xcode Swift 如何在堆栈视图中调整图像大小
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Swift How to resize an image inside a stackview
提问by pprevalon
I have 2 items in a stack view one is an image and the other is a label. I want the image to resize according to its frame size not the size of stack how can i change this.
我在堆栈视图中有 2 个项目，一个是图像，另一个是标签。我希望图像根据其帧大小而不是堆栈大小调整大小，我该如何更改。
//stack code
lazy var releaseInfoStack:UIStackView = {
let v = UIStackView()
v.translatesAutoresizingMaskIntoConstraints = false
v.spacing = 4
v.alignment = .center
v.axis = .horizontal
return v
}()
//my image
lazy var smallRealeaseImageIcon:UIImageView = {
let v = UIImageView(frame:CGRect(x: 0, y: 0, width: 17, height: 17))
v.contentMode = .scaleAspectFit
v.image = UIImage(named: "link")
return v
}()
//this is the current image below but i want the link icon to be smaller
回答by orxelm
You can add constraints for height and width:
您可以为高度和宽度添加约束：
let imageViewWidthConstraint = NSLayoutConstraint(item: smallRealeaseImageIcon, attribute: .width, relatedBy: .equal, toItem: nil, attribute: .notAnAttribute, multiplier: 1, constant: 20)
let imageViewHeightConstraint = NSLayoutConstraint(item: smallRealeaseImageIcon, attribute: .height, relatedBy: .equal, toItem: nil, attribute: .notAnAttribute, multiplier: 1, constant: 20)
smallRealeaseImageIcon.addConstraints([imageViewWidthConstraint, imageViewHeightConstraint])
Just make sure to set the stackview's distribution to proportionally:
只需确保将堆栈视图的分布按比例设置：
releaseInfoStack.distribution = .fillProportionally
