Flutter认证管理插件nhost_auth_dart的使用
Flutter认证管理插件nhost_auth_dart的使用
nhost_auth_dart
是一个用于 Flutter 应用的认证管理插件。通过它可以轻松地实现用户注册、登录等功能。以下是使用该插件的详细步骤。
获取开始
首先,你需要从 Nhost 控制台获取你的子域名和区域信息。
import 'package:nhost_auth_dart/nhost_auth_dart.dart';
void main() async {
// 设置客户端
final auth = NhostAuthClient(url: 'YOUR_SUBDOMAIN.auth.nhost.run');
try {
// 用户通过邮箱和密码进行登录
await auth.signInEmailPassword(
email: 'user-1@nhost.io',
password: 'password-1',
);
// 打印当前用户的部分信息
final currentUser = auth.currentUser;
if (currentUser != null) {
print('currentUser.id: ${currentUser.id}');
print('currentUser.displayName: ${currentUser.displayName}');
print('currentUser.email: ${currentUser.email}');
// 登出
await auth.signOut();
}
} catch (e) {
// 捕获并打印错误信息
print(e);
}
// 释放资源
auth.close();
}
最新发布
在 pubspec.yaml
文件中添加依赖项:
dependencies:
nhost_auth_dart: ^2.0.0
完整示例
以下是一个完整的示例代码,展示了如何使用 nhost_auth_dart
插件完成用户注册、登录和登出操作。
import 'package:flutter/material.dart';
import 'package:nhost_auth_dart/nhost_auth_dart.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
[@override](/user/override)
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(title: Text('Nhost Auth Example')),
body: Center(
child: AuthExample(),
),
),
);
}
}
class AuthExample extends StatefulWidget {
[@override](/user/override)
_AuthExampleState createState() => _AuthExampleState();
}
class _AuthExampleState extends State<AuthExample> {
final TextEditingController _emailController = TextEditingController();
final TextEditingController _passwordController = TextEditingController();
bool _isSignedIn = false;
Future<void> _signIn() async {
final auth = NhostAuthClient(url: 'YOUR_SUBDOMAIN.auth.nhost.run');
try {
await auth.signInEmailPassword(
email: _emailController.text,
password: _passwordController.text,
);
final currentUser = auth.currentUser;
if (currentUser != null) {
setState(() {
_isSignedIn = true;
});
}
} catch (e) {
print(e);
}
}
Future<void> _signOut() async {
final auth = NhostAuthClient(url: 'YOUR_SUBDOMAIN.auth.nhost.run');
try {
await auth.signOut();
setState(() {
_isSignedIn = false;
});
} catch (e) {
print(e);
}
}
[@override](/user/override)
Widget build(BuildContext context) {
return Padding(
padding: const EdgeInsets.all(16.0),
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
TextField(
controller: _emailController,
decoration: InputDecoration(labelText: 'Email'),
),
TextField(
controller: _passwordController,
obscureText: true,
decoration: InputDecoration(labelText: 'Password'),
),
SizedBox(height: 16),
ElevatedButton(
onPressed: _signIn,
child: Text('Sign In'),
),
SizedBox(height: 16),
ElevatedButton(
onPressed: _isSignedIn ? _signOut : null,
child: Text('Sign Out'),
),
SizedBox(height: 16),
Text(_isSignedIn ? 'Signed In' : 'Not Signed In')
],
),
);
}
}
更多关于Flutter认证管理插件nhost_auth_dart的使用的实战系列教程也可以访问 https://www.itying.com/category-92-b0.html
更多关于Flutter认证管理插件nhost_auth_dart的使用的实战系列教程也可以访问 https://www.itying.com/category-92-b0.html
当然,下面是一个关于如何使用Flutter认证管理插件nhost_auth_dart
的示例代码。nhost_auth_dart
是一个用于Flutter应用的认证插件,它允许你轻松集成Nhost认证服务。以下是一个基本的示例,展示了如何使用这个插件进行用户注册、登录和注销。
首先,确保你已经在你的pubspec.yaml
文件中添加了nhost_auth_dart
依赖:
dependencies:
flutter:
sdk: flutter
nhost_auth_dart: ^最新版本号
然后,运行flutter pub get
来安装依赖。
接下来,在你的Flutter项目中,你可以按照以下步骤使用nhost_auth_dart
插件:
- 初始化Nhost客户端:
在你的main.dart
或任何其他合适的位置初始化Nhost客户端。
import 'package:flutter/material.dart';
import 'package:nhost_auth_dart/nhost_auth_dart.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
// 初始化Nhost客户端
final nhostClient = NhostClient(
backendUrl: 'https://你的Nhost后端URL', // 替换为你的Nhost后端URL
);
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: AuthScreen(nhostClient: nhostClient),
);
}
}
- 创建认证屏幕:
在你的项目中创建一个新的Dart文件,比如auth_screen.dart
,并在其中定义你的认证逻辑。
import 'package:flutter/material.dart';
import 'package:nhost_auth_dart/nhost_auth_dart.dart';
class AuthScreen extends StatefulWidget {
final NhostClient nhostClient;
AuthScreen({required this.nhostClient});
@override
_AuthScreenState createState() => _AuthScreenState();
}
class _AuthScreenState extends State<AuthScreen> {
final _formKey = GlobalKey<FormState>();
String? email;
String? password;
String? errorMessage;
void _register() async {
try {
await widget.nhostClient.auth.register(email: email!, password: password!);
setState(() {
errorMessage = null;
});
// 用户注册成功后,可以跳转到其他页面或显示成功信息
print('User registered successfully');
} catch (e) {
setState(() {
errorMessage = e.toString();
});
}
}
void _login() async {
try {
await widget.nhostClient.auth.login(email: email!, password: password!);
setState(() {
errorMessage = null;
});
// 用户登录成功后,可以跳转到其他页面或显示成功信息
print('User logged in successfully');
} catch (e) {
setState(() {
errorMessage = e.toString();
});
}
}
void _logout() async {
try {
await widget.nhostClient.auth.logout();
// 用户注销成功后,可以更新UI或显示注销成功信息
print('User logged out successfully');
} catch (e) {
print(e.toString());
}
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Auth Screen'),
),
body: Padding(
padding: const EdgeInsets.all(16.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Form(
key: _formKey,
child: Column(
children: [
TextFormField(
decoration: InputDecoration(labelText: 'Email'),
onSaved: (value) => email = value,
),
TextFormField(
decoration: InputDecoration(labelText: 'Password'),
obscureText: true,
onSaved: (value) => password = value,
),
],
),
),
SizedBox(height: 16),
ElevatedButton(
onPressed: _register,
child: Text('Register'),
),
SizedBox(height: 8),
ElevatedButton(
onPressed: _login,
child: Text('Login'),
),
if (widget.nhostClient.auth.isAuthenticated) {
SizedBox(height: 16),
ElevatedButton(
onPressed: _logout,
child: Text('Logout'),
),
}
],
),
),
if (errorMessage != null) {
bottomSheet: BottomSheet(
onClosing: () => setState(() => errorMessage = null),
builder: (context) => Padding(
padding: EdgeInsets.all(16),
child: Text(errorMessage!, style: TextStyle(color: Colors.red)),
),
),
},
);
}
}
这个示例展示了如何使用nhost_auth_dart
插件进行用户注册、登录和注销的基本流程。在实际应用中,你可能需要根据自己的需求进一步定制和扩展这个示例。