Package io.flutter.embedding.android

## Class FlutterActivity

- java.lang.Object
- - android.content.Context
  - - android.content.ContextWrapper
    - - android.view.ContextThemeWrapper
      - - android.app.Activity
        - - io.flutter.embedding.android.FlutterActivity

- All Implemented Interfaces:
    `ComponentCallbacks`, `ComponentCallbacks2`, `KeyEvent.Callback`, `LayoutInflater.Factory`, `LayoutInflater.Factory2`, `View.OnCreateContextMenuListener`, `Window.Callback`, `androidx.lifecycle.LifecycleOwner`, `FlutterEngineConfigurator`, `FlutterEngineProvider`, `SplashScreenProvider`, `PlatformPlugin.PlatformPluginDelegate`

      public class FlutterActivity
      extends Activity
      implements androidx.lifecycle.LifecycleOwner

  `Activity` which displays a fullscreen Flutter UI.

  `FlutterActivity` is the simplest and most direct way to integrate Flutter within an Android app.

  FlutterActivity responsibilities

  `FlutterActivity` maintains the following responsibilities:

  - Displays an Android launch screen.
  - Displays a Flutter splash screen.
  - Configures the status bar appearance.
  - Chooses the Dart execution app bundle path, entrypoint and entrypoint arguments.
  - Chooses Flutter's initial route.
  - Renders `Activity` transparently, if desired.
  - Offers hooks for subclasses to provide and configure a `FlutterEngine`.
  - Save and restore instance state, see `#shouldRestoreAndSaveState()`;

  Dart entrypoint, entrypoint arguments, initial route, and app bundle path

  The Dart entrypoint executed within this `Activity` is "main()" by default. To change the entrypoint that a `FlutterActivity` executes, subclass `FlutterActivity` and override `getDartEntrypointFunctionName()`. For non-main Dart entrypoints to not be tree-shaken away, you need to annotate those functions with `@pragma('vm:entry-point')` in Dart.

  The Dart entrypoint arguments will be passed as a list of string to Dart's entrypoint function. It can be passed using a `FlutterActivity.NewEngineIntentBuilder` via `FlutterActivity.NewEngineIntentBuilder.dartEntrypointArgs`.

  The Flutter route that is initially loaded within this `Activity` is "/". The initial route may be specified explicitly by passing the name of the route as a `String` in `FlutterActivityLaunchConfigs.EXTRA_INITIAL_ROUTE`, e.g., "my/deep/link".

  The initial route can each be controlled using a `FlutterActivity.NewEngineIntentBuilder` via `FlutterActivity.NewEngineIntentBuilder.initialRoute`.

  The app bundle path, Dart entrypoint, Dart entrypoint arguments, and initial route can also be controlled in a subclass of `FlutterActivity` by overriding their respective methods:

  - `getAppBundlePath()`
  - `getDartEntrypointFunctionName()`
  - `getDartEntrypointArgs()`
  - `getInitialRoute()`

  The Dart entrypoint and app bundle path are not supported as `Intent` parameters since your Dart library entrypoints are your private APIs and Intents are invocable by other processes.

  Using a cached FlutterEngine

  `FlutterActivity` can be used with a cached `FlutterEngine` instead of creating a new one. Use `withCachedEngine(String)` to build a `FlutterActivity` `Intent` that is configured to use an existing, cached `FlutterEngine`. `FlutterEngineCache` is the cache that is used to obtain a given cached `FlutterEngine`. You must create and put a `FlutterEngine` into the `FlutterEngineCache` yourself before using the `withCachedEngine(String)` builder. An `IllegalStateException` will be thrown if a cached engine is requested but does not exist in the cache.

  When using a cached `FlutterEngine`, that `FlutterEngine` should already be executing Dart code, which means that the Dart entrypoint and initial route have already been defined. Therefore, `FlutterActivity.CachedEngineIntentBuilder` does not offer configuration of these properties.

  It is generally recommended to use a cached `FlutterEngine` to avoid a momentary delay when initializing a new `FlutterEngine`. The two exceptions to using a cached `FlutterEngine` are:

  - When `FlutterActivity` is the first `Activity` displayed by the app, because pre-warming a `FlutterEngine` would have no impact in this situation.
  - When you are unsure when/if you will need to display a Flutter experience.

  See https://flutter.dev/docs/development/add-to-app/performance for additional performance explorations on engine loading.

  The following illustrates how to pre-warm and cache a `FlutterEngine`:

       // Create and pre-warm a FlutterEngine.
       FlutterEngine flutterEngine = new FlutterEngine(context);
       flutterEngine.getDartExecutor().executeDartEntrypoint(DartEntrypoint.createDefault());

       // Cache the pre-warmed FlutterEngine in the FlutterEngineCache.
       FlutterEngineCache.getInstance().put("my_engine", flutterEngine);

  Alternatives to FlutterActivity

  If Flutter is needed in a location that cannot use an `Activity`, consider using a `FlutterFragment`. Using a `FlutterFragment` requires forwarding some calls from an `Activity` to the `FlutterFragment`.

  If Flutter is needed in a location that can only use a `View`, consider using a `FlutterView`. Using a `FlutterView` requires forwarding some calls from an `Activity`, as well as forwarding lifecycle calls from an `Activity` or a `Fragment`.

