Refresh the app when opened from background state

 class _DashboardScreenState extends State<DashboardScreen> with WidgetsBindingObserver{

  @override

  void initState() {

    super.initState();

    WidgetsBinding.instance.addObserver(this);

    FlutterDownloader.registerCallback(downloadCallback, step: 1);

  }

  @override

  void dispose() {

    unbindBackgroundIsolate();

    WidgetsBinding.instance.removeObserver(this);

    super.dispose();

  }

  @override

  void didChangeAppLifecycleState(AppLifecycleState state) {

    if (state == AppLifecycleState.resumed) {

      context.read<FetchAppListBloc>().add(RefreshAppListEvent());

    }

  }

also need:

switch (state) { case AppLifecycleState.resumed: // -- print('Resumed'); break; case AppLifecycleState.inactive: // -- print('Inactive'); break; case AppLifecycleState.paused: // -- print('Paused'); break; case AppLifecycleState.detached: // -- print('Detached'); break; }