feat:增加加载中组件

lib/views/record.dart

@@ -1,8 +1,10 @@
 import 'package:flutter/material.dart';
+import 'package:food_hub_app/provider/food_provider.dart';
 import 'package:food_hub_app/widgets/common/index.dart';
 import 'package:food_hub_app/widgets/recipe/calendar.dart';
 import 'package:food_hub_app/widgets/recipe/list.dart';
 import 'package:food_hub_app/widgets/recipe/timeline.dart';
+import 'package:provider/provider.dart';
 
 enum RecordTab {
   recipe('菜谱'),
@@ -29,7 +31,7 @@ class _RecordPageState extends State<RecordPage> {
     RecipeTimeline(),
   ];
 
-  Widget buildTabs({
+  Widget _buildTabs({
     required BuildContext context,
     required RecordTab currentTab,
     required ValueChanged<RecordTab> onTabChanged,
@@ -46,18 +48,35 @@ class _RecordPageState extends State<RecordPage> {
     );
   }
 
+  void _onTabChange(RecordTab tab, FoodProvider provider) {
+    setState(() {
+      _currentTab = tab;
+    });
+
+    switch (tab) {
+      case RecordTab.recipe:
+        provider.refreshRecipeList();
+        break;
+      case RecordTab.calendar:
+        provider.refreshRecordList(null, null);
+        break;
+      case RecordTab.timeline:
+        final year = DateTime.now().year;
+        provider.refreshRecordList("$year-01-01", "$year-12-31");
+        break;
+    }
+  }
+
   @override
   Widget build(BuildContext context) {
+    final provider = context.watch<FoodProvider>();
+
     return Column(
       children: [
-        buildTabs(
+        _buildTabs(
           context: context,
           currentTab: _currentTab,
-          onTabChanged: (tab) {
-            setState(() {
-              _currentTab = tab;
-            });
-          },
+          onTabChanged: (tab) => _onTabChange(tab, provider),
         ),
         Expanded(
           child: IndexedStack(index: _currentTab.index, children: _tabPages),