IOS Animation-CABasicAnimation例子（简单动画实现）

   这些例子都是CABasicAnimation的一些简单实现的动画，例如移动、透明度、翻转等等。方法里面传入一个CALayer类或者子类就可以了。

下面是用swift实现的，这些方法我们也可以用作公共类来调用：

    //移动动画position
    func addLayerAnimationPosition(layer: CALayer) {
        let animation = CABasicAnimation(keyPath: "position")
        //开始的位置
        animation.fromValue = NSValue(CGPoint: layer.position)
        //移动到的位置
        animation.toValue = NSValue(CGPoint: CGPointMake(120, 200))
        //持续时间
        animation.duration = 3
        //运动后的位置保持不变（layer的最后位置是toValue）
        animation.removedOnCompletion = false
        animation.fillMode = kCAFillModeForwards
    
        //添加动画
        layer.addAnimation(animation, forKey: "addLayerAnimationPosition")
    }
    
    //透明度 opacity
    func addLayerAnimationOpacity(layer: CALayer) {
        let animation = CABasicAnimation(keyPath: "opacity")
        animation.fromValue = 1
        animation.toValue = 0
        animation.duration = 3
        
        layer.addAnimation(animation, forKey: "addLayerAnimationOpacity")
        
    }
    
    //变大与位置 bounds
    func addLayerAnimationBounds(layer:CALayer) {
        let animation = CABasicAnimation(keyPath: "bounds")
        animation.toValue = NSValue(CGRect:CGRectMake(130, 200, 140, 140))
        animation.duration = 3
        animation.repeatCount = 1
        
        layer.addAnimation(animation, forKey: "addLayerAnimationBounds")
    }
    
    //由小变大 bounds.size
    func addLayerAnimationBoundsSize(layer:CALayer) {
        let animation = CABasicAnimation(keyPath: "bounds.size")
        animation.fromValue = NSValue(CGSize: layer.bounds.size)
        animation.toValue = NSValue(CGSize:CGSizeMake(layer.bounds.size.width+20, layer.bounds.size.height+20))
        animation.duration = 3
        animation.repeatCount = 1
        
        layer.addAnimation(animation, forKey: "addLayerAnimationBoundsSize")
    }
    
    //改变颜色 backgroundColor
    func addLayerAnimationBackgroundColor(layer:CALayer) {
        let animation = CABasicAnimation(keyPath: "backgroundColor")
        animation.toValue = UIColor.blueColor().CGColor
        animation.duration = 3
        animation.repeatCount = 1
        
        layer.addAnimation(animation, forKey: "addLayerAnimationMargin")
    }
    
    //渐变圆角 cornerRadius
    func addLayerAnimationCornerRadius(layer:CALayer) {
        let animation = CABasicAnimation(keyPath: "cornerRadius")
        animation.toValue = 30
        animation.duration = 3
        animation.repeatCount = 1
        
        layer.addAnimation(animation, forKey: "addLayerAnimationCornerRadius")
    }
    
    //改变边框border的大小(图形周围边框，border默认为黑色)， borderWidth
    func addLayerAnimationBorderWidth(layer:CALayer) {
        let animation = CABasicAnimation(keyPath: "borderWidth")
        animation.toValue = 10
        animation.duration = 3
        animation.repeatCount = 1
        
        layer.addAnimation(animation, forKey: "addLayerAnimationBorderWidth")
    }
    
    //改变layer内容(图片)，注意如果想要达到改变内容的动画效果，首先在运行动画之前定义好layer的contents contents
    func addLayerAnimationContents(layer:CALayer) {
        let animation = CABasicAnimation(keyPath: "contents")
        let toImage = UIImage.init(named: "通车辆设计矢量素材-06.png")?.CGImage
        animation.toValue = toImage
        animation.duration = 3
        animation.repeatCount = 1
        
