我有一个 UIView
并为其设置了一个 shadowPath
,如下所示:
func addShadow() {
let cornerRadius: CGFloat = self.containerView.frame.height/2
self.containerView.layer.shadowPath = UIBezierPath(roundedRect: self.containerView.frame, cornerRadius: cornerRadius).cgPath
self.containerView.layer.shadowRadius = cornerRadius
self.containerView.layer.shadowOffset = .zero
self.containerView.layer.shadowOpacity = 0.2
self.containerView.layer.cornerRadius = cornerRadius
self.containerView.layer.shadowColor = UIColor(named: "whiteColor")?.cgColor
}
这是白色
:
现在我的问题是
When I change the appearance of the phone, the
shadowPath
's color doesn't change automatically. What should I do to make the color dynamic?
最佳答案
所有图层属性不会自动对颜色变化使用react(由于转换为 CGColor
)。
相反,当颜色外观发生变化时,对特征集合更改使用react并重新设置属性:
override open func traitCollectionDidChange(_ previousTraitCollection: UITraitCollection?) {
super.traitCollectionDidChange(previousTraitCollection)
if #available(iOS 13, *), self.traitCollection.hasDifferentColorAppearance(comparedTo: previousTraitCollection) {
// re-set your properties here
}
}
关于ios - UIView的shadowpath颜色没有改变,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/58583349/