ComponentActivity

Kotlin |Java

public class ComponentActivity
extends Activity implements LifecycleOwner, LifecycleOwner, ViewModelStoreOwner, HasDefaultViewModelProviderFactory, SavedStateRegistryOwner, OnBackPressedDispatcherOwner

java.lang.Object
↳	android.content.Context
	↳	android.content.ContextWrapper
		↳	android.view.ContextThemeWrapper
			↳	android.app.Activity
				↳	androidx.activity.ComponentActivity

Known direct subclasses

FragmentActivity

FragmentActivity Base class for activities that want to use the support-based Fragments.

Known indirect subclasses

AppCompatActivity

AppCompatActivity Base class for activities that use the support library action bar features.

Base class for activities that enables composition of higher level components.

Rather than all functionality being built directly into this class, only the minimal set of lower level building blocks are included. Higher level components can then be used as needed without enforcing a deep Activity class hierarchy or strong coupling between components.

Summary

Inherited constants

From class android.app.Activity

`int`	`DEFAULT_KEYS_DIALER`
`int`	`DEFAULT_KEYS_DISABLE`
`int`	`DEFAULT_KEYS_SEARCH_GLOBAL`
`int`	`DEFAULT_KEYS_SEARCH_LOCAL`
`int`	`DEFAULT_KEYS_SHORTCUT`
`int`	`RESULT_CANCELED`
`int`	`RESULT_FIRST_USER`
`int`	`RESULT_OK`

From class android.content.Context

`String`	`ACCESSIBILITY_SERVICE`
`String`	`ACCOUNT_SERVICE`
`String`	`ACTIVITY_SERVICE`
`String`	`ALARM_SERVICE`
`String`	`APPWIDGET_SERVICE`
`String`	`APP_OPS_SERVICE`
`String`	`AUDIO_SERVICE`
`String`	`BATTERY_SERVICE`
`int`	`BIND_ABOVE_CLIENT`
`int`	`BIND_ADJUST_WITH_ACTIVITY`
`int`	`BIND_ALLOW_OOM_MANAGEMENT`
`int`	`BIND_AUTO_CREATE`
`int`	`BIND_DEBUG_UNBIND`
`int`	`BIND_EXTERNAL_SERVICE`
`int`	`BIND_IMPORTANT`
`int`	`BIND_INCLUDE_CAPABILITIES`
`int`	`BIND_NOT_FOREGROUND`
`int`	`BIND_NOT_PERCEPTIBLE`
`int`	`BIND_WAIVE_PRIORITY`
`String`	`BIOMETRIC_SERVICE`
`String`	`BLUETOOTH_SERVICE`
`String`	`CAMERA_SERVICE`
`String`	`CAPTIONING_SERVICE`
`String`	`CARRIER_CONFIG_SERVICE`
`String`	`CLIPBOARD_SERVICE`
`String`	`COMPANION_DEVICE_SERVICE`
`String`	`CONNECTIVITY_SERVICE`
`String`	`CONSUMER_IR_SERVICE`
`int`	`CONTEXT_IGNORE_SECURITY`
`int`	`CONTEXT_INCLUDE_CODE`
`int`	`CONTEXT_RESTRICTED`
`String`	`CROSS_PROFILE_APPS_SERVICE`
`String`	`DEVICE_POLICY_SERVICE`
`String`	`DISPLAY_SERVICE`
`String`	`DOWNLOAD_SERVICE`
`String`	`DROPBOX_SERVICE`
`String`	`EUICC_SERVICE`
`String`	`FINGERPRINT_SERVICE`
`String`	`HARDWARE_PROPERTIES_SERVICE`
`String`	`INPUT_METHOD_SERVICE`
`String`	`INPUT_SERVICE`
`String`	`IPSEC_SERVICE`
`String`	`JOB_SCHEDULER_SERVICE`
`String`	`KEYGUARD_SERVICE`
`String`	`LAUNCHER_APPS_SERVICE`
`String`	`LAYOUT_INFLATER_SERVICE`
`String`	`LOCATION_SERVICE`
`String`	`MEDIA_PROJECTION_SERVICE`
`String`	`MEDIA_ROUTER_SERVICE`
`String`	`MEDIA_SESSION_SERVICE`
`String`	`MIDI_SERVICE`
`int`	`MODE_APPEND`
`int`	`MODE_ENABLE_WRITE_AHEAD_LOGGING`
`int`	`MODE_MULTI_PROCESS`
`int`	`MODE_NO_LOCALIZED_COLLATORS`
`int`	`MODE_PRIVATE`
`int`	`MODE_WORLD_READABLE`
`int`	`MODE_WORLD_WRITEABLE`
`String`	`NETWORK_STATS_SERVICE`
`String`	`NFC_SERVICE`
`String`	`NOTIFICATION_SERVICE`
`String`	`NSD_SERVICE`
`String`	`POWER_SERVICE`
`String`	`PRINT_SERVICE`
`int`	`RECEIVER_VISIBLE_TO_INSTANT_APPS`
`String`	`RESTRICTIONS_SERVICE`
`String`	`ROLE_SERVICE`
`String`	`SEARCH_SERVICE`
`String`	`SENSOR_SERVICE`
`String`	`SHORTCUT_SERVICE`
`String`	`STORAGE_SERVICE`
`String`	`STORAGE_STATS_SERVICE`
`String`	`SYSTEM_HEALTH_SERVICE`
`String`	`TELECOM_SERVICE`
`String`	`TELEPHONY_SERVICE`
`String`	`TELEPHONY_SUBSCRIPTION_SERVICE`
`String`	`TEXT_CLASSIFICATION_SERVICE`
`String`	`TEXT_SERVICES_MANAGER_SERVICE`
`String`	`TV_INPUT_SERVICE`
`String`	`UI_MODE_SERVICE`
`String`	`USAGE_STATS_SERVICE`
`String`	`USB_SERVICE`
`String`	`USER_SERVICE`
`String`	`VIBRATOR_SERVICE`
`String`	`WALLPAPER_SERVICE`
`String`	`WIFI_AWARE_SERVICE`
`String`	`WIFI_P2P_SERVICE`
`String`	`WIFI_RTT_RANGING_SERVICE`
`String`	`WIFI_SERVICE`
`String`	`WINDOW_SERVICE`

From interface android.content.ComponentCallbacks2

`int`	`TRIM_MEMORY_BACKGROUND`
`int`	`TRIM_MEMORY_COMPLETE`
`int`	`TRIM_MEMORY_MODERATE`
`int`	`TRIM_MEMORY_RUNNING_CRITICAL`
`int`	`TRIM_MEMORY_RUNNING_LOW`
`int`	`TRIM_MEMORY_RUNNING_MODERATE`
`int`	`TRIM_MEMORY_UI_HIDDEN`

Inherited fields

From class android.app.Activity


    protected
    static
    final
    int[]

FOCUSED_STATE_SET

Public constructors
`ComponentActivity()` Default constructor for ComponentActivity.
`ComponentActivity(int contentLayoutId)` Alternate constructor that can be used to provide a default layout that will be inflated as part of `super.onCreate(savedInstanceState)`.