  Launch Screen and Splash Screen

  `FlutterActivity` supports the display of an Android "launch screen" as well as a Flutter-specific "splash screen". The launch screen is displayed while the Android application loads. It is only applicable if `FlutterActivity` is the first `Activity` displayed upon loading the app. After the launch screen passes, a splash screen is optionally displayed. The splash screen is displayed for as long as it takes Flutter to initialize and render its first frame.

  Use Android themes to display a launch screen. Create two themes: a launch theme and a normal theme. In the launch theme, set `windowBackground` to the desired `Drawable` for the launch screen. In the normal theme, set `windowBackground` to any desired background color that should normally appear behind your Flutter content. In most cases this background color will never be seen, but for possible transition edge cases it is a good idea to explicitly replace the launch screen window background with a neutral color.

  Do not change aspects of system chrome between a launch theme and normal theme. Either define both themes to be fullscreen or not, and define both themes to display the same status bar and navigation bar settings. To adjust system chrome once the Flutter app renders, use platform channels to instruct Android to do so at the appropriate time. This will avoid any jarring visual changes during app startup.

  In the AndroidManifest.xml, set the theme of `FlutterActivity` to the defined launch theme. In the metadata section for `FlutterActivity`, defined the following reference to your normal theme:

  `<meta-data android:name="io.flutter.embedding.android.NormalTheme" android:resource="@style/YourNormalTheme" />`

  With themes defined, and AndroidManifest.xml updated, Flutter displays the specified launch screen until the Android application is initialized.

  Flutter also requires initialization time. To specify a splash screen for Flutter initialization, subclass `FlutterActivity` and override `provideSplashScreen()`. See `SplashScreen` for details on implementing a splash screen.

  Flutter ships with a splash screen that automatically displays the exact same `windowBackground` as the launch theme discussed previously. To use that splash screen, include the following metadata in AndroidManifest.xml for this `FlutterActivity`:

  `<meta-data android:name="io.flutter.embedding.android.SplashScreenDrawable" android:resource="@drawable/launch_background" />`

  Alternative Activity `FlutterFragmentActivity` is also available, which is similar to `FlutterActivity` but it extends `FragmentActivity`. You should use `FlutterActivity`, if possible, but if you need a `FragmentActivity` then you should use `FlutterFragmentActivity`.

- - ### Nested Class Summary

    Nested Classes
    Modifier and Type | Class | Description
    --- | --- | ---
    `static class` | `FlutterActivity.CachedEngineIntentBuilder` | Builder to create an `Intent` that launches a `FlutterActivity` with an existing `FlutterEngine` that is cached in `FlutterEngineCache`.
    `static class` | `FlutterActivity.NewEngineIntentBuilder` | Builder to create an `Intent` that launches a `FlutterActivity` with a new `FlutterEngine` and the desired configuration.

  - ### Field Summary

    Fields
    Modifier and Type | Field | Description
    --- | --- | ---
    `protected io.flutter.embedding.android.FlutterActivityAndFragmentDelegate` | `delegate` |
    `static int` | `FLUTTER_VIEW_ID` | The ID of the `FlutterView` created by this activity.

    - ### Fields inherited from class android.app.Activity

      `DEFAULT_KEYS_DIALER, DEFAULT_KEYS_DISABLE, DEFAULT_KEYS_SEARCH_GLOBAL, DEFAULT_KEYS_SEARCH_LOCAL, DEFAULT_KEYS_SHORTCUT, FOCUSED_STATE_SET, RESULT_CANCELED, RESULT_FIRST_USER, RESULT_OK`

    - ### Fields inherited from class android.content.Context

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

    - ### Fields inherited from interface android.content.ComponentCallbacks2

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

  - ### Constructor Summary

    Constructors
    Constructor | Description
    --- | ---
    `FlutterActivity()` |

