Rounded Button in Swift

rounded button.swift

import UIKit

class RoundedButton: UIButton {

    // Only override drawRect: if you perform custom drawing.
    // An empty implementation adversely affects performance during animation.
    override func drawRect(rect: CGRect) {
        let maskPath = UIBezierPath.init(roundedRect: self.bounds, cornerRadius: 5)
        UIColor.clearColor().setFill()
        maskPath.fill()
        
        let maskLayer = CAShapeLayer()
        maskLayer.frame = self.bounds
        maskLayer.path = maskPath.CGPath
        self.layer.mask = maskLayer
    }
 
}