StackOverflow2013

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12915284
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2012-10-16T12:59:16.877
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2012-10-16T12:59:16.877
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text
Body
<p>If you are not using ARC, then your problems may be due to some missing retain/releases. I have tried to add the ones I could find:</p> <pre><code>- (UIImage *)createWhiteImageWithSize:(CGSize)size { UIGraphicsBeginImageContext(size); CGContextSetRGBFillColor(UIGraphicsGetCurrentContext(), 255, 255, 255, 1); CGContextFillRect (UIGraphicsGetCurrentContext(), CGRectMake (0, 0, size.width, size.height)); UIImage *resultImage = [UIGraphicsGetImageFromCurrentImageContext() retain]; // <-- UIGraphicsEndImageContext(); return [resultImage autorelease]; // <-- } - (UIImage *) mergeImage:(UIImage *)backImage with:(UIImage *)frontImage onPosition:(CGPoint)position { CGSize finalSize = backImage.size; CGSize impositionSize = frontImage.size; UIGraphicsBeginImageContext(finalSize); [backImage drawInRect:CGRectMake(0, 0, finalSize.width, finalSize.height)]; [frontImage drawInRect:CGRectMake(position.x, position.y, impositionSize.width, impositionSize.height)]; UIImage *resultImage = [UIGraphicsGetImageFromCurrentImageContext() retain]; // <-- UIGraphicsEndImageContext(); return [resultImage autorelease]; // <-- } - (UIImage*) maskImage:(UIImage *)image withMask:(UIImage *)maskImage { CGImageRef maskRef = maskImage.CGImage; CGImageRef mask = CGImageMaskCreate(CGImageGetWidth(maskRef), CGImageGetHeight(maskRef), CGImageGetBitsPerComponent(maskRef), CGImageGetBitsPerPixel(maskRef), CGImageGetBytesPerRow(maskRef), CGImageGetDataProvider(maskRef), NULL, false); CGImageRef masked = CGImageCreateWithMask([image CGImage], mask); UIImage *image = [UIImage imageWithCGImage:masked]; CGImageRelease(mask); // <-- CGImageRelease(masked); // <-- return image; } - (UIImage *)invertImage:(UIImage *)originalImage { UIGraphicsBeginImageContext(originalImage.size); CGContextSetBlendMode(UIGraphicsGetCurrentContext(), kCGBlendModeCopy); [originalImage drawInRect:CGRectMake(0, 0, originalImage.size.width, originalImage.size.height)]; CGContextSetBlendMode(UIGraphicsGetCurrentContext(), kCGBlendModeDifference); CGContextSetFillColorWithColor(UIGraphicsGetCurrentContext(),[UIColor whiteColor].CGColor); CGContextFillRect(UIGraphicsGetCurrentContext(), CGRectMake(0, 0, originalImage.size.width, originalImage.size.height)); UIImage *returnImage = [UIGraphicsGetImageFromCurrentImageContext(); // <-- UIGraphicsEndImageContext(); return [returnImage autorelease]; // <-- } </code></pre>
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1. This table or related slice is empty.
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1. POHow to cut a hole in UIImage?
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1. PTAnswer
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1. USfishinear
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