Ios 我想在Swift中的ScrollView内的底部创建UIView圆形形状

不在顶部边缘。我想这样做的底部边缘和内部滚动视图。

---

如何执行此操作创建扩展，如下所示

extension UIView {

    func round(corners: UIRectCorner, cornerRadius: Double) {

        let size = CGSize(width: cornerRadius, height: cornerRadius)
        let bezierPath = UIBezierPath(roundedRect: self.bounds, byRoundingCorners: corners, cornerRadii: size)
        let shapeLayer = CAShapeLayer()
        shapeLayer.frame = self.bounds
        shapeLayer.path = bezierPath.cgPath
        self.layer.mask = shapeLayer
    }
}

你可以这样使用它

self.myView.round(corners: [.bottomLeft, .bottomRight], cornerRadius: 35)

我希望它对你有用…：

extension UIView { 
    func roundCorners(corners: UIRectCorner, radius: CGFloat) {
        let path = UIBezierPath(roundedRect: bounds, byRoundingCorners: corners, cornerRadii: CGSize(width: radius, height: radius))
        let mask = CAShapeLayer()
        mask.path = path.cgPath
        layer.mask = mask
    }
}

把它当作

yourView.roundCorners(corners : [.bottomLeft, .bottomRight], radius : 20 )

另外，在viewDidLayoutSubviews中更新布局，否则您可能会在soem设备中面临剪裁

在视图层上配置遮罩角和拐角半径，即

---

这应该接近你想要的。如果贝塞尔路径点不太正确，请使用它：

@IBDesignable
class MyRoundBottomView: UIView {

    override func layoutSubviews() {
        super.layoutSubviews()

        let y = bounds.size.height - 80.0

        let p1 = CGPoint(x: 0.0, y: y)
        let p2 = CGPoint(x: bounds.size.width, y: y)

        let cp1 = CGPoint(x: p1.x, y: bounds.size.height)
        let cp2 = CGPoint(x: bounds.size.width, y: bounds.size.height)

        let myBez = UIBezierPath()

        myBez.move(to: CGPoint(x: 0.0, y: y))

        myBez.addCurve(to: p2, controlPoint1: cp1, controlPoint2: cp2)

        myBez.addLine(to: CGPoint(x: bounds.size.width, y: 0.0))
        myBez.addLine(to: CGPoint.zero)

        myBez.close()

        let l = CAShapeLayer()
        l.path = myBez.cgPath
        layer.mask = l

    }

}

它被标记为@IBDesignable，因此您可以在故事板中添加UIView，并将其自定义类指定给MyRoundBottomView，您将在设计时看到它：

---

检查这个链接-这是为我工作的视图在内部滚动视图也。谢谢兄弟

@IBDesignable
class MyRoundBottomView: UIView {

    override func layoutSubviews() {
        super.layoutSubviews()

        let y = bounds.size.height - 80.0

        let p1 = CGPoint(x: 0.0, y: y)
        let p2 = CGPoint(x: bounds.size.width, y: y)

        let cp1 = CGPoint(x: p1.x, y: bounds.size.height)
        let cp2 = CGPoint(x: bounds.size.width, y: bounds.size.height)

        let myBez = UIBezierPath()

        myBez.move(to: CGPoint(x: 0.0, y: y))

        myBez.addCurve(to: p2, controlPoint1: cp1, controlPoint2: cp2)

        myBez.addLine(to: CGPoint(x: bounds.size.width, y: 0.0))
        myBez.addLine(to: CGPoint.zero)

        myBez.close()

        let l = CAShapeLayer()
        l.path = myBez.cgPath
        layer.mask = l

    }

}