AndroidView class

Embeds an Android view in the Widget hierarchy.

Requires Android API level 23 or greater.

Embedding Android views is an expensive operation and should be avoided when a Flutter equivalent is possible.

The embedded Android view is painted just like any other Flutter widget and transformations apply to it as well.

The widget fills all available space, the parent of this object must provide bounded layout constraints.

The widget participates in Flutter's gesture arenas, and dispatches touch events to the platform view iff it won the arena. Specific gestures that should be dispatched to the platform view can be specified in the gestureRecognizers constructor parameter. If the set of gesture recognizers is empty, a gesture will be dispatched to the platform view iff it was not claimed by any other gesture recognizer.

The Android view object is created using a PlatformViewFactory. Plugins can register platform view factories with PlatformViewRegistry#registerViewFactory.

Registration is typically done in the plugin's registerWith method, e.g:

  public static void registerWith(Registrar registrar) {
    registrar.platformViewRegistry().registerViewFactory("webview", WebViewFactory(registrar.messenger()));
  }

The platform view's lifetime is the same as the lifetime of the State object for this widget. When the State is disposed the platform view (and auxiliary resources) are lazily released (some resources are immediately released and some by platform garbage collector). A stateful widget's state is disposed when the widget is removed from the tree or when it is moved within the tree. If the stateful widget has a key and it's only moved relative to its siblings, or it has a GlobalKey and it's moved within the tree, it will not be disposed.