  - ### Method Summary

    All Methods Static Methods Instance Methods Concrete Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `void` | `cleanUpFlutterEngine​(FlutterEngine flutterEngine)` | Hook for the host to cleanup references that were established in `configureFlutterEngine(FlutterEngine)` before the host is destroyed or detached.
    `void` | `configureFlutterEngine​(FlutterEngine flutterEngine)` | Hook for subclasses to easily configure a `FlutterEngine`.
    `static Intent` | `createDefaultIntent​(Context launchContext)` | Creates an `Intent` that launches a `FlutterActivity`, which creates a `FlutterEngine` that executes a `main()` Dart entrypoint, and displays the "/" route as Flutter's initial route.
    `void` | `detachFromFlutterEngine()` |
    `Activity` | `getActivity()` | `FlutterActivityAndFragmentDelegate.Host` method that is used by `FlutterActivityAndFragmentDelegate` to obtain an `Activity` reference as needed.
    `String` | `getAppBundlePath()` | A custom path to the bundle that contains this Flutter app's resources, e.g., Dart code snapshots.
    `protected FlutterActivityLaunchConfigs.BackgroundMode` | `getBackgroundMode()` | The desired window background mode of this `Activity`, which defaults to `FlutterActivityLaunchConfigs.BackgroundMode.opaque`.
    `String` | `getCachedEngineId()` | Returns the ID of a statically cached `FlutterEngine` to use within this `FlutterActivity`, or `null` if this `FlutterActivity` does not want to use a cached `FlutterEngine`.
    `Context` | `getContext()` | `FlutterActivityAndFragmentDelegate.Host` method that is used by `FlutterActivityAndFragmentDelegate` to obtain a `Context` reference as needed.
    `List<String>` | `getDartEntrypointArgs()` | The Dart entrypoint arguments will be passed as a list of string to Dart's entrypoint function.
    `String` | `getDartEntrypointFunctionName()` | The Dart entrypoint that will be executed as soon as the Dart snapshot is loaded.
    `String` | `getDartEntrypointLibraryUri()` | The Dart library URI for the entrypoint that will be executed as soon as the Dart snapshot is loaded.
    `ExclusiveAppComponent<Activity>` | `getExclusiveAppComponent()` | Returns the Android App Component exclusively attached to `FlutterEngine`.
    `protected FlutterEngine` | `getFlutterEngine()` | Hook for subclasses to obtain a reference to the `FlutterEngine` that is owned by this `FlutterActivity`.
    `FlutterShellArgs` | `getFlutterShellArgs()` | `FlutterActivityAndFragmentDelegate.Host` method that is used by `FlutterActivityAndFragmentDelegate` to obtain Flutter shell arguments when initializing Flutter.
    `String` | `getInitialRoute()` | The initial route that a Flutter app will render upon loading and executing its Dart code.
    `androidx.lifecycle.Lifecycle` | `getLifecycle()` | `FlutterActivityAndFragmentDelegate.Host` method that is used by `FlutterActivityAndFragmentDelegate` to obtain a `Lifecycle` reference as needed.
    `protected Bundle` | `getMetaData()` | Retrieves the meta data specified in the AndroidManifest.xml.
    `RenderMode` | `getRenderMode()` | `FlutterActivityAndFragmentDelegate.Host` method that is used by `FlutterActivityAndFragmentDelegate` to obtain the desired `RenderMode` that should be used when instantiating a `FlutterView`.
    `TransparencyMode` | `getTransparencyMode()` | `FlutterActivityAndFragmentDelegate.Host` method that is used by `FlutterActivityAndFragmentDelegate` to obtain the desired `TransparencyMode` that should be used when instantiating a `FlutterView`.
    `protected void` | `onActivityResult​(int requestCode, int resultCode, Intent data)` |
    `void` | `onBackPressed()` |
    `protected void` | `onCreate​(Bundle savedInstanceState)` |
    `protected void` | `onDestroy()` |
    `void` | `onFlutterSurfaceViewCreated​(FlutterSurfaceView flutterSurfaceView)` |
    `void` | `onFlutterTextureViewCreated​(FlutterTextureView flutterTextureView)` |
    `void` | `onFlutterUiDisplayed()` |
    `void` | `onFlutterUiNoLongerDisplayed()` |
    `protected void` | `onNewIntent​(Intent intent)` |
    `protected void` | `onPause()` |
    `void` | `onPostResume()` |
    `void` | `onRequestPermissionsResult​(int requestCode, String[] permissions, int[] grantResults)` |
    `protected void` | `onResume()` |
    `protected void` | `onSaveInstanceState​(Bundle outState)` |
    `protected void` | `onStart()` |
    `protected void` | `onStop()` |
    `void` | `onTrimMemory​(int level)` |
    `void` | `onUserLeaveHint()` |
    `boolean` | `popSystemNavigator()` | Allow implementer to customize the behavior needed when the Flutter framework calls to pop the Android-side navigation stack.
    `FlutterEngine` | `provideFlutterEngine​(Context context)` | Hook for subclasses to easily provide a custom `FlutterEngine`.
    `PlatformPlugin` | `providePlatformPlugin​(Activity activity, FlutterEngine flutterEngine)` |
    `SplashScreen` | `provideSplashScreen()` | Provides a `SplashScreen` to display while Flutter initializes and renders its first frame.
    `boolean` | `shouldAttachEngineToActivity()` | Hook for subclasses to control whether or not the `FlutterFragment` within this `Activity` automatically attaches its `FlutterEngine` to this `Activity`.
    `boolean` | `shouldDestroyEngineWithHost()` | Returns false if the `FlutterEngine` backing this `FlutterActivity` should outlive this `FlutterActivity`, or true to be destroyed when the `FlutterActivity` is destroyed.
    `boolean` | `shouldDispatchAppLifecycleState()` | Give the host application a chance to take control of the app lifecycle events.
    `boolean` | `shouldHandleDeeplinking()` | Whether to handle the deeplinking from the `Intent` automatically if the `getInitialRoute` returns null.
    `boolean` | `shouldRestoreAndSaveState()` |
    `void` | `updateSystemUiOverlays()` |
    `static FlutterActivity.CachedEngineIntentBuilder` | `withCachedEngine​(String cachedEngineId)` | Creates a `FlutterActivity.CachedEngineIntentBuilder`, which can be used to configure an `Intent` to launch a `FlutterActivity` that internally uses an existing `FlutterEngine` that is cached in `FlutterEngineCache`.
    `static FlutterActivity.NewEngineIntentBuilder` | `withNewEngine()` | Creates an `FlutterActivity.NewEngineIntentBuilder`, which can be used to configure an `Intent` to launch a `FlutterActivity` that internally creates a new `FlutterEngine` using the desired Dart entrypoint, initial route, etc.

