UIView影子,cornerradius不工作

Question

@IBOutlet weak var selectorSemiView: UIView!
@IBOutlet weak var blurEffect: UIVisualEffectView!
@IBOutlet var outerAreaRecognizer: UITapGestureRecognizer!
override func viewDidLoad() {
    super.viewDidLoad()
    selectorSemiView.layer.cornerRadius = 15
    selectorSemiView.layer.shadowColor = UIColor.gray.cgColor
    selectorSemiView.layer.shadowOffset = CGSize.zero
    selectorSemiView.layer.shadowRadius = 7

}

selectorSemiView是一个容器视图

当我运行这个应用程序时,没有阴影,也没有圆角.

我的代码有什么问题？

Answer 1

你的代码很好,但你忘了设置不透明度,如果你需要更多信息,你可以在SO中得到另一个答案,例如

 selectorSemiView.layer.cornerRadius = 15
    selectorSemiView.layer.shadowColor = UIColor.gray.cgColor
    selectorSemiView.layer.shadowOffset = CGSize.zero  
    selectorSemiView.layer.shadowOpacity = 1.0
    selectorSemiView.layer.shadowRadius = 7.0
    selectorSemiView.layer.masksToBounds =  false

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