Flutter身份验证插件fteam_authentication_firebase的使用

Flutter身份验证插件fteam_authentication_firebase的使用

安装

在你的 pubspec.yaml 文件中添加以下依赖:

dependencies:
  fteam_authentication_firebase:

使用

要使用 fteam_authentication_firebase 插件,你需要配置一些必要的依赖项,包括 firebase_core, firebase_auth, google_sign_in, flutter_facebook_authsign_in_with_apple。这些库需要先进行配置。

import 'package:flutter/material.dart';
import 'package:fteam_authentication_firebase/fteam_authentication_firebase.dart';

void main() {
  WidgetsFlutterBinding.ensureInitialized();

  // 配置iOS身份验证用户
  startFirebaseDatasource(
    ProviderOptions(
      appleClientId: 'br.com.example',
      appleRedirectUri: Uri.parse('https://exemplo.com'),
    ),
    firebaseOptions: const FirebaseOption(
      appId: 'your appId',
      apiKey: 'your apiKey',
      projectId: 'your projectId',
      messagingSenderId: 'your messagingSenderId',
    ),
  );

  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: const AuthPage(),
    );
  }
}

class AuthPage extends StatefulWidget {
  const AuthPage({Key? key}) : super(key: key);

  [@override](/user/override)
  _AuthPageState createState() => _AuthPageState();
}

class _AuthPageState extends State<AuthPage> {
  var store = Store();

  [@override](/user/override)
  Widget build(BuildContext context) {
    return Scaffold(
      body: Center(
        child: Padding(
          padding: const EdgeInsets.all(16),
          child: Wrap(
            alignment: WrapAlignment.center,
            runSpacing: 16,
            children: [
              const Padding(
                padding: EdgeInsets.all(16),
                child: FlutterLogo(
                  size: 60,
                ),
              ),
              const TextField(
                decoration: InputDecoration(label: Text('E-mail'), border: OutlineInputBorder()),
              ),
              const TextField(
                decoration: InputDecoration(label: Text('Password'), border: OutlineInputBorder()),
              ),
              Row(
                children: [
                  Expanded(
                    child: ElevatedButton(
                      onPressed: () {},
                      child: const Text('Login'),
                    ),
                  ),
                ],
              ),
              const SizedBox(
                height: 50,
              ),
              Row(
                mainAxisAlignment: MainAxisAlignment.spaceAround,
                children: [
                  ElevatedButton(
                    style: ElevatedButton.styleFrom(primary: Colors.red),
                    onPressed: () {
                      store.signInGoogle();
                    },
                    child: const Text('Login Google'),
                  ),
                  ElevatedButton(
                    onPressed: () {
                      store.signInFacebook();
                    },
                    child: const Text('Login Facebook'),
                  ),
                  ElevatedButton(
                    style: ElevatedButton.styleFrom(primary: Colors.black),
                    onPressed: () {
                      store.signInApple();
                    },
                    child: const Text('Login Apple'),
                  ),
                ],
              )
            ],
          ),
        ),
      ),
    );
  }
}

class Store extends ValueNotifier<bool> {
  Store() : super(false);

  Future<bool> save(String email, String password) async {
    return true;
  }

  Future<void> signInGoogle() async {
    final result = await FTeamAuth.login(ProviderLogin.google);
    result.fold(
      (l) {
        debugPrint(l.toString());
      },
      (r) {
        if (r == null) {
          debugPrint('Fail to login');
          return null;
        }
        debugPrint(r.token);
        return r.email;
      },
    );
  }

  Future<void> signInFacebook() async {
    final result = await FTeamAuth.login(ProviderLogin.facebook);
    result.fold(
      (l) {
        debugPrint(l.toString());
      },
      (r) {
        return r?.email;
      },
    );
  }

  Future<void> signInApple() async {
    final result = await FTeamAuth.login(ProviderLogin.appleId);
    result.fold(
      (l) {
        debugPrint(l.toString());
      },
      (r) {
        return r?.email;
      },
    );
  }
}

class User {
  final String email;
  final String password;

  User(this.email, this.password);
}

更多关于Flutter身份验证插件fteam_authentication_firebase的使用的实战教程也可以访问 https://www.itying.com/category-92-b0.html

1 回复

更多关于Flutter身份验证插件fteam_authentication_firebase的使用的实战系列教程也可以访问 https://www.itying.com/category-92-b0.html


fteam_authentication_firebase 是一个用于 Flutter 的 Firebase 身份验证插件,它简化了与 Firebase Authentication 的集成,提供了便捷的方法来处理用户注册、登录、注销等操作。以下是如何使用 fteam_authentication_firebase 插件的基本步骤:

