Calculate the Displacement of Scrollview while user scrolling

Question

I'm using GustureListner for a scrollview.

In that I have to calculate how many pixel that scrollview is moved during fling event.

I can get velocity and fling start and end position.

Answer 1

Better to do is extends SimpleOnGestureListener to your OnTouchListener class, so you can override onFling and onScroll.
Refer this GestureDetector.SimpleOnGestureListener