AnimationDrawable vs game loop

My application has one screen that has a lot of animation. Basically a map (like any strategy game) with buildings that show cycle animations (like smoke coming out). They are all static in their places, but their appearance is lively.

I use animation for all of them (this is the easiest way to scroll through frames at regular intervals).

My question is, should I stop this and go to using the game loop? And why?

thank