android - Scroll up a ScrollView slowly

Question

The question is "How do i scroll up a ScrollView to top very smoothly and slowly".

In my special case i need to scroll to top in about 1-2 seconds. Ive tried interpolating manually using a Handler (calling scrollTo(0, y)) but that didnt work at all.

I've seen this effect on some bookreader-apps yet, so there must be a way, im sure :D. (Text is very slowly scrolling up to go on reading without touching the screen, doing input).

Answer 1

I did it using object animator (Available in API >= 3) and it looks very good:

Define an ObjectAnimator: final ObjectAnimator animScrollToTop = ObjectAnimator.ofInt(this, "scrollY", 0);

(this refers to the class extending Android's ScrollView)

you can set its duration as you wish:

animScrollToTop.setDuration(2000); (2 seconds)

P.s. Don't forget to start the animation.