I'm trying to change the animation between Libgdx Screens. I want to write my custom animation (fade in, fade out, etc). Can someone give me a clue? I can't seem to find the implementation of the transition in the Libgdx code.
I've implemented some sliding transitions using Scene2D and the universal tween engine. You can find example code here.
http://www.netthreads.co.uk/2012/02/09/libgdx-scene2d-demo-with-scene-transitions/
Update: This article illustrates the approach I took to implement sliding transitions. There is a link at the bottom which takes you to a set of demos here https://github.com/alistairrutherford/libgdx-demos
There are clear instructions on how to build the demos but you will need to have at least a basic grasp of maven and how to set it up.