title: USB type-c headset detection in Android
body: <p>Sorry for question. It's my first time here. I did some search on net but no result. Really need help to clarify this problem.
  I have two question about USB headset detection and status query.</p>
  
  <ol>
  <li><p>My target device is running Android version 7.1.1. The device has a USB type-c connector and support USB type-c headset. However it seems AudioService will not send intent when USB headset status changed. Does OEM have to implement his own intent for this case?</p></li>
  <li><p>For traditional wire headset, I can use AudioManager.isWiredHeadsetOn() to check it's status. But USB type-c headset seems not work in this way. Is there any other way to get the status of USB headset?</p></li>
  </ol>
  
  <p>Thanks,
  Lei</p>