The accessible spinner is designed to be accessible without looking at the display. A click on
the spinner will not open a selection menu but will just switch the selected item, giving proper audio
feedback of the performed action.
public boolean dispatchTouchEvent(MotionEvent evt)
Touching the spinner doesn't open a selection menu but just switches to the next item. The name of the next
item is also uttered by the Android text-to-speech synthesizer.