Button Pop Animation with CABasicAnimation written in Swift

ButtonAnimationSample.swift

// Button Animation
@IBAction func pushButton(button: UIButton) {
    // CABasicAnimation
    let animation = CABasicAnimation(keyPath: "transform")
    animation.timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseInEaseOut)
    animation.duration = 0.05
    animation.repeatCount = 1
    animation.autoreverses = true
    animation.removedOnCompletion = true
    animation.toValue = NSValue(CATransform3D: CATransform3DMakeScale(1.1, 1.1, 1.0))
    button.layer.addAnimation(animation, forKey: nil)
}