iOS项目开发实战——制作视图的缩放动画

     视图的大小应该是随时可控的。今天我们就来实现对一个View的缩放动画。该动画的实现与位移动画，透明度动画稍有不同。具体实现如下：

import UIKit

class ScaleViewController: UIViewController {

    
    
    @IBOutlet weak var greenSquare: UIView!
    
    override func viewDidLoad() {
        super.viewDidLoad()

        // Do any additional setup after loading the view.
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
    
    override func viewDidAppear(animated: Bool) {
        super.viewDidAppear(animated)
        
        func anim(){
        
            self.greenSquare.transform = CGAffineTransformMakeScale(0.5, 0.5)//缩小为原来的0.5倍；
        }
        
        
        UIView.animateWithDuration(1, animations: anim)
        
        
        
    }

}

iOS项目开发实战——制作视图的缩放动画

原文：http://blog.csdn.net/chenyufeng1991/article/details/47803451