Firebase不会返回用户

如何解决Firebase不会返回用户

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

错误：

发生异常。 PlatformException （PlatformException（firebase_auth， com.google.firebase.FirebaseException：发生内部错误。 [错误403（禁止）！1

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403。这是一个错误。

您的客户不 有权获取URL 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 } 从这里 服务器。我们知道的就这些。 ]， {}， 空值））

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")),);
  }
}

SignIn.dart

class ViewController: UIViewController {

@IBOutlet weak var sampImage: UIImageView!
override func viewDidLoad() {
    super.viewDidLoad()
    
    let tapGestureRecognizer = UITapGestureRecognizer(target: self,action: #selector(imageTapped(tapGestureRecognizer:)))
    sampImage.isUserInteractionEnabled = true
    sampImage.addGestureRecognizer(tapGestureRecognizer)
    }


@objc func imageTapped(tapGestureRecognizer: UITapGestureRecognizer)
{
let tappedImage = tapGestureRecognizer.view as! UIImageView
let newImageView = UIImageView(image: tappedImage.image)
newImageView.frame = UIScreen.main.bounds
newImageView.backgroundColor = .black
newImageView.contentMode = .scaleAspectFit
newImageView.isUserInteractionEnabled = true
let tap = UITapGestureRecognizer(target: self,action: #selector(dismissFullscreenImage))
newImageView.addGestureRecognizer(tap)
self.view.addSubview(newImageView)
self.navigationController?.isNavigationBarHidden = true
self.tabBarController?.tabBar.isHidden = true
}

@objc func dismissFullscreenImage(_ sender: UITapGestureRecognizer) {
self.navigationController?.isNavigationBarHidden = false
self.tabBarController?.tabBar.isHidden = false
sender.view?.removeFromSuperview()
}
}

解决方法

在google-service.json和build.gradle文件中检查项目的ID必须相同。