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Editorial Team
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Asked: 2026-05-18T19:55:00+00:00

I need to synchronize a path animation on two different layers (one is used

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I need to synchronize a path animation on two different layers (one is used as a mask for another layer, the other shows a graphical element that follows the path, i.e. draws the mask). If I just set them up identically, they never quite do the same thing. Currently, I am using a CAKeyframeAnimation with a path (for the graphical element) and a CABasicAnimation, where I animate “strokeEnd” of the same path from 0.0 to 1.0 (for the mask).

I guess an animation group does not work here, since that would mean I apply the group to the mask layer, which would hide the graphical element.

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1 Answer

  1. Editorial Team

    Have you set calculationMode = kCAAnimationPaced for the keyframe animation?

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