更新控制跳转

lib/pages/mh_page/device/mht_blueteeth_device_page.dart

@@ -170,8 +170,28 @@ class _MHTBlueteethDevicePageState extends State<MHTBlueteethDevicePage> {
               mac: r.device.remoteId.str.replaceAll(':', ''));
         }).toList();
 
+        final currentDevices = mhtBlueToothController.model.blueRawData ?? [];
+        final newDevices = <BlueToothDataModel>[];
+
+        for (var newDevice in filteredResults) {
+          // 检查设备是否已存在
+          final existingIndex =
+              currentDevices.indexWhere((d) => d.mac == newDevice.mac);
+
+          if (existingIndex >= 0) {
+            // 更新已有设备信息（如信号强度）
+            currentDevices[existingIndex] = newDevice;
+          } else {
+            // 添加新设备
+            newDevices.add(newDevice);
+          }
+        }
+
         setState(() {
-          mhtBlueToothController.model.blueRawData = filteredResults;
+          mhtBlueToothController.model.blueRawData = [
+            ...currentDevices,
+            ...newDevices
+          ];
         });
       });
 
@@ -189,6 +209,7 @@ class _MHTBlueteethDevicePageState extends State<MHTBlueteethDevicePage> {
   void _startPeriodicScan() {
     _timer = Timer.periodic(Duration(seconds: 10), (timer) {
       if (mhtBlueToothController.shouldScan.value && !isScanning) {
+        _removeOldDevices(); // 先清理老旧设备
         _startScanning();
       }
     });
@@ -693,4 +714,20 @@ class _MHTBlueteethDevicePageState extends State<MHTBlueteethDevicePage> {
       ),
     );
   }
+
+  void _removeOldDevices() {
+    final now = DateTime.now();
+    final currentDevices = mhtBlueToothController.model.blueRawData ?? [];
+
+    // 移除30秒内未出现的设备
+    final updatedDevices = currentDevices.where((device) {
+      return now.difference(device.lastSeen) < Duration(seconds: 30);
+    }).toList();
+
+    if (updatedDevices.length != currentDevices.length) {
+      setState(() {
+        mhtBlueToothController.model.blueRawData = updatedDevices;
+      });
+    }
+  }
 }