An animation-less app can get pretty boring. Although developing an app is more for the functionality than the eye candy, the user experience will be more enriched if the user interface has some sort of animations to keep things interesting. It doesn’t have to be extensive or complicated, more often than not only requiring the right animations here and there.
That’s probably why XDA Senior Member niranjan94‘s compilation of animations XMLs can be such a valuable resource for both the novice and experienced developers alike. An idea that spawned from a lot of ‘Googling’ for animations to use in his own app, niranjan94 had decided to save you the time and effort by presenting twelve simple and useful animations to be incorporated in your app.
The animations include ones that make an element simply appear, fade in or out, slide in and out from the right, left, bottom and top of the screen, and rotate. Each animation is accompanied by its respective HTML code. And if you’re not happy with the animation speed, you can easily fix that by changing the android:duration value.
If you would like to learn more, be sure to check out the original thread._________