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POUnused IBOutlets leaking
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Id
3290348
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2010-07-20T13:21:57.647
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2010-07-20T13:45:26.953
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2010-07-20T13:39:30.640
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text
Body
So, I'm loading by XIB file and it contains a set of <code>UIBarButtonItems</code>. Some of the items are used when the <code>viewDidLoad:</code> is called. <pre><code>@interface MyViewController : UIViewController { IBOutlet UIBarButtonItem *addButton; IBOutlet UIBarButtonItem *editButton; IBOutlet UIBarButtonItem *doneButton; } // NB: There are no properties retaining anything. @end @implementation MyViewController - (void)viewDidLoad { [super viewDidLoad]; NSArray *initialToolbarItems = [[NSArray alloc] initWithObjects: addButton, editButton, nil]; self.toolbarItems = initialToolbarItems; [initialToolbarItems release]; } - (void)dealloc { [super dealloc]; // Nothing else to do here since we are not retaining anything. // … or are we? <insert dramatic music here> } @end </code></pre> If I push the above the above ViewController onto a UINavigationController everything seems fine, all the IBOutlets are assigned and behave like expected. The instant i pop the ViewController from the navigation stack Instruments' Leaks tells me that I am leaking a <code>UIBarButtonItem</code>. Woe is me! If I change <code>dealloc:</code> to <pre><code>- (void)dealloc { [doneButton release]; [super dealloc]; } </code></pre> no leaks occur. The same goes if I use <code>doneButton</code> in <code>viewDidLoad:</code> <pre><code> NSArray *initialToolbarItems = [[NSArray alloc] initWithObjects: addButton, editButton, doneButton, nil]; </code></pre> My question: Why is my <code>IBOutlet</code> leaking when I don't use it. I don't retain it at any point. The the NIB loader should own the object, right?
Tags
<iphone><objective-c><interface-builder>
Title
Unused IBOutlets leaking
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