StackOverflow2013

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POProblem with setContentOffset:animated:YES
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copied!<p>I'm having a problem with what almost seems like a bug in iOS. I'm trying to do some really simple scrolling in a UIScrollView. If I scroll to a point with an animation, it scrolls there perfectly fine, but it <em>doesn't set the point to the scrollView</em>. I.E. when I scroll to somewhere else later, it jumps up to 0,0 and starts the animation from there.</p> <p>I'm using the following code</p> <pre><code>[scrollView setContentOffset:CGPointMake(0, 95) animated:YES]; NSLog(@"offset x %@", [[NSNumber numberWithFloat:scrollView.contentOffset.x] stringValue]); NSLog(@"offset y %@", [[NSNumber numberWithFloat:scrollView.contentOffset.y] stringValue]); </code></pre> <p>which produces output</p> <pre><code>offset x 0 offset y 0 </code></pre> <p>while the exact same code with the animation off:</p> <pre><code>[scrollView setContentOffset:CGPointMake(0, 95) animated:NO]; NSLog(@"offset x %@", [[NSNumber numberWithFloat:scrollView.contentOffset.x] stringValue]); NSLog(@"offset y %@", [[NSNumber numberWithFloat:scrollView.contentOffset.y] stringValue]); </code></pre> <p>produces output</p> <pre><code>offset x 0 offset y 95 </code></pre> <p>I'm trying to automatically scroll to a UITextView so I'm listening to some keyboard notifications where I normally do the scrolling. But I've done this test in viewDidLoad and it produces these results.</p> <p>Doing scrollView.contentOffset = CGPointMake(0,95); also sets the value correctly. It's just the animated one that doesn't.</p> <p>Edit: The code I am actually trying to run is this:</p> <pre><code>- (void)textFieldDidBeginEditing:(UITextField *)textField { //60 is half the available space in portrait mode so it puts the textfield in the centre. [self.scrollView setContentOffset:CGPointMake(0, textField.frame.origin.y-60) animated:YES]; } </code></pre> <p>Which scrolls the view to the correct position. But since it doesn't seem to set contentOffset correctly it starts the animation from 0,0 all the time. Now matter how long I wait between the animations.</p>

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