高通android设备libusb,Android 用 libusb 操作 USB 设备，无须 root

获取 FileDescriptor

// get FileDescriptor by Android USB Host API

UsbManager manager = (UsbManager) mContext.getSystemService(Context.USB_SERVICE);

final String ACTION_USB_PERMISSION = "com.android.example.USB_PERMISSION";

HashMap deviceList = manager.getDeviceList();

Iterator deviceIterator = deviceList.values().iterator();

PendingIntent mPermissionIntent = PendingIntent.getBroadcast(mContext, 0,

new Intent(ACTION_USB_PERMISSION), 0);

IntentFilter filter = new IntentFilter(ACTION_USB_PERMISSION);

mContext.registerReceiver(mUsbReceiver, filter);

int fd = -1;

while(deviceIterator.hasNext()){

UsbDevice device = deviceIterator.next();

Log.i(TAG, device.getDeviceName() + " " + Integer.toHexString(device.getVendorId()) +

" " + Integer.toHexString(device.ge