我试图创建一个.NET Maui应用程序，从通过USB（RS-232仿真）连接的设备（条形码扫描仪）读取，但我仍然无法获得打开和端口打开的权限。当然，我也有兴趣从港口阅读。请不要有你的成功的解决方案可用？不幸的是，我在.NET Maui文档中找不到任何东西。
这是我的代码，基于[https：//stackoverflow.com/questions/73534644/how-to-write-raw-data-to-usb-connected-device-using-net-maui]中的示例：

Activity act = Platform.CurrentActivity;
UsbManager manager = (UsbManager)act.GetSystemService(Context.UsbService);
IDictionary<string, UsbDevice> devicesDictionary = manager.DeviceList;
UsbDevice dvc = _usbDevice; // I find _usbDevice successfully

string ACTION_USB_PERMISSION = "com.MauiAndroidSerialPort.USB_PERMISSION";
var interf = dvc.GetInterface(1);
var outEndpoint = interf.GetEndpoint(1);
PendingIntent mPermissionIntent = PendingIntent.GetBroadcast(act, 0, new Intent(ACTION_USB_PERMISSION), 0);

IntentFilter filter = new IntentFilter(ACTION_USB_PERMISSION);
if (manager.HasPermission(dvc) == false)
    manager.RequestPermission(dvc, mPermissionIntent);

var deviceConnection = manager.OpenDevice(dvc);

if (deviceConnection != null)
    deviceConnection.ClaimInterface(interf, true).ToString();

我获取设备，但应用程序在行“PendingIntent mPermissionIntent = PendingIntent.GetBroadcast（act，0，new Intent（ACTION_USB_PERMISSION），0）;“