111

flutter_monisuo/lib/ui/pages/main/main_page.dart

@@ -1,6 +1,9 @@
 import 'package:flutter/material.dart';
+import 'package:provider/provider.dart';
 import 'package:shadcn_ui/shadcn_ui.dart';
 import '../../../core/theme/app_spacing.dart';
+import '../../../providers/asset_provider.dart';
+import '../../../providers/market_provider.dart';
 import '../home/home_page.dart';
 import '../market/market_page.dart';
 import '../trade/trade_page.dart';
@@ -29,6 +32,9 @@ class MainPageState extends State<MainPage> {
   String? _tradeCoinCode; // 交易页面选中的币种代码
   late final List<Widget> _pages;
 
+  // 防抖：记录上次刷新时间，同一 Tab 500ms 内不重复刷新
+  final Map<int, DateTime> _lastRefreshTime = {};
+
   @override
   void initState() {
     super.initState();
@@ -42,10 +48,35 @@ class MainPageState extends State<MainPage> {
   }
 
   void _onTabChanged(int index) {
+    final wasLoaded = _loadedPages.contains(index);
     setState(() {
       _currentIndex = index;
       _loadedPages.add(index);
     });
+    // 切换到已加载的 Tab 时刷新数据
+    if (wasLoaded) {
+      _refreshTab(index);
+    }
+  }
+
+  /// 刷新对应 Tab 的数据（带防抖）
+  void _refreshTab(int index) {
+    final now = DateTime.now();
+    final last = _lastRefreshTime[index];
+    if (last != null && now.difference(last).inMilliseconds < 500) return;
+    _lastRefreshTime[index] = now;
+
+    switch (index) {
+      case 0: // 首页 - 刷新资产概览
+        context.read<AssetProvider>().loadOverview(force: true);
+        break;
+      case 1: // 行情 - 刷新币种列表
+        context.read<MarketProvider>().loadCoins(force: true);
+        break;
+      case 3: // 资产 - 刷新全部资产
+        context.read<AssetProvider>().refreshAll(force: true);
+        break;
+    }
   }
 
   /// 切换到交易页面并选中指定币种