Uibutton Doesn't Listen to Content Mode Setting

UIButton doesn't listen to content mode setting?

I had the same problem. I see this question is a little old, but I want to provide a clear and correct answer to save other folks (like me) some time when it pops up in their search results.

It took me a bit of searching and experimenting, but I found the solution. Simply set the ContentMode of the "hidden" ImageView that is inside the UIButton.

[[firstButton imageView] setContentMode: UIViewContentModeScaleAspectFit];
[firstButton setImage:[UIImage imageNamed:imageName] forState:UIControlStateNormal];

Perhaps that's what Dan Ray was alluding to in his accepted answer, but I suspect not.

UIButton with the imageView set to UIViewContentModeScaleAspectFill doesn't fill completely with small images

Setting contentHorizontalAlignment and contentVerticalAlignment to .Fill on the UIButton makes it extend fully.

UIButton image behavior changed in iOS 15?

Is this a change in iOS 15?

Yes and no. There is indeed a change in iOS 15, but the reason for the problem you're experiencing is a change in Xcode 13.

The change in iOS 15 is that there's a whole new way of configuring a button. This starts with giving the button one of four new iOS 15 types: Plain, Gray, Tinted, and Filled. If you set your button to have any of those types, you are opting in to the new behavior.

The problem you're seeing is because, in Xcode 13, when you make a button in the storyboard, it does give the button one of those types: Plain. So you have opted into the new dispensation without knowing it!

The solution, if you want the old behavior, is to change the Style pop-up menu (in the Attributes inspector) from Plain to Default. Now you have an old-style button and it will behave in the way you're accustomed to.

(Of course, in the long run, you're going to want to adopt the new dispensation. I'm just explaining the apparent change in behavior.)

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