8299e1ad62
- 创建 Item 模型类，包含 toMap 和 fromMap 方法 - 新增 ItemRepository 类，负责数据库操作 - 实现 ItemScopedModel，用于状态管理 - 更新 SQLiteHelper，使用新的 item 表结构- 删除旧的 SQLiteOperation 文件
84 lines
2.4 KiB
Dart
84 lines
2.4 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:item_tracker/screens/addItem/add_item_screen.dart';
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import '../scoped_models/item_scoped_model.dart';
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class ItemListScreen extends StatefulWidget {
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@override
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_ItemListScreenState createState() => _ItemListScreenState();
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}
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class _ItemListScreenState extends State<ItemListScreen> {
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late Future<List<Map<String, dynamic>>> _itemsFuture;
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@override
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void initState() {
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super.initState();
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_itemsFuture = _loadItems(); // 初始化 Future
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}
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Future<List<Map<String, dynamic>>> _loadItems() async {
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final itemScopedModel = ItemScopedModel.of(context);
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return await itemScopedModel.loadItems();
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}
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Future<void> _refreshData() async {
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setState(() {
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_itemsFuture = _loadItems(); // 更新 Future，触发 FutureBuilder 重新加载数据
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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 Scaffold(
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appBar: AppBar(
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title: Text('物品列表'),
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),
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body: RefreshIndicator(
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child: FutureBuilder<List<Map<String, dynamic>>>(
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future: _itemsFuture, // 绑定到可变的 Future 对象
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builder: (context, snapshot) {
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if (snapshot.connectionState == ConnectionState.waiting) {
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return Center(child: CircularProgressIndicator());
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} else if (snapshot.hasError) {
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return Center(child: Text('Error: ${snapshot.error}'));
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} else {
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final items = snapshot.data ?? [];
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return ListView.builder(
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itemCount: items.length,
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itemBuilder: (context, index) {
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final item = items[index];
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return ListTile(
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title: Text(item['name']),
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subtitle: Text(item['context']),
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);
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},
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);
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}
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},
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),
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onRefresh: _refreshData,
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),
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floatingActionButton: FloatingActionButton(
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onPressed: () async {
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final shouldRefresh = await Navigator.push(
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context,
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MaterialPageRoute(builder: (context) => AddItemScreen()),
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);
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print('shouldRefresh${shouldRefresh}');
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if (shouldRefresh == true) {
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print('刷新中');
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_refreshData();
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}
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},
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child: Icon(
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Icons.add,
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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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