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POUIScrollView height vs. UIView height
 

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  1. POUIScrollView height vs. UIView height
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    <p>In my code I am increasing height of the <code>contentSize</code> of a <code>UIScrollView</code> when the UI orientation changes to landscape in order all views fit there and the user can scroll to see it.</p> <p>In my XIB I have</p> <pre> /UIView - view |- UIScrollView - scrollView |- other subviews that should be scrollable </pre> <p>The scrollView has the same size as the view and its autoresize mask is set to resize in all directions.</p> <p>I noticed that the scrollView's height dimensions are much greater than view's height.</p> <p>E.g. I have some debug logs:</p> <pre> NSLog(@"%@ - self.view.frame=%@, self.view.bounds=%@", NSStringFromSelector(_cmd), NSStringFromCGRect(self.view.frame), NSStringFromCGRect(self.view.bounds)); NSLog(@"self.scrollView.frame=%@, self.scrollView.bounds=%@", NSStringFromCGRect(self.scrollView.frame), NSStringFromCGRect(self.scrollView.bounds)); </pre> <p>and it prints</p> <pre> willAnimateRotationToInterfaceOrientation:duration: - self.view.frame={{0, 0}, {480, 219}}, self.view.bounds={{0, 0}, {480, 219}} self.scrollView.frame={{0, 0}, {480, 399}}, self.scrollView.bounds={{0, 0}, {480, 399}} </pre> <p>And even in the Xcode IB it looks like:</p> <p><img src="https://i.stack.imgur.com/4oqYZ.png" alt="height of UIScrollView vs UIView"></p> <p>Why doesn't the <code>UIScrollView</code> have same size as the view?</p> <p>Thanks</p> <hr> <p><strong>Update</strong></p> <p>The strange thing is that when I set height of the scrollView to 460 (iPhone portrait), Xcode/IB show that the scrollView is smaller than its parent view (which also has set the same dimensions): <img src="https://i.stack.imgur.com/crRlm.jpg" alt="enter image description here"></p> <p>But now I have created a test project with 1 XIB that has only 1 <code>UIView</code>, added in there 1 <code>UIScrollView</code> and it looks normally, the <code>UIScrollView</code>'s height matches the <code>UIView</code>'s.</p> <p>So perhaps I have somehow messed up the XIB and Xcode can't handle it well.</p> <p>Anyway I am setting the dimensions programmatically (to handle rotations, UI composition changes etc.) and it works as expected. As it is my first iOS project, I was just wondering if there is any magic in <code>UIScrollView</code>. Apparently not :-)</p> <p>Thanks for all your comments.</p>
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    1. USRadek Skokan
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    1. COwhy don't you change the height of the scrollview to 460 ?
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