如何从flutter中的firebase取回email的ID？

Question

My login page

class _MyLoginState extends State<MyLogin> {

  final FirebaseAuth _auth = FirebaseAuth.instance;

  //editing controller
  final TextEditingController emailController = TextEditingController();
  final TextEditingController passwordController = TextEditingController();
  int _success = 1 ;
  late String _userEmail = "";

  void _signIn() async {
    final User? user = (await _auth.signInWithEmailAndPassword(
        email: emailController.text, password: passwordController.text)
    ).user;

    if (user != null) {
      setState(() {
        _success = 2;
        _userEmail = user.email!;
      });
    }else {
      setState(() {
        _success = 3;
      });
    }
  }

My profile screen for a user

class _UserAccState extends State<UserAcc> {


  final _auth = FirebaseAuth.instance;
  late String userEmail;
  void getCurrentUserEmail() async {
    final user =
    _auth.currentUser().then((value) => userEmail = value.email);
  }

  late final TextEditingController emailController;

The code in UserAcc that i have posted, will it retrieve the email id from firebase? If not, tell me how to do it. I'm a beginner at flutter. I'm very much confused.

Answer 1

This is very close to being correct, but to get the Email, you must use a function which actually returns a value (String in this case).

Right now you are setting the 'user' variable to the email, but it has not been returned.