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    <p>I used following method to solve this problem, hope it helps you.</p> <p>First define following variables in your controllers header file.</p> <pre><code>CGPoint startPos; int scrollDirection; </code></pre> <p><em>startPos</em> will keep the <em>contentOffset</em> value when your delegate receives <strong>scrollViewWillBeginDragging</strong> message. So in this method we do this;</p> <pre><code>- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView{ startPos = scrollView.contentOffset; scrollDirection=0; } </code></pre> <p>then we use these values to determine users intended scroll direction in <strong>scrollViewDidScroll</strong> message.</p> <pre><code>- (void)scrollViewDidScroll:(UIScrollView *)scrollView{ if (scrollDirection==0){//we need to determine direction //use the difference between positions to determine the direction. if (abs(startPos.x-scrollView.contentOffset.x)&lt;abs(startPos.y-scrollView.contentOffset.y)){ NSLog(@"Vertical Scrolling"); scrollDirection=1; } else { NSLog(@"Horitonzal Scrolling"); scrollDirection=2; } } //Update scroll position of the scrollview according to detected direction. if (scrollDirection==1) { [scrollView setContentOffset:CGPointMake(startPos.x,scrollView.contentOffset.y) animated:NO]; } else if (scrollDirection==2){ [scrollView setContentOffset:CGPointMake(scrollView.contentOffset.x,startPos.y) animated:NO]; } } </code></pre> <p>finally we have to stop all update operations when user end dragging;</p> <pre><code> - (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate{ if (decelerate) { scrollDirection=3; } } </code></pre>
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    1. COHmm... Actually, after more investigation - it works *pretty* well, but the trouble is that it loses control of the direction during the deceleration phase - so if you start off moving your finger diagonally then it will appear to only move horizontally or vertically *until you let go* at which point it will decelerate in a diagonal direction for a while
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    2. CO@andygeers, it might work better if `- (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate{ if (decelerate) { scrollDirection=3; } }` was changed to `- (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate{ if (!decelerate) { scrollDirection=0; } }` and `- (void)scrollViewDidEndDecelerating{ scrollDirection=0; }`
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