图像视图的圆底线

Question

我只希望 imageView 的底部边框是圆形的。我如何以编程方式执行此操作？

感谢您的帮助！

Answer 1

您可以通过子类化 UIImageView 来做到这一点：

import UIKit
class CustomImageView: UIImageView {

override public func layoutSubviews() {
    super.layoutSubviews()
    self.roundUpCorners([.bottomLeft, .bottomRight], radius: 30)
}
}
extension UIView {
func roundUpCorners(_ corners: UIRectCorner, radius: CGFloat) {
    let path = UIBezierPath(roundedRect: self.bounds, byRoundingCorners: corners, cornerRadii: CGSize(width: radius, height: radius))
    let mask = CAShapeLayer()
    mask.path = path.cgPath
    self.layer.mask = mask
}
}

结果将是这样的：

图像视图的圆底线

Round bottom line of an image view

image

layer

ios

swift