1，CAKeyframeAnimation介绍
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let animation = CAKeyframeAnimation(keyPath: "position")//设置5个位置点let p1 = CGPointMake(0.0, 0.0)let p2 = CGPointMake(300, 0.0)let p3 = CGPointMake(0.0, 400)let p4 = CGPointMake(300, 400)let p5 = CGPointMake(150, 200)//赋值animation.values = [NSValue(CGPoint: p1), NSValue(CGPoint: p2), NSValue(CGPoint: p3), NSValue(CGPoint: p4), NSValue(CGPoint: p5)]//每个动作的时间百分比animation.keyTimes = [NSNumber(float: 0.0), NSNumber(float: 0.4), NSNumber(float: 0.6), NSNumber(float: 0.8), NSNumber(float: 1.0), ]animation.delegate = selfanimation.duration = 6.0self.imageView.layer.addAnimation(animation, forKey: "Image-Move") |
3，可以设置动画代理，监听开始和结束动作
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animation.delegate = selfoverride func animationDidStart(anim: CAAnimation!) { println("动画开始")}override func animationDidStop(anim: CAAnimation!, finished flag: Bool) { println("动画结束")} |
Swift - 使用CAKeyframeAnimation实现关键帧动画
原文：http://www.cnblogs.com/Free-Thinker/p/4843451.html