Public methods
`boolean`	`dispatchKeyEvent(KeyEvent event)`
`boolean`	`dispatchKeyShortcutEvent(KeyEvent event)`
`ViewModelProvider.Factory`	`getDefaultViewModelProviderFactory()` Returns the default `ViewModelProvider.Factory` that should be used when no custom `Factory` is provided to the `ViewModelProvider` constructors. The extras of `Activity.getIntent()` when this is first called will be used as the defaults to any `SavedStateHandle` passed to a view model created using this factory.
`Object`	`getLastCustomNonConfigurationInstance()` This method is deprecated. Use a `ViewModel` to store non config state.
`Lifecycle`	`getLifecycle()` Returns the Lifecycle of the provider. Overriding this method is no longer supported and this method will be made `final` in a future version of ComponentActivity.
`final OnBackPressedDispatcher`	`getOnBackPressedDispatcher()` Retrieve the `OnBackPressedDispatcher` that will be triggered when `onBackPressed()` is called.
`final SavedStateRegistry`	`getSavedStateRegistry()` Returns owned `SavedStateRegistry`
`ViewModelStore`	`getViewModelStore()` Returns the `ViewModelStore` associated with this activity Overriding this method is no longer supported and this method will be made `final` in a future version of ComponentActivity.
`void`	`onBackPressed()` Called when the activity has detected the user's press of the back key.
`Object`	`onRetainCustomNonConfigurationInstance()` This method is deprecated. Use a `ViewModel` to store non config state.
`final Object`	`onRetainNonConfigurationInstance()` Retain all appropriate non-config state.

Protected methods
`void`	`onCreate(Bundle savedInstanceState)` If your ComponentActivity is annotated with `ContentView`, this will call `Activity.setContentView(int)` for you.
`void`	`onSaveInstanceState(Bundle outState)`

