundle outPersistentState)
The hook for {@link ActivityThread} to save the state of this activity. Calls {@link #onSaveInstanceState(android.os.Bundle)} and {@link #saveManagedDialogs(android.os.Bundle)}.
param
outState The bundle to save the state to.
param
outPersistentState The bundle to save persistent state to.
onSaveInstanceState(outState, outPersistentState); saveManagedDialogs(outState); if (DEBUG_LIFECYCLE) Slog.v(TAG, "onSaveInstanceState " + this + ": " + outState + ", " + outPersistentState);
final void performStart()
mActivityTransitionState.setEnterActivityOptions(this, getActivityOptions()); mFragments.noteStateNotSaved(); mCalled = false; mFragments.execPendingActions(); mInstrumentation.callActivityOnStart(this); if (!mCalled) { throw new SuperNotCalledException( "Activity " + mComponent.toShortString() + " did not call through to super.onStart()"); } mFragments.dispatchStart(); if (mAllLoaderManagers != null) { final int N = mAllLoaderManagers.size(); LoaderManagerImpl loaders[] = new LoaderManagerImpl[N]; for (int i=N-1; i>=0; i--) { loaders[i] = mAllLoaderManagers.valueAt(i); } for (int i=0; i<N; i++) { LoaderManagerImpl lm = loaders[i]; lm.finishRetain(); lm.doReportStart(); } } mActivityTransitionState.enterReady(this);
final void performStop()
mDoReportFullyDrawn = false; if (mLoadersStarted) { mLoadersStarted = false; if (mLoaderManager != null) { if (!mChangingConfigurations) { mLoaderManager.doStop(); } else { mLoaderManager.doRetain(); } } } if (!mStopped) { if (mWindow != null) { mWindow.closeAllPanels(); } if (mToken != null && mParent == null) { WindowManagerGlobal.getInstance().setStoppedState(mToken, true); } mFragments.dispatchStop(); mCalled = false; mInstrumentation.callActivityOnStop(this); if (!mCalled) { throw new SuperNotCalledException( "Activity " + mComponent.toShortString() + " did not call through to super.onStop()"); } synchronized (mManagedCursors) { final int N = mManagedCursors.size(); for (int i=0; i<N; i++) { ManagedCursor mc = mManagedCursors.get(i); if (!mc.mReleased) { mc.mCursor.deactivate(); mc.mReleased = true; } } } mStopped = true; } mResumed = false;
final void performUserLeaving()
onUserInteraction(); onUserLeaveHint();
public void postponeEnterTransition()
Postpone the entering activity transition when Activity was started with {@link android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, android.util.Pair[])}.
This method gives the Activity the ability to delay starting the entering and shared element transitions until all data is loaded. Until then, the Activity won't draw into its window, leaving the window transparent. This may also cause the returning animation to be delayed until data is ready. This method should be called in {@link #onCreate(android.os.Bundle)} or in {@link #onActivityReenter(int, android.content.Intent)}. {@link #startPostponedEnterTransition()} must be called to allow the Activity to start the transitions. If the Activity did not use {@link android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, android.util.Pair[])}, then this method does nothing.
mActivityTransitionState.postponeEnterTransition();
public void recreate()
Cause this Activity to be recreated with a new instance. This results in essentially the same flow as when the Activity is created due to a configuration change -- the current instance will go through its lifecycle to {@link #onDestroy} and a new instance then created after it.
if (mParent != null) { throw new IllegalStateException("Can only be called on top-level activity"); } if (Looper.myLooper() != mMainThread.getLooper()) { throw new IllegalStateException("Must be called from main thread"); } mMainThread.requestRelaunchActivity(mToken, null, null, 0, false, null, false);
public void registerForContextMenu(android.view.View view)
Registers a context menu to be shown for the given view (multiple views can show the context menu). This method will set the {@link OnCreateContextMenuListener} on the view to this activity, so {@link #onCreateContextMenu(ContextMenu, View, ContextMenuInfo)} will be called when it is time to show the context menu.
see
#unregisterForContextMenu(View)
param
view The view that should show a context menu.
view.setOnCreateContextMenuListener(this);
public boolean releaseInstance()
Ask that the local app instance of this activity be released to free up its memory. This is asking for the activity to be destroyed, but does not finish the activity -- a new instance of the activity will later be re-created if needed due to the user navigating back to it.
return
Returns true if the activity was in a state that it has started the process of destroying its current instance; returns false if for any reason this could not be done: it is currently visible to the user, it is already being destroyed, it is being finished, it hasn't yet saved its state, etc.
try { return ActivityManagerNative.getDefault().releaseActivityInstance(mToken); } catch (RemoteException e) { // Empty } return false;
public final void removeDialog(int id)
Removes any internal references to a dialog managed by this Activity. If the dialog is showing, it will dismiss it as part of the clean up.
This can be useful if you know that you will never show a dialog again and want to avoid the overhead of saving and restoring it in the future.
As of {@link android.os.Build.VERSION_CODES#GINGERBREAD}, this function will not throw an exception if you try to remove an ID that does not currently have an associated dialog.
param
id The id of the managed dialog.
see
#onCreateDialog(int, Bundle)
see
#onPrepareDialog(int, Dialog, Bundle)
see
#showDialog(int)
see
#dismissDialog(int)
deprecated
Use the new {@link DialogFragment} class with {@link FragmentManager} instead; this is also available on older platforms through the Android compatibility package.
if (mManagedDialogs != null) { final ManagedDialog md = mManagedDialogs.get(id); if (md != null) { md.mDialog.dismiss(); mManagedDialogs.remove(id); } }
public void reportFullyDrawn()
Report to the system that your app is now fully drawn, purely for diagnostic purposes (calling it does not impact the visible behavior of the activity). This is only used to help instrument application launch times, so that the app can report when it is fully in a usable state; without this, the only thing the system itself can determine is the point at which the activity's window is first drawn and displayed. To participate in app launch time measurement, you should always call this method after first launch (when {@link #onCreate(android.os.Bundle)} is called), at the point where you have entirely drawn your UI and populated with all of the significant data. You can safely call this method any time after first launch as well, in which case it will simply be ignored.
if (mDoReportFullyDrawn) { mDoReportFullyDrawn = false; try { ActivityManagerNative.getDefault().reportActivityFullyDrawn(mToken); } catch (RemoteException e) { } }
public boolean requestVisibleBehind(boolean visible)
Activities that want to remain visible behind a translucent activity above them must call this method anytime between the start of {@link #onResume()} and the return from {@link #onPause()}. If this call is successful then the activity will remain visible after {@link #onPause()} is called, and is allowed to continue playing media in the background.
The actions of this call are reset each time that this activity is brought to the front. That is, every time {@link #onResume()} is called the activity will be assumed to not have requested visible behind. Therefore, if you want this activity to continue to be visible in the background you must call this method again.
Only fullscreen opaque activities may make this call. I.e. this call is a nop for dialog and translucent activities.
Under all circumstances, the activity must stop playing and release resources prior to or within a call to {@link #onVisibleBehindCanceled()} or if this call returns false.
