swift - swift cornerradius仅左下和右上？

急转弯半径问题

let path = UIBezierPath(roundedRect:username.bounds, byRoundingCorners:[.TopRight, .BottomLeft], cornerRadii: CGSizeMake(20, 20))
        let maskLayer = CAShapeLayer()
        maskLayer.path = path.CGPath
        username.layer.mask = maskLayer

Output

I Want

最佳答案

如果将要赋予角点的视图子类化，则可以这样做：

override func layoutSubviews() {
        super.layoutSubviews()

        maskLayer.frame = self.bounds
        maskLayer.path = UIBezierPath(roundedRect: bounds, byRoundingCorners: UIRectCorner.topLeft.union(.topRight), cornerRadii: CGSize(width: 25, height: 25)).cgPath
        self.layer.mask = maskLayer
    }

关于swift - swift cornerradius仅左下和右上？，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/38059065/