Flutter App Lifecycle Test

main.dart

// Date: 2023/05/19
// From anomoly user named SI from Line OpenChat Flutter-Disgussion-Group
// For Education & Learning Purpose

void main() {
  runApp(MyApp());
}

class MyApp extends StatefulWidget {
  const MyApp({super.key});

  @override
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> with WidgetsBindingObserver {
  @override
  void initState() {
    super.initState();
    debugPrint('App初始化');
    WidgetsBinding.instance.addObserver(this);
  }

  @override
  void dispose() {
    debugPrint('App bye');
    WidgetsBinding.instance.removeObserver(this);
    super.dispose();
  }

  @override
  void didChangeAppLifecycleState(AppLifecycleState state) {
    super.didChangeAppLifecycleState(state);
    switch (state) {
      case AppLifecycleState.resumed:
        debugPrint('AppLifecycleState.resumed:恢復');
        break;
      case AppLifecycleState.inactive:
        debugPrint('AppLifecycleState.inactive:休息');
        break;
      case AppLifecycleState.paused:
        debugPrint('AppLifecycleState.paused:關閉');
        break;
      case AppLifecycleState.detached:
        debugPrint('AppLifecycleState.detached:分離');
        break;
    }
  }

  @override
  Widget build(BuildContext context) {
    return const Placeholder();
  }
}