253 lines
9.5 KiB
Dart
253 lines
9.5 KiB
Dart
import 'package:flutter/material.dart';
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import '../models/activity.dart';
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import '../services/activity_service.dart';
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import '../utils/constants.dart';
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import 'activity_detail_screen.dart';
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import 'create_activity_screen.dart';
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class HomeScreen extends StatefulWidget {
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const HomeScreen({super.key});
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@override
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State<HomeScreen> createState() => _HomeScreenState();
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}
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class _HomeScreenState extends State<HomeScreen> {
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String _selectedCategory = '全部';
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String _timeFilter = '全部';
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List<Activity> _activities = [];
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bool _loading = true;
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@override
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void initState() {
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super.initState();
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_loadActivities();
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}
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void _loadActivities() {
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setState(() {
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_activities = ActivityService.getMockActivities();
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_loading = false;
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});
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}
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List<Activity> get _filteredActivities {
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return _activities.where((a) {
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if (_selectedCategory != '全部' && a.category != _selectedCategory) return false;
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if (_timeFilter == '今天') {
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return DateUtils.isSameDay(a.time, DateTime.now());
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}
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if (_timeFilter == '明天') {
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final tomorrow = DateTime.now().add(const Duration(days: 1));
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return DateUtils.isSameDay(a.time, tomorrow);
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}
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return true;
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}).toList();
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}
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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appBar: AppBar(
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title: Row(
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mainAxisSize: MainAxisSize.min,
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children: [
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const Icon(Icons.location_on, size: 18, color: Color(0xFF1976D2)),
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const SizedBox(width: 4),
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const Text('成都', style: TextStyle(fontSize: 16, color: Color(0xFF666666))),
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const SizedBox(width: 16),
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Expanded(
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child: Container(
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height: 36,
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decoration: BoxDecoration(
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color: const Color(0xFFF5F5F5),
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borderRadius: BorderRadius.circular(18),
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),
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child: const Row(
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children: [
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SizedBox(width: 12),
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Icon(Icons.search, size: 20, color: Color(0xFF999999)),
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SizedBox(width: 8),
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Text('搜索活动', style: TextStyle(fontSize: 14, color: Color(0xFF999999))),
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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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body: _loading
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? const Center(child: CircularProgressIndicator())
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: RefreshIndicator(
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onRefresh: () async => _loadActivities(),
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child: CustomScrollView(
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slivers: [
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// Category chips
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SliverToBoxAdapter(
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child: SizedBox(
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height: 48,
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child: ListView(
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scrollDirection: Axis.horizontal,
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padding: const EdgeInsets.symmetric(horizontal: 16),
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children: AppConstants.activityCategories.map((cat) {
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final selected = _selectedCategory == cat;
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return Padding(
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padding: const EdgeInsets.only(right: 8),
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child: ChoiceChip(
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label: Text(cat, style: TextStyle(fontSize: 14, color: selected ? Colors.white : const Color(0xFF666666))),
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selected: selected,
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selectedColor: const Color(0xFF1976D2),
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backgroundColor: const Color(0xFFF5F5F5),
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onSelected: (_) => setState(() => _selectedCategory = cat),
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),
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);
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}).toList(),
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),
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),
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),
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// Time filter
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SliverToBoxAdapter(
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child: Padding(
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padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
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child: Row(
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children: ['全部', '今天', '明天', '本周'].map((t) {
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final selected = _timeFilter == t;
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return Padding(
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padding: const EdgeInsets.only(right: 12),
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child: GestureDetector(
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onTap: () => setState(() => _timeFilter = t),
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child: Text(t, style: TextStyle(
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fontSize: 16,
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color: selected ? const Color(0xFF1976D2) : const Color(0xFF999999),
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fontWeight: selected ? FontWeight.w600 : FontWeight.normal,
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)),
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),