Inherited methods

From class


        
          android.app.Activity

`void`	`addContentView(View arg0, ViewGroup.LayoutParams arg1)`
`void`	`attachBaseContext(Context arg0)`
`void`	`closeContextMenu()`
`void`	`closeOptionsMenu()`
`PendingIntent`	`createPendingResult(int arg0, Intent arg1, int arg2)`
`final void`	`dismissDialog(int arg0)`
`final void`	`dismissKeyboardShortcutsHelper()`
`boolean`	`dispatchGenericMotionEvent(MotionEvent arg0)`
`boolean`	`dispatchKeyEvent(KeyEvent arg0)`
`boolean`	`dispatchKeyShortcutEvent(KeyEvent arg0)`
`boolean`	`dispatchPopulateAccessibilityEvent(AccessibilityEvent arg0)`
`boolean`	`dispatchTouchEvent(MotionEvent arg0)`
`boolean`	`dispatchTrackballEvent(MotionEvent arg0)`
`void`	`dump(String arg0, FileDescriptor arg1, PrintWriter arg2, String[] arg3)`
`boolean`	`enterPictureInPictureMode(PictureInPictureParams arg0)`
`void`	`enterPictureInPictureMode()`
`<T extends View> T`	`findViewById(int arg0)`
`void`	`finish()`
`void`	`finishActivity(int arg0)`
`void`	`finishActivityFromChild(Activity arg0, int arg1)`
`void`	`finishAffinity()`
`void`	`finishAfterTransition()`
`void`	`finishAndRemoveTask()`
`void`	`finishFromChild(Activity arg0)`
`ActionBar`	`getActionBar()`
`final Application`	`getApplication()`
`ComponentName`	`getCallingActivity()`
`String`	`getCallingPackage()`
`int`	`getChangingConfigurations()`
`ComponentName`	`getComponentName()`
`Scene`	`getContentScene()`
`TransitionManager`	`getContentTransitionManager()`
`View`	`getCurrentFocus()`
`FragmentManager`	`getFragmentManager()`
`Intent`	`getIntent()`
`Object`	`getLastNonConfigurationInstance()`
`LayoutInflater`	`getLayoutInflater()`
`LoaderManager`	`getLoaderManager()`
`String`	`getLocalClassName()`
`int`	`getMaxNumPictureInPictureActions()`
`final MediaController`	`getMediaController()`
`MenuInflater`	`getMenuInflater()`
`final Activity`	`getParent()`
`Intent`	`getParentActivityIntent()`
`SharedPreferences`	`getPreferences(int arg0)`
`Uri`	`getReferrer()`
`int`	`getRequestedOrientation()`
`final SearchEvent`	`getSearchEvent()`
`Object`	`getSystemService(String arg0)`
`int`	`getTaskId()`
`final CharSequence`	`getTitle()`
`final int`	`getTitleColor()`
`VoiceInteractor`	`getVoiceInteractor()`
`final int`	`getVolumeControlStream()`
`Window`	`getWindow()`
`WindowManager`	`getWindowManager()`
`boolean`	`hasWindowFocus()`
`void`	`invalidateOptionsMenu()`
`boolean`	`isActivityTransitionRunning()`
`boolean`	`isChangingConfigurations()`
`final boolean`	`isChild()`
`boolean`	`isDestroyed()`
`boolean`	`isFinishing()`
`boolean`	`isImmersive()`
`boolean`	`isInMultiWindowMode()`
`boolean`	`isInPictureInPictureMode()`
`boolean`	`isLocalVoiceInteractionSupported()`
`boolean`	`isTaskRoot()`
`boolean`	`isVoiceInteraction()`
`boolean`	`isVoiceInteractionRoot()`
`final Cursor`	`managedQuery(Uri arg0, String[] arg1, String arg2, String[] arg3, String arg4)`
`boolean`	`moveTaskToBack(boolean arg0)`
`boolean`	`navigateUpTo(Intent arg0)`
`boolean`	`navigateUpToFromChild(Activity arg0, Intent arg1)`
`void`	`onActionModeFinished(ActionMode arg0)`
`void`	`onActionModeStarted(ActionMode arg0)`
`void`	`onActivityReenter(int arg0, Intent arg1)`
`void`	`onActivityResult(int arg0, int arg1, Intent arg2)`
`void`	`onApplyThemeResource(Resources.Theme arg0, int arg1, boolean arg2)`
`void`	`onAttachFragment(Fragment arg0)`
`void`	`onAttachedToWindow()`
`void`	`onBackPressed()`
`void`	`onChildTitleChanged(Activity arg0, CharSequence arg1)`
`void`	`onConfigurationChanged(Configuration arg0)`
`void`	`onContentChanged()`
`boolean`	`onContextItemSelected(MenuItem arg0)`
`void`	`onContextMenuClosed(Menu arg0)`
`void`	`onCreate(Bundle arg0, PersistableBundle arg1)`
`void`	`onCreate(Bundle arg0)`
`void`	`onCreateContextMenu(ContextMenu arg0, View arg1, ContextMenu.ContextMenuInfo arg2)`
`CharSequence`	`onCreateDescription()`
`Dialog`	`onCreateDialog(int arg0)`
`Dialog`	`onCreateDialog(int arg0, Bundle arg1)`
`void`	`onCreateNavigateUpTaskStack(TaskStackBuilder arg0)`
`boolean`	`onCreateOptionsMenu(Menu arg0)`
`boolean`	`onCreatePanelMenu(int arg0, Menu arg1)`
`View`	`onCreatePanelView(int arg0)`
`boolean`	`onCreateThumbnail(Bitmap arg0, Canvas arg1)`
`View`	`onCreateView(View arg0, String arg1, Context arg2, AttributeSet arg3)`
`View`	`onCreateView(String arg0, Context arg1, AttributeSet arg2)`
`void`	`onDestroy()`
`void`	`onDetachedFromWindow()`
`void`	`onEnterAnimationComplete()`
`boolean`	`onGenericMotionEvent(MotionEvent arg0)`
`void`	`onGetDirectActions(CancellationSignal arg0, Consumer<List<DirectAction>> arg1)`
`boolean`	`onKeyDown(int arg0, KeyEvent arg1)`
`boolean`	`onKeyLongPress(int arg0, KeyEvent arg1)`
`boolean`	`onKeyMultiple(int arg0, int arg1, KeyEvent arg2)`
`boolean`	`onKeyShortcut(int arg0, KeyEvent arg1)`
`boolean`	`onKeyUp(int arg0, KeyEvent arg1)`
`void`	`onLocalVoiceInteractionStarted()`
`void`	`onLocalVoiceInteractionStopped()`
`void`	`onLowMemory()`
`boolean`	`onMenuItemSelected(int arg0, MenuItem arg1)`
`boolean`	`onMenuOpened(int arg0, Menu arg1)`
`void`	`onMultiWindowModeChanged(boolean arg0)`
`void`	`onMultiWindowModeChanged(boolean arg0, Configuration arg1)`
`boolean`	`onNavigateUp()`
`boolean`	`onNavigateUpFromChild(Activity arg0)`
`void`	`onNewIntent(Intent arg0)`
`boolean`	`onOptionsItemSelected(MenuItem arg0)`
`void`	`onOptionsMenuClosed(Menu arg0)`
`void`	`onPanelClosed(int arg0, Menu arg1)`
`void`	`onPause()`
`void`	`onPerformDirectAction(String arg0, Bundle arg1, CancellationSignal arg2, Consumer<Bundle> arg3)`
`void`	`onPictureInPictureModeChanged(boolean arg0, Configuration arg1)`
`void`	`onPictureInPictureModeChanged(boolean arg0)`
`void`	`onPostCreate(Bundle arg0)`
`void`	`onPostCreate(Bundle arg0, PersistableBundle arg1)`
`void`	`onPostResume()`
`void`	`onPrepareDialog(int arg0, Dialog arg1, Bundle arg2)`
`void`	`onPrepareDialog(int arg0, Dialog arg1)`
`void`	`onPrepareNavigateUpTaskStack(TaskStackBuilder arg0)`
`boolean`	`onPrepareOptionsMenu(Menu arg0)`
`boolean`	`onPreparePanel(int arg0, View arg1, Menu arg2)`
`void`	`onProvideAssistContent(AssistContent arg0)`
`void`	`onProvideAssistData(Bundle arg0)`