    - ### Methods inherited from class android.app.Activity

      `addContentView, attachBaseContext, closeContextMenu, closeOptionsMenu, createPendingResult, dismissDialog, dismissKeyboardShortcutsHelper, dispatchGenericMotionEvent, dispatchKeyEvent, dispatchKeyShortcutEvent, dispatchPopulateAccessibilityEvent, dispatchTouchEvent, dispatchTrackballEvent, dump, enterPictureInPictureMode, enterPictureInPictureMode, findViewById, finish, finishActivity, finishActivityFromChild, finishAffinity, finishAfterTransition, finishAndRemoveTask, finishFromChild, getActionBar, getApplication, getCallingActivity, getCallingPackage, getChangingConfigurations, getComponentName, getContentScene, getContentTransitionManager, getCurrentFocus, getFragmentManager, getIntent, getLastNonConfigurationInstance, getLayoutInflater, getLoaderManager, getLocalClassName, getMaxNumPictureInPictureActions, getMediaController, getMenuInflater, getParent, getParentActivityIntent, getPreferences, getReferrer, getRequestedOrientation, getSearchEvent, getSplashScreen, getSystemService, getTaskId, getTitle, getTitleColor, getVoiceInteractor, getVolumeControlStream, getWindow, getWindowManager, hasWindowFocus, invalidateOptionsMenu, isActivityTransitionRunning, isChangingConfigurations, isChild, isDestroyed, isFinishing, isImmersive, isInMultiWindowMode, isInPictureInPictureMode, isLaunchedFromBubble, isLocalVoiceInteractionSupported, isTaskRoot, isVoiceInteraction, isVoiceInteractionRoot, managedQuery, moveTaskToBack, navigateUpTo, navigateUpToFromChild, onActionModeFinished, onActionModeStarted, onActivityReenter, onApplyThemeResource, onAttachedToWindow, onAttachFragment, onChildTitleChanged, onConfigurationChanged, onContentChanged, onContextItemSelected, onContextMenuClosed, onCreate, onCreateContextMenu, onCreateDescription, onCreateDialog, onCreateDialog, onCreateNavigateUpTaskStack, onCreateOptionsMenu, onCreatePanelMenu, onCreatePanelView, onCreateThumbnail, onCreateView, onCreateView, onDetachedFromWindow, onEnterAnimationComplete, onGenericMotionEvent, onGetDirectActions, onKeyDown, onKeyLongPress, onKeyMultiple, onKeyShortcut, onKeyUp, onLocalVoiceInteractionStarted, onLocalVoiceInteractionStopped, onLowMemory, onMenuItemSelected, onMenuOpened, onMultiWindowModeChanged, onMultiWindowModeChanged, onNavigateUp, onNavigateUpFromChild, onOptionsItemSelected, onOptionsMenuClosed, onPanelClosed, onPerformDirectAction, onPictureInPictureModeChanged, onPictureInPictureModeChanged, onPictureInPictureRequested, onPictureInPictureUiStateChanged, onPostCreate, onPostCreate, onPrepareDialog, onPrepareDialog, onPrepareNavigateUpTaskStack, onPrepareOptionsMenu, onPreparePanel, onProvideAssistContent, onProvideAssistData, onProvideKeyboardShortcuts, onProvideReferrer, onRestart, onRestoreInstanceState, onRestoreInstanceState, onRetainNonConfigurationInstance, onSaveInstanceState, onSearchRequested, onSearchRequested, onStateNotSaved, onTitleChanged, onTopResumedActivityChanged, onTouchEvent, onTrackballEvent, onUserInteraction, onVisibleBehindCanceled, onWindowAttributesChanged, onWindowFocusChanged, onWindowStartingActionMode, onWindowStartingActionMode, openContextMenu, openOptionsMenu, overridePendingTransition, postponeEnterTransition, recreate, registerActivityLifecycleCallbacks, registerForContextMenu, releaseInstance, removeDialog, reportFullyDrawn, requestDragAndDropPermissions, requestPermissions, requestShowKeyboardShortcuts, requestVisibleBehind, requestWindowFeature, requireViewById, runOnUiThread, setActionBar, setContentTransitionManager, setContentView, setContentView, setContentView, setDefaultKeyMode, setEnterSharedElementCallback, setExitSharedElementCallback, setFeatureDrawable, setFeatureDrawableAlpha, setFeatureDrawableResource, setFeatureDrawableUri, setFinishOnTouchOutside, setImmersive, setInheritShowWhenLocked, setIntent, setLocusContext, setMediaController, setPictureInPictureParams, setProgress, setProgressBarIndeterminate, setProgressBarIndeterminateVisibility, setProgressBarVisibility, setRequestedOrientation, setResult, setResult, setSecondaryProgress, setShowWhenLocked, setTaskDescription, setTheme, setTitle, setTitle, setTitleColor, setTranslucent, setTurnScreenOn, setVisible, setVolumeControlStream, setVrModeEnabled, shouldShowRequestPermissionRationale, shouldUpRecreateTask, showAssist, showDialog, showDialog, showLockTaskEscapeMessage, startActionMode, startActionMode, startActivities, startActivities, startActivity, startActivity, startActivityForResult, startActivityForResult, startActivityFromChild, startActivityFromChild, startActivityFromFragment, startActivityFromFragment, startActivityIfNeeded, startActivityIfNeeded, startIntentSender, startIntentSender, startIntentSenderForResult, startIntentSenderForResult, startIntentSenderFromChild, startIntentSenderFromChild, startLocalVoiceInteraction, startLockTask, startManagingCursor, startNextMatchingActivity, startNextMatchingActivity, startPostponedEnterTransition, startSearch, stopLocalVoiceInteraction, stopLockTask, stopManagingCursor, takeKeyEvents, triggerSearch, unregisterActivityLifecycleCallbacks, unregisterForContextMenu`

