如何在启用LockTask模式的安卓应用程序中获得与U盘通信的运行时许可？

<uses-permission android:name="android.permission.USB_PERMISSION" />

UsbManager usbManager = (UsbManager) getSystemService(Context.USB_SERVICE);

PendingIntent permissionIntent = PendingIntent.getBroadcast(this, 0, new Intent(ACTION_USB_PERMISSION), 0);
usbManager.requestPermission(device, permissionIntent);

private final BroadcastReceiver usbReceiver = new BroadcastReceiver() {
    public void onReceive(Context context, Intent intent) {
        String action = intent.getAction();
        if (ACTION_USB_PERMISSION.equals(action)) {
            synchronized (this) {
                UsbDevice device = (UsbDevice) intent.getParcelableExtra(UsbManager.EXTRA_DEVICE);
                if (intent.getBooleanExtra(UsbManager.EXTRA_PERMISSION_GRANTED, false)) {
                    if (device != null) {
                        // 在此处处理获得权限后的U盘通信操作
                    }
                } else {
                    // 在此处处理未获得权限的情况
                }
            }
        }
    }
};

IntentFilter filter = new IntentFilter(ACTION_USB_PERMISSION);
registerReceiver(usbReceiver, filter);