check if app is in foreground or background flutter

class _MyHomePageState extends State<MyHomePage> with WidgetsBindingObserver { late AppLifecycleState _notification; @override void didChangeAppLifecycleState(AppLifecycleState state) { setState(() { _notification = state; }); } @override initState() { super.initState(); WidgetsBinding.instance!.addObserver(this); ... } @override void dispose() { WidgetsBinding.instance!.removeObserver(this); super.dispose(); } }

how to check Flutter app comes to foreground

class _HomePageState extends State<HomePage> with WidgetsBindingObserver {
  // This variable will tell you whether the application is in foreground or not. 
  bool _isInForeground = true;

  @override
  void initState() {
    super.initState();
    WidgetsBinding.instance.addObserver(this);
  }
  
  @override
  void didChangeAppLifecycleState(AppLifecycleState state) {
    super.didChangeAppLifecycleState(state);
    _isInForeground = state == AppLifecycleState.resumed;
  }

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

  @override
  Widget build(BuildContext context) => Scaffold();
}

Posted by: Guest on May-23-2021

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