        layer.addAnimation(animation, forKey: "addLayerAnimationBounds")
    }
    
    //缩放、放大 transform.scale
    func addLayerAnimationTransformScale(layer:CALayer) {
        let animation = CABasicAnimation(keyPath: "transform.scale")
        //开始时的倍率
        animation.fromValue = 1.0
        //结束时的倍率
        animation.toValue = 0.5
        animation.duration = 3
        animation.repeatCount = 1
        animation.autoreverses = true
        
        layer.addAnimation(animation, forKey: "addLayerAnimationScale")
    }
    
    //旋转动画(翻转，沿着X轴) transform.rotation.x
    func addLayerAnimationTranformRotationX(layer: CALayer) {
        let animation = CABasicAnimation(keyPath: "transform.rotation.x")
        //旋转180度 = PI
        animation.toValue = M_PI
        animation.duration = 3
        animation.repeatCount = 1
        //这里我们可以添加可以不添加，添加一个缓慢进出的动画效果(int/out)。当不添加时，匀速运动，会使用kCAMediaTimingFunctionLinear；当添加时，layer会在开始和结束时比较缓慢
        animation.timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseInEaseOut)
        
        layer.addAnimation(animation, forKey: "addLayerAnimationTranformRotationX")
    }
    
    //旋转动画(翻转，沿着Y轴) transform.rotation.y
    func addLayerAnimationTranformRotationY(layer: CALayer) {
        let animation = CABasicAnimation(keyPath: "transform.rotation.y")
        //旋转180度 = PI
        animation.toValue = M_PI
        animation.duration = 3
        animation.repeatCount = 1
        //这里我们可以添加可以不添加，添加一个缓慢进出的动画效果(int/out)。当不添加时，匀速运动，会使用kCAMediaTimingFunctionLinear；当添加时，layer会在开始和结束时比较缓慢
        animation.timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseInEaseOut)
        
        layer.addAnimation(animation, forKey: "addLayerAnimationTranformRotationY")
    }
    
    //旋转动画（沿着Z轴） transform.rotation.z
    func addLayerAnimationTranformRotationZ(layer: CALayer) {
        let animation = CABasicAnimation(keyPath: "transform.rotation.z")
        //旋转360度 = PI*2
        animation.toValue = M_PI*2
        animation.duration = 3
        animation.repeatCount = 1
        //这里我们可以添加可以不添加，添加一个缓慢进出的动画效果(int/out)。当不添加时，匀速运动，会使用kCAMediaTimingFunctionLinear；当添加时，layer会在开始和结束时比较缓慢
        animation.timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseInEaseOut)
        
        layer.addAnimation(animation, forKey: "addLayerAnimationTranformRotationZ")
    }
    
    //横向移动（沿着X轴） transform.translation.x
    func addLayerAnimationTranformTranslationX(layer: CALayer) {
        let animation = CABasicAnimation(keyPath: "transform.translation.x")
        animation.toValue = 20
        animation.duration = 3
        animation.repeatCount = 1
        //这里我们可以添加可以不添加，添加一个缓慢进出的动画效果(int/out)。当不添加时，匀速运动，会使用kCAMediaTimingFunctionLinear；当添加时，layer会在开始和结束时比较缓慢
        animation.timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseInEaseOut)
        
        layer.addAnimation(animation, forKey: "addLayerAnimationTranformTranslationX")
    }
    
    //纵向移动（沿着Y轴） transform.translation.y
    func addLayerAnimationTranformTranslationY(layer: CALayer) {
        let animation = CABasicAnimation(keyPath: "transform.translation.y")
        animation.toValue = 20
        animation.duration = 3
        animation.repeatCount = 1
        //这里我们可以添加可以不添加，添加一个缓慢进出的动画效果(int/out)。当不添加时，匀速运动，会使用kCAMediaTimingFunctionLinear；当添加时，layer会在开始和结束时比较缓慢
        animation.timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseInEaseOut)
        
        layer.addAnimation(animation, forKey: "addLayerAnimationTranformTranslationY")
    }

如果我们只要看keypath的值，我们可以看到下面文章

http://www.cnblogs.com/alunchen/p/5300075.html

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