UIImage + Resize가 메모리 경고없이 충돌 함

Question

Herer가 내 크기 조정 루틴입니다 ... CGContextDrawImage 줄에 2 또는 3 번의 루틴 호출 후에 응용 프로그램이 충돌합니다.

메모리 경고 등이 없습니다. 그냥

- (UIImage *)resizedImage:(CGSize)newSize 
       transform:(CGAffineTransform)transform 
      drawTransposed:(BOOL)transpose 
    interpolationQuality:(CGInterpolationQuality)quality { 
    CGRect newRect = CGRectIntegral(CGRectMake(0, 0, newSize.width, newSize.height)); 
    CGRect transposedRect = CGRectMake(0, 0, newRect.size.height, newRect.size.width); 


    CGImageRef imageRef = self.CGImage; 

    // Build a context that's the same dimensions as the new size 
    CGContextRef bitmap = CGBitmapContextCreate(NULL, 
               newRect.size.width, 
               newRect.size.height, 
               CGImageGetBitsPerComponent(imageRef), 
               0, 
               CGImageGetColorSpace(imageRef), 
               CGImageGetBitmapInfo(imageRef)); 

    // Rotate and/or flip the image if required by its orientation 
    CGContextConcatCTM(bitmap, transform); 

    // Set the quality level to use when rescaling 
    CGContextSetInterpolationQuality(bitmap, quality); 

    // Draw into the context; this scales the image 


////////////AFTER THAT IT CRASHS!!! 


    CGContextDrawImage(bitmap, transpose ? transposedRect : newRect, imageRef); 

     // Get the resized image from the context and a UIImage 
     CGImageRef newImageRef = CGBitmapContextCreateImage(bitmap); 
     UIImage *newImage = [UIImage imageWithCGImage:newImageRef]; 

     // Clean up 
     CGContextRelease(bitmap); 
     CGImageRelease(newImageRef); 

     return newImage; 
    } 

사람 힌트를 chrashes?

관련, 필 어쩌면

Answer 1

는 ARC에 대한 autorelease pool 또는 @autorelease{}를 추가해야합니까? 나는 이것이 도움이 될 것이라고 생각한다.