    - ### Methods inherited from class android.view.ContextThemeWrapper

      `applyOverrideConfiguration, getAssets, getResources, getTheme, setTheme`

    - ### Methods inherited from class android.content.ContextWrapper

      `bindIsolatedService, bindService, bindService, bindServiceAsUser, checkCallingOrSelfPermission, checkCallingOrSelfUriPermission, checkCallingOrSelfUriPermissions, checkCallingPermission, checkCallingUriPermission, checkCallingUriPermissions, checkPermission, checkSelfPermission, checkUriPermission, checkUriPermission, checkUriPermissions, clearWallpaper, createAttributionContext, createConfigurationContext, createContext, createContextForSplit, createDeviceProtectedStorageContext, createDisplayContext, createPackageContext, createWindowContext, createWindowContext, databaseList, deleteDatabase, deleteFile, deleteSharedPreferences, enforceCallingOrSelfPermission, enforceCallingOrSelfUriPermission, enforceCallingPermission, enforceCallingUriPermission, enforcePermission, enforceUriPermission, enforceUriPermission, fileList, getApplicationContext, getApplicationInfo, getAttributionSource, getAttributionTag, getBaseContext, getCacheDir, getClassLoader, getCodeCacheDir, getContentResolver, getDatabasePath, getDataDir, getDir, getDisplay, getExternalCacheDir, getExternalCacheDirs, getExternalFilesDir, getExternalFilesDirs, getExternalMediaDirs, getFilesDir, getFileStreamPath, getMainExecutor, getMainLooper, getNoBackupFilesDir, getObbDir, getObbDirs, getOpPackageName, getPackageCodePath, getPackageManager, getPackageName, getPackageResourcePath, getParams, getSharedPreferences, getSystemServiceName, getWallpaper, getWallpaperDesiredMinimumHeight, getWallpaperDesiredMinimumWidth, grantUriPermission, isDeviceProtectedStorage, isRestricted, isUiContext, moveDatabaseFrom, moveSharedPreferencesFrom, openFileInput, openFileOutput, openOrCreateDatabase, openOrCreateDatabase, peekWallpaper, registerReceiver, registerReceiver, registerReceiver, registerReceiver, removeStickyBroadcast, removeStickyBroadcastAsUser, revokeUriPermission, revokeUriPermission, sendBroadcast, sendBroadcast, sendBroadcastAsUser, sendBroadcastAsUser, sendOrderedBroadcast, sendOrderedBroadcast, sendOrderedBroadcast, sendOrderedBroadcast, sendOrderedBroadcastAsUser, sendStickyBroadcast, sendStickyBroadcast, sendStickyBroadcastAsUser, sendStickyOrderedBroadcast, sendStickyOrderedBroadcastAsUser, setWallpaper, setWallpaper, startForegroundService, startInstrumentation, startService, stopService, unbindService, unregisterReceiver, updateServiceGroup`

    - ### Methods inherited from class android.content.Context

      `getColor, getColorStateList, getDrawable, getString, getString, getSystemService, getText, obtainStyledAttributes, obtainStyledAttributes, obtainStyledAttributes, obtainStyledAttributes, registerComponentCallbacks, sendBroadcastWithMultiplePermissions, unregisterComponentCallbacks`

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

    - ### Methods inherited from interface android.view.Window.Callback

      `onPointerCaptureChanged`

- - ### Field Detail

    - #### FLUTTER_VIEW_ID

          public static final int FLUTTER_VIEW_ID

      The ID of the `FlutterView` created by this activity.

      This ID can be used to lookup `FlutterView` in the Android view hierarchy. For more, see `View.findViewById(int)`.

    - #### delegate

          protected io.flutter.embedding.android.FlutterActivityAndFragmentDelegate delegate

  - ### Constructor Detail

    - #### FlutterActivity

          public FlutterActivity()

  - ### Method Detail

    - #### createDefaultIntent

          @NonNull
          public static Intent createDefaultIntent​(@NonNull
                                                   Context launchContext)

      Creates an `Intent` that launches a `FlutterActivity`, which creates a `FlutterEngine` that executes a `main()` Dart entrypoint, and displays the "/" route as Flutter's initial route.

      Consider using the `withCachedEngine(String)` `Intent` builder to control when the `FlutterEngine` should be created in your application.

