关键帧动画CAKeyframeAnimation

let anima: CAKeyframeAnimation = CAKeyframeAnimation(keyPath: "transform.translation.x")

let currentTx = self.centerHexaView.transform.tx

anima.duration = 1.2

anima.values = [currentTx, currentTx - 4.5, currentTx, currentTx + 4.5, currentTx]

anima.keyTimes = [0, 0.3, 0.6, 0.9, 1.2]

anima.timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseInEaseOut)

self.centerHexaView.layer.add(anima, forKey: "kAFViewShakerAnimationKey")