Autolayout UIImageView without image

Question

I have a UIImageView, with scaling Center, so it's size changes according to the UIImage inside, however, by setting a nil UIImage, the constraints break, as no content size can be calculated

How to handle the autolayout with nil UIImage (the size should be changed to 0,0)?

Answer 1

The problem is that UIImageView returns {-1, -1} as intrinsicContentSize when no image is set. Use subclass of UIImageView with implementation like this:

@implementation MyImageView

- (CGSize)intrinsicContentSize
{
    if (self.image)
    {
        return [super intrinsicContentSize];
    }

    return CGSizeZero;
}

@end