iPhone App how to programmatically detect Scrolling of scrollview?

iP开发者_Go百科hone App how to programmatically detect Scrolling of scrollview? iPhone App how to check scrollview did Scroll?

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You are looking for the delegate method:

scrollViewDidScroll:(UIScrollView *)

In your implementation of that method, you can check the content offset value for the new position.

The docs are here:

http://developer.apple.com/library/ios/#documentation/UIKit/Reference/UIScrollViewDelegate_Protocol/Reference/UIScrollViewDelegate.html

Also, if you just want to know the result of the scrolling after it is finished, see this answer for a similar question:

How to detect when a UIScrollView has finished scrolling

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You should check UIScrollViewDelegate Protocol Reference.