动画总结

//
//  ViewController.swift
//  动画总结
//
//  Created by admin on 16/1/29.
//  Copyright © 2016年 jin. All rights reserved.
//

import UIKit

class ViewController: UIViewController {

    @IBOutlet weak var image: UIImageView!
    override func viewDidLoad() {
        super.viewDidLoad()
        // 控件的center和控件layer的position是默认相等的
        print(self.image.center)
        // anchorPoint相对于上级layer的坐标，注意anchorPoint和position的互相影响
        print(self.image.layer.position)
        print(self.image.layer.anchorPoint)
    }
    override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
        self.animationD()
    }
    // 核心动画,需要知道的事，动画改编的position是假象，其实值并没有改变，只是看上去变了
    func animationD()
    {
        let animation = CABasicAnimation(keyPath: "position")
        animation.duration = 3
        animation.delegate = self
        self.image.layer.position = CGPointMake(100, 100)
        print("开始时的position")
        print(self.image.layer.position)
        self.image.layer.addAnimation(animation, forKey: nil)
    }
    override func animationDidStop(anim: CAAnimation, finished flag: Bool) {
        print("结束时的position")
        print(self.image.layer.position)
    }
    // 这个好。。
    func animationC()
    {
        UIView.transitionWithView(self.image, duration: 3, options: UIViewAnimationOptions.TransitionCurlDown, animations: {
                self.image.image = UIImage(imageLiteral: "2")
            }, completion: {
                _ in
            print("动画执行完成")
        })
    }
    //
    func animationB()
    {
        UIView.animateWithDuration(3, animations: {
            // 切换图片没有动态
            self.image.center = CGPointMake(100, 100)
        })
    }
    // UIView动画
    func animationA()
    {
        UIView.beginAnimations(nil, context: nil)
        // 设置事件
        UIView.setAnimationDuration(3)
        // 设置代理
        UIView.setAnimationDelegate(self)
        UIView.setAnimationDidStopSelector("stop")
        // 实现动画代码，切换图片没有效果。。。
        self.image.center = CGPointMake(100, 100)
        UIView.commitAnimations()
    }
    func stop()
    {
        print("动画结束啦")
    }
}