feat: 获取sn

webrtc_controller_flutter/lib/main.dart

@@ -1,10 +1,10 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_webrtc/flutter_webrtc.dart';
-import 'package:uuid/uuid.dart';
 
 import 'config/ice_servers.dart';
 import 'controller/remote_controller.dart';
 import 'utils/control_commands.dart';
+import 'utils/device_utils.dart';
 import 'widgets/remote_touch_view.dart';
 
 void main() {
@@ -54,7 +54,15 @@ class _ControllerHomeState extends State<ControllerHome> {
   @override
   void initState() {
     super.initState();
-    _deviceIdController.text = 'controller_${const Uuid().v4().substring(0, 8)}';
+    _initDeviceId();
+  }
+
+  /// 异步获取设备标识并填入设备ID输入框（非系统签名，使用兜底方案）。
+  Future<void> _initDeviceId() async {
+    final id = await DeviceUtils.getSerialNumber();
+    if (mounted) {
+      setState(() => _deviceIdController.text = id);
+    }
   }
 
   @override