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左下、右下、および左上隅のテキストビューのみにcornerRadiusを設定する方法は？

コーナー半径を左下、右下、左上のみに設定するにはどうすればよいですか？

let rectShape = CAShapeLayer()
    rectShape.backgroundColor = UIColor.redColor().CGColor
    rectShape.bounds = messages.frame
    rectShape.position = messages.center
    rectShape.path = UIBezierPath(roundedRect: messages.bounds, byRoundingCorners: .BottomLeft | .TopRight, cornerRadii: CGSize(width: 20, height: 20)).CGPath

    messages.layer.addSublayer(rectShape)

このコードは2つの四角形を作成します。理由がわかりません。

swifttextviewrounded-corners
43
Zept

以下に示すように、レイヤーをマスクするだけです。

Swift 3の場合：

    let rectShape = CAShapeLayer()
    rectShape.bounds = self.myView.frame
    rectShape.position = self.myView.center
    rectShape.path = UIBezierPath(roundedRect: self.myView.bounds, byRoundingCorners: [.bottomLeft , .bottomRight , .topLeft], cornerRadii: CGSize(width: 20, height: 20)).cgPath

     self.myView.layer.backgroundColor = UIColor.green.cgColor
    //Here I'm masking the textView's layer with rectShape layer
     self.myView.layer.mask = rectShape

下位バージョン：

let rectShape = CAShapeLayer()
rectShape.bounds = self.myView.frame
rectShape.position = self.myView.center
rectShape.path = UIBezierPath(roundedRect: self.myView.bounds, byRoundingCorners: .BottomLeft | .BottomRight | .TopLeft, cornerRadii: CGSize(width: 20, height: 20)).CGPath

 self.myView.layer.backgroundColor = UIColor.greenColor().CGColor
//Here I'm masking the textView's layer with rectShape layer
 self.myView.layer.mask = rectShape
70
Shailesh Chandavar

（Swift 4/iOS 11）単に下に向かって言うだけです：

yourView.clipsToBounds = true 
yourView.layer.cornerRadius = 10
yourView.layer.maskedCorners = [.layerMaxXMaxYCorner, .layerMinXMaxYCorner]

アップ：

yourView.clipsToBounds = true 
yourView.layer.cornerRadius = 10
yourView.layer.maskedCorners = [.layerMaxXMinYCorner, .layerMinXMinYCorner]

あなたの場合：

yourView.layer.maskedCorners = [.layerMaxXMaxYCorner, .layerMinXMaxYCorner, .layerMinXMinYCorner]

このヘルプを願っています:)

105
Fabio

xcode 8およびSwift 3でテスト済み

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
  }
}

このように使用する

YourView.roundCorners([.topLeft, .bottomLeft], radius: 10)
53
Museer Ahamad Ansari

IOS 11とiOS 10の両方の下部コーナーのより良い答えは

 if #available(iOS 11.0, *){
        view.clipsToBounds = false
        view.layer.cornerRadius = 10
        view.layer.maskedCorners = [.layerMaxXMaxYCorner, .layerMinXMaxYCorner]
    }else{
       let rectShape = CAShapeLayer()
       rectShape.bounds = view.frame
       rectShape.position = view.center
       rectShape.path = UIBezierPath(roundedRect: view.bounds,    byRoundingCorners: [.bottomLeft , .bottomRight], cornerRadii: CGSize(width: 20, height: 20)).cgPath
      view.layer.backgroundColor = UIColor.green.cgColor
      view.layer.mask = rectShape
  }

これがiOS 10以下で動作しなかった場合は、このようなviewcontrollerクラスのviewDidLayoutSubviews（）でコードを実行してみてください

override func viewDidLayoutSubviews() {
    if #available(iOS 11.0, *){
    }else{
       let rectShape = CAShapeLayer()
       rectShape.bounds = view.frame
       rectShape.position = view.center
       rectShape.path = UIBezierPath(roundedRect: view.bounds,    byRoundingCorners: [.bottomLeft , .bottomRight], cornerRadii: CGSize(width: 20, height: 20)).cgPath
       view.layer.backgroundColor = UIColor.green.cgColor
       view.layer.mask = rectShape
}
18
king_T