`void`	`onProvideKeyboardShortcuts(List<KeyboardShortcutGroup> arg0, Menu arg1, int arg2)`
`Uri`	`onProvideReferrer()`
`void`	`onRequestPermissionsResult(int arg0, String[] arg1, int[] arg2)`
`void`	`onRestart()`
`void`	`onRestoreInstanceState(Bundle arg0)`
`void`	`onRestoreInstanceState(Bundle arg0, PersistableBundle arg1)`
`void`	`onResume()`
`Object`	`onRetainNonConfigurationInstance()`
`void`	`onSaveInstanceState(Bundle arg0, PersistableBundle arg1)`
`void`	`onSaveInstanceState(Bundle arg0)`
`boolean`	`onSearchRequested(SearchEvent arg0)`
`boolean`	`onSearchRequested()`
`void`	`onStart()`
`void`	`onStateNotSaved()`
`void`	`onStop()`
`void`	`onTitleChanged(CharSequence arg0, int arg1)`
`void`	`onTopResumedActivityChanged(boolean arg0)`
`boolean`	`onTouchEvent(MotionEvent arg0)`
`boolean`	`onTrackballEvent(MotionEvent arg0)`
`void`	`onTrimMemory(int arg0)`
`void`	`onUserInteraction()`
`void`	`onUserLeaveHint()`
`void`	`onVisibleBehindCanceled()`
`void`	`onWindowAttributesChanged(WindowManager.LayoutParams arg0)`
`void`	`onWindowFocusChanged(boolean arg0)`
`ActionMode`	`onWindowStartingActionMode(ActionMode.Callback arg0, int arg1)`
`ActionMode`	`onWindowStartingActionMode(ActionMode.Callback arg0)`
`void`	`openContextMenu(View arg0)`
`void`	`openOptionsMenu()`
`void`	`overridePendingTransition(int arg0, int arg1)`
`void`	`postponeEnterTransition()`
`void`	`recreate()`
`void`	`registerActivityLifecycleCallbacks(Application.ActivityLifecycleCallbacks arg0)`
`void`	`registerForContextMenu(View arg0)`
`boolean`	`releaseInstance()`
`final void`	`removeDialog(int arg0)`
`void`	`reportFullyDrawn()`
`DragAndDropPermissions`	`requestDragAndDropPermissions(DragEvent arg0)`
`final void`	`requestPermissions(String[] arg0, int arg1)`
`final void`	`requestShowKeyboardShortcuts()`
`boolean`	`requestVisibleBehind(boolean arg0)`
`final boolean`	`requestWindowFeature(int arg0)`
`final <T extends View> T`	`requireViewById(int arg0)`
`final void`	`runOnUiThread(Runnable arg0)`
`void`	`setActionBar(Toolbar arg0)`
`void`	`setContentTransitionManager(TransitionManager arg0)`
`void`	`setContentView(View arg0, ViewGroup.LayoutParams arg1)`
`void`	`setContentView(View arg0)`
`void`	`setContentView(int arg0)`
`final void`	`setDefaultKeyMode(int arg0)`
`void`	`setEnterSharedElementCallback(SharedElementCallback arg0)`
`void`	`setExitSharedElementCallback(SharedElementCallback arg0)`
`final void`	`setFeatureDrawable(int arg0, Drawable arg1)`
`final void`	`setFeatureDrawableAlpha(int arg0, int arg1)`
`final void`	`setFeatureDrawableResource(int arg0, int arg1)`
`final void`	`setFeatureDrawableUri(int arg0, Uri arg1)`
`void`	`setFinishOnTouchOutside(boolean arg0)`
`void`	`setImmersive(boolean arg0)`
`void`	`setInheritShowWhenLocked(boolean arg0)`
`void`	`setIntent(Intent arg0)`
`final void`	`setMediaController(MediaController arg0)`
`void`	`setPictureInPictureParams(PictureInPictureParams arg0)`
`final void`	`setProgress(int arg0)`
`final void`	`setProgressBarIndeterminate(boolean arg0)`
`final void`	`setProgressBarIndeterminateVisibility(boolean arg0)`
`final void`	`setProgressBarVisibility(boolean arg0)`
`void`	`setRequestedOrientation(int arg0)`
`final void`	`setResult(int arg0, Intent arg1)`
`final void`	`setResult(int arg0)`
`final void`	`setSecondaryProgress(int arg0)`
`void`	`setShowWhenLocked(boolean arg0)`
`void`	`setTaskDescription(ActivityManager.TaskDescription arg0)`
`void`	`setTheme(int arg0)`
`void`	`setTitle(CharSequence arg0)`
`void`	`setTitle(int arg0)`
`void`	`setTitleColor(int arg0)`
`void`	`setTurnScreenOn(boolean arg0)`
`void`	`setVisible(boolean arg0)`
`final void`	`setVolumeControlStream(int arg0)`
`void`	`setVrModeEnabled(boolean arg0, ComponentName arg1)`
`boolean`	`shouldShowRequestPermissionRationale(String arg0)`
`boolean`	`shouldUpRecreateTask(Intent arg0)`
`boolean`	`showAssist(Bundle arg0)`
`final boolean`	`showDialog(int arg0, Bundle arg1)`
`final void`	`showDialog(int arg0)`
`void`	`showLockTaskEscapeMessage()`
`ActionMode`	`startActionMode(ActionMode.Callback arg0, int arg1)`
`ActionMode`	`startActionMode(ActionMode.Callback arg0)`
`void`	`startActivities(Intent[] arg0, Bundle arg1)`
`void`	`startActivities(Intent[] arg0)`
`void`	`startActivity(Intent arg0)`
`void`	`startActivity(Intent arg0, Bundle arg1)`
`void`	`startActivityForResult(Intent arg0, int arg1)`
`void`	`startActivityForResult(Intent arg0, int arg1, Bundle arg2)`
`void`	`startActivityFromChild(Activity arg0, Intent arg1, int arg2)`
`void`	`startActivityFromChild(Activity arg0, Intent arg1, int arg2, Bundle arg3)`
`void`	`startActivityFromFragment(Fragment arg0, Intent arg1, int arg2, Bundle arg3)`
`void`	`startActivityFromFragment(Fragment arg0, Intent arg1, int arg2)`
`boolean`	`startActivityIfNeeded(Intent arg0, int arg1, Bundle arg2)`
`boolean`	`startActivityIfNeeded(Intent arg0, int arg1)`
`void`	`startIntentSender(IntentSender arg0, Intent arg1, int arg2, int arg3, int arg4)`
`void`	`startIntentSender(IntentSender arg0, Intent arg1, int arg2, int arg3, int arg4, Bundle arg5)`
`void`	`startIntentSenderForResult(IntentSender arg0, int arg1, Intent arg2, int arg3, int arg4, int arg5)`
`void`	`startIntentSenderForResult(IntentSender arg0, int arg1, Intent arg2, int arg3, int arg4, int arg5, Bundle arg6)`
`void`	`startIntentSenderFromChild(Activity arg0, IntentSender arg1, int arg2, Intent arg3, int arg4, int arg5, int arg6, Bundle arg7)`
`void`	`startIntentSenderFromChild(Activity arg0, IntentSender arg1, int arg2, Intent arg3, int arg4, int arg5, int arg6)`
`void`	`startLocalVoiceInteraction(Bundle arg0)`
`void`	`startLockTask()`
`void`	`startManagingCursor(Cursor arg0)`
`boolean`	`startNextMatchingActivity(Intent arg0, Bundle arg1)`
`boolean`	`startNextMatchingActivity(Intent arg0)`
`void`	`startPostponedEnterTransition()`
`void`	`startSearch(String arg0, boolean arg1, Bundle arg2, boolean arg3)`
`void`	`stopLocalVoiceInteraction()`
`void`	`stopLockTask()`
`void`	`stopManagingCursor(Cursor arg0)`
`void`	`takeKeyEvents(boolean arg0)`
`void`	`triggerSearch(String arg0, Bundle arg1)`
`void`	`unregisterActivityLifecycleCallbacks(Application.ActivityLifecycleCallbacks arg0)`
`void`	`unregisterForContextMenu(View arg0)`

