firebase - Firebase不会返回用户

Question

我有一个与Firebase交互的AuthService类。然后在Signin.dart中，我想获得该用户，但是每次遇到问题时，我都会获得该用户。我收到错误消息，表明Firebase无法发送用户。
错误:

Exception has occurred. PlatformException(PlatformException(firebase_auth,com.google.firebase.FirebaseException: An internal error has occurred.[ Error 403 (Forbidden)!!1

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403. That’s an error.

Your client does nothave permission to get URL/identitytoolkit/v3/relyingparty/signupNewUser from thisserver. That’s all we know. ], {}, null))

import 'package:firebase_auth/firebase_auth.dart';

class AuthService {
  final FirebaseAuth _auth = FirebaseAuth.instance;

  // sign in anon
  Future signInAnon() async {
    try {
      UserCredential userCredential = await _auth.signInAnonymously();
      User user = userCredential.user;
      return user;
    } catch (e) {
      print(e.toString());
      return null;
    }
  }

  // sign in with email and password

  // register with email and password

  // sign out

}

Dart

import 'package:auth_flutter_coffe/Services/Auth.dart';
import 'package:flutter/material.dart';

class SignIn extends StatefulWidget {
  @override
  _SignInState createState() => _SignInState();
}

class _SignInState extends State<SignIn> {
  final AuthService _auth = AuthService();

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: Colors.brown[700],
      appBar: AppBar(
        title: Text("SignIn"),
        centerTitle: true,
        backgroundColor: Colors.brown[900],
      ),
      body: Container(
        padding: EdgeInsets.symmetric(horizontal: 50.0, vertical: 50.0),
        child: RaisedButton.icon(
            onPressed: () async {
              dynamic result = await _auth.signInAnon();
              if (result == null) {
                print("You Have to be SignIn");
              } else {
                print("SignIn");
                print(result);
              }
            },
            icon: Icon(Icons.transit_enterexit),
            label: Text("SignIn")),
      ),
    );
  }
}

Answer 1

检查google-service.json中的项目ID，并且build.gradle文件必须相同。