Android : Libgdx gesture listener doesn't work in phone but works in desktop

I have a game that I am building using libgdx. I have implemented some gesture functions using the GestureListener class. When I am testing this functions in the desktop, they work fine. But when I tested in a phone, they don't seem to respond. Am doing anything wrong here? Or do I have to make some changes for a phone.

Here is a link to my code: https://github.com/dhirajbodicherla/lyte/blob/master/core/src/com/mygdx/game/GameStage.java