title: How to detect MTP/PTP device in Honeycomb?
body: <p>I want to detect the MTP/PTP device when it plugs in the android device. I know there is one method using Intent: <code>android.hardware.usb.action.USB_DEVICE_ATTACHED</code> and then defining meta-data which using resource like <code>&lt;usb-device class="6" subclass="1" protocol="1"&gt;</code>, but it doesn't work. The system doesn't send this intent to the registered application.</p>
  
  <p>Thus, does anyone know how to do it?</p>