Why does a custom UIButton image not resize with the button?
I set its view mode to Scale to Fill in Interface Builder, but unlike a UIImageView image, it doesn't respect that setting.
Am I looking in the wrong place or is it not possible?
11 Answers
Inside Attribute Inspector first set Type "Custom" and Style "Default" then Set alignment Horizontal and Vertical both "fill".
Updating this post will full answer for Swift 5:
//Set button's image
let image = UIImage(systemName: "heart.fill") //Your image here
button.setImage(image, for: .normal)
//Optional: Remove background image if you added one on accident
button.setBackgroundImage(nil, for: .normal)
//Optional: Set button's title (displayed next to button's image)
button.setTitle(nil, for: .normal)
//The button's "content" includes the title label and image
//So we set the button's content to fill the button
//If title label is nil, the content will only show the image
button.contentVerticalAlignment = .fill
button.contentHorizontalAlignment = .fill
//Set button's image to desired content mode (aspectFit avoids distortion)
//This restricts the image from resizing to fill the entire content area
button.imageView?.contentMode = .scaleAspectFit
Try setting the Clip subviews property in Interface Builder to true.
Hope that helps.
Just get a real UIimageview and place a UIbutton on top of it and via layout menu set it to back. Then you can scale your image properly.
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