Why is CAConstraint not working?

So you’re having problems with CAConstraint? It seems like no matter what you do the Constraint isn’t being applied to the Sublayer? And you’re CALayers are appearing in weird positions? Or not appearing at all?

Well the answer for me is surprisingly simple (and embarrassing)

?View Code OBJC
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[sublayer addConstraint:
[CAConstraint constraintWithAttribute:kCAConstraintMidX 
relativeTo:@"superlayer"
attribute:kCAConstraintMidX]]

Now see that that @”superlayer”? Notice that it’s not a Uppercase “L” as I was using “superLayer” where upon Core Animation was unable to find the layer “superLayer” and therefore have nothing to do with the constraints.

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This entry was posted on Monday, February 2nd, 2009 at 9:46 am and is filed under Cocoa. You can follow any responses to this entry through the RSS 2.0 feed. Both comments and pings are currently closed.

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