Tapping

    
      onTapDown
      A pointer that might cause a tap has contacted the
screen at a particular location.
      onTapUp
      A pointer that triggers a tap has stopped contacting the
screen at a particular location.
      onTap
      A tap has occurred.
      onTapCancel
      The pointer that previously triggered the onTapDown
won’t cause a tap.

Double tapping

    
      onDoubleTap
      The user tapped the screen at the same location twice in
quick succession.

Long pressing

    
      onLongPress
      A pointer has remained in contact with the screen
at the same location for a long period of time.

Vertical dragging