How to Handle App Lifecycle in the Flutter App?

The most confusing idea transitioning from Android and/or iOS is to understand how Flutter manages its lifecycle. For this, first, you need to know about what is Flutter Application Lifecycle. So now, let us begin with how to handle the App Lifecycle in the Flutter app.

How to handle App Lifecycle in the flutter App?

The state in which it is described is called enum class AppLifecycleState .

The method called when the system puts the app in the background or returns the app to the foreground is called didChangeAppLifecycleState.

You can use this as an example:

1. class AppLifecycleReactor extends StatefulWidget
2. {
3. ??@override
4. ??AppLifecycleReactorState createState() => AppLifecycleReactorState();
5. }
6. ?
7. class _AppLifecycleReactorState extends State with WidgetsBindingObserver {
8. ?
9. ??@override
10. ??void initState(){
11. ????super.initState();
12. ????WidgetsBinding.instance!.addObserver(this);
13. ??}
14. ?
15. ??@override
16. ??void dispose(){
17. ????super.dispose();
18. ????WidgetsBinding.instance!.removeObserver(this);
19. ??}
20. ?
21. ??@override
22. ??void didChangeAppLifecycleState(AppLifecycleState state) {
23. ????super.didChangeAppLifecycleState(state);
24. ????print("App Lifecycle State : $state");
25. ??}
26. ?
27. ??@override
28. ??Widget build(BuildContext context) {
29. ????return Scaffold();
30. ??}
31. }

In this article, we learned about How to handle App Lifecycle in the flutter App.

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