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ytc1012
290
lib/screens/category_management_screen.dart
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290
lib/screens/category_management_screen.dart
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import 'package:flutter/material.dart';
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import 'package:flutter_riverpod/flutter_riverpod.dart';
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import '../theme/app_theme.dart';
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import '../services/category_service.dart';
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import '../database/app_usage_dao.dart';
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import '../widgets/empty_state_widget.dart';
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import '../widgets/error_state_widget.dart';
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class CategoryManagementScreen extends ConsumerStatefulWidget {
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const CategoryManagementScreen({super.key});
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@override
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ConsumerState<CategoryManagementScreen> createState() => _CategoryManagementScreenState();
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}
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class _CategoryManagementScreenState extends ConsumerState<CategoryManagementScreen> {
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final CategoryService _categoryService = CategoryService();
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final AppUsageDao _appUsageDao = AppUsageDao();
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final TextEditingController _searchController = TextEditingController();
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String _searchQuery = '';
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// 可用分类列表
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final List<String> _availableCategories = ['work', 'study', 'entertainment', 'social', 'tool', 'other'];
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@override
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void dispose() {
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_searchController.dispose();
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super.dispose();
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}
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Future<List<AppCategoryItem>> _loadAppCategories() async {
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// 获取所有应用使用记录（最近使用的）
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// 如果数据库为空，返回空列表（Web 平台会返回空列表）
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final now = DateTime.now();
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final startOfWeek = now.subtract(const Duration(days: 7));
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final appUsages = await _appUsageDao.getAppUsages(
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startTime: startOfWeek,
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endTime: now,
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);
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// 如果没有数据，返回空列表
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if (appUsages.isEmpty) {
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return [];
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}
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// 获取自定义分类
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final customCategories = await _categoryService.getAllCustomCategories();
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// 去重并创建列表
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final packageMap = <String, AppCategoryItem>{};
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for (final usage in appUsages) {
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if (!packageMap.containsKey(usage.packageName)) {
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final currentCategory = customCategories[usage.packageName] ??
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CategoryService.defaultCategories[usage.packageName] ??
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'other';
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packageMap[usage.packageName] = AppCategoryItem(
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packageName: usage.packageName,
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appName: usage.appName,
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category: currentCategory,
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isCustom: customCategories.containsKey(usage.packageName),
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);
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}
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}
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return packageMap.values.toList()
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..sort((a, b) => a.appName.compareTo(b.appName));
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}
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@override
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Widget build(BuildContext context) {
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final theme = Theme.of(context);
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return Scaffold(
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appBar: AppBar(
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title: const Text('应用分类'),
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),
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body: Column(
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children: [
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// 搜索框
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Padding(
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padding: const EdgeInsets.all(16),
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child: TextField(
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controller: _searchController,
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decoration: InputDecoration(
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hintText: '搜索应用...',
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prefixIcon: const Icon(Icons.search),
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suffixIcon: _searchQuery.isNotEmpty
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? IconButton(
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icon: const Icon(Icons.clear),
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onPressed: () {
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_searchController.clear();
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setState(() {
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_searchQuery = '';
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});
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},
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)
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: null,
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border: OutlineInputBorder(
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borderRadius: BorderRadius.circular(12),
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),
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),
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onChanged: (value) {
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setState(() {
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_searchQuery = value;
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});
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},
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),
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),
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// 应用列表
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Expanded(
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child: FutureBuilder<List<AppCategoryItem>>(
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future: _loadAppCategories(),
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builder: (context, snapshot) {
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if (snapshot.connectionState == ConnectionState.waiting) {
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return const Center(child: CircularProgressIndicator());
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}
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if (snapshot.hasError) {
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return ErrorStateWidget.dataLoad(
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message: _getErrorMessage(snapshot.error!),
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onRetry: () {
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setState(() {});
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},
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);
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}
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final items = snapshot.data ?? [];
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final filteredItems = _searchQuery.isEmpty
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? items
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: items.where((item) {
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return item.appName.toLowerCase().contains(_searchQuery.toLowerCase()) ||
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item.packageName.toLowerCase().contains(_searchQuery.toLowerCase());
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}).toList();
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if (filteredItems.isEmpty) {
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if (_searchQuery.isEmpty) {
