382 lines
11 KiB
Dart
382 lines
11 KiB
Dart
/// 时间: 2026-04-09
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/// 功能: 公告信息页面
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/// 介绍: 显示系统公告列表，支持下拉刷新
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/// 最新变化: 添加底部"到底了"提示，防止被底部 tabs 遮住
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import 'dart:convert';
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import 'package:flutter/cupertino.dart';
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import 'package:flutter/material.dart';
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import 'package:get/get.dart';
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import '../../../utils/http/http_client.dart';
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import '../../../constants/app_constants.dart';
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import '../../../config/app_config.dart';
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import '../../../services/get/theme_controller.dart';
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/// 公告数据模型
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class NoticeItem {
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final String id;
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final String content;
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final String? author;
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final String createTime;
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final String updateTime;
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NoticeItem({
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required this.id,
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required this.content,
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this.author,
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required this.createTime,
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required this.updateTime,
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});
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factory NoticeItem.fromJson(Map<String, dynamic> json) {
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return NoticeItem(
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id: json['id'] as String? ?? '',
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content: json['content'] as String? ?? '',
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author: json['author'] as String?,
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createTime: json['create_time'] as String? ?? '',
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updateTime: json['update_time'] as String? ?? '',
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);
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}
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}
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class NoticePage extends StatefulWidget {
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const NoticePage({super.key, this.showAppBar = true});
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final bool showAppBar;
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@override
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State<NoticePage> createState() => _NoticePageState();
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}
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class _NoticePageState extends State<NoticePage> {
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List<NoticeItem> _noticeList = [];
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bool _isLoading = false;
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bool _hasError = false;
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String _errorMessage = '';
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final ThemeController _themeController = Get.find<ThemeController>();
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@override
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void initState() {
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super.initState();
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_loadNotices();
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}
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Future<void> _loadNotices() async {
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if (_isLoading) return;
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setState(() {
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_isLoading = true;
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_hasError = false;
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_errorMessage = '';
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});
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try {
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final response = await HttpClient.get('app/notice_api.php');
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if (response.isSuccess) {
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final jsonData = response.jsonData;
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if (jsonData['code'] == 0) {
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final data = jsonData['data'];
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if (data != null && data['list'] != null) {
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final list = data['list'] as List;
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if (mounted) {
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setState(() {
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_noticeList = list
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.map(
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(item) =>
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NoticeItem.fromJson(item as Map<String, dynamic>),
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)
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.toList();
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_isLoading = false;
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});
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}
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} else {
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if (mounted) {
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setState(() {
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_noticeList = [];
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_isLoading = false;
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});
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}
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}
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} else {
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throw Exception(jsonData['msg'] ?? '获取公告失败');
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}
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} else {
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throw Exception('网络请求失败');
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}
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} catch (e) {
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if (mounted) {
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setState(() {
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_hasError = true;
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_errorMessage = e.toString();
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_isLoading = false;
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});
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}
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}
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}
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@override
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Widget build(BuildContext context) {
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return Obx(() {
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final isDark = _themeController.isDarkMode;
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final themeColor = _themeController.currentThemeColor;
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if (widget.showAppBar) {
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return CupertinoPageScaffold(
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navigationBar: CupertinoNavigationBar(
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backgroundColor: isDark ? const Color(0xFF2A2A2A) : themeColor,
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middle: Text(
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'公告',
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style: TextStyle(
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color: Colors.white,
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fontSize: 17,
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fontWeight: FontWeight.w600,
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),
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),
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leading: CupertinoButton(
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padding: EdgeInsets.zero,
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onPressed: () => Navigator.of(context).pop(),
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child: Icon(CupertinoIcons.back, color: Colors.white, size: 24),
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),
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),
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child: _buildBody(isDark, themeColor),
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);
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} else {
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return _buildBody(isDark, themeColor);
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}
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});
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}
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Widget _buildBody(bool isDark, Color themeColor) {
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if (_isLoading) {
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return Center(
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child: CupertinoActivityIndicator(
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color: isDark ? Colors.white : themeColor,
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),
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);
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}
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if (_hasError) {
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return Center(
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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Icon(
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CupertinoIcons.exclamationmark_circle,
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size: 64,
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color: isDark ? Colors.red[300] : AppConstants.errorColor,
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),
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const SizedBox(height: 16),
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Text(
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_errorMessage,
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style: TextStyle(
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fontSize: 16,
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color: isDark ? Colors.red[300] : AppConstants.errorColor,
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),
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textAlign: TextAlign.center,
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),
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const SizedBox(height: 16),
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CupertinoButton.filled(
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onPressed: _loadNotices,
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child: const Text('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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if (_noticeList.isEmpty) {
