change structure of Track device transfer page

lib/controllers/providers/api/device_transfer_provider.dart

@@ -44,6 +44,10 @@ class DeviceTransferProvider extends LoadingNotifier {
       } else {
         nextPage = false;
       }
+    },
+    onSuccess: (){
+      stateCode=200;
+      notifyListeners();
     });
   }
 

lib/views/pages/device_transfer/track_device_transfer.dart

@@ -24,13 +24,9 @@ class TrackDeviceTransferPage extends StatefulWidget {
 
 class _TrackDeviceTransferPageState extends State<TrackDeviceTransferPage> with TickerProviderStateMixin {
   late DeviceTransferProvider _deviceTransferProvider;
-  UserProvider? _userProvider;
-  late SettingProvider _settingProvider;
   @override
   Widget build(BuildContext context) {
     _deviceTransferProvider = Provider.of<DeviceTransferProvider>(context);
-    _userProvider = Provider.of<UserProvider>(context);
-    _settingProvider = Provider.of<SettingProvider>(context);
     Subtitle? _subtitle = AppLocalization.of(context)?.subtitle;
 
     //print(_deviceTransferProvider.items.length);