What does this UICollectionView exception mean?

Question

Created Feb ’22

Replies 4

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Views 1.2k

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In my application using UICollectionViewDiffableDataSource and compositional layout, I saw this exception

Thread 1: "This solver does not handle estimated items so this method does nothing. Are you calling this in error?"

that was thrown in dataSource.apply(snapshot, animatingDifferences: animated).

I don't understand what it is telling me and how I should fix it. Any idea?

Boost

Answer 1

Feb ’22

Are you using estimated height for cells ?

0

Answer 2

Mar ’22

Yes, I do use self-sizing cells and the code works fine 99% of the time. Seems like a race condition.

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Answer 3

Sep ’23

@Claude31 or @ortwin has one of you found a fix for this? I am still having this problem and im not having any luck finding a solution for it.

0

Answer 4

Sep ’23

@Claude31 or @ortwin has one of you found a fix for this? I am still having this problem and im not having any luck finding a solution for it.

0