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return Center(
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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Icon(
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CupertinoIcons.bell_slash,
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size: 64,
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color: isDark ? Colors.grey[600] : Colors.grey[400],
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),
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const SizedBox(height: 16),
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Text(
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'暂无公告',
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style: TextStyle(
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fontSize: 16,
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color: isDark ? Colors.grey[400] : Colors.grey[600],
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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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return RefreshIndicator(
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onRefresh: _loadNotices,
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color: themeColor,
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child: ListView.builder(
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padding: EdgeInsets.fromLTRB(
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16,
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16,
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16,
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AppConfig.liquidGlassTotalHeight + 16,
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),
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itemCount: _noticeList.length + 1,
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itemBuilder: (context, index) {
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if (index == _noticeList.length) {
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return _buildBottomIndicator(isDark);
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}
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return _buildNoticeCard(_noticeList[index], isDark, themeColor);
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},
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),
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);
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}
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Widget _buildBottomIndicator(bool isDark) {
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return Container(
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padding: const EdgeInsets.symmetric(vertical: 24),
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child: Row(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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Container(
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width: 40,
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height: 1,
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color: isDark ? Colors.grey[700] : Colors.grey[300],
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),
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Padding(
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padding: const EdgeInsets.symmetric(horizontal: 16),
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child: Text(
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'到底了',
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style: TextStyle(
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fontSize: 12,
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color: isDark ? Colors.grey[500] : Colors.grey[400],
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),
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),
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),
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Container(
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width: 40,
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height: 1,
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color: isDark ? Colors.grey[700] : Colors.grey[300],
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),
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],
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),
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);
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}
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Widget _buildNoticeCard(NoticeItem notice, bool isDark, Color themeColor) {
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return Container(
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margin: const EdgeInsets.only(bottom: 16),
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decoration: BoxDecoration(
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color: isDark ? const Color(0xFF2A2A2A) : Colors.white,
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borderRadius: BorderRadius.circular(12),
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boxShadow: [
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BoxShadow(
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color: isDark
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? Colors.black.withValues(alpha: 0.2)
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: Colors.black.withValues(alpha: 0.05),
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blurRadius: 8,
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offset: const Offset(0, 2),
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),
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],
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border: Border.all(color: themeColor.withValues(alpha: 0.2), width: 1),
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),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Container(
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padding: const EdgeInsets.all(12),
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decoration: BoxDecoration(
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color: themeColor.withValues(alpha: 0.1),
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borderRadius: const BorderRadius.only(
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topLeft: Radius.circular(12),
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topRight: Radius.circular(12),
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),
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),
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child: Row(
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children: [
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Icon(CupertinoIcons.bell, color: themeColor, size: 20),
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const SizedBox(width: 8),
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Expanded(
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child: Text(
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'公告 #${notice.id}',
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style: TextStyle(
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fontSize: 15,
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fontWeight: FontWeight.w600,
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color: themeColor,
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),
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),
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),
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if (notice.author != null && notice.author!.isNotEmpty) ...[
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Icon(
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CupertinoIcons.person,
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color: themeColor.withValues(alpha: 0.7),
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size: 16,
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),
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const SizedBox(width: 4),
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Text(
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notice.author!,
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style: TextStyle(
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fontSize: 12,
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color: themeColor.withValues(alpha: 0.7),
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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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Padding(
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padding: const EdgeInsets.all(16),
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child: Text(
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notice.content,
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style: TextStyle(
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fontSize: 15,
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color: isDark ? Colors.white : Colors.black87,
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height: 1.6,
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),
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),
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),
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Padding(
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padding: const EdgeInsets.fromLTRB(16, 0, 16, 12),
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child: Row(
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children: [
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Icon(
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CupertinoIcons.clock,
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size: 14,
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color: isDark ? Colors.grey[400] : Colors.grey[500],
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),
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const SizedBox(width: 6),
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Text(
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'创建时间: ${notice.createTime}',
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style: TextStyle(
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fontSize: 12,
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color: isDark ? Colors.grey[400] : Colors.grey[500],
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),
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),
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],
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),
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),
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if (notice.updateTime != notice.createTime)
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Padding(
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padding: const EdgeInsets.fromLTRB(16, 0, 16, 12),
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child: Row(
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children: [
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Icon(
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CupertinoIcons.refresh,
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size: 14,
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color: isDark ? Colors.grey[400] : Colors.grey[500],
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),
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const SizedBox(width: 6),
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Text(
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'更新时间: ${notice.updateTime}',
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style: TextStyle(
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fontSize: 12,
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color: isDark ? Colors.grey[400] : Colors.grey[500],
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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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