iOS UIView 방향별 border 추가/삭제Permalink
iOS에서 Swift3로 UIView의 top, bottom, left, right 에 border 추가/삭제할 수 있는 코드.
extension을 이용하여, UIView에서 해당 함수를 접근할 수 있음.
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| extension UIView { | |
| // Example use: myView.addBorder(toSide: .Left, withColor: UIColor.redColor().CGColor, andThickness: 1.0) | |
| enum ViewSide: String { | |
| case Left = "Left", Right = "Right", Top = "Top", Bottom = "Bottom" | |
| } | |
| func addBorder(toSide side: ViewSide, withColor color: CGColor, andThickness thickness: CGFloat) { | |
| let border = CALayer() | |
| border.borderColor = color | |
| border.name = side.rawValue | |
| switch side { | |
| case .Left: border.frame = CGRect(x: 0, y: 0, width: thickness, height: frame.height) | |
| case .Right: border.frame = CGRect(x: frame.width - thickness, y: 0, width: thickness, height: frame.height) | |
| case .Top: border.frame = CGRect(x: 0, y: 0, width: frame.width, height: thickness) | |
| case .Bottom: border.frame = CGRect(x: 0, y: frame.height - thickness, width: frame.width, height: thickness) | |
| } | |
| border.borderWidth = thickness | |
| layer.addSublayer(border) | |
| } | |
| func removeBorder(toSide side: ViewSide) { | |
| guard let sublayers = self.layer.sublayers else { return } | |
| var layerForRemove: CALayer? | |
| for layer in sublayers { | |
| if layer.name == side.rawValue { | |
| layerForRemove = layer | |
| } | |
| } | |
| if let layer = layerForRemove { | |
| layer.removeFromSuperlayer() | |
| } | |
| } | |
| } |
참고: https://stackoverflow.com/a/32513578
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