Package io.flutter.embedding.android

Class FlutterFragmentActivity.NewEngineIntentBuilder

java.lang.Object

io.flutter.embedding.android.FlutterFragmentActivity.NewEngineIntentBuilder

Enclosing class:

FlutterFragmentActivity

public static class FlutterFragmentActivity.NewEngineIntentBuilder
extends Object

Builder to create an Intent that launches a FlutterFragmentActivity with a new FlutterEngine and the desired configuration.

Constructor Summary

Constructors

Constructor	Description
NewEngineIntentBuilder(Class<? extends FlutterFragmentActivity> activityClass)	Constructor that allows this NewEngineIntentBuilder to be used by subclasses of FlutterFragmentActivity.

Method Summary

Modifier and Type	Method	Description
FlutterFragmentActivity.NewEngineIntentBuilder	backgroundMode(FlutterActivityLaunchConfigs.BackgroundMode backgroundMode)	The mode of FlutterFragmentActivity's background, either FlutterActivityLaunchConfigs.BackgroundMode.opaque or FlutterActivityLaunchConfigs.BackgroundMode.transparent.
Intent	build(Context context)	Creates and returns an Intent that will launch a FlutterFragmentActivity with the desired configuration.
FlutterFragmentActivity.NewEngineIntentBuilder	dartEntrypointArgs(List<String> dartEntrypointArgs)	The Dart entrypoint arguments will be passed as a list of string to Dart's entrypoint function.
FlutterFragmentActivity.NewEngineIntentBuilder	initialRoute(String initialRoute)	The initial route that a Flutter app will render in this FlutterFragmentActivity, defaults to "/".

Methods inherited from class java.lang.Object

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

Constructor Details

NewEngineIntentBuilder

public NewEngineIntentBuilder(@NonNull
 Class<? extends FlutterFragmentActivity> activityClass)

Constructor that allows this NewEngineIntentBuilder to be used by subclasses of FlutterFragmentActivity.

Subclasses of FlutterFragmentActivity should provide their own static version of FlutterFragmentActivity.withNewEngine(), which returns an instance of NewEngineIntentBuilder constructed with a Class reference to the FlutterFragmentActivity subclass, e.g.:

return new NewEngineIntentBuilder(MyFlutterActivity.class);

Method Details

initialRoute

@NonNull
public FlutterFragmentActivity.NewEngineIntentBuilder initialRoute(@NonNull
 String initialRoute)

The initial route that a Flutter app will render in this FlutterFragmentActivity, defaults to "/".

backgroundMode

@NonNull
public FlutterFragmentActivity.NewEngineIntentBuilder backgroundMode(@NonNull
 FlutterActivityLaunchConfigs.BackgroundMode backgroundMode)

The mode of FlutterFragmentActivity's background, either FlutterActivityLaunchConfigs.BackgroundMode.opaque or FlutterActivityLaunchConfigs.BackgroundMode.transparent.

The default background mode is FlutterActivityLaunchConfigs.BackgroundMode.opaque.

Choosing a background mode of FlutterActivityLaunchConfigs.BackgroundMode.transparent will configure the inner FlutterView of this FlutterFragmentActivity to be configured with a FlutterTextureView to support transparency. This choice has a non-trivial performance impact. A transparent background should only be used if it is necessary for the app design being implemented.

A FlutterFragmentActivity that is configured with a background mode of FlutterActivityLaunchConfigs.BackgroundMode.transparent must have a theme applied to it that includes the following property: <item name="android:windowIsTranslucent">true</item>.

dartEntrypointArgs

@NonNull
public FlutterFragmentActivity.NewEngineIntentBuilder dartEntrypointArgs(@Nullable
 List<String> dartEntrypointArgs)

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.

Parameters:

dartEntrypointArgs - The Dart entrypoint arguments.

Returns:

The engine intent builder.

build

@NonNull
public Intent build(@NonNull
 Context context)

Creates and returns an Intent that will launch a FlutterFragmentActivity with the desired configuration.