UIImage +調整大小崩潰沒有內存警告

Question

Herer是我的調整大小例程... 在行CGContextDrawImage該應用程序崩潰後2或3調用的例程。

沒有記憶警告什麼的。 它只是chrashes

- (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; 
    } 

有人提示嗎？

的問候，菲爾

Answer 1

也許你應該添加autorelease pool或@autorelease{}的ARC？ 我認爲，這會有所幫助。