Another CoreAnimation Protip

If you’re building your interface using CALayers, beware the following weirdness when sublayers are added to a parent layer.  I had a parent layer, with a bunch of sublayers being added and removed during the lifetime of the view.  I didn’t want any animations when that occurs, but I was still noticing a fade in / fade out action going on.

I had already disabled the kCAOrderIn and kCAOrderOut action keys on the sublayers, but I didn’t realize I also had to disable the sublayers action on the parent layer.  Beware that the sublayers action is also fired when you call [CALayer addSublayer:] and [CALayer removeFromSuperlayer].


Posted on June 9, 2011, in Tips and tagged , , . Bookmark the permalink. Leave a comment.

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