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POUIImage imageNamed not autoreleasing correctly
 

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    <p>For some reason, the retain/release behavior in the following code has me completely baffled.</p> <pre><code>selectedImage = [UIImage imageNamed:@"icon_72.png"]; [selectedImage release]; </code></pre> <p>This <em>should</em> break but <strong>does not</strong>. Why? I thought <code>imageNamed</code> autoreleased itself which means the release here is redundant and should break when the autorelease occurs.</p> <p>Here are snippets relevant to selectedImage from the .h and .m files:</p> <pre><code>@property (nonatomic, readonly) UIImage *selectedImage; @synthesize delegate, selectedImage, spacerBottom, currentIndex; </code></pre> <p>Other notes, this <strong>does</strong> break:</p> <pre><code>selectedImage = [UIImage imageNamed:@"icon_72.png"]; [selectedImage release]; [selectedImage release]; //objc[55541]: FREED(id): message release sent to freed object=0x59245b0 //Program received signal: “EXC_BAD_INSTRUCTION”. </code></pre> <p>As <strong>does</strong> this:</p> <pre><code>selectedImage = [UIImage imageNamed:@"icon_72.png"]; [selectedImage release]; [selectedImage autorelease]; //objc[55403]: FREED(id): message autorelease sent to freed object=0x59b54c0 //Program received signal: “EXC_BAD_INSTRUCTION”. </code></pre> <p>And so <strong>does</strong> the following:</p> <pre><code>selectedImage = [UIImage imageNamed:@"icon_72.png"]; [selectedImage autorelease]; [selectedImage release]; //objc[55264]: FREED(id): message release sent to freed object=0x592c9a0 //Program received signal: “EXC_BAD_INSTRUCTION”. </code></pre> <p>And so <strong>does</strong> this:</p> <pre><code>selectedImage = [UIImage imageNamed:@"icon_72.png"]; [selectedImage autorelease]; [selectedImage autorelease]; //objc[55635]: FREED(id): message release sent to freed object=0x5b305d0 //Program received signal: “EXC_BAD_INSTRUCTION”. </code></pre>
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    1. COlike the poster said, you are aactually overreleasing selectedImage, whenever u call a class method it iwll return an auto released object
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      1. USDaniel
 

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