287 lines
9.7 KiB
Dart
287 lines
9.7 KiB
Dart
// ignore_for_file: use_build_context_synchronously
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import 'package:flutter/material.dart';
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import 'main_tab.dart';
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void main() => runApp(const MyApp());
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class MyApp extends StatelessWidget {
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const MyApp({super.key});
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@override
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Widget build(BuildContext context) {
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return MaterialApp(
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title: '登录页面',
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theme: ThemeData(
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primarySwatch: Colors.blue,
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inputDecorationTheme: const InputDecorationTheme(
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border: InputBorder.none,
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contentPadding: EdgeInsets.symmetric(horizontal: 8),
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),
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),
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home: const LoginPage(),
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debugShowCheckedModeBanner: false,
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);
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}
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}
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class LoginPage extends StatefulWidget {
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const LoginPage({super.key});
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@override
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// ignore: library_private_types_in_public_api
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_LoginPageState createState() => _LoginPageState();
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}
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class _LoginPageState extends State<LoginPage> {
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final TextEditingController _phoneController = TextEditingController();
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final TextEditingController _passwordController = TextEditingController();
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final GlobalKey<FormState> _formKey = GlobalKey<FormState>();
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String _errorMessage = '';
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bool _isLoading = false;
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bool _obscurePassword = true;
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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backgroundColor: Colors.white,
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body: SingleChildScrollView(
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child: Column(
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children: [
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_buildHeader(),
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Transform.translate(
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offset: const Offset(0, -20),
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child: Container(
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decoration: const BoxDecoration(
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color: Colors.white,
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borderRadius: BorderRadius.only(
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topLeft: Radius.circular(30),
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topRight: Radius.circular(30),
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),
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),
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child: Padding(
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padding: const EdgeInsets.only(top: 30),
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child: Column(
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children: [
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// 手机号
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_buildInputSection(
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label: "手机号码",
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controller: _phoneController,
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hintText: "请输入手机号...",
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keyboardType: TextInputType.phone,
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validator: (value) {
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if (value == null || value.isEmpty) {
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return '请输入手机号';
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}
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if (!RegExp(r'^1[3-9]\d{9}$').hasMatch(value)) {
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return '请输入有效的手机号';
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}
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return null;
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},
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),
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Padding(padding: const EdgeInsets.symmetric(horizontal: 25),
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child: const Divider(height: 1, thickness: 1),
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),
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// 密码
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_buildInputSection(
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label: "密码",
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controller: _passwordController,
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hintText: "请输入密码...",
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obscureText: _obscurePassword,
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suffixIcon: IconButton(
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icon: Icon(
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_obscurePassword
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? Icons.visibility
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: Icons.visibility_off,
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color: Colors.grey,
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),
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onPressed: () {
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setState(() {
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_obscurePassword = !_obscurePassword;
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});
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},
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),
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validator: (value) {
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if (value == null || value.isEmpty) {
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return '请输入密码';
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}
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if (value.length < 6) {
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return '密码长度至少6位';
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}
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return null;
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},
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),
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Padding(padding: const EdgeInsets.symmetric(horizontal: 25),
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child: const Divider(height: 1, thickness: 1),
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),
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// 登录按钮
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Padding(
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padding: const EdgeInsets.symmetric(
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horizontal: 25, vertical: 24),
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child: SizedBox(
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width: double.infinity,
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height: 48,
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child: ElevatedButton(
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onPressed: _isLoading ? null : _handleLogin,
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style: ElevatedButton.styleFrom(
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backgroundColor: Colors.blue,
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shape: RoundedRectangleBorder(
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borderRadius: BorderRadius.circular(8),
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),
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),
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child: _isLoading
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? const CircularProgressIndicator(
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color: Colors.white,
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)
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: const Text(
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'登录',
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style: TextStyle(
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fontSize: 18,
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color: Colors.white,
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fontWeight: FontWeight.bold,
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),
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),
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),
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),
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),
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Padding(padding: const EdgeInsets.only(left: 30, right: 30),
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child:Text(" 本平台为互联网非涉密平台，严禁处理、传输国家秘密和工作秘密",
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style: TextStyle(color: Colors.red))
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)
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],
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),
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),
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),
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),
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],
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),
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),
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);
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}
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// 顶部图片和文字
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Widget _buildHeader() {
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return Stack(
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alignment: Alignment.center,
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children: [
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Image.asset(
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'assets/images/login-bg.png',
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width: double.infinity,
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fit: BoxFit.fitWidth,
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),
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Positioned(
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bottom: 40,
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left: 30,
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child: Column(
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children: [
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const Text(
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'欢迎登录',
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style: TextStyle(
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fontSize: 28,
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fontWeight: FontWeight.bold,
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color: Colors.white,
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shadows: [
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Shadow(
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blurRadius: 10,
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color: Colors.black45,
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offset: Offset(2, 2),
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),
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],
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),
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),
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const SizedBox(height: 8),
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Text(
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'秦皇岛市应急管局\n数智应急管理平台',
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style: TextStyle(fontSize: 18, color: Colors.white),
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),
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],
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),
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),
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],
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);
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}
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// 输入区域组件
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Widget _buildInputSection({
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required String label,
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required TextEditingController controller,
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required String hintText,
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bool obscureText = false,
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TextInputType keyboardType = TextInputType.text,
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Widget? suffixIcon,
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String? Function(String?)? validator,
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}) {
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return Padding(
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padding: const EdgeInsets.symmetric(horizontal: 25, vertical: 12),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Text(
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label,
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style: const TextStyle(
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fontSize: 20,
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fontWeight: FontWeight.w500,
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color: Colors.black87,
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),
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),
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const SizedBox(height: 15),
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TextFormField(
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controller: controller,
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obscureText: obscureText,
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keyboardType: keyboardType,
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validator: validator,
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// 关键属性：让文字在行内垂直居中
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textAlignVertical: TextAlignVertical.center,
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decoration: InputDecoration(
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hintText: hintText,
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suffixIcon: suffixIcon,
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// 去掉默认的上下/左右 padding，让文字贴紧外层的 25 左边距
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isDense: true,
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contentPadding: EdgeInsets.zero,
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),
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),
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],
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),
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);
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}
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// 登录处理
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void _handleLogin() {
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// 清除之前的错误信息
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setState(() => _errorMessage = '');
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Navigator.pushReplacement(
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context,
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MaterialPageRoute(builder: (context) => const MainPage()),
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);
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// if (_formKey.currentState?.validate() ?? false) {
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// setState(() => _isLoading = true);
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//
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// // 模拟登录请求
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// Future.delayed(const Duration(seconds: 2), () {
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// setState(() => _isLoading = false);
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// // 登录成功，跳转到主页
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// // Navigator.pushReplacement(
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// // context,
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// // MaterialPageRoute(builder: (context) => const MainPage()),
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// // );
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// // 模拟登录逻辑
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// if (_phoneController.text == "13800138000" &&
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// _passwordController.text == "123456") {
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// // 登录成功，跳转到主页
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// Navigator.pushReplacement(
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// context,
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// MaterialPageRoute(builder: (context) => const MainPage()),
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// );
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// } else {
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// // 登录失败，显示错误信息
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// setState(() {
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// _errorMessage = '手机号或密码错误，请重试';
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// });
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// }
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// });
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// }
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}
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}
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