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POAutorelease methods leaking
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copied!<p><p> Hi everyone,</p> <p>I'm stuck these days on some memory leaks. The app I'm making is working like that :</p> <p>1 - Loads a file into memory<br> 2 - Create a screen according to some values read on that file<br> 3 - Display the view</p> <p>Far from now everything is normal when I start the app and get the first screen. There is no leaks.</p> <p>But when I want to load an other screen from the current view I got plenty of leaks from autoreleased objects. And I don't understand because when I load a new view from the current one the process is similar :</p> <p>1 - Desctruction of the current view<br> 2 - Loads a file into memory<br> 3 - Create a screen according to some values read on that file<br> 4 - Display the view</p> <p>Here are some concrete example of what is leaking :</p> <pre><code>-(NSString*)pathForApplicationName:(NSString*)appName withImage:(NSString*)imagePath { NSArray *searchPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentPath = [searchPaths lastObject]; return [NSString stringWithFormat:@"%@/%@/assets/www/%@",documentPath,[self convertSpacesInDashes:appName],imagePath]; } </code></pre> <p>The stringWithFormat:.. is leaking. An other example :</p> <pre><code>-(UIColor*)convertHexColorToUIColor:(NSString*)hexColor { if ([hexColor length] == 7) { unsigned c = 0; NSScanner *scanner = [NSScanner scannerWithString:hexColor]; [scanner setScanLocation:1]; [scanner scanHexInt:&c]; return [UIColor colorWithRed:((c>>16)&0xFF)/255.0 green:((c>>8)&0xFF)/255.0 blue:(©&0xFF)/255.0 alpha:1.]; } else { return nil; } } </code></pre> <p>Same, colorWithRed:.. is leaking.</p> <p>I've read apple's documentation regarding autoreleased objects. And I've even tried to recreate a new pool like that, without any success : </p> <pre><code>-(UIView)myFonctionWhoGenerateScreens: for () { NSAutoreleasePool *subPool = [[NSAutoreleasePool alloc] init]; // There are all of the autoreleased method calls that are leaking... [subPool drain]; } } </code></pre> <p>I think I am missing something. Does anyone has an idea? </p> <p>Leak backtrace <img src="https://i.stack.imgur.com/GcHjc.png" alt="enter image description here"></p> <p>Thanks a lot.</p> <p>Edit : </p> <p>Here is how the return of the leaking function is handled in applyPropertyName:withPropertyType:onComponent:withValue:forStyling method :</p> <pre><code>else if ([propertyType isEqualToString:@"AB_IMAGE"]) { UIImage *image = [UIImage imageWithContentsOfFile:[self pathForApplicationName:applicationName withImage:value]]; @try { [component setValue:image forKey:propertyName]; } @catch (NSException *exception) { #if DEBUG_CONTROLLER NSLog(@" %@ Not key-value compliant for <%@,%@>",component,propertyName,image); #endif } } </code></pre> <p>Edit 2 : Here is the complete back trace <a href="http://ganzolo.free.fr/leak/%20Leak.zip" rel="nofollow noreferrer">http://ganzolo.free.fr/leak/%20Leak.zip</a></p> <p></p></p>

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