Flutter App lifecycle (Android/ Ios )

Is any Activity life cycle method in flutter app android ?

Like:

onCreate()
onResume()
onDestroy()


Or:

viewDidload()
viewWillAppear()


How to handle application life cycle when make an app with flutter?

There is a method called when the system put the app in the background or return the app to foreground named didChangeAppLifecycleState.

Example with widgets:

class _AppLifecycleReactorState extends State<AppLifecycleReactor> with WidgetsBindingObserver {
@override
void initState() {
super.initState();
WidgetsBinding.instance.addObserver(this);
}

@override
void dispose() {
WidgetsBinding.instance.removeObserver(this);
super.dispose();
}

AppLifecycleState _notification;

@override
void didChangeAppLifecycleState(AppLifecycleState state) {
setState(() { _notification = state; });
}

@override
Widget build(BuildContext context) {
return new Text('Last notification: $_notification');
}
}


Also there are CONSTANTS to know the states that an application can be in, eg:


inactive
paused
resumed
suspending


The usage of these constants would be the value of the constant e.g:

const AppLifecycleState(state)