False will be returned any time this method is called between the return of onPause and the next call to onResume.
param
visible true to notify the system that the activity wishes to be visible behind other translucent activities, false to indicate otherwise. Resources must be released when passing false to this method.
return
the resulting visibiity state. If true the activity will remain visible beyond {@link #onPause()} if the next activity is translucent or not fullscreen. If false then the activity may not count on being visible behind other translucent activities, and must stop any media playback and release resources. Returning false may occur in lieu of a call to {@link #onVisibleBehindCanceled()} so the return value must be checked.
see
#onVisibleBehindCanceled()
see
#onBackgroundVisibleBehindChanged(boolean)
if (!mResumed) { // Do not permit paused or stopped activities to do this. visible = false; } try { mVisibleBehind = ActivityManagerNative.getDefault() .requestVisibleBehind(mToken, visible) && visible; } catch (RemoteException e) { mVisibleBehind = false; } return mVisibleBehind;
public final boolean requestWindowFeature(int featureId)
Enable extended window features. This is a convenience for calling {@link android.view.Window#requestFeature getWindow().requestFeature()}.
param
featureId The desired feature as defined in {@link android.view.Window}.
return
Returns true if the requested feature is supported and now enabled.
see
android.view.Window#requestFeature
return getWindow().requestFeature(featureId);
private void restoreManagedDialogs(android.os.Bundle savedInstanceState)
Restore the state of any saved managed dialogs.
param
savedInstanceState The bundle to restore from.
final Bundle b = savedInstanceState.getBundle(SAVED_DIALOGS_TAG); if (b == null) { return; } final int[] ids = b.getIntArray(SAVED_DIALOG_IDS_KEY); final int numDialogs = ids.length; mManagedDialogs = new SparseArray<ManagedDialog>(numDialogs); for (int i = 0; i < numDialogs; i++) { final Integer dialogId = ids[i]; Bundle dialogState = b.getBundle(savedDialogKeyFor(dialogId)); if (dialogState != null) { // Calling onRestoreInstanceState() below will invoke dispatchOnCreate // so tell createDialog() not to do it, otherwise we get an exception final ManagedDialog md = new ManagedDialog(); md.mArgs = b.getBundle(savedDialogArgsKeyFor(dialogId)); md.mDialog = createDialog(dialogId, dialogState, md.mArgs); if (md.mDialog != null) { mManagedDialogs.put(dialogId, md); onPrepareDialog(dialogId, md.mDialog, md.mArgs); md.mDialog.onRestoreInstanceState(dialogState); } } }
android.app.Activity$NonConfigurationInstances retainNonConfigurationInstances()
Object activity = onRetainNonConfigurationInstance(); HashMap<String, Object> children = onRetainNonConfigurationChildInstances(); ArrayList<Fragment> fragments = mFragments.retainNonConfig(); boolean retainLoaders = false; if (mAllLoaderManagers != null) { // prune out any loader managers that were already stopped and so // have nothing useful to retain. final int N = mAllLoaderManagers.size(); LoaderManagerImpl loaders[] = new LoaderManagerImpl[N]; for (int i=N-1; i>=0; i--) { loaders[i] = mAllLoaderManagers.valueAt(i); } for (int i=0; i<N; i++) { LoaderManagerImpl lm = loaders[i]; if (lm.mRetaining) { retainLoaders = true; } else { lm.doDestroy(); mAllLoaderManagers.remove(lm.mWho); } } } if (activity == null && children == null && fragments == null && !retainLoaders && mVoiceInteractor == null) { return null; } NonConfigurationInstances nci = new NonConfigurationInstances(); nci.activity = activity; nci.children = children; nci.fragments = fragments; nci.loaders = mAllLoaderManagers; nci.voiceInteractor = mVoiceInteractor; return nci;
public final void runOnUiThread(java.lang.Runnable action)
Runs the specified action on the UI thread. If the current thread is the UI thread, then the action is executed immediately. If the current thread is not the UI thread, the action is posted to the event queue of the UI thread.
param
action the action to run on the UI thread
if (Thread.currentThread() != mUiThread) { mHandler.post(action); } else { action.run(); }
private void saveManagedDialogs(android.os.Bundle outState)
Save the state of any managed dialogs.
param
outState place to store the saved state.
if (mManagedDialogs == null) { return; } final int numDialogs = mManagedDialogs.size(); if (numDialogs == 0) { return; } Bundle dialogState = new Bundle(); int[] ids = new int[mManagedDialogs.size()]; // save each dialog's bundle, gather the ids for (int i = 0; i < numDialogs; i++) { final int key = mManagedDialogs.keyAt(i); ids[i] = key; final ManagedDialog md = mManagedDialogs.valueAt(i); dialogState.putBundle(savedDialogKeyFor(key), md.mDialog.onSaveInstanceState()); if (md.mArgs != null) { dialogState.putBundle(savedDialogArgsKeyFor(key), md.mArgs); } } dialogState.putIntArray(SAVED_DIALOG_IDS_KEY, ids); outState.putBundle(SAVED_DIALOGS_TAG, dialogState);
private static java.lang.String savedDialogArgsKeyFor(int key)
return SAVED_DIALOG_ARGS_KEY_PREFIX + key;
private static java.lang.String savedDialogKeyFor(int key)
return SAVED_DIALOG_KEY_PREFIX + key;
public void setActionBar(android.widget.Toolbar toolbar)
Set a {@link android.widget.Toolbar Toolbar} to act as the {@link ActionBar} for this Activity window.
When set to a non-null value the {@link #getActionBar()} method will return an {@link ActionBar} object that can be used to control the given toolbar as if it were a traditional window decor action bar. The toolbar's menu will be populated with the Activity's options menu and the navigation button will be wired through the standard {@link android.R.id#home home} menu select action.

In order to use a Toolbar within the Activity's window content the application must not request the window feature {@link Window#FEATURE_ACTION_BAR FEATURE_ACTION_BAR}.
param
toolbar Toolbar to set as the Activity's action bar
if (getActionBar() instanceof WindowDecorActionBar) { throw new IllegalStateException("This Activity already has an action bar supplied " + "by the window decor. Do not request Window.FEATURE_ACTION_BAR and set " + "android:windowActionBar to false in your theme to use a Toolbar instead."); } ToolbarActionBar tbab = new ToolbarActionBar(toolbar, getTitle(), this); mActionBar = tbab; mWindow.setCallback(tbab.getWrappedWindowCallback()); mActionBar.invalidateOptionsMenu();
public void setContentTransitionManager(android.transition.TransitionManager tm)
Set the {@link TransitionManager} to use for default transitions in this window. Requires {@link Window#FEATURE_CONTENT_TRANSITIONS}.
param
tm The TransitionManager to use for scene changes.
getWindow().setTransitionManager(tm);
public void setContentView(int layoutResID)
Set the activity content from a layout resource. The resource will be inflated, adding all top-level views to the activity.
param
layoutResID Resource ID to be inflated.
see
#setContentView(android.view.View)
see
#setContentView(android.view.View, android.view.ViewGroup.LayoutParams)
getWindow().setContentView(layoutResID); initWindowDecorActionBar();
public void setContentView(android.view.View view)
Set the activity content to an explicit view. This view is placed directly into the activity's view hierarchy. It can itself be a complex view hierarchy. When calling this method, the layout parameters of the specified view are ignored. Both the width and the height of the view are set by default to {@link ViewGroup.LayoutParams#MATCH_PARENT}. To use your own layout parameters, invoke {@link #setContentView(android.view.View, android.view.ViewGroup.LayoutParams)} instead.
param
view The desired content to display.
see
#setContentView(int)
see
#setContentView(android.view.View, android.view.ViewGroup.LayoutParams)
getWindow().setContentView(view); initWindowDecorActionBar();
public void setContentView(android.view.View view, android.view.ViewGroup.LayoutParams params)
Set the activity content to an explicit view. This view is placed directly into the activity's view hierarchy. It can itself be a complex view hierarchy.
param
view The desired content to display.
param
params Layout parameters for the view.
see
#setContentView(android.view.View)
see
#setContentView(int)
getWindow().setContentView(view, params); initWindowDecorActionBar();
public final void setDefaultKeyMode(int mode)
Select the default key handling for this activity. This controls what will happen to key events that are not otherwise handled. The default mode ({@link #DEFAULT_KEYS_DISABLE}) will simply drop them on the floor. Other modes allow you to launch the dialer ({@link #DEFAULT_KEYS_DIALER}), execute a shortcut in your options menu without requiring the menu key be held down ({@link #DEFAULT_KEYS_SHORTCUT}), or launch a search ({@link #DEFAULT_KEYS_SEARCH_LOCAL} and {@link #DEFAULT_KEYS_SEARCH_GLOBAL}).
