Start HorizontalScrollView Animation - android

I want to start HorizontalScrollView animation when I click a button.
When I click a button I see all the HorizontalScrollView at once on the screen,
but I want to see the HorizontalScrollView enter to the screen slowly from the right, and I want it to stop after it enter 30% to the screen,
and just after I scroll it with my finger, I will see the all HorizontalScrollView.
How can I do this?
Thank's.

I am not really sure what your requirement is. But if you are looking for a horizontalscrollview that continuously scrolls automatically this project souurce will help.

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:)

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I used buttons in HorizontalScrollView. normally when scroll right, after the last
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just as circle.
thanks
I don't know how to do that trick with horizontalScrollView, i thought that it's impossible, but i know one widget, that maybe can help you
http://code.google.com/p/android-wheel/
unfortunatly, it's only vertical, and you can't put buttons into it. I tried to make it horizontal, but failed. Maybe, if you will need, you'll get more luck

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