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POUIViewController does not retain its programmatically-created UISearchDisplayController
 

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    <p>In the <code>UIViewController</code> <a href="http://developer.apple.com/library/ios/#DOCUMENTATION/UIKit/Reference/UIViewController_Class/Reference/Reference.html#//apple_ref/occ/instp/UIViewController/searchDisplayController" rel="nofollow noreferrer">documentation</a> about the <code>searchDisplayController</code> property <a href="http://developer.apple.com/library/ios/#DOCUMENTATION/UIKit/Reference/UIViewController_Class/Reference/Reference.html#//apple_ref/occ/instp/UIViewController/searchDisplayController" rel="nofollow noreferrer">1</a> it says:</p> <p>If you create your search display controller programmatically, this property is set automatically by the search display controller when it is initialized.</p> <p>And when I create my UISearchDisplayController thusly:</p> <pre><code>[[[UISearchDisplayController alloc] initWithSearchBar:searchBar contentsController:self] autorelease]; </code></pre> <p><code>-[UIViewController searchDisplayController]</code> is not <code>nil</code>. However, it is nilled out after the event loop finishes, which causes the search display controller not to show when I touch inside the search bar. Nothing crashes. This is very weird. If I omit the call to <code>autorelease</code>, everything works:</p> <pre><code>[[UISearchDisplayController alloc] initWithSearchBar:searchBar contentsController:self]; </code></pre> <p>However, leaks the <code>UISearchDisplayController</code> (I verified this with Instruments). Since the <code>searchDisplayController</code> <a href="http://developer.apple.com/library/ios/#DOCUMENTATION/UIKit/Reference/UIViewController_Class/Reference/Reference.html#//apple_ref/occ/instp/UIViewController/searchDisplayController" rel="nofollow noreferrer">property</a> is marked as <code>(nonatomic, retain, readonly)</code> I expect that it would retain the <code>UISearchDisplayController</code> after it is set.</p> <p><a href="https://stackoverflow.com/q/2395272/9636">This stackoverflow article</a> is related.</p>
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