Note that the mode selected here does not impact the default handling of system keys, such as the "back" and "menu" keys, and your activity and its views always get a first chance to receive and handle all application keys.
param
mode The desired default key mode constant.
see
#DEFAULT_KEYS_DISABLE
see
#DEFAULT_KEYS_DIALER
see
#DEFAULT_KEYS_SHORTCUT
see
#DEFAULT_KEYS_SEARCH_LOCAL
see
#DEFAULT_KEYS_SEARCH_GLOBAL
see
#onKeyDown
mDefaultKeyMode = mode; // Some modes use a SpannableStringBuilder to track & dispatch input events // This list must remain in sync with the switch in onKeyDown() switch (mode) { case DEFAULT_KEYS_DISABLE: case DEFAULT_KEYS_SHORTCUT: mDefaultKeySsb = null; // not used in these modes break; case DEFAULT_KEYS_DIALER: case DEFAULT_KEYS_SEARCH_LOCAL: case DEFAULT_KEYS_SEARCH_GLOBAL: mDefaultKeySsb = new SpannableStringBuilder(); Selection.setSelection(mDefaultKeySsb,0); break; default: throw new IllegalArgumentException(); }
public void setEnterSharedElementCallback(SharedElementCallback callback)
When {@link android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, android.view.View, String)} was used to start an Activity, callback will be called to handle shared elements on the launched Activity. This requires {@link Window#FEATURE_ACTIVITY_TRANSITIONS}.
param
callback Used to manipulate shared element transitions on the launched Activity.
if (callback == null) { callback = SharedElementCallback.NULL_CALLBACK; } mEnterTransitionListener = callback;
public void setExitSharedElementCallback(SharedElementCallback callback)
When {@link android.app.ActivityOptions#makeSceneTransitionAnimation(Activity, android.view.View, String)} was used to start an Activity, callback will be called to handle shared elements on the launching Activity. Most calls will only come when returning from the started Activity. This requires {@link Window#FEATURE_ACTIVITY_TRANSITIONS}.
param
callback Used to manipulate shared element transitions on the launching Activity.
if (callback == null) { callback = SharedElementCallback.NULL_CALLBACK; } mExitTransitionListener = callback;
public final void setFeatureDrawable(int featureId, android.graphics.drawable.Drawable drawable)
Convenience for calling {@link android.view.Window#setFeatureDrawable(int, Drawable)}.
getWindow().setFeatureDrawable(featureId, drawable);
public final void setFeatureDrawableAlpha(int featureId, int alpha)
Convenience for calling {@link android.view.Window#setFeatureDrawableAlpha}.
getWindow().setFeatureDrawableAlpha(featureId, alpha);
public final void setFeatureDrawableResource(int featureId, int resId)
Convenience for calling {@link android.view.Window#setFeatureDrawableResource}.
getWindow().setFeatureDrawableResource(featureId, resId);
public final void setFeatureDrawableUri(int featureId, android.net.Uri uri)
Convenience for calling {@link android.view.Window#setFeatureDrawableUri}.
getWindow().setFeatureDrawableUri(featureId, uri);
public void setFinishOnTouchOutside(boolean finish)
Sets whether this activity is finished when touched outside its window's bounds.
mWindow.setCloseOnTouchOutside(finish);
public void setImmersive(boolean i)
Adjust the current immersive mode setting. Note that changing this value will have no effect on the activity's {@link android.content.pm.ActivityInfo} structure; that is, if android:immersive is set to true in the application's manifest entry for this activity, the {@link android.content.pm.ActivityInfo#flags ActivityInfo.flags} member will always have its {@link android.content.pm.ActivityInfo#FLAG_IMMERSIVE FLAG_IMMERSIVE} bit set.
see
#isImmersive()
see
android.content.pm.ActivityInfo#FLAG_IMMERSIVE
try { ActivityManagerNative.getDefault().setImmersive(mToken, i); } catch (RemoteException e) { // pass }
public void setIntent(android.content.Intent newIntent)
Change the intent returned by {@link #getIntent}. This holds a reference to the given intent; it does not copy it. Often used in conjunction with {@link #onNewIntent}.
param
newIntent The new Intent object to return from getIntent
see
#getIntent
see
#onNewIntent
mIntent = newIntent;
public final void setMediaController(android.media.session.MediaController controller)
Sets a {@link MediaController} to send media keys and volume changes to.
The controller will be tied to the window of this Activity. Media key and volume events which are received while the Activity is in the foreground will be forwarded to the controller and used to invoke transport controls or adjust the volume. This may be used instead of or in addition to {@link #setVolumeControlStream} to affect a specific session instead of a specific stream.
It is not guaranteed that the hardware volume controls will always change this session's volume (for example, if a call is in progress, its stream's volume may be changed instead). To reset back to the default use null as the controller.
param
controller The controller for the session which should receive media keys and volume changes.
getWindow().setMediaController(controller);
final void setParent(android.app.Activity parent)
mParent = parent;
public void setPersistent(boolean isPersistent)
deprecated
As of {@link android.os.Build.VERSION_CODES#GINGERBREAD} this is a no-op.
hide

public final void setProgress(int progress)
Sets the progress for the progress bars in the title.
In order for the progress bar to be shown, the feature must be requested via {@link #requestWindowFeature(int)}.
param
progress The progress for the progress bar. Valid ranges are from 0 to 10000 (both inclusive). If 10000 is given, the progress bar will be completely filled and will fade out.
getWindow().setFeatureInt(Window.FEATURE_PROGRESS, progress + Window.PROGRESS_START);
public final void setProgressBarIndeterminate(boolean indeterminate)
Sets whether the horizontal progress bar in the title should be indeterminate (the circular is always indeterminate).
In order for the progress bar to be shown, the feature must be requested via {@link #requestWindowFeature(int)}.
param
indeterminate Whether the horizontal progress bar should be indeterminate.
getWindow().setFeatureInt(Window.FEATURE_PROGRESS, indeterminate ? Window.PROGRESS_INDETERMINATE_ON : Window.PROGRESS_INDETERMINATE_OFF);
public final void setProgressBarIndeterminateVisibility(boolean visible)
Sets the visibility of the indeterminate progress bar in the title.
