Question

I’ve found some other answers here, but they don’t seem to apply/work, so I figure it might be due to my particular code.

In my app, I have an array of UIImages, which are actually scaled down photos taken by the iPhone camera.

I am attempting to show the UIImage within a scrollView, correctly scaled to show the entire image.

This is my code:

scrollView.pagingEnabled = YES;
scrollView.clipsToBounds = NO;

CGFloat contentOffset = 0.0f;

pageControl.numberOfPages = [imageArray count];
pageControl.currentPage = 0;

for(UIImage *image in imageArray)
{
    NSLog(@"image width = %f, image height = %f", image.size.width, image.size.height);

    CGRect imageViewFrame = CGRectMake(contentOffset, 0, scrollView.frame.size.width,                 scrollView.frame.size.height);

    UIImageView *imageView = [[UIImageView alloc] initWithFrame:imageViewFrame];
    [imageView setImage:image];
    [imageView setClipsToBounds:YES];
    [imageView setContentMode:UIViewContentModeScaleAspectFill];  //I've tried others, but nothing seems to show the entire image
    [scrollView addSubview:imageView];
    [imageView release];
    contentOffset += scrollView.frame.size.width;
    [scrollView setContentSize:CGSizeMake(contentOffset, 0)];
}

Just to note, this is a portrait-oriented app and the image itself was taken in portrait orientation.

The NSLog output:

image width = 387.200012, image height = 518.400024

The image that I see show up on the UIImageView (within the scrollview) is a zoomed up image of the center of the image, no matter what I change the contentmode to.

What am I doing wrong here? thank you!

Answer 1

The answer is what I had commented earlier: the scaling factor of the UIImage caused the ContentMode not to work. Or at least, made it seem not to work.