      Parameters:
        `launchContext` - The launch context. e.g. An Activity.
      Returns:
        The default intent.

    - #### withNewEngine

          @NonNull
          public static FlutterActivity.NewEngineIntentBuilder withNewEngine()

      Creates an `FlutterActivity.NewEngineIntentBuilder`, which can be used to configure an `Intent` to launch a `FlutterActivity` that internally creates a new `FlutterEngine` using the desired Dart entrypoint, initial route, etc.
      Returns:
        The engine intent builder.

    - #### withCachedEngine

          public static FlutterActivity.CachedEngineIntentBuilder withCachedEngine​(@NonNull
                                                                                   String cachedEngineId)

      Creates a `FlutterActivity.CachedEngineIntentBuilder`, which can be used to configure an `Intent` to launch a `FlutterActivity` that internally uses an existing `FlutterEngine` that is cached in `FlutterEngineCache`.
      Parameters:
        `cachedEngineId` - A cached engine ID.
      Returns:
        The builder.

    - #### getExclusiveAppComponent

          public ExclusiveAppComponent<Activity> getExclusiveAppComponent()

      Returns the Android App Component exclusively attached to `FlutterEngine`.

    - #### onCreate

          protected void onCreate​(@Nullable
                                  Bundle savedInstanceState)

      Overrides:
        `onCreate` in class `Activity`

    - #### provideSplashScreen

          @Nullable
          public SplashScreen provideSplashScreen()

      Description copied from interface: `SplashScreenProvider`
      Provides a `SplashScreen` to display while Flutter initializes and renders its first frame.
      Specified by:
        `provideSplashScreen` in interface `SplashScreenProvider`
      Returns:
        The splash screen.

    - #### onStart

          protected void onStart()

      Overrides:
        `onStart` in class `Activity`

    - #### onResume

          protected void onResume()

      Overrides:
        `onResume` in class `Activity`

    - #### onPostResume

          public void onPostResume()

      Overrides:
        `onPostResume` in class `Activity`

    - #### onPause

          protected void onPause()

      Overrides:
        `onPause` in class `Activity`

    - #### onStop

          protected void onStop()

      Overrides:
        `onStop` in class `Activity`

    - #### onSaveInstanceState

          protected void onSaveInstanceState​(Bundle outState)

      Overrides:
        `onSaveInstanceState` in class `Activity`

    - #### detachFromFlutterEngine

          public void detachFromFlutterEngine()

    - #### onDestroy

          protected void onDestroy()

      Overrides:
        `onDestroy` in class `Activity`

    - #### onActivityResult

          protected void onActivityResult​(int requestCode,
                                          int resultCode,
                                          Intent data)

      Overrides:
        `onActivityResult` in class `Activity`

    - #### onNewIntent

          protected void onNewIntent​(@NonNull
                                     Intent intent)

      Overrides:
        `onNewIntent` in class `Activity`

    - #### onBackPressed

          public void onBackPressed()

      Overrides:
        `onBackPressed` in class `Activity`

    - #### onRequestPermissionsResult

          public void onRequestPermissionsResult​(int requestCode,
                                                 @NonNull
                                                 String[] permissions,
                                                 @NonNull
                                                 int[] grantResults)

      Overrides:
        `onRequestPermissionsResult` in class `Activity`

    - #### onUserLeaveHint

          public void onUserLeaveHint()

      Overrides:
        `onUserLeaveHint` in class `Activity`

    - #### onTrimMemory

          public void onTrimMemory​(int level)

      Specified by:
        `onTrimMemory` in interface `ComponentCallbacks2`
      Overrides:
        `onTrimMemory` in class `Activity`

    - #### getContext

          @NonNull
          public Context getContext()

      `FlutterActivityAndFragmentDelegate.Host` method that is used by `FlutterActivityAndFragmentDelegate` to obtain a `Context` reference as needed.

    - #### getActivity

          @NonNull
          public Activity getActivity()

      `FlutterActivityAndFragmentDelegate.Host` method that is used by `FlutterActivityAndFragmentDelegate` to obtain an `Activity` reference as needed. This reference is used by the delegate to instantiate a `FlutterView`, a `PlatformPlugin`, and to determine if the `Activity` is changing configurations.

    - #### getLifecycle

          @NonNull
          public androidx.lifecycle.Lifecycle getLifecycle()

      `FlutterActivityAndFragmentDelegate.Host` method that is used by `FlutterActivityAndFragmentDelegate` to obtain a `Lifecycle` reference as needed. This reference is used by the delegate to provide Flutter plugins with access to lifecycle events.
      Specified by:
        `getLifecycle` in interface `androidx.lifecycle.LifecycleOwner`

    - #### getFlutterShellArgs

          @NonNull
          public FlutterShellArgs getFlutterShellArgs()

      `FlutterActivityAndFragmentDelegate.Host` method that is used by `FlutterActivityAndFragmentDelegate` to obtain Flutter shell arguments when initializing Flutter.

    - #### getCachedEngineId

          @Nullable
          public String getCachedEngineId()

      Returns the ID of a statically cached `FlutterEngine` to use within this `FlutterActivity`, or `null` if this `FlutterActivity` does not want to use a cached `FlutterEngine`.

