Making sure remote data is loaded before setting Collection View delegate and datasource

Question

Created Apr ’22

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Hi,

I wish to remotely load some data before I initialise the collection view. I read somewhere one way to do this is to only set the delegate and datasource after I loaded the data.

However I'm setting the error

"UICollectionView.delegate must be used from main thread only"

next to the line

self.myCollectionView.delegate = self

I suppose this is not the best way to do this. What is the recommended way?

Cheers Richard

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Answer 1

Claude31 OP

Apr ’22

Accepted Answer

Where do you call this ?

self.myCollectionView.delegate = self

I don't know if it is the correct solution, but to avoid error, you should call from the main thread:

  DispatchQueue.main.async {
        self.myCollectionView.delegate = self
  }

Another way would be to hide the collectionView at start and unhide only when data are loaded (in the completion handler of load() )

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