UsbManager.getDeviceList() returns empty

Question

I want to use the UsbManager API by wrote following code:

In the Activity code:

        UsbManager manager = (UsbManager) getSystemServi         


        

Answer 1

This code works fine for me. Although your code looks similar you can recheck.

  UsbManager usbManager = (UsbManager) getSystemService(USB_SERVICE);
  HashMap map = usbManager.getDeviceList();
  Iterator it = map.values().iterator();

  while(it.hasNext()) {
    UsbDevice device = it.next();
    // use device info
  }