    - #### shouldDestroyEngineWithHost

          public boolean shouldDestroyEngineWithHost()

      Returns false if the `FlutterEngine` backing this `FlutterActivity` should outlive this `FlutterActivity`, or true to be destroyed when the `FlutterActivity` is destroyed.

      The default value is `true` in cases where `FlutterActivity` created its own `FlutterEngine`, and `false` in cases where a cached `FlutterEngine` was provided.

    - #### getDartEntrypointFunctionName

          @NonNull
          public String getDartEntrypointFunctionName()

      The Dart entrypoint that will be executed as soon as the Dart snapshot is loaded.

      This preference can be controlled by setting a `<meta-data>` called `FlutterActivityLaunchConfigs.DART_ENTRYPOINT_META_DATA_KEY` within the Android manifest definition for this `FlutterActivity`.

      Subclasses may override this method to directly control the Dart entrypoint.

    - #### getDartEntrypointArgs

          @Nullable
          public List<String> getDartEntrypointArgs()

      The Dart entrypoint arguments will be passed as a list of string to Dart's entrypoint function.

      A value of null means do not pass any arguments to Dart's entrypoint function.

      Subclasses may override this method to directly control the Dart entrypoint arguments.

    - #### getDartEntrypointLibraryUri

          @Nullable
          public String getDartEntrypointLibraryUri()

      The Dart library URI for the entrypoint that will be executed as soon as the Dart snapshot is loaded.

      Example value: "package:foo/bar.dart"

      This preference can be controlled by setting a `<meta-data>` called `FlutterActivityLaunchConfigs.DART_ENTRYPOINT_URI_META_DATA_KEY` within the Android manifest definition for this `FlutterActivity`.

      A value of null means use the default root library.

      Subclasses may override this method to directly control the Dart entrypoint uri.

    - #### getInitialRoute

          public String getInitialRoute()

      The initial route that a Flutter app will render upon loading and executing its Dart code.

      This preference can be controlled with 2 methods:

      1. Pass a boolean as `FlutterActivityLaunchConfigs.EXTRA_INITIAL_ROUTE` with the launching `Intent`, or
      2. Set a `<meta-data>` called `FlutterActivityLaunchConfigs.INITIAL_ROUTE_META_DATA_KEY` for this `Activity` in the Android manifest.
      If both preferences are set, the `Intent` preference takes priority.

      The reason that a `<meta-data>` preference is supported is because this `Activity` might be the very first `Activity` launched, which means the developer won't have control over the incoming `Intent`.

      Subclasses may override this method to directly control the initial route.

      If this method returns null and the `shouldHandleDeeplinking` returns true, the initial route is derived from the `Intent` through the Intent.getData() instead.

    - #### getAppBundlePath

          @NonNull
          public String getAppBundlePath()

      A custom path to the bundle that contains this Flutter app's resources, e.g., Dart code snapshots.

      When this `FlutterActivity` is run by Flutter tooling and a data String is included in the launching `Intent`, that data String is interpreted as an app bundle path.

      When otherwise unspecified, the value is null, which defaults to the app bundle path defined in `FlutterLoader.findAppBundlePath()`.

      Subclasses may override this method to return a custom app bundle path.

    - #### getRenderMode

          @NonNull
          public RenderMode getRenderMode()

      `FlutterActivityAndFragmentDelegate.Host` method that is used by `FlutterActivityAndFragmentDelegate` to obtain the desired `RenderMode` that should be used when instantiating a `FlutterView`.

    - #### getTransparencyMode

          @NonNull
          public TransparencyMode getTransparencyMode()

      `FlutterActivityAndFragmentDelegate.Host` method that is used by `FlutterActivityAndFragmentDelegate` to obtain the desired `TransparencyMode` that should be used when instantiating a `FlutterView`.

    - #### getBackgroundMode

          @NonNull
          protected FlutterActivityLaunchConfigs.BackgroundMode getBackgroundMode()

      The desired window background mode of this `Activity`, which defaults to `FlutterActivityLaunchConfigs.BackgroundMode.opaque`.
      Returns:
        The background mode.

    - #### provideFlutterEngine

          @Nullable
          public FlutterEngine provideFlutterEngine​(@NonNull
                                                    Context context)

      Hook for subclasses to easily provide a custom `FlutterEngine`.

      This hook is where a cached `FlutterEngine` should be provided, if a cached `FlutterEngine` is desired.

      Specified by:
        `provideFlutterEngine` in interface `FlutterEngineProvider`
      Parameters:
        `context` - The current context. e.g. An activity.
      Returns:
        The Flutter engine.

    - #### getFlutterEngine

          @Nullable
          protected FlutterEngine getFlutterEngine()

      Hook for subclasses to obtain a reference to the `FlutterEngine` that is owned by this `FlutterActivity`.
      Returns:
        The Flutter engine.

    - #### getMetaData

          @Nullable
          protected Bundle getMetaData()
                                throws PackageManager.NameNotFoundException

      Retrieves the meta data specified in the AndroidManifest.xml.
      Returns:
        The meta data.
      Throws:
        `PackageManager.NameNotFoundException` - if a package with the given name cannot be found on the system.

