Flutter的自由学习之路-Flutter进阶篇实现对业务用户

在Flutter中实现对业务用户的管理，通常涉及到用户的注册、登录、密码重置等功能。以下是一个简化的例子，展示如何使用Flutter实现这些功能：

import 'package:flutter/material.dart';
 
class UserManagementPage extends StatefulWidget {
  @override
  _UserManagementPageState createState() => _UserManagementPageState();
}
 
class _UserManagementPageState extends State<UserManagementPage> {
  final _formKey = GlobalKey<FormState>();
  final _emailController = TextEditingController();
  final _passwordController = TextEditingController();
 
  // 登录函数
  void _login() {
    if (_formKey.currentState.validate()) {
      // 验证成功，执行登录逻辑
      print('登录用户: ${_emailController.text}');
    }
  }
 
  // 注册函数
  void _signUp() {
    // 导航到注册页面
    print('导航到注册页面');
  }
 
  // 重置密码函数
  void _forgotPassword() {
    // 导航到重置密码页面
    print('导航到重置密码页面');
  }
 
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('用户管理'),
      ),
      body: Padding(
        padding: const EdgeInsets.all(16.0),
        child: Form(
          key: _formKey,
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.stretch,
            children: <Widget>[
              TextFormField(
                controller: _emailController,
                decoration: InputDecoration(labelText: '邮箱'),
                validator: (value) {
                  if (value.isEmpty) return '请输入邮箱';
                  if (!value.contains('@')) return '邮箱格式不正确';
                  return null;
                },
              ),
              TextFormField(
                controller: _passwordController,
                decoration: InputDecoration(labelText: '密码'),
                obscureText: true,
                validator: (value) {
                  if (value.isEmpty) return '请输入密码';
                  return null;
                },
              ),
              SizedBox(height: 16.0),
              Row(
                mainAxisAlignment: MainAxisAlignment.spaceBetween,
                children: <Widget>[
                  RaisedButton(
                    child: Text('登录'),
                    onPressed: _login,
                  ),
                  RaisedButton(
                    child: Text('注册'),
                    onPressed: _signUp,
                  ),
                ],
              ),
              FlatButton(
                child: Text('忘记密码？'),