How to check if the user is logged in, if so show other screen?

Question

My first screen is a login screen and it needs to check if the user is logged in to open the home screen directly but I get an error using this check.

I\'m doing the che

Answer 1

Achieved without Firebase, but by using SharedPreferences

here is a simple code: Main.dart

Future main() async {
  WidgetsFlutterBinding.ensureInitialized();
  final SharedPreferences prefs = await SharedPreferences.getInstance();
  var isLoggedIn = (prefs.getBool('isLoggedIn') == null) ? false : prefs.getBool('isLoggedIn');
  runApp(MaterialApp(
    debugShowCheckedModeBanner: false,
    home: isLoggedIn ? anotherPage() : loginPage(),
  ));
}

using flutter package: shared_preferences