在Firebase和Flutter中使用OAuth凭据进行注册和登录的步骤如下:
dependencies:
firebase_auth: ^0.20.1
google_sign_in: ^4.5.1
然后运行flutter pub get
命令来获取这些依赖。
apply plugin: 'com.google.gms.google-services'
import 'package:firebase_auth/firebase_auth.dart';
import 'package:google_sign_in/google_sign_in.dart';
final FirebaseAuth _auth = FirebaseAuth.instance;
final GoogleSignIn _googleSignIn = GoogleSignIn();
Future<UserCredential> signInWithGoogle() async {
final GoogleSignInAccount googleSignInAccount = await _googleSignIn.signIn();
final GoogleSignInAuthentication googleSignInAuthentication =
await googleSignInAccount.authentication;
final AuthCredential credential = GoogleAuthProvider.credential(
accessToken: googleSignInAuthentication.accessToken,
idToken: googleSignInAuthentication.idToken,
);
final UserCredential authResult = await _auth.signInWithCredential(credential);
final User user = authResult.user;
assert(!user.isAnonymous);
assert(await user.getIdToken() != null);
final User currentUser = _auth.currentUser;
assert(user.uid == currentUser.uid);
return authResult;
}
void signOutGoogle() async {
await _googleSignIn.signOut();
print("User Signed Out");
}
import 'auth.dart';
class LoginPage extends StatelessWidget {
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Login'),
),
body: Center(
child: RaisedButton(
child: Text('Sign in with Google'),
onPressed: () {
signInWithGoogle().then((userCredential) {
// 登录成功后的处理逻辑
}).catchError((error) {
// 登录失败后的处理逻辑
});
},
),
),
);
}
}
import 'auth.dart';
class RegisterPage extends StatelessWidget {
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Register'),
),
body: Center(
child: RaisedButton(
child: Text('Register with Google'),
onPressed: () {
signInWithGoogle().then((userCredential) {
// 注册成功后的处理逻辑
}).catchError((error) {
// 注册失败后的处理逻辑
});
},
),
),
);
}
}
这样,你就可以在Firebase和Flutter中使用OAuth凭据进行注册和登录了。当用户点击登录或注册按钮时,会弹出一个Google登录界面,用户可以使用他们的Google账号进行身份验证。成功登录或注册后,你可以根据需要进行进一步的处理逻辑。
请注意,以上代码示例仅涵盖了Google OAuth凭据的使用,你可以根据需要使用其他身份验证提供商的插件和代码来实现相应的功能。
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