Set own drawable to a ArrayList<OverlayItem>

Hi, i’m developing an Android app using OSM, the problem is that i want to change the default marker for one custom drawable item. I know how to make it with a simple “Overlay Item” (with “setMarker”) but i don’t get how to do it with an “Arraylist” of “OverlayItem” for all of the items at once. I would appreciate some help.

P.D: I come from Spain sorry for my bad english