title: How to indicate currently selected control in Xamarin?
body: <p>The Android device I am using does not have any touchscreen. All it has is a touch pad that can generate KEYCODE_DPAD_UP, KEYCODE_DPAD_DOWN, etc. However, I am not sure if my Xamarin app is responding to these events. Is there any setting that one can enable to identify current selection among a group of controls.</p>
  
  <p>When I go the device's home screen and use the DPad keys to move around, I see a thin square around the icon that is currently selected. I am hoping there is a similar setting within Xamarin app to turn on this behavior. Regards.</p>