1. 添加依赖

首先,你需要在 pubspec.yaml 文件中添加 fteam_authentication_firebase 插件的依赖:

dependencies:
  flutter:
    sdk: flutter
  fteam_authentication_firebase: ^1.0.0  # 请使用最新版本

然后运行 flutter pub get 来获取依赖。

2. 配置 Firebase

在 Flutter 项目中使用 Firebase 之前,你需要先在 Firebase 控制台中创建一个项目,并按照以下步骤进行配置:

  1. Firebase 控制台 中创建一个新项目。

  2. 点击 “添加应用”,选择 Flutter,然后按照指示添加 Android 和 iOS 应用。

  3. 下载 google-services.json(用于 Android)和 GoogleService-Info.plist(用于 iOS)文件,并将它们分别放置在你的 Flutter 项目的 android/appios/Runner 目录中。

  4. android/build.gradle 文件中添加以下内容:

    classpath 'com.google.gms:google-services:4.3.10'  // 请使用最新版本
    
  5. android/app/build.gradle 文件的末尾添加:

    apply plugin: 'com.google.gms.google-services'
    
  6. 对于 iOS,确保在 ios/Runner/Info.plist 中添加了 Firebase 配置。

3. 初始化 Firebase

在你的 Flutter 应用程序中初始化 Firebase。通常,你可以在 main.dart 文件中进行初始化:

import 'package:firebase_core/firebase_core.dart';
import 'package:flutter/material.dart';

void main() async {
  WidgetsFlutterBinding.ensureInitialized();
  await Firebase.initializeApp();
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: AuthenticationScreen(),
    );
  }
}

4. 使用 fteam_authentication_firebase 插件

在你的应用程序中使用 fteam_authentication_firebase 插件进行身份验证操作。以下是一些常见的操作示例:

用户注册

import 'package:fteam_authentication_firebase/fteam_authentication_firebase.dart';

Future<void> registerUser(String email, String password) async {
  try {
    final user = await FteamAuthenticationFirebase.instance.registerWithEmailAndPassword(email, password);
    print('User registered: ${user.uid}');
  } catch (e) {
    print('Error during registration: $e');
  }
}

用户登录

Future<void> loginUser(String email, String password) async {
  try {
    final user = await FteamAuthenticationFirebase.instance.signInWithEmailAndPassword(email, password);
    print('User logged in: ${user.uid}');
  } catch (e) {
    print('Error during login: $e');
  }
}

用户注销

Future<void> logoutUser() async {
  try {
    await FteamAuthenticationFirebase.instance.signOut();
    print('User logged out');
  } catch (e) {
    print('Error during logout: $e');
  }
}

检查用户是否已登录

Future<void> checkUserStatus() async {
  final user = await FteamAuthenticationFirebase.instance.getCurrentUser();
  if (user != null) {
    print('User is logged in: ${user.uid}');
  } else {
    print('No user is logged in');
  }
}

5. 处理错误

在身份验证过程中,可能会遇到各种错误(例如,无效的电子邮件、弱密码等)。你可以通过捕获异常来处理这些错误,并根据情况向用户显示适当的错误消息。

6. 监听身份验证状态变化

你还可以监听用户的身份验证状态变化,以便在用户登录或注销时更新 UI:

import 'package:fteam_authentication_firebase/fteam_authentication_firebase.dart';

class AuthenticationScreen extends StatefulWidget {
  [@override](/user/override)
  _AuthenticationScreenState createState() => _AuthenticationScreenState();
}

class _AuthenticationScreenState extends State<AuthenticationScreen> {
  StreamSubscription? _authSubscription;

  [@override](/user/override)
  void initState() {
    super.initState();
    _authSubscription = FteamAuthenticationFirebase.instance.authStateChanges.listen((user) {
      if (user != null) {
        print('User is logged in: ${user.uid}');
      } else {
        print('No user is logged in');
      }
    });
  }

  [@override](/user/override)
  void dispose() {
    _authSubscription?.cancel();
    super.dispose();
  }

  [@override](/user/override)
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Authentication'),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            ElevatedButton(
              onPressed: () => registerUser('user@example.com', 'password123'),
              child: Text('Register'),
            ),
            ElevatedButton(
              onPressed: () => loginUser('user@example.com', 'password123'),
              child: Text('Login'),
            ),
            ElevatedButton(
              onPressed: logoutUser,
              child: Text('Logout'),
            ),
          ],
        ),
      ),
    );
  }
}
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