Hello all,

I am using following code in iPhone to get smaller cropped image as follows:

- (UIImage*) getSmallImage:(UIImage*) img
{
    CGSize size = img.size;
    CGFloat ratio = 0;
    if (size.width < size.height) {
    	ratio = 36 / size.width;
    } else {
    	ratio = 36 / size.height;
    }
    CGRect rect = CGRectMake(0.0, 0.0, ratio * size.width, ratio * size.height);

    UIGraphicsBeginImageContext(rect.size);
    [img drawInRect:rect];

    UIImage *tempImg = [UIGraphicsGetImageFromCurrentImageContext() retain];

    UIGraphicsEndImageContext();
    return [tempImg autorelease];
}

- (UIImage*)imageByCropping:(UIImage *)imageToCrop toRect:(CGRect)rect
{

    //create a context to do our clipping in
    UIGraphicsBeginImageContext(rect.size);
    CGContextRef currentContext = UIGraphicsGetCurrentContext();

    //create a rect with the size we want to crop the image to
    //the X and Y here are zero so we start at the beginning of our
    //newly created context

    CGFloat X = (imageToCrop.size.width - rect.size.width)/2;
    CGFloat Y = (imageToCrop.size.height - rect.size.height)/2;


    CGRect clippedRect = CGRectMake(X, Y, rect.size.width, rect.size.height);
    //CGContextClipToRect( currentContext, clippedRect);



    //create a rect equivalent to the full size of the image
    //offset the rect by the X and Y we want to start the crop
    //from in order to cut off anything before them
    CGRect drawRect = CGRectMake(0,
    							 0,
    							 imageToCrop.size.width,
    							 imageToCrop.size.height);

    CGContextTranslateCTM(currentContext, 0.0, drawRect.size.height);
    CGContextScaleCTM(currentContext, 1.0, -1.0);
    //draw the image to our clipped context using our offset rect
    //CGContextDrawImage(currentContext, drawRect, imageToCrop.CGImage);


    CGImageRef tmp = CGImageCreateWithImageInRect(imageToCrop.CGImage, clippedRect);

    //pull the image from our cropped context
    UIImage *cropped = [UIImage imageWithCGImage:tmp];//UIGraphicsGetImageFromCurrentImageContext();
    CGImageRelease(tmp);
    //pop the context to get back to the default
    UIGraphicsEndImageContext();

    //Note: this is autoreleased*/
    return cropped;
}

I am using following line of code in cellForRowAtIndexPath to update the image of the cell:

cell.img.image = [self imageByCropping:[self getSmallImage:[UIImage imageNamed:@"goal_image.png"]] toRect:CGRectMake(0, 0, 36, 36)];

Now when I add this table view and pop it from navigation controller, I see a memory hike.I see no leaks but memory keeps climbing.

Please note that the images changes for each row and I am creating the controller using lazy initialization that is I create or alloc it whenever I need it.

I saw on internet many people facing the same issue, but very rare good solutions. I have multiple views using the same way and I see almost memory raised to 4MB within 20-25 view transitions.

What is the good solution to resolve this issue.

tnx.