Method getSerialNumber

android/src/UsbSerialHelper.java:230–238

(UsbDevice device)

  }

  private static String getSerialNumber(UsbDevice device) {
    try {
      return device.getSerialNumber();
    } catch (SecurityException e) {
      /* should not happen, because we already requested permission,
         but better be safe than sorry */
      return null;
    }
  }

  private static boolean isSameSerialNumber(UsbDevice a, UsbDevice b) {
    String as = getSerialNumber(a);