Animate rows within a ListView

I saw the Android app "Mobisle Notes Free" implement a really cool ListView, where a row gets moved to the bottom if its checkbox is checked. It's not just a simple refresh, but an actual animation where you see the row travel to the bot开发者_StackOverflow中文版tom. Does anyone know how to implement this?

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You could check out the Android example application “ApiDemos.” It provides you with some source code that can show you how to do widget based animation.

Edit:

I believe it is classes Animation1, Animation2, and Animation3.