如何為UIView的左上角和右上角設置角半徑？有沒有辦法cornerRadius的左上角和右上角UIView?我試過以下幾種方法，但最后都看不到風景了。UIView *view = [[UIView alloc] initWithFrame:frame];CALayer *layer = [CALayer layer];UIBezierPath *shadowPath = [UIBezierPath bezierPathWithRoundedRect:frame byRoundingCorners:(UIRectCornerTopLeft|UIRectCornerTopRight) cornerRadii:CGSizeMake(3.0, 3.0)];layer.shadowPath = shadowPath.CGPath;view.layer.mask = layer;
3 回答
森林海
TA貢獻2011條經驗 獲得超2個贊
SWIFT 4
override func layoutSubviews() {
super.layoutSubviews()
roundCorners(corners: [.topLeft, .topRight], radius: 3.0)}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 }}
收到一只叮咚
TA貢獻1821條經驗 獲得超5個贊
我不知道為什么您的解決方案不起作用，但下面的代碼對我有用。創建一個Bezier掩碼并將其應用到您的視圖中。在下面的代碼中，我正在舍入_backgroundView半徑為3像素。self是一種習俗UITableViewCell:
UIBezierPath?*maskPath?=?[UIBezierPath ????bezierPathWithRoundedRect:self.backgroundImageView.bounds ????byRoundingCorners:(UIRectCornerBottomLeft?|?UIRectCornerBottomRight) ????cornerRadii:CGSizeMake(20,?20)];CAShapeLayer?*maskLayer?=?[CAShapeLayer?layer];maskLayer.frame?=?self.bounds;maskLayer.path?=?maskPath.CGPath;self.backgroundImageView.layer.mask?=?maskLayer;
有一些改進的SWIFT版本：
let?path?=?UIBezierPath(roundedRect:viewToRound.bounds,?byRoundingCorners:[.TopRight,?.BottomLeft],?cornerRadii:?CGSizeMake(20,?20))let?maskLayer?=?CAShapeLayer()maskLayer.path?=?path.CGPathviewToRound.layer.mask?=?maskLayer
SWIFT 3.0版本：
let?path?=?UIBezierPath(roundedRect:viewToRound.bounds, ????????????????????????byRoundingCorners:[.topRight,?.bottomLeft], ????????????????????????cornerRadii:?CGSize(width:?20,?height:??20))let?maskLayer?=?CAShapeLayer()maskLayer.path?=?path.cgPath viewToRound.layer.mask?=?maskLayer
四季花海
TA貢獻1811條經驗 獲得超5個贊
extension UIView {
func roundCorners(_ 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 }}view.roundCorners([.topLeft, .bottomRight], radius: 10)
注
UIViewroundCornerslayoutSubviews
class View: UIView {
override func layoutSubviews() {
super.layoutSubviews()
self.roundCorners([.topLeft, .bottomLeft], radius: 10)
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