1.注释内 。是三星设备可能不支持，需要更换的代码。

2.mUsbManager。是getSystemService(Context.USB_SERVICE)获的。

3. 从stackoverflow摘过来的。源地址找不到咧。

 

 

protected static final int STD_USB_REQUEST_GET_DESCRIPTOR = 0x06;

        // http://libusb.sourceforge.net/api-1.0/group__desc.html

        protected static final int LIBUSB_DT_STRING = 0x03;

 

    public String getUSBName() {

        String strusbName = null;

        HashMap<String, UsbDevice> deviceList = mUsbManager.getDeviceList();

        if (deviceList.size() == 0) {

            return strusbName;

        }

        

        Iterator<UsbDevice> deviceIterator = deviceList.values().iterator();

        if (deviceIterator.hasNext()) {

            UsbDevice device = (UsbDevice) deviceIterator.next();

            strusbName = device.getDeviceName();

            

            Log.d("", "Name: " + device.getDeviceName()+"\n"

                     + "VID: " + device.getVendorId()

                                + "       PID: " + device.getProductId());

            

        UsbInterface intf = device.getInterface(0);

        int epc = 0;

        epc = intf.getEndpointCount();

        Log.d("","Endpoints:" + epc + "\n");

        Log.d("","Permission:" + Boolean.toString(mUsbManager.hasPermission(device))  + "\n");

        UsbDeviceConnection connection = mUsbManager.openDevice(device);

        if(null==connection){

            Log.d("","(unable to establish connection)\n");

        } else {

            // Claims exclusive access to a UsbInterface.

            // This must be done before sending or receiving data on

            // any UsbEndpoints belonging to the interface.

            connection.claimInterface(intf, true);

            // getRawDescriptors can be used to access descriptors

            // not supported directly via the higher level APIs,

            // like getting the manufacturer and product names.

            // because it returns bytes, you can get a variety of

            // different data types.

            byte[] rawDescs = connection.getRawDescriptors();

            String manufacturer = "", product = "";

            try

            {

                byte[] buffer = new byte[255];

                int idxMan = rawDescs[14];

                int idxPrd = rawDescs[15];

                int rdo = connection.controlTransfer(UsbConstants.USB_DIR_IN

                        | UsbConstants.USB_TYPE_STANDARD, STD_USB_REQUEST_GET_DESCRIPTOR,

                        (LIBUSB_DT_STRING << 8) | idxMan, 0, buffer, 0xFF, 0);

                manufacturer = new String(buffer, 2, rdo - 2, "UTF-16LE");

                rdo = connection.controlTransfer(UsbConstants.USB_DIR_IN

                                | UsbConstants.USB_TYPE_STANDARD, STD_USB_REQUEST_GET_DESCRIPTOR,

                        (LIBUSB_DT_STRING << 8) | idxPrd, 0, buffer, 0xFF, 0);

                product = new String(buffer, 2, rdo - 2, "UTF-16LE");

                

/*                int rdo = connection.controlTransfer(UsbConstants.USB_DIR_IN

                        | UsbConstants.USB_TYPE_STANDARD, STD_USB_REQUEST_GET_DESCRIPTOR,

                        (LIBUSB_DT_STRING << 8) | idxMan, 0x0409, buffer, 0xFF, 0);*/

            } catch (UnsupportedEncodingException e)

            {

            e.printStackTrace();

            }

            Log.d("","Manufacturer:" + manufacturer + "\n");                      

            Log.d("","Product:" + product + "\n");                        

            Log.d("","Serial#:" + connection.getSerial() + "\n");                     

        }

        

        }

        return strusbName;

    }