Swift26/90Days - CABasicAnimation

Swift90Days - CABasicAnimation

CABasicAnimation 的结构如下：

• NSObject
  
  
  • CAAnimation
    
    
    • CAPropertyAnimation
      
      
      • CABasicAnimation

用起来也挺简单：

import UIKit

class AnimationViewController: UIViewController {

    var testView: UIView!

    override func viewDidLoad() {
        super.viewDidLoad()
        testView = UIView(frame: CGRectMake(100, 200, 100, 100))
        testView.backgroundColor = UIColor.blackColor()
        view.addSubview(testView)

        // 开始动画
        var anim = CABasicAnimation(keyPath: "position.y")
        anim.duration = 2
        anim.fromValue = testView.frame.origin.y
        anim.toValue   = testView.frame.origin.y + 100
        anim.delegate = self
        anim.removedOnCompletion = false
        anim.fillMode = kCAFillModeForwards

        testView.layer.addAnimation(anim, forKey: "translate")
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
    }

}

哈哈哈哈哈就写这么多了，睡觉！

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References

• CABasicAnimation Class Reference