Package io.flutter.plugin.platform

# Interface PlatformPlugin.PlatformPluginDelegate

All Known Implementing Classes:
  `FlutterActivity`, `FlutterFragment`

Enclosing class:
  `PlatformPlugin`

public static interface PlatformPlugin.PlatformPluginDelegate
The `PlatformPlugin` generally has default behaviors implemented for platform functionalities requested by the Flutter framework. However, functionalities exposed through this interface could be customized by the more public-facing APIs that implement this interface such as the `FlutterActivity` or the `FlutterFragment`.

- ## Method Summary

  Modifier and Type
  Method
  Description
  `boolean`
  `popSystemNavigator()`
  Allow implementer to customize the behavior needed when the Flutter framework calls to pop the Android-side navigation stack.
  `default void`
  `setFrameworkHandlesBack(boolean frameworkHandlesBack)`
  The Flutter application would or would not like to handle navigation pop events itself.

- ## Method Details

  - ### popSystemNavigator

    boolean popSystemNavigator()
    Allow implementer to customize the behavior needed when the Flutter framework calls to pop the Android-side navigation stack.
    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.

  - ### setFrameworkHandlesBack

    default void setFrameworkHandlesBack(boolean frameworkHandlesBack)
    The Flutter application would or would not like to handle navigation pop events itself.

    Relevant for registering and unregistering the app's OnBackInvokedCallback for the Predictive Back feature, for example as in `FlutterActivity`.