添加月份选择

lib/pages/home_page.dart

@@ -22,6 +22,7 @@ class _HomePageState extends State<HomePage> {
   bool _isNavigating = false;
   final _dbService = DatabaseService();
   List<Record> records = [];
+  DateTime _selectedMonth = DateTime.now();  // 添加选中月份状态
 
   // 定义摇晃检测的常量
   static const double _shakeThreshold = 8.0;  // 单次摇晃的加速度阈值
@@ -60,7 +61,7 @@ class _HomePageState extends State<HomePage> {
     _loadRecords();
   }
 
-  /// 重置摇晃检测状态
+  /// 重置摇<EFBFBD><EFBFBD>检测状态
   void _resetShakeDetection() {
     _lastShakeTime = null;
     _recentXValues.clear();
@@ -73,7 +74,15 @@ class _HomePageState extends State<HomePage> {
 
   /// 加载记录
   Future<void> _loadRecords() async {
-    final loadedRecords = await _dbService.getAllRecords();
+    // 计算选中月份的起始和结束日期
+    final startDate = DateTime(_selectedMonth.year, _selectedMonth.month, 1);
+    final endDate = DateTime(_selectedMonth.year, _selectedMonth.month + 1, 0);
+    
+    final loadedRecords = await _dbService.getRecordsByDateRange(
+      startDate,
+      endDate,
+    );
+    
     setState(() {
       records = loadedRecords;
       records.sort((a, b) => b.createTime.compareTo(a.createTime));
@@ -170,17 +179,84 @@ class _HomePageState extends State<HomePage> {
     await _loadRecords();
   }
 
+  // 添加月份选择器组件
+  Widget _buildMonthSelector() {
+    return GestureDetector(
+      onTap: () => _showMonthPicker(),
+      child: Container(
+        padding: const EdgeInsets.all(16.0),
+        decoration: BoxDecoration(
+          color: Theme.of(context).primaryColor.withOpacity(0.1),
+          borderRadius: BorderRadius.circular(8.0),
+        ),
+        child: Row(
+          mainAxisSize: MainAxisSize.min,
+          children: [
+            Text(
+              '${_selectedMonth.year}年${_selectedMonth.month}月',
+              style: const TextStyle(
+                fontSize: 16,
+                fontWeight: FontWeight.bold,
+              ),
+            ),
+            const Icon(Icons.arrow_drop_down),
+          ],
+        ),
+      ),
+    );
+  }
+
+  // 显示月份选择器
+  Future<void> _showMonthPicker() async {
+    final DateTime? picked = await showDatePicker(
+      context: context,
+      initialDate: _selectedMonth,
+      firstDate: DateTime(2000),
+      lastDate: DateTime(2100),
+      initialDatePickerMode: DatePickerMode.year,
+    );
+    
+    if (picked != null) {
+      setState(() {
+        _selectedMonth = DateTime(picked.year, picked.month);
+      });
+      _loadRecords();  // 重新加载数据
+    }
+  }
+
   @override
   Widget build(BuildContext context) {
     return Scaffold(
       appBar: AppBar(
         title: const Text('记账本'),
       ),
-      body: RecordList(
+      body: Column(
+        children: [
+          Padding(
+            padding: const EdgeInsets.all(16.0),
+            child: Row(
+              mainAxisAlignment: MainAxisAlignment.spaceBetween,
+              children: [
+                _buildMonthSelector(),
+                Text(
+                  '总支出: ¥${records.fold(0.0, (sum, record) => sum + record.amount).toStringAsFixed(2)}',
+                  style: const TextStyle(
+                    fontSize: 16,
+                    fontWeight: FontWeight.bold,
+                  ),
+                ),
+              ],
+            ),
+          ),
+          Expanded(
+            child: RecordList(
               records: records,
               onRecordTap: _navigateToRecordPage,
               onRecordDelete: _deleteRecord,
             ),
+          ),
+        ],
+      ),
       floatingActionButton: FloatingActionButton(
         onPressed: () => _navigateToRecordPage(),
         child: const Icon(Icons.add),

lib/services/database_service.dart

@@ -91,4 +91,32 @@ class DatabaseService {
       );
     });
   }
+
+  /// 添加按日<EFBFBD><EFBFBD><EFBFBD>范围获取记录的方法
+  Future<List<Record>> getRecordsByDateRange(DateTime startDate, DateTime endDate) async {
+    final db = await database;
+    final List<Map<String, dynamic>> maps = await db.query(
+      'records',
+      where: 'createTime BETWEEN ? AND ?',
+      whereArgs: [
+        startDate.toIso8601String(),
+        endDate.toIso8601String(),
+      ],
+      orderBy: 'createTime DESC',
+    );
+
+    return List.generate(maps.length, (i) {
+      final map = maps[i];
+      return Record(
+        id: map['id'],
+        type: RecordType.values[map['type']],
+        categoryId: map['categoryId'],
+        note: map['note'],
+        amount: map['amount'],
+        createTime: DateTime.parse(map['createTime']),
+        accountId: map['accountId'],
+        imageUrls: map['imageUrls']?.split(','),
+      );
+    });
+  }
 }