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POAuto Layout with UINavigationBar and UIBarButtonItem
 

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  1. POAuto Layout with UINavigationBar and UIBarButtonItem
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    <p>I like to create my views as standalone Xib files then instantiate them and add as subviews.</p> <p>So, when working with a <code>UINavigationBar</code>, I expected to be able to do the same thing, first creating my custom view - from the Xib - then adding it as a custom view to the <code>UIBarButtonItem</code>:</p> <pre><code>UIBarButtonItem *anItem = [[UIBarButtonItem alloc] initWithCustomView:_myCustomView]; </code></pre> <p>Then adding to the nav bar:</p> <pre><code>self.navigationBar.topItem.rightBarButtonItems = @[ anItem, anotherItem ]; </code></pre> <p>So far so good. </p> <p>Now, <code>_myCustomView</code> uses Auto Layout (AL) and I thought this would be no problem. <em>Not the case.</em> I've tried just about everything. Nothing has worked. I even tried adding the custom view as a subview of the controller that has the navigation bar. Thinking that as siblings in the view hierarchy, AL would treat it as a regular view outside the <code>UINavigationBar</code>.</p> <p>That didn't work either. The controller's <code>updateViewConstraints</code> was called but never applied. The view's initial frame stayed at <code>CGRectZero</code>. It's as if AL sees that the view is on top of a <code>UINavigationBar</code>, even as a sibling, and decides it doesn't need laying out.</p> <p>Of course, I've tried <code>bringSubviewToFront</code>, <code>translatesAutoresizingMaskIntoConstraintstranslatesAutoresizingMaskIntoConstraints</code>, and so on. The latter gave the lovely:</p> <blockquote> <p>Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Auto Layout still required after executing -layoutSubviews. MyNavigationBar's implementation of -layoutSubviews needs to call super.'</p> </blockquote> <p>So, the question is, has anyone loaded a custom view with AL from a Xib, and successfully set this as a <code>customView</code> on a <code>UIBarButtonItem</code>? If so, how?</p>
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    1. USMax MacLeod
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    1. COI have not actually filed a Radar for it yet, but I've run into this as well and it seems to be an iOS 6 bug. Creating the UIBarButtonItem and its view programmatically exhibits the same problem.
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      1. USRyan
 

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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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