From class


        
          android.view.ContextThemeWrapper

`void`	`applyOverrideConfiguration(Configuration arg0)`
`void`	`attachBaseContext(Context arg0)`
`AssetManager`	`getAssets()`
`Resources`	`getResources()`
`Object`	`getSystemService(String arg0)`
`Resources.Theme`	`getTheme()`
`void`	`onApplyThemeResource(Resources.Theme arg0, int arg1, boolean arg2)`
`void`	`setTheme(Resources.Theme arg0)`
`void`	`setTheme(int arg0)`

From class


        
          android.content.ContextWrapper

`void`	`attachBaseContext(Context arg0)`
`boolean`	`bindIsolatedService(Intent arg0, int arg1, String arg2, Executor arg3, ServiceConnection arg4)`
`boolean`	`bindService(Intent arg0, int arg1, Executor arg2, ServiceConnection arg3)`
`boolean`	`bindService(Intent arg0, ServiceConnection arg1, int arg2)`
`int`	`checkCallingOrSelfPermission(String arg0)`
`int`	`checkCallingOrSelfUriPermission(Uri arg0, int arg1)`
`int`	`checkCallingPermission(String arg0)`
`int`	`checkCallingUriPermission(Uri arg0, int arg1)`
`int`	`checkPermission(String arg0, int arg1, int arg2)`
`int`	`checkSelfPermission(String arg0)`
`int`	`checkUriPermission(Uri arg0, String arg1, String arg2, int arg3, int arg4, int arg5)`
`int`	`checkUriPermission(Uri arg0, int arg1, int arg2, int arg3)`
`void`	`clearWallpaper()`
`Context`	`createConfigurationContext(Configuration arg0)`
`Context`	`createContextForSplit(String arg0)`
`Context`	`createDeviceProtectedStorageContext()`
`Context`	`createDisplayContext(Display arg0)`
`Context`	`createPackageContext(String arg0, int arg1)`
`String[]`	`databaseList()`
`boolean`	`deleteDatabase(String arg0)`
`boolean`	`deleteFile(String arg0)`
`boolean`	`deleteSharedPreferences(String arg0)`
`void`	`enforceCallingOrSelfPermission(String arg0, String arg1)`
`void`	`enforceCallingOrSelfUriPermission(Uri arg0, int arg1, String arg2)`
`void`	`enforceCallingPermission(String arg0, String arg1)`
`void`	`enforceCallingUriPermission(Uri arg0, int arg1, String arg2)`
`void`	`enforcePermission(String arg0, int arg1, int arg2, String arg3)`
`void`	`enforceUriPermission(Uri arg0, String arg1, String arg2, int arg3, int arg4, int arg5, String arg6)`
`void`	`enforceUriPermission(Uri arg0, int arg1, int arg2, int arg3, String arg4)`
`String[]`	`fileList()`
`Context`	`getApplicationContext()`
`ApplicationInfo`	`getApplicationInfo()`
`AssetManager`	`getAssets()`
`Context`	`getBaseContext()`
`File`	`getCacheDir()`
`ClassLoader`	`getClassLoader()`
`File`	`getCodeCacheDir()`
`ContentResolver`	`getContentResolver()`
`File`	`getDataDir()`
`File`	`getDatabasePath(String arg0)`
`File`	`getDir(String arg0, int arg1)`
`File`	`getExternalCacheDir()`
`File[]`	`getExternalCacheDirs()`
`File`	`getExternalFilesDir(String arg0)`
`File[]`	`getExternalFilesDirs(String arg0)`
`File[]`	`getExternalMediaDirs()`
`File`	`getFileStreamPath(String arg0)`
`File`	`getFilesDir()`
`Executor`	`getMainExecutor()`
`Looper`	`getMainLooper()`
`File`	`getNoBackupFilesDir()`
`File`	`getObbDir()`
`File[]`	`getObbDirs()`
`String`	`getOpPackageName()`
`String`	`getPackageCodePath()`
`PackageManager`	`getPackageManager()`
`String`	`getPackageName()`
`String`	`getPackageResourcePath()`
`Resources`	`getResources()`
`SharedPreferences`	`getSharedPreferences(String arg0, int arg1)`
`Object`	`getSystemService(String arg0)`
`String`	`getSystemServiceName(Class<?> arg0)`
`Resources.Theme`	`getTheme()`
`Drawable`	`getWallpaper()`
`int`	`getWallpaperDesiredMinimumHeight()`
`int`	`getWallpaperDesiredMinimumWidth()`
`void`	`grantUriPermission(String arg0, Uri arg1, int arg2)`
`boolean`	`isDeviceProtectedStorage()`
`boolean`	`isRestricted()`
`boolean`	`moveDatabaseFrom(Context arg0, String arg1)`
`boolean`	`moveSharedPreferencesFrom(Context arg0, String arg1)`
`FileInputStream`	`openFileInput(String arg0)`
`FileOutputStream`	`openFileOutput(String arg0, int arg1)`
`SQLiteDatabase`	`openOrCreateDatabase(String arg0, int arg1, SQLiteDatabase.CursorFactory arg2, DatabaseErrorHandler arg3)`
`SQLiteDatabase`	`openOrCreateDatabase(String arg0, int arg1, SQLiteDatabase.CursorFactory arg2)`
`Drawable`	`peekWallpaper()`
`Intent`	`registerReceiver(BroadcastReceiver arg0, IntentFilter arg1)`
`Intent`	`registerReceiver(BroadcastReceiver arg0, IntentFilter arg1, int arg2)`
`Intent`	`registerReceiver(BroadcastReceiver arg0, IntentFilter arg1, String arg2, Handler arg3, int arg4)`
`Intent`	`registerReceiver(BroadcastReceiver arg0, IntentFilter arg1, String arg2, Handler arg3)`
`void`	`removeStickyBroadcast(Intent arg0)`
`void`	`removeStickyBroadcastAsUser(Intent arg0, UserHandle arg1)`
`void`	`revokeUriPermission(Uri arg0, int arg1)`
`void`	`revokeUriPermission(String arg0, Uri arg1, int arg2)`
`void`	`sendBroadcast(Intent arg0, String arg1)`
`void`	`sendBroadcast(Intent arg0)`
`void`	`sendBroadcastAsUser(Intent arg0, UserHandle arg1)`
`void`	`sendBroadcastAsUser(Intent arg0, UserHandle arg1, String arg2)`
`void`	`sendOrderedBroadcast(Intent arg0, String arg1, BroadcastReceiver arg2, Handler arg3, int arg4, String arg5, Bundle arg6)`
`void`	`sendOrderedBroadcast(Intent arg0, String arg1)`
`void`	`sendOrderedBroadcastAsUser(Intent arg0, UserHandle arg1, String arg2, BroadcastReceiver arg3, Handler arg4, int arg5, String arg6, Bundle arg7)`
`void`	`sendStickyBroadcast(Intent arg0)`
`void`	`sendStickyBroadcastAsUser(Intent arg0, UserHandle arg1)`
`void`	`sendStickyOrderedBroadcast(Intent arg0, BroadcastReceiver arg1, Handler arg2, int arg3, String arg4, Bundle arg5)`
`void`	`sendStickyOrderedBroadcastAsUser(Intent arg0, UserHandle arg1, BroadcastReceiver arg2, Handler arg3, int arg4, String arg5, Bundle arg6)`
`void`	`setTheme(int arg0)`
`void`	`setWallpaper(Bitmap arg0)`
`void`	`setWallpaper(InputStream arg0)`
`void`	`startActivities(Intent[] arg0, Bundle arg1)`
`void`	`startActivities(Intent[] arg0)`
`void`	`startActivity(Intent arg0)`
`void`	`startActivity(Intent arg0, Bundle arg1)`
`ComponentName`	`startForegroundService(Intent arg0)`
`boolean`	`startInstrumentation(ComponentName arg0, String arg1, Bundle arg2)`
`void`	`startIntentSender(IntentSender arg0, Intent arg1, int arg2, int arg3, int arg4)`
`void`	`startIntentSender(IntentSender arg0, Intent arg1, int arg2, int arg3, int arg4, Bundle arg5)`
`ComponentName`	`startService(Intent arg0)`
`boolean`	`stopService(Intent arg0)`
`void`	`unbindService(ServiceConnection arg0)`
`void`	`unregisterReceiver(BroadcastReceiver arg0)`
`void`	`updateServiceGroup(ServiceConnection arg0, int arg1, int arg2)`

