Ios 如何在同一UIView中添加阴影和CAShapeLayer

我试图在视图的左下角和右下角添加6px半径

innerView

，并在整个

innerView

中添加阴影<代码>内部视图包含在名为

view2

的视图中

我能让它工作的唯一方法是使用以下代码：

let containerLayer = CALayer()
containerLayer.shadowColor = UIColor.blackColor().CGColor
containerLayer.shadowOffset = CGSizeMake(1, 2)
containerLayer.shadowOpacity = 0.2
containerLayer.shadowRadius = 2

let maskPath = UIBezierPath(roundedRect: innerView.bounds, byRoundingCorners: UIRectCorner.BottomLeft.union(.BottomRight), cornerRadii: CGSize(width: 6, height: 6)).CGPath

let maskLayer = CAShapeLayer()
maskLayer.path = maskPath
innerView.layer.mask = maskLayer
containerLayer.addSublayer(innerView.layer)
view2.layer.addSublayer(containerLayer)

---

但是，由于

view2

实际上是

UITableViewCell

的contentView，因此在拖动

containerLayer

时，此代码禁止滚动

UITableView

。

如果您使用的是自动布局，请删除UIBezierPath。请尝试此代码并为自己定制一个： //此代码用于自定义阴影和角半径为6的视图

let shadowLayer: CALayer = shadowView.layer
        shadowView.clipsToBounds = false
        shadowLayer.shadowColor = 'your color'
        shadowLayer.shadowOffset = CGSizeZero
        shadowLayer.shadowOpacity = 1
        shadowLayer.shadowRadius = 3
        shadowLayer.shouldRasterize = true

        let innerLayer: CALayer = innerView.layer
        innerLayer.cornerRadius = 6
        innerView.clipsToBounds = true
        innerLayer.borderColor = 'your color'.CGColor
        innerLayer.borderWidth = 1

---

“innerView”位于“shadowView”（在我的xib文件上）内。

如果您使用的是Autolayout，请删除UIBezierPath。请尝试此代码并为自己定制一个： //此代码用于自定义阴影和角半径为6的视图

let shadowLayer: CALayer = shadowView.layer
        shadowView.clipsToBounds = false
        shadowLayer.shadowColor = 'your color'
        shadowLayer.shadowOffset = CGSizeZero
        shadowLayer.shadowOpacity = 1
        shadowLayer.shadowRadius = 3
        shadowLayer.shouldRasterize = true

        let innerLayer: CALayer = innerView.layer
        innerLayer.cornerRadius = 6
        innerView.clipsToBounds = true
        innerLayer.borderColor = 'your color'.CGColor
        innerLayer.borderWidth = 1

---

“innerView”位于“shadowView”（在我的xib文件上）中。

通过在另一个视图中嵌入

innerView

解决了这个问题。我将阴影应用于新视图，将半径应用于

内部视图

：

func addShadowTo(shadowView: UIView, andRadiusTo radiusView: UIView) {
     let maskPath = UIBezierPath(roundedRect: radiusView.bounds, byRoundingCorners: UIRectCorner.BottomLeft.union(.BottomRight), cornerRadii: CGSize(width: 6, height: 6)).CGPath
    shadowView.layer.shadowPath = maskPath
    shadowView.layer.shadowColor = UIColor.blackColor().CGColor
    shadowView.layer.shadowOffset = CGSizeMake(1, 2)
    shadowView.layer.shadowOpacity = 0.2
    shadowView.layer.shadowRadius = 2

    let maskLayer = CAShapeLayer()
    maskLayer.path = maskPath
    radiusView.layer.mask = maskLayer
}

---

通过在另一个视图中嵌入

innerView

解决了这个问题。我将阴影应用于新视图，将半径应用于

内部视图

：

func addShadowTo(shadowView: UIView, andRadiusTo radiusView: UIView) {
     let maskPath = UIBezierPath(roundedRect: radiusView.bounds, byRoundingCorners: UIRectCorner.BottomLeft.union(.BottomRight), cornerRadii: CGSize(width: 6, height: 6)).CGPath
    shadowView.layer.shadowPath = maskPath
    shadowView.layer.shadowColor = UIColor.blackColor().CGColor
    shadowView.layer.shadowOffset = CGSizeMake(1, 2)
    shadowView.layer.shadowOpacity = 0.2
    shadowView.layer.shadowRadius = 2

    let maskLayer = CAShapeLayer()
    maskLayer.path = maskPath
    radiusView.layer.mask = maskLayer
}

---

Swift 4:

该代码帮助我在UIVIEW中添加阴影，并使用UIBezierPath添加CornerRadious。将视图的背景色设置为

ClearColor

    yourView.backgroundColor=UIColor.clear 
    let path1 = UIBezierPath(roundedRect:yourView.bounds,
                            byRoundingCorners:[.topRight, .bottomLeft],
                            cornerRadii: CGSize(width: 20, height:  20))

    let maskLayer1 = CAShapeLayer()
    maskLayer1.path = path1.cgPath
    maskLayer1.fillColor = UIColor.white.cgColor
    maskLayer1.shadowColor = UIColor.darkGray.cgColor
    maskLayer1.shadowPath = maskLayer1.path
    maskLayer1.shadowOffset = CGSize(width: 0.0, height: 2.0)
    maskLayer1.shadowOpacity = 0.6
    maskLayer1.shadowRadius = 2
    yourView.layer.insertSublayer(maskLayer1, at: 0)

---

Swift 4:

该代码帮助我在UIVIEW中添加阴影，并使用UIBezierPath添加CornerRadious。将视图的背景色设置为

ClearColor

    yourView.backgroundColor=UIColor.clear 
    let path1 = UIBezierPath(roundedRect:yourView.bounds,
                            byRoundingCorners:[.topRight, .bottomLeft],
                            cornerRadii: CGSize(width: 20, height:  20))

    let maskLayer1 = CAShapeLayer()
    maskLayer1.path = path1.cgPath
    maskLayer1.fillColor = UIColor.white.cgColor
    maskLayer1.shadowColor = UIColor.darkGray.cgColor
    maskLayer1.shadowPath = maskLayer1.path
    maskLayer1.shadowOffset = CGSize(width: 0.0, height: 2.0)
    maskLayer1.shadowOpacity = 0.6
    maskLayer1.shadowRadius = 2
    yourView.layer.insertSublayer(maskLayer1, at: 0)

---

这在所有的角上都给出了半径，但是，我只希望它在左下角和右下角上-这就是为什么我使用贝塞尔路径。这在所有的角上都给出了半径，但是，我只希望它在左下角和右下角上-这就是为什么我使用贝塞尔路径。