How to check if an CABasicAnimation is applied and running already?

Check the return value of rotatedLayer animationForKey:@"transform.rotation. Z".

Check the return value of rotatedLayer animationForKey:@"transform.rotation. Z";.

Have you gone through the previous post this I think this is same as you are asking for... Hope that will work for you... Also go through this link which is same as below answer...

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