Bits in the action code that represent a pointer index, used with MotionEventActions.PointerDown and MotionEventActions.PointerUp. Shifting down by MotionEventActions.PointerIndexShift provides the actual pointer index where the data for the pointer going up or down can be found; you can get its identifier with MotionEvent.GetPointerId(int) and the actual data with MotionEvent.GetX(int) etc.