Swift 4

override func viewDidLoad() {
    let topRight = UIView(frame: CGRect(x: 120, y: 200, width: 120, height: 120))
    topRight.roundedTop()
    topRight.backgroundColor = .red
    self.view.center = topRight.center
    self.view.addSubview(topRight)
    super.viewDidLoad()
}

出力：

enter image description here

uIView Swift 4の拡張機能： 参照リンク

8
Bhadresh

IOS 11以降の拡張機能は次のとおりです。

 import Foundation
 import UIKit

 extension UIView {

   func roundCorners(_ corners: CACornerMask, radius: CGFloat, borderColor: UIColor, borderWidth: CGFloat) {
       self.layer.maskedCorners = corners
       self.layer.cornerRadius = radius
       self.layer.borderWidth = borderWidth
       self.layer.borderColor = borderColor.cgColor

   }

 }

使用法：-

self.yourView.roundCorners([.layerMaxXMaxYCorner, .layerMaxXMinYCorner], radius: 20.0, borderColor: UIColor.green, borderWidth: 1)
4
Chathuranga Silva
  1. RoundedCornerView.Swiftファイルをプロジェクトに追加します
  2. UIControllerをViewControllerに追加します
  3. Identity InspectorのカスタムクラスをRoundedCornerViewに変更
  4. [属性インスペクター]に移動し、[角の半径（CGFloat）]を選択して、角を丸めたい角を選択します。

rounded corner view

RoundedCornerView.Swift

import UIKit

@IBDesignable
class RoundedCornerView: UIView {

    var cornerRadiusValue : CGFloat = 0
    var corners : UIRectCorner = []

    @IBInspectable public var cornerRadius : CGFloat {
        get {
            return cornerRadiusValue
        }
        set {
            cornerRadiusValue = newValue
        }
    }

    @IBInspectable public var topLeft : Bool {
        get {
            return corners.contains(.topLeft)
        }
        set {
            setCorner(newValue: newValue, for: .topLeft)
        }
    }

    @IBInspectable public var topRight : Bool {
        get {
            return corners.contains(.topRight)
        }
        set {
            setCorner(newValue: newValue, for: .topRight)
        }
    }

    @IBInspectable public var bottomLeft : Bool {
        get {
            return corners.contains(.bottomLeft)
        }
        set {
            setCorner(newValue: newValue, for: .bottomLeft)
        }
    }

    @IBInspectable public var bottomRight : Bool {
        get {
            return corners.contains(.bottomRight)
        }
        set {
            setCorner(newValue: newValue, for: .bottomRight)
        }
    }

    func setCorner(newValue: Bool, for corner: UIRectCorner) {
        if newValue {
            addRectCorner(corner: corner)
        } else {
            removeRectCorner(corner: corner)
        }
    }

    func addRectCorner(corner: UIRectCorner) {
        corners.insert(corner)
        updateCorners()
    }

    func removeRectCorner(corner: UIRectCorner) {
        if corners.contains(corner) {
            corners.remove(corner)
            updateCorners()
        }
    }

    func updateCorners() {
        let path = UIBezierPath(roundedRect: self.bounds, byRoundingCorners: corners, cornerRadii: CGSize(width: cornerRadiusValue, height: cornerRadiusValue))
        let mask = CAShapeLayer()
        mask.path = path.cgPath
        self.layer.mask = mask
    }

}

githubリンク： RoundedCornerView

2
kazi.munshimun

問題は右上と右下の作業を解決しました

IOS 9、10、11バージョンでテストされたコード

 extension UIView {
        func roundCorners(_ corners:UIRectCorner,_ cormerMask:CACornerMask, radius: CGFloat) {
            if #available(iOS 11.0, *){
                self.clipsToBounds = false
                self.layer.cornerRadius = radius
                self.layer.maskedCorners = cormerMask
            }else{
                let rectShape = CAShapeLayer()
                rectShape.bounds = self.frame
                rectShape.position = self.center
                rectShape.path = UIBezierPath(roundedRect: self.bounds,    byRoundingCorners: corners, cornerRadii: CGSize(width: radius, height: radius)).cgPath
                self.layer.mask = rectShape
            }
        }

    }
0
Harshil Kotecha