浅谈swift动画（三）

Core Animation之CABasicAnimation

1.toValue与byValue

toValue表示最终的,调整到什么位置,byValue表示调整的幅度,调整了:

        //位置
        let animation:CABasicAnimation = CABasicAnimation()
        animation.keyPath = "position"
        let positionX:CGFloat = loginButton!.frame.origin.x+0.5*loginButton!.frame.size.width;
        let positionY:CGFloat = loginButton!.frame.origin.y+0.5*loginButton!.frame.size.height+100;
        animation.toValue = NSValue(cgPoint: CGPoint(x:positionX,y: positionY))
        animation.byValue = NSValue(cgPoint:CGPoint(x:-20,y:100))
        animation.duration = 2.0
        animation.fillMode = kCAFillModeForwards
        animation.isRemovedOnCompletion = false
        loginButton?.layer.add(animation, forKey: nil)

        //位置
        let animation:CABasicAnimation = CABasicAnimation()
        animation.keyPath = "transform.translation.y"
        animation.toValue = 100
        animation.duration = 2.0
        animation.fillMode = kCAFillModeForwards
        animation.isRemovedOnCompletion = false
        loginButton?.layer.add(animation, forKey: nil)

2.缩放:

        //位置
        let animation:CABasicAnimation = CABasicAnimation()
        animation.keyPath = "transform.scale.x"
        animation.fromValue = 1.0
        animation.toValue = 0.8
        animation.duration = 2.0
        animation.fillMode = kCAFillModeForwards
        animation.isRemovedOnCompletion = false
        loginButton?.layer.add(animation, forKey: nil)

3.旋转:

        // transform除了scale缩放属性之外还有rotation旋转属性
        //旋转
        let animation:CABasicAnimation = CABasicAnimation()
        animation.keyPath = "transform.rotation.x"
        animation.toValue = Double.pi * 2
        animation.duration = 2.0
        animation.fillMode = kCAFillModeForwards
        animation.isRemovedOnCompletion = false
        loginButton?.layer.add(animation, forKey: nil)

4.圆角动画:

        //圆角
        let animation:CABasicAnimation = CABasicAnimation()
        animation.keyPath = "cornerRadius"
        animation.toValue = 25
        animation.duration = 2.0
        animation.fillMode = kCAFillModeForwards
        animation.isRemovedOnCompletion = false
        loginButton?.layer.add(animation, forKey: nil)

5.边框动画

        //边框
        loginButton?.layer.borderColor = UIColor.gray.cgColor
        loginButton?.layer.cornerRadius = 10.0
        let animation:CABasicAnimation = CABasicAnimation()
        animation.keyPath = "borderWidth"
        animation.toValue = 10
        animation.duration = 2.0
        animation.fillMode = kCAFillModeForwards
        animation.isRemovedOnCompletion = false
        loginButton?.layer.add(animation, forKey: nil)

6.背景颜色:

        //颜色
        let animation:CABasicAnimation = CABasicAnimation()
        animation.keyPath = "backgroundColor"
        animation.fromValue = UIColor.green.cgColor
        animation.toValue = UIColor.red.cgColor
        animation.duration = 2.0
        animation.fillMode = kCAFillModeForwards
        animation.isRemovedOnCompletion = false
        loginButton?.layer.add(animation, forKey: nil)

7.边框颜色

        //颜色
        loginButton?.layer.borderWidth = 5
        let animation:CABasicAnimation = CABasicAnimation()
        animation.keyPath = "borderColor"
        animation.fromValue = UIColor.green.cgColor
        animation.toValue = UIColor.cyan.cgColor
        animation.duration = 3.0
        animation.fillMode = kCAFillModeForwards
        animation.isRemovedOnCompletion = false
        loginButton?.layer.add(animation, forKey: nil)

8.淡入:

        //淡入
        let animation:CABasicAnimation = CABasicAnimation()
        animation.keyPath = "opacity"
        animation.fromValue = UIColor.green.cgColor
        animation.toValue = 1.0
        animation.duration = 2.0
        animation.fillMode = kCAFillModeForwards
        animation.isRemovedOnCompletion = false
        loginButton?.layer.add(animation, forKey: nil)

9.阴影:

        //阴影渐变
        loginButton?.layer.shadowColor = UIColor.red.cgColor
        loginButton?.layer.shadowOpacity = 0.5
//        loginButton?.layer.shadowPath = shadowPath.CGPath
        let animation:CABasicAnimation = CABasicAnimation()
        animation.keyPath = "shadowOffset"
        animation.toValue = NSValue(cgSize: CGSize(width: 10, height: 10))
        animation.duration = 2.0
        animation.fillMode = kCAFillModeForwards
        animation.isRemovedOnCompletion = false
        loginButton?.layer.add(animation, forKey: nil)