在中间停止CAKeyframeAnimation

Question

目前我正沿着路径使用CAKeyframeAnimation移动png图像30秒。有没有办法在点击按钮时在0-30秒之间停止此动态图像？

Answer 1

这将删除动画......

[yourView.layer removeAllAnimations];

Answer 2

嗯......你想停止动画还是只想暂停/恢复？如果你想暂停一下，那就有这样的事情：

func pause(){
    pausedTime = foo.layer.convertTime(CACurrentMediaTime(), fromLayer: nil)
    foo.layer.speed = 0
    foo.layer.timeOffset = pausedTime!
}
func play(){
    pausedTime = foo.layer.timeOffset
    foo.layer.speed = 1.0
    foo.layer.timeOffset = 0
    let timeSincePause = foo.layer.convertTime(CACurrentMediaTime(), fromLayer: nil) - pausedTime!
    foo.layer.beginTime = timeSincePause
}

Answer 3

你试过吗

[view.layer removeAnimationForKey:kFrameAnimationKey];