8.24 Animation 简单动画

import UIKit

class ViewController: UIViewController {
    @IBOutlet weak var redView: UIView!
    @IBOutlet weak var blueView: UIView!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
    }
    
    
    @IBAction func didStart(sender: UIButton) {
//        UIView.animateWithDuration(3) {
//            self.redView.frame = CGRect(x: 300, y: 300, width: 100, height: 100)         更改红色视图坐标及颜色
//            self.redView.backgroundColor = UIColor.blueColor()
//            
//        }
//        执行时长，执行的内容，结束后做什么
//        UIView.animateWithDuration(5, animations: { 
//            self.blueView.frame = CGRect(x: 50, y: 50, width: 100, height: 100)    更改蓝色视图坐标
//            }) { (completion) in
//                print("动画执行完了")
//        }
          时长，延迟多少秒执行，执行的可选方法，执行的内容
//        UIView.animateWithDuration(5, delay: 3, options: [.CurveEaseInOut, .Autoreverse], animations: {
//            self.blueView.backgroundColor = UIColor.yellowColor()
//            self.blueView.frame = CGRect(x: 50, y: 50, width: 100, height: 100)
//            }) { (completion) in
//                print("The End")
//        }     

注释了的代码为写法之一，编译运行，看到两个视图颜色位置均有变化

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使用UIVIew.setAnimation的方法做动画效果

//        1.开始设置动画
        UIView.beginAnimations("first", context: nil)
        
//        2. 设置动画属性
        UIView.setAnimationDuration(5)     //时长几秒
        UIView.setAnimationRepeatCount(2)  //重复几次
        UIView.setAnimationDelegate(self)  //设置代理方法所在的对象
        UIView.setAnimationWillStartSelector(#selector(animateDidStart(_:context:)))
      UIView.setAnimationDidStopSelector(#selector(animateDidStop(_:finished:context:)))
        
//        3.设置目标属性
        self.redView.backgroundColor = UIColor.grayColor()
        
//        4.提交动画
        UIView.commitAnimations()   
    }
    
    func animateDidStart(animationID: NSString, context: UnsafePointer<Void>) {
        print("will start")
    }
    //NSNumber
    func animateDidStop(animationID: NSString, finished: Bool, context: UnsafePointer<Void>) {
        print(finished)
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
}

编译运行，看到红色方块用5秒变化成了灰色

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