android book page scrolling with transparent background - android

I want to make a book page scrolling effect like the picture below.
This is a Standby screen in Acer Liquid.
It shows a transparent layout slidable with many views on it, and the left-bottom corner shows a book page rolling-up effect. The corner rolled is draggable and transparent.
If I slide the views, the corner rolled shows the views' moving with transparent.
That is what I don't know how to do.
I did the corner rolled with a screenshot bitmap. Take a screenshot and roll it up... That's what I did. And that means the corner rolled will be no change if I slide the views.. because it is a picture!
Does anybody know how to do that?

There is an open source library you can use. https://github.com/harism/android_page_curl

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Perhaps android-3d-flip-view-transition is what you are looking for? There is also the FlipAnimator class, it really depends on how you want to implement this but from what I can tell they both allow you to specify pivotal points so you can flip left-to-right like a book or centered like in iOS when you click the little "i" info button at the bottom-right hand corner of some apps.

Android: how to use the 9patch creator?

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The first image is the scrollhandle.9.png that I include in my app's resources.
The second image shows what this 9patch image looks like when used in my app.
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Edit: With help from posters, I was able to get an image that works. I added it below to help those who may find this in the future.
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