Iphone sdk: finding the direction of scrolling in UIScrollView?

Determining the direction is fairly straightforward, but keep in mind that the direction can change several times over the course of a movement. For example, if you have a scrollview with paging turned on and the user swipes to go to the next page, the initial direction could be rightward, but if you have bounce turned on, it will briefly be going in no direction at all and then briefly be going leftward.

The answer by Answerbot using scrollViewDidScroll is a good way to find the current direction.

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