<activity
   android:name=".DemoCustomAndroidUSBActivity"
   android:label="@string/app_name">
   <intent-filter>
    <action android:name="android.intent.action.MAIN" />
    <category android:name="android.intent.category.LAUNCHER" />
   </intent-filter>
   <!-- USB -->
   <intent-filter>
     <action android:name="android.hardware.usb.action.USB_DEVICE_ATTACHED" />
   </intent-filter>
   <meta-data android:name="android.hardware.usb.action.USB_DEVICE_ATTACHED" android:resource="@xml/device_filter" />
    <!-- USB END -->
  </activity>

<?xml version="1.0" encoding="utf-8"?>
<resources>
 <usb-device vendor-id="1027" product-id="24577" />
 <usb-device vendor-id="3405" product-id="567" />
</resources>

//獲取USB設備ACTION
private static final String ACTION_USB_PERMISSION = "com.android.usb.USB_PERMISSION";
//   獲取USB設備列表及定位到要申請權限的USB設備
//   mUsbManager = (UsbManager) mContext.getSystemService(Context.USB_SERVICE);
//   HashMap<String, UsbDevice> devices = mUsbManager.getDeviceList();
//   List<UsbDevice> deviceList = new ArrayList<UsbDevice>();
//   for (UsbDevice device : devices.values()) {
//    if (3540==device.getVendorId() && 567==device.getProductId()) {//獲取打印機設備 vid和pid
//     currentDevice=device;
//    }
//   }
//開始申請USB權限
private void getUsbPermission(UsbDevice mUSBDevice) {
  UltraLog.d("開始申請USB權限");
  PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, new Intent(ACTION_USB_PERMISSION), 0);
  IntentFilter filter = new IntentFilter(ACTION_USB_PERMISSION);
  filter.addAction(UsbManager.ACTION_USB_DEVICE_ATTACHED);
  filter.addAction(UsbManager.ACTION_USB_DEVICE_DETACHED);
  mContext.registerReceiver(mUsbReceiver, filter);
  mUsbManager.requestPermission(mUSBDevice, pendingIntent); // 該代碼執(zhí)行后，系統彈出一個對話框/等待權限
//以下代碼是因為在系統層將彈出框直接修改掉了，可以不用
//  long start = System.currentTimeMillis();
//  while (!mUsbManager.hasPermission(mUSBDevice)) {
//   long current = System.currentTimeMillis();
//   if ((current - start) > 3500) {
//    break;
//   }
//   try {
//    Thread.sleep(50);
//   } catch (InterruptedException e) {
//    e.printStackTrace();
//   }
//  }
// }

private final BroadcastReceiver mUsbReceiver = new BroadcastReceiver() {
  @SuppressLint("NewApi")
  public void onReceive(Context context, Intent intent) {
   String action = intent.getAction();

   if (ACTION_USB_PERMISSION.equals(action)) {
    synchronized (this) {
     mContext.unregisterReceiver(mUsbReceiver);
     UsbDevice device = (UsbDevice) intent.getParcelableExtra(UsbManager.EXTRA_DEVICE);
     if (intent.getBooleanExtra(UsbManager.EXTRA_PERMISSION_GRANTED, false)
       && currentDevice.equals(device)) {
      //TODO 授權成功，操作USB設備
     }else{
      //用戶點擊拒絕了
     }
    }
   }
  }
 };