ble已经链接，则不回连

lib/data/services/bluetooth_manager.dart

@@ -3,6 +3,7 @@ import 'package:get/get.dart';
 import 'package:classic_bluetooth/classic_bluetooth.dart';
 import '../../core/utils/logger.dart';
 import '../../routes/app_routes.dart';
+import 'ble_manager.dart';
 
 // 重新导出蓝牙设备类型，让外部可以通过BluetoothManager访问
 export 'package:classic_bluetooth/classic_bluetooth.dart' show BluetoothDevice;
@@ -19,7 +20,7 @@ class BluetoothManager extends GetxService {
   // 当前经典蓝牙设备
   final Rx<BluetoothDevice?> currentDeviceRx = Rx<BluetoothDevice?>(null);
   BluetoothDevice? get currentDevice => currentDeviceRx.value;
-
+  final BleManager _bleManager = Get.find<BleManager>();
   // 订阅
   StreamSubscription<BluetoothEvent>? _bluetoothSubscription;
 
@@ -75,7 +76,7 @@ class BluetoothManager extends GetxService {
             currentDeviceRx.value = newDevice;
 
             // 检查当前是否在OTA升级界面，如果是则不跳转
-            if (!_isInOtaUpgradePage()) {
+            if (!_isInOtaUpgradePage() && !_bleManager.isConnected) {
               Get.toNamed(Routes.pairing, arguments: newDevice);
             } else {
               Logger.info('当前在OTA升级界面，跳过配对页面跳转');