Action after mapview (swipe) animation stops

问题

The problem

I'm using a mapview with an overlay. When I swipe, the overlay has to be redrawn. But it just chooses some random point during the animation.

The question

How can I make sure that I perform an action (in general) only after the mapview stopped moving?

来源：https://stackoverflow.com/questions/12194643/action-after-mapview-swipe-animation-stops