Question

有关Flutter和Firebase身份验证的教程系列。克隆项目并运行后，在auth.dart和login_page.dart中删除了以下错误。我该如何解决？

不能将类型“ AuthResult”的值分配给类型“ FirebaseUser”的变量

代码如下：

 class Auth implements BaseAuth {
  final FirebaseAuth _firebaseAuth = FirebaseAuth.instance;


  Future<String> signIn(String email, String password) async {
    FirebaseUser user = await _firebaseAuth.signInWithEmailAndPassword(email: email, password: password);
    return user.uid;
  }
  Future<String> createUser(String email, String password) async {
    FirebaseUser user = await _firebaseAuth.createUserWithEmailAndPassword(email: email, password: password);
    return user.uid;
  }

，并且未为类“ BaseAuth”定义登录方法“ signInWithEmailAndPassword”中的错误。代码如下：

 Future<void> validateAndSubmit() async {
    if (validateAndSave()) {
      try {
        final BaseAuth auth = AuthProvider.of(context).auth;
        if (_formType == FormType.login) {
          final String userId = await auth.signInWithEmailAndPassword(_email, _password);
          print('Signed in: $userId');
        } else {
          final String userId = await auth.createUserWithEmailAndPassword(_email, _password);
          print('Registered user: $userId');
        }
        widget.onSignedIn();
      } catch (e) {
        print('Error: $e');
      }
    }
  }

Answer 1

最近，firebase_auth软件包上已有更新，现在这些方法返回Future<AuthResult>。如果您想要FirebaseUser，则需要获取AuthResult.user。这样的事情应该适合您：

FirebaseUser user = (await _firebaseAuth.signInWithEmailAndPassword(email: email, password: password)).user;

Firebase身份验证“无法将类型'AuthResult'的值分配给类型'FirebaseUser'的变量”

1 个答案: