UIButton 中的 AspectFit 图像 [英] AspectFit image inside an UIButton

问题描述

我有一个看起来像这样的图像

I have an image looking like this

但它应该是这样的:

But it should look like this :

我添加了以下行:cameraUIButton.imageView?.contentMode = .scaleAspectFit

它不起作用但是如果我点击它适合的按钮！！当您单击重新计算图像适合度的按钮时，会在 swift 中附加什么?

我已经试过了

It doesn't works BUT if i click on the button it fit !! What append in swift when you click on the button that recalculate the fit of the image ?

I already tried

        cameraUIButton.setNeedsDisplay()
        cameraUIButton.imageView?.setNeedsDisplay()
        cameraUIButton.imageView?.layoutIfNeeded()
        cameraUIButton.layoutIfNeeded()
        self.view.layoutIfNeeded()

以及全部

viewDidLoad()
viewWillAppear()
viewDidAppear()

点击按钮没有任何作用，我还能尝试什么?

Nothing do what cliking on the button do, what else could i try ?

推荐答案

我找到了解决方案！！
您需要添加

cameraUIButton.imageView?.adjustsImageSizeForAccessibilityContentSizeCategory = true

所以在按钮内进行aspectFit矢量图像的完整代码是:

So the full code to aspectFit a vector image inside a button is :

cameraUIButton.imageView?.contentMode = .scaleAspectFit
cameraUIButton.imageView?.adjustsImageSizeForAccessibilityContentSizeCategory = true

我不知道为什么它不是 true 默认情况下，因为如果您单击按钮或动画它会转向它.

I don't know why it's not trueby default as it's turned to it if you click on the button or if you animate it.

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