android学习之USB监听

  IntentFilter intentFilter = new IntentFilter();
  intentFilter.addAction(Intent.ACTION_MEDIA_REMOVED);
  intentFilter.addAction(Intent.ACTION_MEDIA_EJECT);
  intentFilter.addAction(Intent.ACTION_MEDIA_UNMOUNTED);
  intentFilter.addAction(Intent.ACTION_MEDIA_MOUNTED);
  intentFilter.addDataScheme("file");
  registerReceiver(mUsbStateReceiver, intentFilter);