小编典典

找不到Flutter Firebase.signInWithGoogle方法

flutter

我正在尝试在Flutter应用程序中添加Google身份验证。但是我的
Android Studio无法在FirebaseAuth类下找到方法signInWithGoogle。我的意思是说我写FirebaseAuth的时候。signInWithGoogle Android Studio抱怨说 未为Firebase类定义方法signInWithGoogle。

我已经有Firebase.signInWithEmailAndPassword,并且
工作正常。

我在pubspec.yaml firebase_auth中具有以下依赖项:^ 0.8.0 + 1

以下是我在课堂上的进口……

import 'package:firebase_auth/firebase_auth.dart';
import 'package:flutter/material.dart';
import 'package:google_sign_in/google_sign_in.dart';
import 'package:my_project/auth.dart';
import 'package:my_project/register.dart';
import 'package:my_project/signin/button_list.dart';
import 'package:my_project/signin/button_view.dart';
import 'package:my_project/utils.dart';
class _LoginPageState extends State<LoginPage> {
 final formKey = GlobalKey<FormState>();

// Google Sign In
final GoogleSignIn _googleSignIn = GoogleSignIn();
final FirebaseAuth _auth = FirebaseAuth.instance; // No errors so far

另外,当我单击ctrl +空格以查看FirebaseAuth下的所有方法时,它根本没有显示signInWithGoogle方法。


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2020-08-13

共1个答案

小编典典

查看firebase_auth github存储库
https://github.com/flutter/plugins/blob/master/packages/firebase_auth/example/lib/main.dart#L70

Future<String> _testSignInWithGoogle() async {
    final GoogleSignInAccount googleUser = await _googleSignIn.signIn();
    final GoogleSignInAuthentication googleAuth =
        await googleUser.authentication;
    final AuthCredential credential = GoogleAuthProvider.getCredential(
      accessToken: googleAuth.accessToken,
      idToken: googleAuth.idToken,
    );

    final AuthResult authResult = await _auth.signInWithCredential(credential);
    final FirebaseUser user = authResult.user;
    assert(user.email != null);
    assert(user.displayName != null);
    assert(!user.isAnonymous);
    assert(await user.getIdToken() != null);

    final FirebaseUser currentUser = await _auth.currentUser();
    assert(user.uid == currentUser.uid);

    return 'signInWithGoogle succeeded: $user';
}
2020-08-13