UIButton Heartbeat动画

我为UIButton创建了一个心跳动画.但是,没有办法停止这个动画,因为它是一个无限的代码循环.在修补了许多UIView动画代码块后,我无法UIViewAnimationOptions.Repeat生产出我需要的东西.如果我能做到这一点,我可以简单button.layer.removeAllAnimations()地删除动画.什么是写这个允许删除动画的方法？我可能正在考虑一个计时器,但这可能会让多个动画发生变得混乱.

func heartBeatAnimation(button: UIButton) {

    button.userInteractionEnabled = true
    button.enabled = true

    func animation1() {

        UIView.animateWithDuration(0.5, delay: 0.0, options: [], animations: { () -> Void in

            button.transform = CGAffineTransformMakeScale(2.0, 2.0)
            button.transform = CGAffineTransformIdentity

        }, completion: nil)

        UIView.animateWithDuration(0.5, delay: 0.5, options: [], animations: { () -> Void in

            button.transform = CGAffineTransformMakeScale(2.0, 2.0)
            button.transform = CGAffineTransformIdentity

            }) { (Bool) -> Void in

                delay(2.0, closure: { () -> () in

                    animation2()

                })       
        }
    }

    func animation2() {

        UIView.animateWithDuration(0.5, delay: 0.0, options: [], animations: { () -> Void in

            button.transform = CGAffineTransformMakeScale(2.0, 2.0)
            button.transform = CGAffineTransformIdentity

            }, completion: nil)

        UIView.animateWithDuration(0.5, delay: 0.5, options: [], animations: { () -> Void in

            button.transform = CGAffineTransformMakeScale(2.0, 2.0)
            button.transform = CGAffineTransformIdentity

            }) { (Bool) -> Void in

                delay(2.0, closure: { () -> () in

                    animation1()

                })
        }
    }

    animation1()

}

Phil Andrews.. 36

这非常有效.阻尼和弹簧需要稍微调整一下,但这解决了这个问题.removeAllAnimations()清除动画并将按钮返回到正常状态.

button.userInteractionEnabled = true
button.enabled = true

let pulse1 = CASpringAnimation(keyPath: "transform.scale")
pulse1.duration = 0.6
pulse1.fromValue = 1.0
pulse1.toValue = 1.12
pulse1.autoreverses = true
pulse1.repeatCount = 1
pulse1.initialVelocity = 0.5
pulse1.damping = 0.8

let animationGroup = CAAnimationGroup()
animationGroup.duration = 2.7
animationGroup.repeatCount = 1000
animationGroup.animations = [pulse1]

button.layer.addAnimation(animationGroup, forKey: "pulse")

这篇文章非常有帮助:CAKeyframeAnimation在重复之前延迟

这非常有效.阻尼和弹簧需要稍微调整一下,但这解决了这个问题.removeAllAnimations()清除动画并将按钮返回到正常状态.

button.userInteractionEnabled = true
button.enabled = true

let pulse1 = CASpringAnimation(keyPath: "transform.scale")
pulse1.duration = 0.6
pulse1.fromValue = 1.0
pulse1.toValue = 1.12
pulse1.autoreverses = true
pulse1.repeatCount = 1
pulse1.initialVelocity = 0.5
pulse1.damping = 0.8

let animationGroup = CAAnimationGroup()
animationGroup.duration = 2.7
animationGroup.repeatCount = 1000
animationGroup.animations = [pulse1]

button.layer.addAnimation(animationGroup, forKey: "pulse")

这篇文章非常有帮助:CAKeyframeAnimation在重复之前延迟