In order for the progress bar to be shown, the feature must be requested via {@link #requestWindowFeature(int)}.
param
visible Whether to show the progress bars in the title.
getWindow().setFeatureInt(Window.FEATURE_INDETERMINATE_PROGRESS, visible ? Window.PROGRESS_VISIBILITY_ON : Window.PROGRESS_VISIBILITY_OFF);
public final void setProgressBarVisibility(boolean visible)
Sets the visibility of the progress bar in the title.
In order for the progress bar to be shown, the feature must be requested via {@link #requestWindowFeature(int)}.
param
visible Whether to show the progress bars in the title.
getWindow().setFeatureInt(Window.FEATURE_PROGRESS, visible ? Window.PROGRESS_VISIBILITY_ON : Window.PROGRESS_VISIBILITY_OFF);
public void setRequestedOrientation(int requestedOrientation)
Change the desired orientation of this activity. If the activity is currently in the foreground or otherwise impacting the screen orientation, the screen will immediately be changed (possibly causing the activity to be restarted). Otherwise, this will be used the next time the activity is visible.
param
requestedOrientation An orientation constant as used in {@link ActivityInfo#screenOrientation ActivityInfo.screenOrientation}.
if (mParent == null) { try { ActivityManagerNative.getDefault().setRequestedOrientation( mToken, requestedOrientation); } catch (RemoteException e) { // Empty } } else { mParent.setRequestedOrientation(requestedOrientation); }
public final void setResult(int resultCode)
Call this to set the result that your activity will return to its caller.
param
resultCode The result code to propagate back to the originating activity, often RESULT_CANCELED or RESULT_OK
see
#RESULT_CANCELED
see
#RESULT_OK
see
#RESULT_FIRST_USER
see
#setResult(int, Intent)
synchronized (this) { mResultCode = resultCode; mResultData = null; }
public final void setResult(int resultCode, android.content.Intent data)
Call this to set the result that your activity will return to its caller.
As of {@link android.os.Build.VERSION_CODES#GINGERBREAD}, the Intent you supply here can have {@link Intent#FLAG_GRANT_READ_URI_PERMISSION Intent.FLAG_GRANT_READ_URI_PERMISSION} and/or {@link Intent#FLAG_GRANT_WRITE_URI_PERMISSION Intent.FLAG_GRANT_WRITE_URI_PERMISSION} set. This will grant the Activity receiving the result access to the specific URIs in the Intent. Access will remain until the Activity has finished (it will remain across the hosting process being killed and other temporary destruction) and will be added to any existing set of URI permissions it already holds.
param
resultCode The result code to propagate back to the originating activity, often RESULT_CANCELED or RESULT_OK
param
data The data to propagate back to the originating activity.
see
#RESULT_CANCELED
see
#RESULT_OK
see
#RESULT_FIRST_USER
see
#setResult(int)
synchronized (this) { mResultCode = resultCode; mResultData = data; }
public final void setSecondaryProgress(int secondaryProgress)
Sets the secondary progress for the progress bar in the title. This progress is drawn between the primary progress (set via {@link #setProgress(int)} and the background. It can be ideal for media scenarios such as showing the buffering progress while the default progress shows the play progress.
In order for the progress bar to be shown, the feature must be requested via {@link #requestWindowFeature(int)}.
param
secondaryProgress The secondary progress for the progress bar. Valid ranges are from 0 to 10000 (both inclusive).
getWindow().setFeatureInt(Window.FEATURE_PROGRESS, secondaryProgress + Window.PROGRESS_SECONDARY_START);
public void setTaskDescription(ActivityManager.TaskDescription taskDescription)
Sets information describing the task with this activity for presentation inside the Recents System UI. When {@link ActivityManager#getRecentTasks} is called, the activities of each task are traversed in order from the topmost activity to the bottommost. The traversal continues for each property until a suitable value is found. For each task the taskDescription will be returned in {@link android.app.ActivityManager.TaskDescription}.
see
ActivityManager#getRecentTasks
see
android.app.ActivityManager.TaskDescription
param
taskDescription The TaskDescription properties that describe the task with this activity
ActivityManager.TaskDescription td; // Scale the icon down to something reasonable if it is provided if (taskDescription.getIconFilename() == null && taskDescription.getIcon() != null) { final int size = ActivityManager.getLauncherLargeIconSizeInner(this); final Bitmap icon = Bitmap.createScaledBitmap(taskDescription.getIcon(), size, size, true); td = new ActivityManager.TaskDescription(taskDescription.getLabel(), icon, taskDescription.getPrimaryColor()); } else { td = taskDescription; } try { ActivityManagerNative.getDefault().setTaskDescription(mToken, td); } catch (RemoteException e) { }
public void setTitle(java.lang.CharSequence title)
Change the title associated with this activity. If this is a top-level activity, the title for its window will change. If it is an embedded activity, the parent can do whatever it wants with it.
mTitle = title; onTitleChanged(title, mTitleColor); if (mParent != null) { mParent.onChildTitleChanged(this, title); }
public void setTitle(int titleId)
Change the title associated with this activity. If this is a top-level activity, the title for its window will change. If it is an embedded activity, the parent can do whatever it wants with it.
setTitle(getText(titleId));
public void setTitleColor(int textColor)
Change the color of the title associated with this activity.
This method is deprecated starting in API Level 11 and replaced by action bar styles. For information on styling the Action Bar, read the Action Bar developer guide.
deprecated
Use action bar styles instead.
mTitleColor = textColor; onTitleChanged(mTitle, textColor);
public void setVisible(boolean visible)
Control whether this activity's main window is visible. This is intended only for the special case of an activity that is not going to show a UI itself, but can't just finish prior to onResume() because it needs to wait for a service binding or such. Setting this to false allows you to prevent your UI from being shown during that time.
The default value for this is taken from the {@link android.R.attr#windowNoDisplay} attribute of the activity's theme.
if (mVisibleFromClient != visible) { mVisibleFromClient = visible; if (mVisibleFromServer) { if (visible) makeVisible(); else mDecor.setVisibility(View.INVISIBLE); } }
public final void setVolumeControlStream(int streamType)
Suggests an audio stream whose volume should be changed by the hardware volume controls.
The suggested audio stream will be tied to the window of this Activity. Volume requests which are received while the Activity is in the foreground will affect this stream.
It is not guaranteed that the hardware volume controls will always change this stream's volume (for example, if a call is in progress, its stream's volume may be changed instead). To reset back to the default, use {@link AudioManager#USE_DEFAULT_STREAM_TYPE}.
param
streamType The type of the audio stream whose volume should be changed by the hardware volume controls.
getWindow().setVolumeControlStream(streamType);
public boolean shouldUpRecreateTask(android.content.Intent targetIntent)
Returns true if the app should recreate the task when navigating 'up' from this activity by using targetIntent.
If this method returns false the app can trivially call {@link #navigateUpTo(Intent)} using the same parameters to correctly perform up navigation. If this method returns false, the app should synthesize a new task stack by using {@link TaskStackBuilder} or another similar mechanism to perform up navigation.
param
targetIntent An intent representing the target destination for up navigation
return
true if navigating up should recreate a new task stack, false if the same task should be used for the destination
try { PackageManager pm = getPackageManager(); ComponentName cn = targetIntent.getComponent(); if (cn == null) { cn = targetIntent.resolveActivity(pm); } ActivityInfo info = pm.getActivityInfo(cn, 0); if (info.taskAffinity == null) { return false; } return ActivityManagerNative.getDefault() .shouldUpRecreateTask(mToken, info.taskAffinity); } catch (RemoteException e) { return false; } catch (NameNotFoundException e) { return false; }
public final void showDialog(int id)
Simple version of {@link #showDialog(int, Bundle)} that does not take any arguments. Simply calls {@link #showDialog(int, Bundle)} with null arguments.
deprecated
Use the new {@link DialogFragment} class with {@link FragmentManager} instead; this is also available on older platforms through the Android compatibility package.
showDialog(id, null);
public final boolean showDialog(int id, android.os.Bundle args)
Show a dialog managed by this activity. A call to {@link #onCreateDialog(int, Bundle)} will be made with the same id the first time this is called for a given id. From thereafter, the dialog will be automatically saved and restored. If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} or later, consider instead using a {@link DialogFragment} instead.
