public override void OnReceive(Context context, Intent intent)
{
String action = intent.Action;
if (!IsReady && ACTION_USB_PERMISSION.Equals(action))
{
lock (this)
{
Device = (UsbDevice)intent.GetParcelableExtra(UsbManager.ExtraDevice);
if (intent.GetBooleanExtra(UsbManager.ExtraPermissionGranted, false))
{
if (Device != null)
{
DeviceConnection = Manager.OpenDevice(Device);
if (DeviceConnection.ClaimInterface(Interface, true))
{
OutputRequest = new UsbRequest();
OutputRequest.Initialize(DeviceConnection, OutputEndpoint);
InputRequest = new UsbRequest();
InputRequest.Initialize(DeviceConnection, InputEndpoint);
HasPermission = true;
IsReady = true;
}
}
}
}
}
else if (!IsReady && /*!HasPermission &&*/ USB_DEVICE_ATTACHED.Equals(action))
{
// Parse for usb devices:
ParseForUsbDevices();
// Hook up USB :
PendingIntent pendingIntent = PendingIntent.GetBroadcast(MainActivity, 0, new Intent(ACTION_USB_PERMISSION), 0);
IntentFilter filter = new IntentFilter(ACTION_USB_PERMISSION);
filter.AddAction(USB_DEVICE_ATTACHED);
MainActivity.RegisterReceiver(this, filter);
if (Device != null && Interface != null && OutputEndpoint != null && InputEndpoint != null)
{
Manager.RequestPermission(Device, pendingIntent);
HasPermission = Manager.HasPermission(Device);
}
}
else if (USB_DEVICE_DETACHED.Equals(action))
{
IsReady = false;
}
}