auth.dart

class SplashScreen extends StatefulWidget {
  @override
  _SplashScreenState createState() => _SplashScreenState();
}

class _SplashScreenState extends State<SplashScreen> {
  Future onloadDecider() async {
    FirebaseUser user = await FirebaseAuth.instance.currentUser();
    if(user == null){
      print("No User");
      Navigator.pushReplacement(context, MaterialPageRoute(builder: (context)=>Material(
        child: ChangeNotifierProvider(
          builder: (_)=>SessionManagement(),
          child: FirebaseSession(),
        ),
      )));
    }else{
      print("Current User : "+user.uid);
      Navigator.pushReplacement(context, MaterialPageRoute(builder: (context)=>Material(
        child: MultiProvider(
          providers: [
            ChangeNotifierProvider(builder: (_)=>SessionManagement(),),
          ],
          child: SpotifyHome(),
        ),
      )));
    }
  }
  @override
  void initState() {
    Future.delayed(Duration(seconds: 2), (){
      onloadDecider();
    });
    super.initState();
  }
  @override
  Widget build(BuildContext context) {
    return Container(
      child: Center(
        child: Image.asset("./images/spotify_logo_title.png"),
      ),
    );
  }
}