我是 Flutter 的初学者，遇到了这样的问题。我需要做到这一点，以便在登录我的应用程序时，我的邮件显示在 firebase 中。我进行了授权，但是当我单击按钮(使用谷歌登录)时出现错误。 这是我的 pubspec.yaml:
dependencies:
http: ^0.12.0
flutter:
sdk: flutter
location: ^1.4.1
firebase_core: ^0.2.5
firebase_auth: ^0.5.20
google_sign_in: ^3.2.2
I can not get rid of this problem
import 'package:flutter/material.dart';
import 'package:logining/home_screen/home_screen.dart';
import 'package:firebase_auth/firebase_auth.dart';
import 'package:google_sign_in/google_sign_in.dart';
class LoginScreen extends StatefulWidget {
@override
LoginScreenState createState() {
return new LoginScreenState();
}
}
class LoginScreenState extends State<LoginScreen> {
String _email, _password;
bool _obscureText = true;
GoogleSignIn googleAuth = GoogleSignIn();
final GlobalKey<FormState> _formKey = GlobalKey<FormState>();
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: Text('Login'),
),
resizeToAvoidBottomPadding: false,
body: ListView(children: <Widget>[
Container(
child: Form(
key: _formKey,
autovalidate: true,
child: Column(
children: <Widget>[
SizedBox(
height: 50,
),
Padding(
child: Image.asset(
'images/logo.png',
width: 100.0,
height: 100.0,
),
padding: EdgeInsets.fromLTRB(50, 0, 50, 40),
),
Padding(
padding: EdgeInsets.fromLTRB(25, 0, 50, 10),
child: TextFormField(
validator: (email) {
if (email.isEmpty) {
return 'Provide an Email';
}
},
style: TextStyle(
color: Color(0xFF01579B),
fontSize: 18.0,
),
decoration: InputDecoration(
border: OutlineInputBorder(
borderRadius: BorderRadius.circular(30),
),
hintText: 'Enter your Email',
labelText: "Email",
icon: Padding(
padding: EdgeInsets.only(top: 20.0),
child: Icon(Icons.email),
)),
onSaved: (email) => _email = email,
),
),
Padding(
padding: EdgeInsets.fromLTRB(25, 0, 50, 10),
child: TextFormField(
validator: (password) {
if (password.isEmpty) {
return 'Provide an password';
}
},
obscureText: _obscureText,
style: TextStyle(
color: Color(0xFF01579B),
fontSize: 18.0,
),
decoration: InputDecoration(
border: OutlineInputBorder(
borderRadius: BorderRadius.circular(30),
),
hintText: 'Enter your password',
labelText: "Password",
icon: Padding(
padding: EdgeInsets.only(top: 15.0),
child: Icon(Icons.lock),
),
suffixIcon: GestureDetector(
onTap: () {
setState(() {
_obscureText = !_obscureText;
});
},
child: Icon(
_obscureText
? Icons.visibility
: Icons.visibility_off,
semanticLabel: _obscureText
? 'show password'
: 'hide password',
),
),
),
onSaved: (password) => _password = password,
),
),
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Padding(
padding: EdgeInsets.symmetric(horizontal: 10),
child: RaisedButton(
color: Color(0xFFD50000),
textColor: Color(0xFFFFFFFF),
child: Text('Login with Google'),
onPressed: (){
googleAuth.signIn().then((result){
result.authentication.then((googleKey){
FirebaseAuth.instance.signInWithGoogle(
idToken: googleKey.idToken,
accessToken: googleKey.accessToken
).then((signedInUser){
print('Signed in as ${signedInUser.displayName}');
Navigator.of(context).pushReplacementNamed('/list');
});
}).catchError((onError){
print(onError);
});
}).catchError((onError){
print(onError);
});
},
),
),
Padding(
padding: EdgeInsets.symmetric(horizontal: 10),
child: RaisedButton(
color: Color(0xFF448AFF),
textColor: Color(0xFFFFFFFF),
child: Text('Login'),
onPressed: signIn,
),
),
]),
Padding(
padding:
EdgeInsets.symmetric(horizontal: 10, vertical: 5),
child: FlatButton(
textColor: Color(0xFF448AFF),
child: Text('Forgot Password'),
onPressed: () {
print('onPressed');
},
),
),
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Padding(
padding: EdgeInsets.fromLTRB(50, 70, 0, 10),
child: Text(
'Still do not have an account ',
style: TextStyle(color: Color(0xFF9E9E9E)),
),
),
Padding(
padding: EdgeInsets.fromLTRB(0, 70, 30, 10),
child: FlatButton(
textColor: Color(0xFF448AFF),
child: Text('registration'),
onPressed: () {
Navigator.of(context).pushNamedAndRemoveUntil(
'/registration', (Route<dynamic> route) => false);
},
),
),
],
),
],
),
),
),
]),
),
);
}
void signIn() async {
if(_formKey.currentState.validate()){
_formKey.currentState.save();
try{
FirebaseUser user = await FirebaseAuth.instance.signInWithEmailAndPassword(email: _email, password: _password);
Navigator.push(context, MaterialPageRoute(builder: (context) => HomeScreen(user: user)));
}catch(e){
print(e.message);
}
}
}
}
最佳答案
您需要在此处添加您的 SHA 指纹:
您可以在这里找到更多信息:https://developers.google.com/android/guides/client-auth
您可以转到 cmd 并编写类似以下内容来获取计算机的调试 SHA key :
“C:\Program Files\Java\jdk1.8.0_181\bin\keytool.exe”-exportcert -list -v -alias androiddebugkey -keystore %USERPROFILE%\.android\debug.keystore
关于dart - Flutter:通过 Google Firebase 授权时出错，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/54478141/