更新web实时数据

lib/pages/main_bottom/component/main_page_b_bottom_change.dart

@@ -1,16 +1,29 @@
 import 'package:flutter/material.dart';
 import 'package:vbvs_app/pages/common/bezier_bottom_navigation_bar.dart';
 import 'package:vbvs_app/pages/mh_page/MattressControl.dart';
-import 'package:vbvs_app/pages/mh_page/device_list.dart';
 import 'package:vbvs_app/pages/mh_page/homepage/mht_sleep_report_page.dart';
 import 'package:vbvs_app/pages/mh_page/homepage/new_Home_page.dart';
 import 'package:vbvs_app/pages/mh_page/new_mine_page.dart';
 
 class MainPageBBottomChange extends StatefulWidget {
+  // 全局 key，用于静态访问 _HomePageState
+  static final GlobalKey<_HomePageState> globalKey = GlobalKey<_HomePageState>();
+
+   MainPageBBottomChange({Key? key}) : super(key: globalKey);
+
+  // 静态方法：外部调用，跳转 tab
+  static void jumpTo(int index) {
+    final state = globalKey.currentState;
+    if (state != null) {
+      state.switchTab(index);
+    }
+  }
+
   @override
   _HomePageState createState() => _HomePageState();
 }
 
+
 class _HomePageState extends State<MainPageBBottomChange>
     with SingleTickerProviderStateMixin {
   int selectedIndex = 0;
@@ -95,4 +108,23 @@ class _HomePageState extends State<MainPageBBottomChange>
       ),
     );
   }
+
+  void switchTab(int index) {
+  final begin = currentPosition;
+  final end = index.toDouble();
+
+  _positionAnimation = Tween<double>(begin: begin, end: end).animate(
+    CurvedAnimation(parent: _controller, curve: Curves.easeOut),
+  )..addListener(() {
+      setState(() {});
+    });
+
+  _controller.forward(from: 0.0);
+  currentPosition = end;
+
+  setState(() {
+    selectedIndex = index;
+  });
+}
+
 }