优化绑定逻辑

lib/modules/pairing/controllers/pairing_controller.dart

@@ -95,6 +95,7 @@ class PairingController extends GetxController with WidgetsBindingObserver {
 
   // ========== 当前设备信息 ==========
   BluetoothDevice? _currentClassicDevice;
+  int? _verifiedDevicePid;
   String? _verifiedDeviceName;
   String? _verifiedDeviceAddress;
   TextEditingController codeInputController = TextEditingController();
@@ -861,6 +862,7 @@ class PairingController extends GetxController with WidgetsBindingObserver {
               String macFromHex = extractMacFromHex(hexData, device.address);
               if (macFromHex.isNotEmpty) {
                 String code = "";
+                _verifiedDevicePid = extractAndReverseBytesToInt(hexData, 6, 7);
                 // 找到匹配的设备，提取授权码
                 if (Platform.isIOS) {
                   // iOS设备，提取13-22字节的授权码
@@ -1010,7 +1012,14 @@ class PairingController extends GetxController with WidgetsBindingObserver {
 
   //确认绑定设备
   void confirmBindDevice() async {
+    if (currentDevice == null) {
+      Logger.e(_tag, '当前设备为空!');
+      _transition(PairingState.verifying);
+      return;
+    }
+
     final response = await Api.binddevice({
+      "pid": _verifiedDevicePid,
       "code": deviceCode.value,
       "devicename": currentDevice?.name,
       "devicemac": currentDevice?.address, // 使用 address 替代 deviceId
@@ -1050,6 +1059,31 @@ class PairingController extends GetxController with WidgetsBindingObserver {
         .toUpperCase();
   }
 
+  int extractAndReverseBytesToInt(String hex, int start, int end) {
+    List<int> bytes = [];
+    // 将十六进制字符串解析为字节列表
+    for (int i = 0; i < hex.length; i += 2) {
+      bytes.add(int.parse(hex.substring(i, i + 2), radix: 16));
+    }
+
+    // 截取指定范围的字节（包含end索引）
+    List<int> slice = bytes.sublist(start, end + 1);
+    // 反转字节顺序
+    List<int> reversed = slice.toList();
+
+    String pid = reversed
+        .map((b) => b.toRadixString(16).padLeft(2, '0'))
+        .join()
+        .toUpperCase();
+    Logger.i(_tag, 'liwei-------------- 解析道Pid $pid');
+    // 将反转后的字节列表转换为整数
+    int result = 0;
+    for (int b in reversed) {
+      result = (result << 8) | (b & 0xFF); // 按字节拼接成整数
+    }
+    return result;
+  }
+
   /// 用户点击授权码输入框
   void onAutoCodeInputTap() async {
     // 调用BLE管理器的自动绑定方法