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return EmptyStateWidget.noApps(
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onAction: () {
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setState(() {});
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},
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);
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} else {
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return EmptyStateWidget.noSearchResults(query: _searchQuery);
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}
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}
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return ListView.builder(
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padding: const EdgeInsets.symmetric(horizontal: 16),
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itemCount: filteredItems.length,
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itemBuilder: (context, index) {
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final item = filteredItems[index];
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return _buildAppCategoryItem(context, theme, item);
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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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Widget _buildAppCategoryItem(
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BuildContext context,
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ThemeData theme,
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AppCategoryItem item,
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) {
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return Card(
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margin: const EdgeInsets.only(bottom: 8),
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child: ListTile(
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leading: Container(
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width: 40,
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height: 40,
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decoration: BoxDecoration(
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color: AppTheme.getCategoryColor(item.category).withOpacity(0.1),
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borderRadius: BorderRadius.circular(8),
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),
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child: Icon(
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Icons.phone_android,
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color: AppTheme.getCategoryColor(item.category),
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),
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),
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title: Text(
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item.appName,
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style: theme.textTheme.bodyLarge?.copyWith(
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fontWeight: FontWeight.w500,
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),
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),
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subtitle: Text(
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item.packageName,
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style: theme.textTheme.bodySmall?.copyWith(
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color: theme.colorScheme.onSurface.withOpacity(0.6),
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),
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),
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trailing: PopupMenuButton<String>(
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icon: Row(
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mainAxisSize: MainAxisSize.min,
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children: [
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Container(
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padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 4),
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decoration: BoxDecoration(
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color: AppTheme.getCategoryColor(item.category).withOpacity(0.1),
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borderRadius: BorderRadius.circular(12),
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),
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child: Text(
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AppTheme.getCategoryName(item.category),
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style: TextStyle(
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color: AppTheme.getCategoryColor(item.category),
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fontSize: 12,
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fontWeight: FontWeight.w500,
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),
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),
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),
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const SizedBox(width: 8),
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const Icon(Icons.arrow_drop_down),
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],
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),
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onSelected: (String category) async {
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await _categoryService.setCategory(item.packageName, category);
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setState(() {});
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if (context.mounted) {
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(
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content: Text('已将 ${item.appName} 分类为 ${AppTheme.getCategoryName(category)}'),
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duration: const Duration(seconds: 2),
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),
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);
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}
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},
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itemBuilder: (BuildContext context) {
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return _availableCategories.map((category) {
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return PopupMenuItem<String>(
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value: category,
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child: Row(
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children: [
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if (item.category == category)
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const Icon(Icons.check, size: 20, color: AppTheme.primaryColor)
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else
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const SizedBox(width: 20),
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const SizedBox(width: 8),
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Container(
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width: 12,
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height: 12,
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decoration: BoxDecoration(
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color: AppTheme.getCategoryColor(category),
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shape: BoxShape.circle,
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),
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),
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const SizedBox(width: 8),
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Text(AppTheme.getCategoryName(category)),
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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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);
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}
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String _getErrorMessage(Object error) {
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final errorString = error.toString().toLowerCase();
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if (errorString.contains('permission') || errorString.contains('权限')) {
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return '需要授予应用使用权限';
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} else if (errorString.contains('network') || errorString.contains('网络')) {
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return '网络连接失败，请检查网络';
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} else if (errorString.contains('database') || errorString.contains('数据库')) {
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return '数据库操作失败';
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}
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return '加载失败，请稍后重试';
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}
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}
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class AppCategoryItem {
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final String packageName;
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final String appName;
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final String category;
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final bool isCustom;
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AppCategoryItem({
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required this.packageName,
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required this.appName,
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required this.category,
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required this.isCustom,
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});
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}
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