How do I start a function after the Collection View is fully loaded?

Question

I use override func layoutSubviews() but It's not working the way I want it to.

Thanks.

means you would like to call function after collectionview is filled with all data ? — Jitendra Modi, Jan 05 '17 at 12:16
Is there any networking involved? Or just want to detect, when collection view is loaded after a `reloadData()`? — dirtydanee, Jan 05 '17 at 12:20
There is not callback or completion block on reloadData for Collection View, furthermore reloadData call is not synchronous ( according to my empirical observations ). Please explain Your goal more clearly. — Georgi Boyadzhiev, Jan 05 '17 at 12:22
You have asked the [exact same question](http://stackoverflow.com/questions/41458586/how-can-i-start-function-when-uicollectionview-is-finished-loading) before. Please do not do this. — shallowThought, Jan 05 '17 at 13:39
Please improve your original question, since it is still open, rather than asking a new one. — Rob Napier, Jan 05 '17 at 13:45

score 1 · Answer 1 · answered Jan 05 '17 at 13:35

Do as follow (obj - c)

- (void)collectionView:(UICollectionView *)collectionView 
       willDisplayCell:(UICollectionViewCell *)cell 
    forItemAtIndexPath:(NSIndexPath *)indexPath{

    if([indexPath row] == ((NSIndexPath*)[[collectionView indexPathsForVisibleRows] lastObject]).row){
        //end of loading, now your collection view is fully loaded.
        // Now call the method you wanted to call
    }
}

How do I start a function after the Collection View is fully loaded?

1 Answers1