userlogged in or not sharedprefernces in flutter
Future<void> main() async {
WidgetsFlutterBinding.ensureInitialized();
SharedPreferences prefs = await SharedPreferences.getInstance();
var email = prefs.getString('email');
print(email);
runApp(MaterialApp(home: email == null ? Login() : Home()));
}
//Save the required user details after the successful login
class Login extends StatelessWidget {
@override
Widget build(BuildContext context) {
return Scaffold(
body: Center(
child: RaisedButton(
onPressed: () async {
//after the login REST api call && response code ==200
SharedPreferences prefs = await SharedPreferences.getInstance();
prefs.setString('email', '[email protected]');
Navigator.pushReplacement(context,
MaterialPageRoute(builder: (BuildContext ctx) => Home()));
},
child: Text('Login'),
),
),
);
}
}
//clear the details on logout
class Home extends StatelessWidget {
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Home'),
),
body: Center(
child: RaisedButton(
onPressed: () async {
SharedPreferences prefs = await SharedPreferences.getInstance();
prefs.remove('email');
Navigator.pushReplacement(context,
MaterialPageRoute(builder: (BuildContext ctx) => Login()));
},
child: Text('Logout'),
),
),
);
}
}