didChangeAppLifecycleState method
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
void didChangeAppLifecycleState(AppLifecycleState state) {
super.didChangeAppLifecycleState(state);
switch (state) {
case AppLifecycleState.resumed:
final pendingView = _pendingView;
_pendingView = null;
_startView(pendingView);
break;
case AppLifecycleState.inactive:
case AppLifecycleState.paused:
case AppLifecycleState.detached:
default:
if (_currentView != null) {
_pendingView = _currentView;
_stopView(_currentView);
}
break;
}
}