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CALayer {
func addGradientBorder(colors: [UIColor], width: CGFloat = 1, cornerRadius: CGFloat = 30) -> CALayer {
let gradientLayer = CAGradientLayer()
gradientLayer.frame = CGRect(origin: CGPoint.zero, size:
self.bounds.size)
gradientLayer.startPoint = CGPoint(x: 0.0, y: 0.0)
gradientLayer.endPoint = CGPoint(x: 1.0,y: 1.0)
gradientLayer.colors = colors.map({$0.cgColor})
let shapeLayer = CAShapeLayer()
shapeLayer.lineWidth = width
shapeLayer.path = UIBezierPath(roundedRect:
self.bounds, cornerRadius: cornerRadius).cgPath
shapeLayer.fillColor =
nil
shapeLayer.strokeColor = UIColor.red.cgColor
gradientLayer.mask = shapeLayer
self.addSublayer(gradientLayer)
return gradientLayer
}
}
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