From class


        
          android.content.Context

`boolean`	`bindIsolatedService(Intent arg0, int arg1, String arg2, Executor arg3, ServiceConnection arg4)`
`boolean`	`bindService(Intent arg0, int arg1, Executor arg2, ServiceConnection arg3)`
`abstract boolean`	`bindService(Intent arg0, ServiceConnection arg1, int arg2)`
`abstract int`	`checkCallingOrSelfPermission(String arg0)`
`abstract int`	`checkCallingOrSelfUriPermission(Uri arg0, int arg1)`
`abstract int`	`checkCallingPermission(String arg0)`
`abstract int`	`checkCallingUriPermission(Uri arg0, int arg1)`
`abstract int`	`checkPermission(String arg0, int arg1, int arg2)`
`abstract int`	`checkSelfPermission(String arg0)`
`abstract int`	`checkUriPermission(Uri arg0, String arg1, String arg2, int arg3, int arg4, int arg5)`
`abstract int`	`checkUriPermission(Uri arg0, int arg1, int arg2, int arg3)`
`abstract void`	`clearWallpaper()`
`abstract Context`	`createConfigurationContext(Configuration arg0)`
`abstract Context`	`createContextForSplit(String arg0)`
`abstract Context`	`createDeviceProtectedStorageContext()`
`abstract Context`	`createDisplayContext(Display arg0)`
`abstract Context`	`createPackageContext(String arg0, int arg1)`
`abstract String[]`	`databaseList()`
`abstract boolean`	`deleteDatabase(String arg0)`
`abstract boolean`	`deleteFile(String arg0)`
`abstract boolean`	`deleteSharedPreferences(String arg0)`
`abstract void`	`enforceCallingOrSelfPermission(String arg0, String arg1)`
`abstract void`	`enforceCallingOrSelfUriPermission(Uri arg0, int arg1, String arg2)`
`abstract void`	`enforceCallingPermission(String arg0, String arg1)`
`abstract void`	`enforceCallingUriPermission(Uri arg0, int arg1, String arg2)`
`abstract void`	`enforcePermission(String arg0, int arg1, int arg2, String arg3)`
`abstract void`	`enforceUriPermission(Uri arg0, String arg1, String arg2, int arg3, int arg4, int arg5, String arg6)`
`abstract void`	`enforceUriPermission(Uri arg0, int arg1, int arg2, int arg3, String arg4)`
`abstract String[]`	`fileList()`
`abstract Context`	`getApplicationContext()`
`abstract ApplicationInfo`	`getApplicationInfo()`
`abstract AssetManager`	`getAssets()`
`abstract File`	`getCacheDir()`
`abstract ClassLoader`	`getClassLoader()`
`abstract File`	`getCodeCacheDir()`
`final int`	`getColor(int arg0)`
`final ColorStateList`	`getColorStateList(int arg0)`
`abstract ContentResolver`	`getContentResolver()`
`abstract File`	`getDataDir()`
`abstract File`	`getDatabasePath(String arg0)`
`abstract File`	`getDir(String arg0, int arg1)`
`final Drawable`	`getDrawable(int arg0)`
`abstract File`	`getExternalCacheDir()`
`abstract File[]`	`getExternalCacheDirs()`
`abstract File`	`getExternalFilesDir(String arg0)`
`abstract File[]`	`getExternalFilesDirs(String arg0)`
`abstract File[]`	`getExternalMediaDirs()`
`abstract File`	`getFileStreamPath(String arg0)`
`abstract File`	`getFilesDir()`
`Executor`	`getMainExecutor()`
`abstract Looper`	`getMainLooper()`
`abstract File`	`getNoBackupFilesDir()`
`abstract File`	`getObbDir()`
`abstract File[]`	`getObbDirs()`
`String`	`getOpPackageName()`
`abstract String`	`getPackageCodePath()`
`abstract PackageManager`	`getPackageManager()`
`abstract String`	`getPackageName()`
`abstract String`	`getPackageResourcePath()`
`abstract Resources`	`getResources()`
`abstract SharedPreferences`	`getSharedPreferences(String arg0, int arg1)`
`final String`	`getString(int arg0, Object... arg1)`
`final String`	`getString(int arg0)`
`final <T> T`	`getSystemService(Class<T> arg0)`
`abstract Object`	`getSystemService(String arg0)`
`abstract String`	`getSystemServiceName(Class<?> arg0)`
`final CharSequence`	`getText(int arg0)`
`abstract Resources.Theme`	`getTheme()`
`abstract Drawable`	`getWallpaper()`
`abstract int`	`getWallpaperDesiredMinimumHeight()`
`abstract int`	`getWallpaperDesiredMinimumWidth()`
`abstract void`	`grantUriPermission(String arg0, Uri arg1, int arg2)`
`abstract boolean`	`isDeviceProtectedStorage()`
`boolean`	`isRestricted()`
`abstract boolean`	`moveDatabaseFrom(Context arg0, String arg1)`
`abstract boolean`	`moveSharedPreferencesFrom(Context arg0, String arg1)`
`final TypedArray`	`obtainStyledAttributes(AttributeSet arg0, int[] arg1)`
`final TypedArray`	`obtainStyledAttributes(AttributeSet arg0, int[] arg1, int arg2, int arg3)`
`final TypedArray`	`obtainStyledAttributes(int arg0, int[] arg1)`
`final TypedArray`	`obtainStyledAttributes(int[] arg0)`
`abstract FileInputStream`	`openFileInput(String arg0)`
`abstract FileOutputStream`	`openFileOutput(String arg0, int arg1)`
`abstract SQLiteDatabase`	`openOrCreateDatabase(String arg0, int arg1, SQLiteDatabase.CursorFactory arg2, DatabaseErrorHandler arg3)`
`abstract SQLiteDatabase`	`openOrCreateDatabase(String arg0, int arg1, SQLiteDatabase.CursorFactory arg2)`
`abstract Drawable`	`peekWallpaper()`
`void`	`registerComponentCallbacks(ComponentCallbacks arg0)`
`abstract Intent`	`registerReceiver(BroadcastReceiver arg0, IntentFilter arg1)`
`abstract Intent`	`registerReceiver(BroadcastReceiver arg0, IntentFilter arg1, int arg2)`
`abstract Intent`	`registerReceiver(BroadcastReceiver arg0, IntentFilter arg1, String arg2, Handler arg3, int arg4)`
`abstract Intent`	`registerReceiver(BroadcastReceiver arg0, IntentFilter arg1, String arg2, Handler arg3)`
`abstract void`	`removeStickyBroadcast(Intent arg0)`
`abstract void`	`removeStickyBroadcastAsUser(Intent arg0, UserHandle arg1)`
`abstract void`	`revokeUriPermission(Uri arg0, int arg1)`
`abstract void`	`revokeUriPermission(String arg0, Uri arg1, int arg2)`
`abstract void`	`sendBroadcast(Intent arg0, String arg1)`
`abstract void`	`sendBroadcast(Intent arg0)`
`abstract void`	`sendBroadcastAsUser(Intent arg0, UserHandle arg1)`
`abstract void`	`sendBroadcastAsUser(Intent arg0, UserHandle arg1, String arg2)`
`abstract void`	`sendOrderedBroadcast(Intent arg0, String arg1, BroadcastReceiver arg2, Handler arg3, int arg4, String arg5, Bundle arg6)`
`abstract void`	`sendOrderedBroadcast(Intent arg0, String arg1)`
`abstract void`	`sendOrderedBroadcastAsUser(Intent arg0, UserHandle arg1, String arg2, BroadcastReceiver arg3, Handler arg4, int arg5, String arg6, Bundle arg7)`
`abstract void`	`sendStickyBroadcast(Intent arg0)`
`abstract void`	`sendStickyBroadcastAsUser(Intent arg0, UserHandle arg1)`
`abstract void`	`sendStickyOrderedBroadcast(Intent arg0, BroadcastReceiver arg1, Handler arg2, int arg3, String arg4, Bundle arg5)`
`abstract void`	`sendStickyOrderedBroadcastAsUser(Intent arg0, UserHandle arg1, BroadcastReceiver arg2, Handler arg3, int arg4, String arg5, Bundle arg6)`
`abstract void`	`setTheme(int arg0)`
`abstract void`	`setWallpaper(Bitmap arg0)`
`abstract void`	`setWallpaper(InputStream arg0)`
`abstract void`	`startActivities(Intent[] arg0, Bundle arg1)`
`abstract void`	`startActivities(Intent[] arg0)`
`abstract void`	`startActivity(Intent arg0)`
`abstract void`	`startActivity(Intent arg0, Bundle arg1)`
`abstract ComponentName`	`startForegroundService(Intent arg0)`
`abstract boolean`	`startInstrumentation(ComponentName arg0, String arg1, Bundle arg2)`
`abstract void`	`startIntentSender(IntentSender arg0, Intent arg1, int arg2, int arg3, int arg4)`
`abstract void`	`startIntentSender(IntentSender arg0, Intent arg1, int arg2, int arg3, int arg4, Bundle arg5)`
`abstract ComponentName`	`startService(Intent arg0)`
`abstract boolean`	`stopService(Intent arg0)`
`abstract void`	`unbindService(ServiceConnection arg0)`
`void`	`unregisterComponentCallbacks(ComponentCallbacks arg0)`
`abstract void`	`unregisterReceiver(BroadcastReceiver arg0)`
`void`	`updateServiceGroup(ServiceConnection arg0, int arg1, int arg2)`

