1，CAKeyframeAnimation介绍
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// // ViewController.swift // CAKeyframeAnimation // // Created by Wengrp on 16/12/1. // Copyright © 2016年 wengrenpu. All rights reserved. //
import UIKit
class ViewController: UIViewController {
var imageView: UIView!
override func viewDidLoad() { super.viewDidLoad() // Do any additional setup after loading the view. let animation = CAKeyframeAnimation(keyPath: "position")
//设置5个位置点 let p1 = CGPointMake(100.0, 100.0) let p2 = CGPointMake(300, 100.0) let p3 = CGPointMake(100.0, 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 = self animation.duration = 6.0
imageView = UIView(frame: CGRectMake(100, 100, 100, 100)) imageView.backgroundColor = UIColor.cyanColor() imageView.layer.addAnimation(animation, forKey: "Image-Move") self.view.addSubview(imageView) }
override func animationDidStart(anim: CAAnimation) { print("动画开始") }
override func animationDidStop(anim: CAAnimation, finished flag: Bool) { print("动画结束") }
override func didReceiveMemoryWarning() { super.didReceiveMemoryWarning() // Dispose of any resources that can be recreated. } } |
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")} |