@override
  void initState() {
    super.initState();
    new Timer(new Duration(milliseconds: 200), () {
      checkFirstSeen();
    });
  }

  Future checkFirstSeen() async {
    SharedPreferences prefs = await SharedPreferences.getInstance();
    bool _seen = (prefs.getBool('seen') ?? false);

    if (_seen) {
      Navigator.of(context).pushReplacement(
          new MaterialPageRoute(builder: (context) => new MyAppState()));
    } else {
      prefs.setBool('seen', true);
      Navigator.of(context).pushReplacement(
          new MaterialPageRoute(builder: (context) => new AskPermissions()));
    }
  }