Each time a dialog is shown, {@link #onPrepareDialog(int, Dialog, Bundle)} will be made to provide an opportunity to do any timely preparation.
param
id The id of the managed dialog.
param
args Arguments to pass through to the dialog. These will be saved and restored for you. Note that if the dialog is already created, {@link #onCreateDialog(int, Bundle)} will not be called with the new arguments but {@link #onPrepareDialog(int, Dialog, Bundle)} will be. If you need to rebuild the dialog, call {@link #removeDialog(int)} first.
return
Returns true if the Dialog was created; false is returned if it is not created because {@link #onCreateDialog(int, Bundle)} returns false.
see
Dialog
see
#onCreateDialog(int, Bundle)
see
#onPrepareDialog(int, Dialog, Bundle)
see
#dismissDialog(int)
see
#removeDialog(int)
deprecated
Use the new {@link DialogFragment} class with {@link FragmentManager} instead; this is also available on older platforms through the Android compatibility package.
if (mManagedDialogs == null) { mManagedDialogs = new SparseArray<ManagedDialog>(); } ManagedDialog md = mManagedDialogs.get(id); if (md == null) { md = new ManagedDialog(); md.mDialog = createDialog(id, null, args); if (md.mDialog == null) { return false; } mManagedDialogs.put(id, md); } md.mArgs = args; onPrepareDialog(id, md.mDialog, args); md.mDialog.show(); return true;
public android.view.ActionMode startActionMode(ActionMode.Callback callback)
Start an action mode.
param
callback Callback that will manage lifecycle events for this context mode
return
The ContextMode that was started, or null if it was canceled
see
ActionMode
return mWindow.getDecorView().startActionMode(callback);
public void startActivities(android.content.Intent[] intents)
Same as {@link #startActivities(Intent[], Bundle)} with no options specified.
param
intents The intents to start.
throws
android.content.ActivityNotFoundException
see
{@link #startActivities(Intent[], Bundle)}
see
#startActivityForResult
startActivities(intents, null);
public void startActivities(android.content.Intent[] intents, android.os.Bundle options)
Launch a new activity. You will not receive any information about when the activity exits. This implementation overrides the base version, providing information about the activity performing the launch. Because of this additional information, the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag is not required; if not specified, the new activity will be added to the task of the caller.
This method throws {@link android.content.ActivityNotFoundException} if there was no Activity found to run the given Intent.
param
intents The intents to start.
param
options Additional options for how the Activity should be started. See {@link android.content.Context#startActivity(Intent, Bundle) Context.startActivity(Intent, Bundle)} for more details.
throws
android.content.ActivityNotFoundException
see
{@link #startActivities(Intent[])}
see
#startActivityForResult
mInstrumentation.execStartActivities(this, mMainThread.getApplicationThread(), mToken, this, intents, options);
public void startActivity(android.content.Intent intent)
Same as {@link #startActivity(Intent, Bundle)} with no options specified.
param
intent The intent to start.
throws
android.content.ActivityNotFoundException
see
{@link #startActivity(Intent, Bundle)}
see
#startActivityForResult
this.startActivity(intent, null);
public void startActivity(android.content.Intent intent, android.os.Bundle options)
Launch a new activity. You will not receive any information about when the activity exits. This implementation overrides the base version, providing information about the activity performing the launch. Because of this additional information, the {@link Intent#FLAG_ACTIVITY_NEW_TASK} launch flag is not required; if not specified, the new activity will be added to the task of the caller.
This method throws {@link android.content.ActivityNotFoundException} if there was no Activity found to run the given Intent.
param
intent The intent to start.
param
options Additional options for how the Activity should be started. See {@link android.content.Context#startActivity(Intent, Bundle) Context.startActivity(Intent, Bundle)} for more details.
throws
android.content.ActivityNotFoundException
see
{@link #startActivity(Intent)}
see
#startActivityForResult
if (options != null) { startActivityForResult(intent, -1, options); } else { // Note we want to go through this call for compatibility with // applications that may have overridden the method. startActivityForResult(intent, -1); }
public void startActivityAsCaller(android.content.Intent intent, android.os.Bundle options, int userId)
Start a new activity as if it was started by the activity that started our current activity. This is for the resolver and chooser activities, which operate as intermediaries that dispatch their intent to the target the user selects -- to do this, they must perform all security checks including permission grants as if their launch had come from the original activity.
hide
if (mParent != null) { throw new RuntimeException("Can't be called from a child"); } Instrumentation.ActivityResult ar = mInstrumentation.execStartActivityAsCaller( this, mMainThread.getApplicationThread(), mToken, this, intent, -1, options, userId); if (ar != null) { mMainThread.sendActivityResult( mToken, mEmbeddedID, -1, ar.getResultCode(), ar.getResultData()); }
public void startActivityAsUser(android.content.Intent intent, android.os.UserHandle user)
hide
Implement to provide correct calling token.
startActivityAsUser(intent, null, user);
public void startActivityAsUser(android.content.Intent intent, android.os.Bundle options, android.os.UserHandle user)
hide
Implement to provide correct calling token.
if (mParent != null) { throw new RuntimeException("Can't be called from a child"); } Instrumentation.ActivityResult ar = mInstrumentation.execStartActivity( this, mMainThread.getApplicationThread(), mToken, this, intent, -1, options, user); if (ar != null) { mMainThread.sendActivityResult( mToken, mEmbeddedID, -1, ar.getResultCode(), ar.getResultData()); }
public void startActivityForResult(android.content.Intent intent, int requestCode)
Same as calling {@link #startActivityForResult(Intent, int, Bundle)} with no options.
param
intent The intent to start.
param
requestCode If >= 0, this code will be returned in onActivityResult() when the activity exits.
throws
android.content.ActivityNotFoundException
see
#startActivity
startActivityForResult(intent, requestCode, null);
public void startActivityForResult(android.content.Intent intent, int requestCode, android.os.Bundle options)
Launch an activity for which you would like a result when it finished. When this activity exits, your onActivityResult() method will be called with the given requestCode. Using a negative requestCode is the same as calling {@link #startActivity} (the activity is not launched as a sub-activity).
Note that this method should only be used with Intent protocols that are defined to return a result. In other protocols (such as {@link Intent#ACTION_MAIN} or {@link Intent#ACTION_VIEW}), you may not get the result when you expect. For example, if the activity you are launching uses the singleTask launch mode, it will not run in your task and thus you will immediately receive a cancel result.
As a special case, if you call startActivityForResult() with a requestCode >= 0 during the initial onCreate(Bundle savedInstanceState)/onResume() of your activity, then your window will not be displayed until a result is returned back from the started activity. This is to avoid visible flickering when redirecting to another activity.
