AspectFill无法填充UIImageView

Question

I have a button that has contentMode set to UIViewContentModeScaleAspectFill . I set it like this:

self.itemImage.imageView.contentMode = UIViewContentModeScaleAspectFill;

I also set it to Mode - Aspect Fill in IB for the button, just in case. And when I set the image, I DON'T set is as a background image:

[self.itemImage setImage:image forState:UIControlStateNormal];

However, occasionally my image does not fill the button (which I want it to do), like in this case:

See grey spaces on each side. Occurs on both iOS 6 and 7.

Any ideas?

Answer 1

At long last, I managed to find the solution that works in Alfie's answer to this SO question .

In short, if your UIButton (or its hidden imageView ) does not respond to contentMode , use this code:

self.button.contentHorizontalAlignment = UIControlContentHorizontalAlignmentFill;
self.button.contentVerticalAlignment = UIControlContentVerticalAlignmentFill;