didChangeAppLifecycleState method

@override Future<void> didChangeAppLifecycleState(AppLifecycleState state)

Called when the system puts the app in the background or returns the app to the foreground.

An example of implementing this method is provided in the class-level documentation for the WidgetsBindingObserver class.

This method exposes notifications from SystemChannels.lifecycle.

See also:

• AppLifecycleListener, an alternative API for responding to application lifecycle changes.

Implementation

@override
Future<void> didChangeAppLifecycleState(AppLifecycleState state) async {
  _statePrevious = _stateCurrent;
  _stateCurrent = state;
  isPaused = state.isPause;

  onChangeState(state);
}