This method throws {@link android.content.ActivityNotFoundException} if there was no Activity found to run the given Intent.
param
intent The intent to start.
param
requestCode If >= 0, this code will be returned in onActivityResult() when the activity exits.
param
options Additional options for how the Activity should be started. See {@link android.content.Context#startActivity(Intent, Bundle) Context.startActivity(Intent, Bundle)} for more details.
throws
android.content.ActivityNotFoundException
see
#startActivity
if (mParent == null) { Instrumentation.ActivityResult ar = mInstrumentation.execStartActivity( this, mMainThread.getApplicationThread(), mToken, this, intent, requestCode, options); if (ar != null) { mMainThread.sendActivityResult( mToken, mEmbeddedID, requestCode, ar.getResultCode(), ar.getResultData()); } if (requestCode >= 0) { // If this start is requesting a result, we can avoid making // the activity visible until the result is received. Setting // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the // activity hidden during this time, to avoid flickering. // This can only be done when a result is requested because // that guarantees we will get information back when the // activity is finished, no matter what happens to it. mStartedActivity = true; } final View decor = mWindow != null ? mWindow.peekDecorView() : null; if (decor != null) { decor.cancelPendingInputEvents(); } // TODO Consider clearing/flushing other event sources and events for child windows. } else { if (options != null) { mParent.startActivityFromChild(this, intent, requestCode, options); } else { // Note we want to go through this method for compatibility with // existing applications that may have overridden it. mParent.startActivityFromChild(this, intent, requestCode); } } if (options != null && !isTopOfTask()) { mActivityTransitionState.startExitOutTransition(this, options); }
public void startActivityForResultAsUser(android.content.Intent intent, int requestCode, android.os.UserHandle user)
hide
Implement to provide correct calling token.
startActivityForResultAsUser(intent, requestCode, null, user);
public void startActivityForResultAsUser(android.content.Intent intent, int requestCode, android.os.Bundle options, android.os.UserHandle user)
hide
Implement to provide correct calling token.
if (options != null) { mActivityTransitionState.startExitOutTransition(this, options); } if (mParent != null) { throw new RuntimeException("Can't be called from a child"); } Instrumentation.ActivityResult ar = mInstrumentation.execStartActivity( this, mMainThread.getApplicationThread(), mToken, this, intent, requestCode, options, user); if (ar != null) { mMainThread.sendActivityResult( mToken, mEmbeddedID, requestCode, ar.getResultCode(), ar.getResultData()); } if (requestCode >= 0) { // If this start is requesting a result, we can avoid making // the activity visible until the result is received. Setting // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the // activity hidden during this time, to avoid flickering. // This can only be done when a result is requested because // that guarantees we will get information back when the // activity is finished, no matter what happens to it. mStartedActivity = true; } final View decor = mWindow != null ? mWindow.peekDecorView() : null; if (decor != null) { decor.cancelPendingInputEvents(); }
public void startActivityFromChild(android.app.Activity child, android.content.Intent intent, int requestCode)
Same as calling {@link #startActivityFromChild(Activity, Intent, int, Bundle)} with no options.
param
child The activity making the call.
param
intent The intent to start.
param
requestCode Reply request code. < 0 if reply is not requested.
throws
android.content.ActivityNotFoundException
see
#startActivity
see
#startActivityForResult
startActivityFromChild(child, intent, requestCode, null);
public void startActivityFromChild(android.app.Activity child, android.content.Intent intent, int requestCode, android.os.Bundle options)
This is called when a child activity of this one calls its {@link #startActivity} or {@link #startActivityForResult} method.
This method throws {@link android.content.ActivityNotFoundException} if there was no Activity found to run the given Intent.
param
child The activity making the call.
param
intent The intent to start.
param
requestCode Reply request code. < 0 if reply is not requested.
param
options Additional options for how the Activity should be started. See {@link android.content.Context#startActivity(Intent, Bundle) Context.startActivity(Intent, Bundle)} for more details.
throws
android.content.ActivityNotFoundException
see
#startActivity
see
#startActivityForResult
Instrumentation.ActivityResult ar = mInstrumentation.execStartActivity( this, mMainThread.getApplicationThread(), mToken, child, intent, requestCode, options); if (ar != null) { mMainThread.sendActivityResult( mToken, child.mEmbeddedID, requestCode, ar.getResultCode(), ar.getResultData()); }
public void startActivityFromFragment(Fragment fragment, android.content.Intent intent, int requestCode)
Same as calling {@link #startActivityFromFragment(Fragment, Intent, int, Bundle)} with no options.
param
fragment The fragment making the call.
param
intent The intent to start.
param
requestCode Reply request code. < 0 if reply is not requested.
throws
android.content.ActivityNotFoundException
see
Fragment#startActivity
see
Fragment#startActivityForResult
startActivityFromFragment(fragment, intent, requestCode, null);
public void startActivityFromFragment(Fragment fragment, android.content.Intent intent, int requestCode, android.os.Bundle options)
This is called when a Fragment in this activity calls its {@link Fragment#startActivity} or {@link Fragment#startActivityForResult} method.
This method throws {@link android.content.ActivityNotFoundException} if there was no Activity found to run the given Intent.
param
fragment The fragment making the call.
param
intent The intent to start.
param
requestCode Reply request code. < 0 if reply is not requested.
param
options Additional options for how the Activity should be started. See {@link android.content.Context#startActivity(Intent, Bundle) Context.startActivity(Intent, Bundle)} for more details.
throws
android.content.ActivityNotFoundException
see
Fragment#startActivity
see
Fragment#startActivityForResult
if (options != null) { mActivityTransitionState.startExitOutTransition(this, options); } Instrumentation.ActivityResult ar = mInstrumentation.execStartActivity( this, mMainThread.getApplicationThread(), mToken, fragment, intent, requestCode, options); if (ar != null) { mMainThread.sendActivityResult( mToken, fragment.mWho, requestCode, ar.getResultCode(), ar.getResultData()); }
public boolean startActivityIfNeeded(android.content.Intent intent, int requestCode)
Same as calling {@link #startActivityIfNeeded(Intent, int, Bundle)} with no options.
param
intent The intent to start.
param
requestCode If >= 0, this code will be returned in onActivityResult() when the activity exits, as described in {@link #startActivityForResult}.
return
If a new activity was launched then true is returned; otherwise false is returned and you must handle the Intent yourself.
see
#startActivity
see
#startActivityForResult
return startActivityIfNeeded(intent, requestCode, null);
public boolean startActivityIfNeeded(android.content.Intent intent, int requestCode, android.os.Bundle options)
A special variation to launch an activity only if a new activity instance is needed to handle the given Intent. In other words, this is just like {@link #startActivityForResult(Intent, int)} except: if you are using the {@link Intent#FLAG_ACTIVITY_SINGLE_TOP} flag, or singleTask or singleTop {@link android.R.styleable#AndroidManifestActivity_launchMode launchMode}, and the activity that handles intent is the same as your currently running activity, then a new instance is not needed. In this case, instead of the normal behavior of calling {@link #onNewIntent} this function will return and you can handle the Intent yourself.
