import UIKitclass LolitaCircleButton: UIButton {        private var color: UIColor    private var imageURL: String        init(color: UIColor , imageURL: String) {        self.color = color        self.imageURL = imageURL        super.init(frame: CGRectZero)                commonInit()        layer.shadowOpacity = 0.3        layer.shadowOffset = CGSize(width: 0.0, height: 0.0)        layer.shadowRadius = 15    }        func commonInit() {        setImage(UIImage(named: self.imageURL)?.imageWithColor(self.color), forState: .Highlighted)        setImage(UIImage(named: self.imageURL), forState: .Normal)    }        required init?(coder aDecoder: NSCoder) {        fatalError("init(coder:) has not been implemented")    }        override func drawRect(rect: CGRect) {        super.drawRect(rect)        let path = UIBezierPath(ovalInRect: rect)        color.setFill()        path.fill()    }        override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {        super.touchesBegan(touches, withEvent: event)                color = UIColor.whiteColor()        setNeedsDisplay()                UIView.animateWithDuration(0.15) {            self.transform = CGAffineTransformMakeScale(0.9, 0.9)        }    }        override func touchesEnded(touches: Set<UITouch>, withEvent event: UIEvent?) {        super.touchesEnded(touches, withEvent: event)                color = UIColor.orangeColor()        setNeedsDisplay()                transform = CGAffineTransformMakeScale(0.0, 0.0)                UIView.animateWithDuration(0.4, delay: 0, usingSpringWithDamping: 0.7, initialSpringVelocity: 0.5, options: [], animations: {            self.transform = CGAffineTransformIdentity            }, completion: nil)    }    }