机器猫工作笔记(持续更新中...)

1.如何手动停止CAKeyframeAnimation的动画

//暂停动画
-(void)pauseLayer:(CALayer*)layer
{
    CFTimeInterval pausedTime = [layer convertTime:CACurrentMediaTime() fromLayer:nil];
    layer.speed = 0.0;
    layer.timeOffset = pausedTime;
}

stopAnimation