How to get notified when scrolling is ended in Gallery element

I have Gallery element with full scr开发者_如何学运维een image. And user can scroll such images. Is it possible to add some listener to Gallery and receive actions when image is totally on screen and no more scrolling. I show "Loading..." icon and then load the image. And it doesn't work good when image is changed during the scroll from "Loadin..." to right image. That's why I want to show real image only after scrolling is ended.

Thanks