From class


        
          java.lang.Object

`Object`	`clone()`
`boolean`	`equals(Object arg0)`
`void`	`finalize()`
`final Class<?>`	`getClass()`
`int`	`hashCode()`
`final void`	`notify()`
`final void`	`notifyAll()`
`String`	`toString()`
`final void`	`wait(long arg0, int arg1)`
`final void`	`wait(long arg0)`
`final void`	`wait()`

From interface


        
          androidx.lifecycle.LifecycleOwner


        abstract
        
        
        
        
        Lifecycle


      getLifecycle()

Returns the Lifecycle of the provider.

From interface


        
          android.view.LayoutInflater.Factory2

abstract View onCreateView(View arg0, String arg1, Context arg2, AttributeSet arg3)

From interface


        
          android.view.Window.Callback

`abstract boolean`	`dispatchGenericMotionEvent(MotionEvent arg0)`
`abstract boolean`	`dispatchKeyEvent(KeyEvent arg0)`
`abstract boolean`	`dispatchKeyShortcutEvent(KeyEvent arg0)`
`abstract boolean`	`dispatchPopulateAccessibilityEvent(AccessibilityEvent arg0)`
`abstract boolean`	`dispatchTouchEvent(MotionEvent arg0)`
`abstract boolean`	`dispatchTrackballEvent(MotionEvent arg0)`
`abstract void`	`onActionModeFinished(ActionMode arg0)`
`abstract void`	`onActionModeStarted(ActionMode arg0)`
`abstract void`	`onAttachedToWindow()`
`abstract void`	`onContentChanged()`
`abstract boolean`	`onCreatePanelMenu(int arg0, Menu arg1)`
`abstract View`	`onCreatePanelView(int arg0)`
`abstract void`	`onDetachedFromWindow()`
`abstract boolean`	`onMenuItemSelected(int arg0, MenuItem arg1)`
`abstract boolean`	`onMenuOpened(int arg0, Menu arg1)`
`abstract void`	`onPanelClosed(int arg0, Menu arg1)`
`default void`	`onPointerCaptureChanged(boolean arg0)`
`abstract boolean`	`onPreparePanel(int arg0, View arg1, Menu arg2)`
`default void`	`onProvideKeyboardShortcuts(List<KeyboardShortcutGroup> arg0, Menu arg1, int arg2)`
`abstract boolean`	`onSearchRequested()`
`abstract boolean`	`onSearchRequested(SearchEvent arg0)`
`abstract void`	`onWindowAttributesChanged(WindowManager.LayoutParams arg0)`
`abstract void`	`onWindowFocusChanged(boolean arg0)`
`abstract ActionMode`	`onWindowStartingActionMode(ActionMode.Callback arg0)`
`abstract ActionMode`	`onWindowStartingActionMode(ActionMode.Callback arg0, int arg1)`

