swift-view任意位置添加边框线（实线，虚线）
2018-08-24 本文已影响416人
279cb620c509
废话不多说，直接代码
public struct UIRectSide : OptionSet {
public let rawValue: Int
public static let left = UIRectSide(rawValue: 1 << 0)
public static let top = UIRectSide(rawValue: 1 << 1)
public static let right = UIRectSide(rawValue: 1 << 2)
public static let bottom = UIRectSide(rawValue: 1 << 3)
public static let all: UIRectSide = [.top, .right, .left, .bottom]
public init(rawValue: Int) {
self.rawValue = rawValue;
}
}
extension UIView{
///画虚线边框
func drawDashLine(strokeColor: UIColor, lineWidth: CGFloat = 1, lineLength: Int = 10, lineSpacing: Int = 5, corners: UIRectSide) {
let shapeLayer = CAShapeLayer()
shapeLayer.bounds = self.bounds
shapeLayer.anchorPoint = CGPoint(x: 0, y: 0)
shapeLayer.fillColor = UIColor.blue.cgColor
shapeLayer.strokeColor = strokeColor.cgColor
shapeLayer.lineWidth = lineWidth
shapeLayer.lineJoin = kCALineJoinRound
//每一段虚线长度 和 每两段虚线之间的间隔
shapeLayer.lineDashPattern = [NSNumber(value: lineLength), NSNumber(value: lineSpacing)]
let path = CGMutablePath()
if corners.contains(.left) {
path.move(to: CGPoint(x: 0, y: self.layer.bounds.height))
path.addLine(to: CGPoint(x: 0, y: 0))
}
if corners.contains(.top){
path.move(to: CGPoint(x: 0, y: 0))
path.addLine(to: CGPoint(x: self.layer.bounds.width, y: 0))
}
if corners.contains(.right){
path.move(to: CGPoint(x: self.layer.bounds.width, y: 0))
path.addLine(to: CGPoint(x: self.layer.bounds.width, y: self.layer.bounds.height))
}
if corners.contains(.bottom){
path.move(to: CGPoint(x: self.layer.bounds.width, y: self.layer.bounds.height))
path.addLine(to: CGPoint(x: 0, y: self.layer.bounds.height))
}
shapeLayer.path = path
self.layer.addSublayer(shapeLayer)
}
///画实线边框
func drawLine(strokeColor: UIColor, lineWidth: CGFloat = 1, corners: UIRectSide) {
if corners == UIRectSide.all {
self.layer.borderWidth = lineWidth
self.layer.borderColor = strokeColor.cgColor
}else{
let shapeLayer = CAShapeLayer()
shapeLayer.bounds = self.bounds
shapeLayer.anchorPoint = CGPoint(x: 0, y: 0)
shapeLayer.fillColor = UIColor.blue.cgColor
shapeLayer.strokeColor = strokeColor.cgColor
shapeLayer.lineWidth = lineWidth
shapeLayer.lineJoin = kCALineJoinRound
let path = CGMutablePath()
if corners.contains(.left) {
path.move(to: CGPoint(x: 0, y: self.layer.bounds.height))
path.addLine(to: CGPoint(x: 0, y: 0))
}
if corners.contains(.top){
path.move(to: CGPoint(x: 0, y: 0))
path.addLine(to: CGPoint(x: self.layer.bounds.width, y: 0))
}
if corners.contains(.right){
path.move(to: CGPoint(x: self.layer.bounds.width, y: 0))
path.addLine(to: CGPoint(x: self.layer.bounds.width, y: self.layer.bounds.height))
}
if corners.contains(.bottom){
path.move(to: CGPoint(x: self.layer.bounds.width, y: self.layer.bounds.height))
path.addLine(to: CGPoint(x: 0, y: self.layer.bounds.height))
}
shapeLayer.path = path
self.layer.addSublayer(shapeLayer)
}
}
}
附：ios UIView 任意位置 裁剪 圆角
https://www.jianshu.com/p/8810ecb9500f
