title: How do I know if a MotionEvent is relative or absolute?
body: <p>I am implementing <code>OnTouchListener</code> and am receiving MotionEvent objects. Some <code>ACTION_MOVE</code> events reports absolute X/Y coordinates, while some reports relative coordinates.</p>
  
  <p>How can I ask a <code>MotionEvent</code> what kind of coordinates it currently represents?</p>