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cocoa-touchcocoaioscore-animation

CAAnimation track progress

I've been working recently on some animations and it struck me that there is no delegate method of CAAnimation that updates animation progress. I've tried to use a timer and request a transform from a view being transformed (rotated by z axis) but it always returns the same transform.

Is there any way to get the values being updated by CAAnimation?

Solution

  • If you want the details of the current state of the animation of a layer, query [layer presentationLayer]. You can access the transform property within that object.