    - #### providePlatformPlugin

          @Nullable
          public PlatformPlugin providePlatformPlugin​(@Nullable
                                                      Activity activity,
                                                      @NonNull
                                                      FlutterEngine flutterEngine)

    - #### configureFlutterEngine

          public void configureFlutterEngine​(@NonNull
                                             FlutterEngine flutterEngine)

      Hook for subclasses to easily configure a `FlutterEngine`.

      This method is called after `provideFlutterEngine(Context)`.

      All plugins listed in the app's pubspec are registered in the base implementation of this method unless the FlutterEngine for this activity was externally created. To avoid the automatic plugin registration for implicitly created FlutterEngines, override this method without invoking super(). To keep automatic plugin registration and further configure the FlutterEngine, override this method, invoke super(), and then configure the FlutterEngine as desired.

      Specified by:
        `configureFlutterEngine` in interface `FlutterEngineConfigurator`
      Parameters:
        `flutterEngine` - The Flutter engine.

    - #### cleanUpFlutterEngine

          public void cleanUpFlutterEngine​(@NonNull
                                           FlutterEngine flutterEngine)

      Hook for the host to cleanup references that were established in `configureFlutterEngine(FlutterEngine)` before the host is destroyed or detached.

      This method is called in `onDestroy()`.

      Specified by:
        `cleanUpFlutterEngine` in interface `FlutterEngineConfigurator`
      Parameters:
        `flutterEngine` - The Flutter engine.

    - #### shouldAttachEngineToActivity

          public boolean shouldAttachEngineToActivity()

      Hook for subclasses to control whether or not the `FlutterFragment` within this `Activity` automatically attaches its `FlutterEngine` to this `Activity`.

      This property is controlled with a protected method instead of an `Intent` argument because the only situation where changing this value would help, is a situation in which `FlutterActivity` is being subclassed to utilize a custom and/or cached `FlutterEngine`.

      Defaults to `true`.

      Control surfaces are used to provide Android resources and lifecycle events to plugins that are attached to the `FlutterEngine`. If `shouldAttachEngineToActivity` is true, then this `FlutterActivity` will connect its `FlutterEngine` to itself, along with any plugins that are registered with that `FlutterEngine`. This allows plugins to access the `Activity`, as well as receive `Activity`-specific calls, e.g. `Activity.onNewIntent(Intent)`. If `shouldAttachEngineToActivity` is false, then this `FlutterActivity` will not automatically manage the connection between its `FlutterEngine` and itself. In this case, plugins will not be offered a reference to an `Activity` or its OS hooks.

      Returning false from this method does not preclude a `FlutterEngine` from being attaching to a `FlutterActivity` - it just prevents the attachment from happening automatically. A developer can choose to subclass `FlutterActivity` and then invoke `ActivityControlSurface.attachToActivity(ExclusiveAppComponent, Lifecycle)` and `ActivityControlSurface.detachFromActivity()` at the desired times.

      One reason that a developer might choose to manually manage the relationship between the `Activity` and `FlutterEngine` is if the developer wants to move the `FlutterEngine` somewhere else. For example, a developer might want the `FlutterEngine` to outlive this `FlutterActivity` so that it can be used later in a different `Activity`. To accomplish this, the `FlutterEngine` may need to be disconnected from this `FlutterActivity` at an unusual time, preventing this `FlutterActivity` from correctly managing the relationship between the `FlutterEngine` and itself.

    - #### shouldHandleDeeplinking

          public boolean shouldHandleDeeplinking()

      Whether to handle the deeplinking from the `Intent` automatically if the `getInitialRoute` returns null.

      The default implementation looks `<meta-data>` called `FlutterActivityLaunchConfigs.HANDLE_DEEPLINKING_META_DATA_KEY` within the Android manifest definition for this `FlutterActivity`.

    - #### onFlutterSurfaceViewCreated

          public void onFlutterSurfaceViewCreated​(@NonNull
                                                  FlutterSurfaceView flutterSurfaceView)

    - #### onFlutterTextureViewCreated

          public void onFlutterTextureViewCreated​(@NonNull
                                                  FlutterTextureView flutterTextureView)

    - #### onFlutterUiDisplayed

          public void onFlutterUiDisplayed()

    - #### onFlutterUiNoLongerDisplayed

          public void onFlutterUiNoLongerDisplayed()

    - #### shouldRestoreAndSaveState

          public boolean shouldRestoreAndSaveState()

    - #### shouldDispatchAppLifecycleState

          public boolean shouldDispatchAppLifecycleState()

      Give the host application a chance to take control of the app lifecycle events.

      Return `false` means the host application dispatches these app lifecycle events, while return `true` means the engine dispatches these events.

      Defaults to `true`.

    - #### popSystemNavigator

          public boolean popSystemNavigator()

      Description copied from interface: `PlatformPlugin.PlatformPluginDelegate`
      Allow implementer to customize the behavior needed when the Flutter framework calls to pop the Android-side navigation stack.
      Specified by:
        `popSystemNavigator` in interface `PlatformPlugin.PlatformPluginDelegate`
      Returns:
        true if the implementation consumed the pop signal. If false, a default behavior of finishing the activity or sending the signal to `OnBackPressedDispatcher` will be executed.

    - #### updateSystemUiOverlays

          public void updateSystemUiOverlays()