This function can only be called from a top-level activity; if it is called from a child activity, a runtime exception will be thrown.
param
intent The intent to start.
param
requestCode If >= 0, this code will be returned in onActivityResult() when the activity exits, as described in {@link #startActivityForResult}.
param
options Additional options for how the Activity should be started. See {@link android.content.Context#startActivity(Intent, Bundle) Context.startActivity(Intent, Bundle)} for more details.
return
If a new activity was launched then true is returned; otherwise false is returned and you must handle the Intent yourself.
see
#startActivity
see
#startActivityForResult
if (mParent == null) { int result = ActivityManager.START_RETURN_INTENT_TO_CALLER; try { intent.migrateExtraStreamToClipData(); intent.prepareToLeaveProcess(); result = ActivityManagerNative.getDefault() .startActivity(mMainThread.getApplicationThread(), getBasePackageName(), intent, intent.resolveTypeIfNeeded(getContentResolver()), mToken, mEmbeddedID, requestCode, ActivityManager.START_FLAG_ONLY_IF_NEEDED, null, options); } catch (RemoteException e) { // Empty } Instrumentation.checkStartActivityResult(result, intent); if (requestCode >= 0) { // If this start is requesting a result, we can avoid making // the activity visible until the result is received. Setting // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the // activity hidden during this time, to avoid flickering. // This can only be done when a result is requested because // that guarantees we will get information back when the // activity is finished, no matter what happens to it. mStartedActivity = true; } return result != ActivityManager.START_RETURN_INTENT_TO_CALLER; } throw new UnsupportedOperationException( "startActivityIfNeeded can only be called from a top-level activity");
public void startIntentSender(android.content.IntentSender intent, android.content.Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags)
Same as calling {@link #startIntentSender(IntentSender, Intent, int, int, int, Bundle)} with no options.
param
intent The IntentSender to launch.
param
fillInIntent If non-null, this will be provided as the intent parameter to {@link IntentSender#sendIntent}.
param
flagsMask Intent flags in the original IntentSender that you would like to change.
param
flagsValues Desired values for any bits set in flagsMask
param
extraFlags Always set to 0.
startIntentSender(intent, fillInIntent, flagsMask, flagsValues, extraFlags, null);
public void startIntentSender(android.content.IntentSender intent, android.content.Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags, android.os.Bundle options)
Like {@link #startActivity(Intent, Bundle)}, but taking a IntentSender to start; see {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int, Bundle)} for more information.
param
intent The IntentSender to launch.
param
fillInIntent If non-null, this will be provided as the intent parameter to {@link IntentSender#sendIntent}.
param
flagsMask Intent flags in the original IntentSender that you would like to change.
param
flagsValues Desired values for any bits set in flagsMask
param
extraFlags Always set to 0.
param
options Additional options for how the Activity should be started. See {@link android.content.Context#startActivity(Intent, Bundle) Context.startActivity(Intent, Bundle)} for more details. If options have also been supplied by the IntentSender, options given here will override any that conflict with those given by the IntentSender.
if (options != null) { startIntentSenderForResult(intent, -1, fillInIntent, flagsMask, flagsValues, extraFlags, options); } else { // Note we want to go through this call for compatibility with // applications that may have overridden the method. startIntentSenderForResult(intent, -1, fillInIntent, flagsMask, flagsValues, extraFlags); }
public void startIntentSenderForResult(android.content.IntentSender intent, int requestCode, android.content.Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags)
Same as calling {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int, Bundle)} with no options.
param
intent The IntentSender to launch.
param
requestCode If >= 0, this code will be returned in onActivityResult() when the activity exits.
param
fillInIntent If non-null, this will be provided as the intent parameter to {@link IntentSender#sendIntent}.
param
flagsMask Intent flags in the original IntentSender that you would like to change.
param
flagsValues Desired values for any bits set in flagsMask
param
extraFlags Always set to 0.
startIntentSenderForResult(intent, requestCode, fillInIntent, flagsMask, flagsValues, extraFlags, null);
public void startIntentSenderForResult(android.content.IntentSender intent, int requestCode, android.content.Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags, android.os.Bundle options)
Like {@link #startActivityForResult(Intent, int)}, but allowing you to use a IntentSender to describe the activity to be started. If the IntentSender is for an activity, that activity will be started as if you had called the regular {@link #startActivityForResult(Intent, int)} here; otherwise, its associated action will be executed (such as sending a broadcast) as if you had called {@link IntentSender#sendIntent IntentSender.sendIntent} on it.
param
intent The IntentSender to launch.
param
requestCode If >= 0, this code will be returned in onActivityResult() when the activity exits.
param
fillInIntent If non-null, this will be provided as the intent parameter to {@link IntentSender#sendIntent}.
param
flagsMask Intent flags in the original IntentSender that you would like to change.
param
flagsValues Desired values for any bits set in flagsMask
param
extraFlags Always set to 0.
param
options Additional options for how the Activity should be started. See {@link android.content.Context#startActivity(Intent, Bundle) Context.startActivity(Intent, Bundle)} for more details. If options have also been supplied by the IntentSender, options given here will override any that conflict with those given by the IntentSender.
if (mParent == null) { startIntentSenderForResultInner(intent, requestCode, fillInIntent, flagsMask, flagsValues, this, options); } else if (options != null) { mParent.startIntentSenderFromChild(this, intent, requestCode, fillInIntent, flagsMask, flagsValues, extraFlags, options); } else { // Note we want to go through this call for compatibility with // existing applications that may have overridden the method. mParent.startIntentSenderFromChild(this, intent, requestCode, fillInIntent, flagsMask, flagsValues, extraFlags); }
private void startIntentSenderForResultInner(android.content.IntentSender intent, int requestCode, android.content.Intent fillInIntent, int flagsMask, int flagsValues, android.app.Activity activity, android.os.Bundle options)
try { String resolvedType = null; if (fillInIntent != null) { fillInIntent.migrateExtraStreamToClipData(); fillInIntent.prepareToLeaveProcess(); resolvedType = fillInIntent.resolveTypeIfNeeded(getContentResolver()); } int result = ActivityManagerNative.getDefault() .startActivityIntentSender(mMainThread.getApplicationThread(), intent, fillInIntent, resolvedType, mToken, activity.mEmbeddedID, requestCode, flagsMask, flagsValues, options); if (result == ActivityManager.START_CANCELED) { throw new IntentSender.SendIntentException(); } Instrumentation.checkStartActivityResult(result, null); } catch (RemoteException e) { } if (requestCode >= 0) { // If this start is requesting a result, we can avoid making // the activity visible until the result is received. Setting // this code during onCreate(Bundle savedInstanceState) or onResume() will keep the // activity hidden during this time, to avoid flickering. // This can only be done when a result is requested because // that guarantees we will get information back when the // activity is finished, no matter what happens to it. mStartedActivity = true; }
public void startIntentSenderFromChild(android.app.Activity child, android.content.IntentSender intent, int requestCode, android.content.Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags)
Same as calling {@link #startIntentSenderFromChild(Activity, IntentSender, int, Intent, int, int, int, Bundle)} with no options.
startIntentSenderFromChild(child, intent, requestCode, fillInIntent, flagsMask, flagsValues, extraFlags, null);
public void startIntentSenderFromChild(android.app.Activity child, android.content.IntentSender intent, int requestCode, android.content.Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags, android.os.Bundle options)
Like {@link #startActivityFromChild(Activity, Intent, int)}, but taking a IntentSender; see {@link #startIntentSenderForResult(IntentSender, int, Intent, int, int, int)} for more information.
