First things first, hi to everyone. I'm new to this forum (and to android development), but I intend to get quite far in this world. Hopefully, I'll be able to count on all you other android lovers to do that Well, let's cut to the chase. I'm building a small app, simple gallery with a bunch of images, just for practice. Thing is, there are a few things I'd like to accomplish, and to do that I need to make a certain call just as soon as the animation ends. In case there is some confusion, I'll explain: when you slide left or right on a gallery, the image follows your finger, and when you let go the image slowly centers itself, until it stops. THAT is the moment when I need to do some things. Is there any event I can catch that triggers at that moment? If so, any clues on how to catch it? Just in case you're interested, what I'm trying to accomplish here is a circular view, but I don't like the way some people do it (by returning Integer.MAX_VALUE as a count and starting in the middle). I want to do it with a smaller size, and change the position in the gallery when reaching the upper or lower limits. But to do that seamlessly, I must do it when the above said animation stops. Any ideas, oh android masters?