我的CAShapeLayer
只有圆角。我想要的是在底部添加阴影,但它不起作用,即使代码看起来很明显。所有这一切都围绕着底角,但我没有看到阴影。
let shapeLayer = CAShapeLayer()
let path = UIBezierPath(roundedRect: self.bounds, byRoundingCorners: [.bottomLeft, .bottomRight], cornerRadii: CGSize(width: 20, height: 20)).cgPath
shapeLayer.path = path
shapeLayer.shadowColor = UIColor(r: 233, g: 233, b: 233).cgColor
shapeLayer.shadowOffset = CGSize(width: 0.0, height: 2.8)
shapeLayer.shadowOpacity = 1.0
shapeLayer.shadowRadius = 0.0
shapeLayer.shouldRasterize = true
shapeLayer.rasterizationScale = UIScreen.main.scale
layer.rasterizationScale = UIScreen.main.scale
layer.mask = shapeLayer
答案 0 :(得分:2)
shapeLayer
正在围绕视角,因为它被设置为图层的蒙版。您可能希望将其添加为子图层。
<强>旧
layer.mask = shapeLayer
新
layer.addSublayer(shapeLayer)
我写了另一个答案,如果有帮助的话,可以在圆角的视图中添加阴影:https://stackoverflow.com/a/41475658/6658553
答案 1 :(得分:0)
另一种解决方案,
以下UIView扩展将与您使用其遮罩视图的任何形状一起使用
extension UIView {
func addShadow() {
self.backgroundColor = UIColor.clear
let roundedShapeLayer = CAShapeLayer()
let roundedMaskPath = UIBezierPath(roundedRect: self.bounds,
byRoundingCorners: [.topLeft, .bottomLeft, .bottomRight],
cornerRadii: CGSize(width: 8, height: 8))
roundedShapeLayer.frame = self.bounds
roundedShapeLayer.fillColor = UIColor.white.cgColor
roundedShapeLayer.path = roundedMaskPath.cgPath
self.layer.insertSublayer(roundedShapeLayer, at: 0)
self.layer.shadowOpacity = 0.4
self.layer.shadowOffset = CGSize(width: -0.1, height: 4)
self.layer.shadowRadius = 3
self.layer.shadowColor = UIColor.lightGray.cgColor
}
}