为什么在颤动中点击通知时路由不起作用？ （项目基于GetX和flutter本地推送通知包）

Question

Good day. I know that we use the onSelectNotification property to get the callback when the user tap on the notification in using the flutter local push notification package.

  Future<void> _initialize() async {
    await _configureLocalTimeZone();
    AndroidInitializationSettings initializationSettingsAndroid =
        AndroidInitializationSettings('@mipmap/ic_launcher');

    IOSInitializationSettings initializationSettingsIOS =
        IOSInitializationSettings(
            onDidReceiveLocalNotification: _onDidReceiveLocalNotification);

    InitializationSettings initializationSettings = InitializationSettings(
        android: initializationSettingsAndroid, iOS: initializationSettingsIOS);

    await _flutterLocalNotificationsPlugin.initialize(initializationSettings,
        onSelectNotification: _onSelectNotification);        // This is for the callback
  }

This is the _onSelectsNotification function.

  Future _onSelectNotification(String payload) async {
    if (payload != null) {
      print('notification payload: $payload');
    }
    BuildContext context;
    await Navigator.of(context)
        .push(MaterialPageRoute(builder: (BuildContext context) {
      return NotificationsView();
    }));                           // ***** This is not working. with no error.
  }

I am not sure what to use for the context. I think the next route to the NotificationView() is not working because of the context value. Could you please help me with this issue? I am now using the GetX for the state management.

Thanks.

Answer 1

I solved this problem with Get.toNamed() My fault was in not returning in the _onSelectNotification function.

  Future _onSelectNotification(String payload) async {
    if (payload != null) {
      print('notification payload: $payload');
    }
    return Get.toNamed(Routes.NOTIFICATIONS);
  }

This is working well.

But I still don't know how to get the context from another state class. In the previous post, I passed the null for the context. I know that this was wrong. How to get?

Answer 2

The code is not working because by the time you call your Navigator, the widget is not finished building.A simple fix is to wrap the Navigator.of(context) with Future like this.

Future.delayed(Duration.zero).then((_){
Navigator.of(context).push(
    MaterialPageRoute(builder: (BuildContext context) {
      return NotificationsView();
    }
  ));
});