UIButton won't go to Aspect Fit in iPhone

Question

I have a couple UIButtons, and in IB they\'re set to Aspect Fit, but for some reason they\'re always stretching. Is there something else you have to set? I tried all the d

Answer 1

Combining together a few different answers into one solution-- create a button with a custom type, set the button's imageView contentMode property, and set the image for the button (not the background image, which will still scale to fill).

//Objective-C:
UIImage *image = [UIImage imageNamed:"myImageName.png"];
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
[button setImage:image forState:UIControlStateNormal];
button.imageView.contentMode = UIViewContentModeScaleAspectFit;

//Swift:
let image = UIImage(named: "myImageName.png")
let button = UIButton(type: .custom)
button.imageView?.contentMode = .scaleAspectFit
button.setImage(image, for: .normal)

Answer 2

I had problems with the image not resizing proportionately so the way I fixed it was using edge insets.

fooButton.contentEdgeInsets = UIEdgeInsetsMake(10, 15, 10, 15);

Answer 3

This overlaps many of the other answers, but the solution for me was to

• set the contentMode of the UIImageView for the button to .ScaleAspectFit – which can either be done in the ”User Defined Runtime Attributes” in Interface Builder (ie. self.imageView.contentMode, Number, 1) or in a UIButton subclass;
• disable ”Autoresize Subviews”;
• set ”Edge” to ”Image” and appropriate ”Top” and ”Bottom” values for ”Inset” (which might only be needed if you, like me, used a PDF as image).