flutter check if logged in

Future<void> 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(), )); }

if user is logged in or not check flutter

int main(){
   runApp(  YourApp() )
}

class YourApp extends StatelessWidget{

    @override
    Widget build(BuildContext context){
        return FutureBuilder<FirebaseUser>(
            future: FirebaseAuth.instance.currentUser(),
            builder: (BuildContext context, AsyncSnapshot<FirebaseUser> snapshot){
                       if (snapshot.hasData){
                           FirebaseUser user = snapshot.data; // this is your user instance
                           /// is because there is user already logged
                           return MainScreen();
                        }
                         /// other way there is no user logged.
                         return LoginScreen();
             }
          );
    }
}

Posted by: Guest on June-12-2021

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