startIntentSenderForResultInner(intent, requestCode, fillInIntent, flagsMask, flagsValues, child, options);
public void startLockTask()
Request to put this Activity in a mode where the user is locked to the current task. This will prevent the user from launching other apps, going to settings, or reaching the home screen. If {@link DevicePolicyManager#isLockTaskPermitted(String)} returns true for this component then the app will go directly into Lock Task mode. The user will not be able to exit this mode until {@link Activity#stopLockTask()} is called. If {@link DevicePolicyManager#isLockTaskPermitted(String)} returns false then the system will prompt the user with a dialog requesting permission to enter this mode. When entered through this method the user can exit at any time through an action described by the request dialog. Calling stopLockTask will also exit the mode.
try { ActivityManagerNative.getDefault().startLockTaskMode(mToken); } catch (RemoteException e) { }
public void startManagingCursor(android.database.Cursor c)
This method allows the activity to take care of managing the given {@link Cursor}'s lifecycle for you based on the activity's lifecycle. That is, when the activity is stopped it will automatically call {@link Cursor#deactivate} on the given Cursor, and when it is later restarted it will call {@link Cursor#requery} for you. When the activity is destroyed, all managed Cursors will be closed automatically. If you are targeting {@link android.os.Build.VERSION_CODES#HONEYCOMB} or later, consider instead using {@link LoaderManager} instead, available via {@link #getLoaderManager()}.
Warning: Do not call {@link Cursor#close()} on cursor obtained from {@link #managedQuery}, because the activity will do that for you at the appropriate time. However, if you call {@link #stopManagingCursor} on a cursor from a managed query, the system will not automatically close the cursor and, in that case, you must call {@link Cursor#close()}.
param
c The Cursor to be managed.
see
#managedQuery(android.net.Uri , String[], String, String[], String)
see
#stopManagingCursor
deprecated
Use the new {@link android.content.CursorLoader} class with {@link LoaderManager} instead; this is also available on older platforms through the Android compatibility package.
synchronized (mManagedCursors) { mManagedCursors.add(new ManagedCursor(c)); }
public boolean startNextMatchingActivity(android.content.Intent intent)
Same as calling {@link #startNextMatchingActivity(Intent, Bundle)} with no options.
param
intent The intent to dispatch to the next activity. For correct behavior, this must be the same as the Intent that started your own activity; the only changes you can make are to the extras inside of it.
return
Returns a boolean indicating whether there was another Activity to start: true if there was a next activity to start, false if there wasn't. In general, if true is returned you will then want to call finish() on yourself.
return startNextMatchingActivity(intent, null);
public boolean startNextMatchingActivity(android.content.Intent intent, android.os.Bundle options)
Special version of starting an activity, for use when you are replacing other activity components. You can use this to hand the Intent off to the next Activity that can handle it. You typically call this in {@link #onCreate} with the Intent returned by {@link #getIntent}.
param
intent The intent to dispatch to the next activity. For correct behavior, this must be the same as the Intent that started your own activity; the only changes you can make are to the extras inside of it.
param
options Additional options for how the Activity should be started. See {@link android.content.Context#startActivity(Intent, Bundle) Context.startActivity(Intent, Bundle)} for more details.
return
Returns a boolean indicating whether there was another Activity to start: true if there was a next activity to start, false if there wasn't. In general, if true is returned you will then want to call finish() on yourself.
if (mParent == null) { try { intent.migrateExtraStreamToClipData(); intent.prepareToLeaveProcess(); return ActivityManagerNative.getDefault() .startNextMatchingActivity(mToken, intent, options); } catch (RemoteException e) { // Empty } return false; } throw new UnsupportedOperationException( "startNextMatchingActivity can only be called from a top-level activity");
public void startPostponedEnterTransition()
Begin postponed transitions after {@link #postponeEnterTransition()} was called. If postponeEnterTransition() was called, you must call startPostponedEnterTransition() to have your Activity start drawing.
mActivityTransitionState.startPostponedEnterTransition();
public void startSearch(java.lang.String initialQuery, boolean selectInitialQuery, android.os.Bundle appSearchData, boolean globalSearch)
This hook is called to launch the search UI.
It is typically called from onSearchRequested(), either directly from Activity.onSearchRequested() or from an overridden version in any given Activity. If your goal is simply to activate search, it is preferred to call onSearchRequested(), which may have been overridden elsewhere in your Activity. If your goal is to inject specific data such as context data, it is preferred to override onSearchRequested(), so that any callers to it will benefit from the override.
param
initialQuery Any non-null non-empty string will be inserted as pre-entered text in the search query box.
param
selectInitialQuery If true, the initial query will be preselected, which means that any further typing will replace it. This is useful for cases where an entire pre-formed query is being inserted. If false, the selection point will be placed at the end of the inserted query. This is useful when the inserted query is text that the user entered, and the user would expect to be able to keep typing. This parameter is only meaningful if initialQuery is a non-empty string.
param
appSearchData An application can insert application-specific context here, in order to improve quality or specificity of its own searches. This data will be returned with SEARCH intent(s). Null if no extra data is required.
param
globalSearch If false, this will only launch the search that has been specifically defined by the application (which is usually defined as a local search). If no default search is defined in the current application or activity, global search will be launched. If true, this will always launch a platform-global (e.g. web-based) search instead.
see
android.app.SearchManager
see
#onSearchRequested
ensureSearchManager(); mSearchManager.startSearch(initialQuery, selectInitialQuery, getComponentName(), appSearchData, globalSearch);
public void stopLockTask()
Allow the user to switch away from the current task. Called to end the mode started by {@link Activity#startLockTask}. This can only be called by activities that have successfully called startLockTask previously. This will allow the user to exit this app and move onto other activities.
try { ActivityManagerNative.getDefault().stopLockTaskMode(); } catch (RemoteException e) { }
public void stopManagingCursor(android.database.Cursor c)
Given a Cursor that was previously given to {@link #startManagingCursor}, stop the activity's management of that cursor.
Warning: After calling this method on a cursor from a managed query, the system will not automatically close the cursor and you must call {@link Cursor#close()}.
param
c The Cursor that was being managed.
see
#startManagingCursor
deprecated
Use the new {@link android.content.CursorLoader} class with {@link LoaderManager} instead; this is also available on older platforms through the Android compatibility package.
synchronized (mManagedCursors) { final int N = mManagedCursors.size(); for (int i=0; i<N; i++) { ManagedCursor mc = mManagedCursors.get(i); if (mc.mCursor == c) { mManagedCursors.remove(i); break; } } }
public void takeKeyEvents(boolean get)
Request that key events come to this activity. Use this if your activity has no views with focus, but the activity still wants a chance to process key events.
see
android.view.Window#takeKeyEvents
getWindow().takeKeyEvents(get);
public void triggerSearch(java.lang.String query, android.os.Bundle appSearchData)
Similar to {@link #startSearch}, but actually fires off the search query after invoking the search dialog. Made available for testing purposes.
param
query The query to trigger. If empty, the request will be ignored.
param
appSearchData An application can insert application-specific context here, in order to improve quality or specificity of its own searches. This data will be returned with SEARCH intent(s). Null if no extra data is required.
ensureSearchManager(); mSearchManager.triggerSearch(query, getComponentName(), appSearchData);
public void unregisterForContextMenu(android.view.View view)
Prevents a context menu to be shown for the given view. This method will remove the {@link OnCreateContextMenuListener} on the view.
see
#registerForContextMenu(View)
param
view The view that should stop showing a context menu.
view.setOnCreateContextMenuListener(null);