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);
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}).toList(),
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),
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),
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),
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// Activity list
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SliverList(
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delegate: SliverChildBuilderDelegate(
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(ctx, i) => _ActivityCard(
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key: ValueKey(_filteredActivities[i].id),
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activity: _filteredActivities[i],
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onTap: () => Navigator.push(context, MaterialPageRoute(
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builder: (_) => ActivityDetailScreen(activity: _filteredActivities[i]),
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)),
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),
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childCount: _filteredActivities.length,
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),
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),
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const SliverToBoxAdapter(child: SizedBox(height: 80)),
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],
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),
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),
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floatingActionButton: FloatingActionButton.extended(
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onPressed: () => Navigator.push(context, MaterialPageRoute(builder: (_) => const CreateActivityScreen())),
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icon: const Icon(Icons.add),
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label: const Text('发起活动', style: TextStyle(fontSize: 16)),
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backgroundColor: const Color(0xFF1976D2),
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foregroundColor: Colors.white,
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),
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);
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}
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}
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class _ActivityCard extends StatefulWidget {
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final Activity activity;
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final VoidCallback onTap;
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const _ActivityCard({super.key, required this.activity, required this.onTap});
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@override
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State<_ActivityCard> createState() => _ActivityCardState();
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}
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class _ActivityCardState extends State<_ActivityCard> {
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bool _isJoined = false;
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String _categoryEmoji(String cat) {
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const map = {'太极':'🧘','茶话会':'🍵','书法':'✍️','摄影':'📷','舞蹈':'💃','户外徒步':'🥾','手工':'🎨','唱歌':'🎵','棋牌':'♟️','读书':'📚','晨练':'🏃'};
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return map[cat] ?? '🎯';
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}
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void _joinActivity() {
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setState(() {
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_isJoined = true;
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});
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ScaffoldMessenger.of(context).showSnackBar(
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const SnackBar(content: Text('报名成功！')),
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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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final activity = widget.activity;
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final canJoin = !activity.isFull && !_isJoined;
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final buttonText = _isJoined
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? '已报名'
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: (activity.isFull ? '已满员' : '报名');
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return Card(
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margin: const EdgeInsets.symmetric(horizontal: 16, vertical: 6),
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child: InkWell(
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onTap: widget.onTap,
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borderRadius: BorderRadius.circular(16),
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child: Padding(
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padding: const EdgeInsets.all(16),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Row(
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children: [
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Text(_categoryEmoji(activity.category), style: const TextStyle(fontSize: 24)),
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const SizedBox(width: 8),
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Expanded(child: Text(activity.title, style: const TextStyle(fontSize: 18, fontWeight: FontWeight.w600), maxLines: 1, overflow: TextOverflow.ellipsis)),
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],
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),
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const SizedBox(height: 12),
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Row(
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children: [
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const Icon(Icons.access_time, size: 16, color: Color(0xFF999999)),
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const SizedBox(width: 4),
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Text(activity.timeDisplay, style: const TextStyle(fontSize: 16, color: Color(0xFF666666))),
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const SizedBox(width: 16),
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const Icon(Icons.location_on_outlined, size: 16, color: Color(0xFF999999)),
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const SizedBox(width: 4),
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Text(activity.distance != null ? '距你${activity.distance}km' : '', style: const TextStyle(fontSize: 16, color: Color(0xFF666666))),
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],
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),
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const SizedBox(height: 12),
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Row(
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children: [
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Expanded(
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child: Text(
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'已报名 ${activity.currentParticipants}/${activity.maxParticipants}人',
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style: TextStyle(
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fontSize: 16,
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color: activity.isFull ? const Color(0xFFF44336) : const Color(0xFF4CAF50),
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fontWeight: FontWeight.w500,
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),
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),
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),
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SizedBox(
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height: 40,
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child: ElevatedButton(
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onPressed: canJoin ? _joinActivity : null,
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style: ElevatedButton.styleFrom(
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minimumSize: const Size(80, 40),
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padding: const EdgeInsets.symmetric(horizontal: 20),
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),
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child: Text(buttonText, style: const TextStyle(fontSize: 16)),
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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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