daimajia/AndroidViewAnimations ? reverse-engineered prompt

Build me an Android animation library like the one in this repo, with a small demo app to show it off.

I want a simple way to apply fun preset animations to any view, like shake, bounce, fade, flip, rotate, slide, zoom, and a few special ones like hinge and roll in or out. The API should feel easy to use, something like picking a technique, setting the duration and repeat count, then playing it on a view.

Make the demo screen show a bunch of buttons or sample views so I can tap through the different effects and see them in action. Keep it smooth and polished, with the animations looking lively and natural, not stiff.

If you need current Android docs or dependency info, look them up online and use whatever is the modern recommended approach. I mainly want the library and a working sample app that proves the animations all run correctly.