cvalvq
Last Updated: February 25, 2016
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4.393K
· brianmichel

UICollectionViewLayoutAttributes Subclass

If you're using a custom subclass of UICollectionViewLayoutAttributes, you have to implement copyWithZone: to make sure your currently set values get copied over.

It seems that the UICollectionViewLayout may copy the attributes you pass back in layoutAttributesForElementsInRect: before applying them to the UICollectionViewCell.

Here's a sample project demonstrating the point, CollectionViewAttributesTest.