From interface


        
          android.view.KeyEvent.Callback

`abstract boolean`	`onKeyDown(int arg0, KeyEvent arg1)`
`abstract boolean`	`onKeyLongPress(int arg0, KeyEvent arg1)`
`abstract boolean`	`onKeyMultiple(int arg0, int arg1, KeyEvent arg2)`
`abstract boolean`	`onKeyUp(int arg0, KeyEvent arg1)`

From interface


        
          android.view.View.OnCreateContextMenuListener

abstract void onCreateContextMenu(ContextMenu arg0, View arg1, ContextMenu.ContextMenuInfo arg2)

From interface


        
          android.content.ComponentCallbacks2

abstract void onTrimMemory(int arg0)

From interface


        
          androidx.lifecycle.ViewModelStoreOwner


        abstract
        
        
        
        
        ViewModelStore


      getViewModelStore()

Returns owned ViewModelStore

From interface


        
          androidx.lifecycle.HasDefaultViewModelProviderFactory


        abstract
        
        
        
        
        ViewModelProvider.Factory


      getDefaultViewModelProviderFactory()

Returns the default ViewModelProvider.Factory that should be used when no custom Factory is provided to the ViewModelProvider constructors.

From interface


        
          androidx.savedstate.SavedStateRegistryOwner


        abstract
        
        
        
        
        SavedStateRegistry


      getSavedStateRegistry()

Returns owned SavedStateRegistry

From interface


        
          androidx.activity.OnBackPressedDispatcherOwner


        abstract
        
        
        
        
        OnBackPressedDispatcher


      getOnBackPressedDispatcher()

Retrieve the OnBackPressedDispatcher that should handle the system back button.

From interface


        
          android.view.LayoutInflater.Factory

abstract View onCreateView(String arg0, Context arg1, AttributeSet arg2)

From interface


        
          android.content.ComponentCallbacks

`abstract void`	`onConfigurationChanged(Configuration arg0)`
`abstract void`	`onLowMemory()`

Public constructors

ComponentActivity

public ComponentActivity ()

Default constructor for ComponentActivity. All Activities must have a default constructor for API 27 and lower devices or when using the default AppComponentFactory.

ComponentActivity

public ComponentActivity (int contentLayoutId)

Alternate constructor that can be used to provide a default layout that will be inflated as part of super.onCreate(savedInstanceState).

This should generally be called from your constructor that takes no parameters, as is required for API 27 and lower or when using the default AppComponentFactory.

Parameters
`contentLayoutId`	`int`

See also:

ComponentActivity()

Public methods

dispatchKeyEvent

public boolean dispatchKeyEvent (KeyEvent event)

Parameters
`event`	`KeyEvent`

Returns
`boolean`

dispatchKeyShortcutEvent

public boolean dispatchKeyShortcutEvent (KeyEvent event)

Parameters
`event`	`KeyEvent`

Returns
`boolean`

getDefaultViewModelProviderFactory

public ViewModelProvider.Factory getDefaultViewModelProviderFactory ()

Returns the default ViewModelProvider.Factory that should be used when no custom Factory is provided to the ViewModelProvider constructors.

The extras of Activity.getIntent() when this is first called will be used as the defaults to any SavedStateHandle passed to a view model created using this factory.

Returns
`ViewModelProvider.Factory`	a `ViewModelProvider.Factory`

getLastCustomNonConfigurationInstance

public Object getLastCustomNonConfigurationInstance ()

This method is deprecated.
Use a ViewModel to store non config state.

Return the value previously returned from onRetainCustomNonConfigurationInstance().

Returns
`Object`

getLifecycle

public Lifecycle getLifecycle ()

Returns the Lifecycle of the provider.

Overriding this method is no longer supported and this method will be made final in a future version of ComponentActivity. If you do override this method, you must:

Return an instance of LifecycleRegistry
Lazily initialize your LifecycleRegistry object when this is first called. Note that this method will be called in the super classes' constructor, before any field initialization or object state creation is complete.

Returns
`Lifecycle`	The lifecycle of the provider.

getOnBackPressedDispatcher

public final OnBackPressedDispatcher getOnBackPressedDispatcher ()

Retrieve the OnBackPressedDispatcher that will be triggered when onBackPressed() is called.

Returns
`OnBackPressedDispatcher`	The `OnBackPressedDispatcher` associated with this ComponentActivity.

getSavedStateRegistry

public final SavedStateRegistry getSavedStateRegistry ()

Returns owned SavedStateRegistry

Returns
`SavedStateRegistry`	a `SavedStateRegistry`

getViewModelStore

public ViewModelStore getViewModelStore ()

Returns the ViewModelStore associated with this activity

Overriding this method is no longer supported and this method will be made final in a future version of ComponentActivity.

Returns
`ViewModelStore`	a `ViewModelStore`

Throws
`IllegalStateException`	if called before the Activity is attached to the Application instance i.e., before onCreate()

onBackPressed

public void onBackPressed ()

Called when the activity has detected the user's press of the back key. The OnBackPressedDispatcher will be given a chance to handle the back button before the default behavior of Activity.onBackPressed() is invoked.

See also:

getOnBackPressedDispatcher()

onRetainCustomNonConfigurationInstance

public Object onRetainCustomNonConfigurationInstance ()

This method is deprecated.
Use a ViewModel to store non config state.

Use this instead of onRetainNonConfigurationInstance(). Retrieve later with getLastCustomNonConfigurationInstance().

Returns
`Object`

onRetainNonConfigurationInstance

public final Object onRetainNonConfigurationInstance ()

Retain all appropriate non-config state. You can NOT override this yourself! Use a ViewModel if you want to retain your own non config state.

Returns
`Object`

Protected methods

onCreate

protected void onCreate (Bundle savedInstanceState)

If your ComponentActivity is annotated with ContentView, this will call Activity.setContentView(int) for you.

Parameters
`savedInstanceState`	`Bundle`

onSaveInstanceState

protected void onSaveInstanceState (Bundle outState)

Parameters
`outState`	`Bundle`