UICollectionView selectItemAtIndexPath doesn't call didSelectItemAtIndexPath

Question

I have a collection view. I would like to programmatically select a cell. This is the code I use

[_collectionView selectItemAtIndexPath:[NSIndexPath indexPathFor         


        

Answer 1

You can make it.

[self.collectionView selectItemAtIndexPath:indexPath animated:YES scrollPosition:UICollectionViewScrollPositionNone];
[self collectionView:self.collectionView didSelectItemAtIndexPath:indexPath];

if use only selectItemAtIndexPath:animated:scrollPosition: method, don't call delegate method. if use only collectionView:didSelectItemAtIndexPath: method, it don't work stabil

happy code :)

Answer 2

Yes, this is proper behaviour. Documentation for [selectItemAtIndexPath:animated:scrollPosition:] says:

This method does not cause any selection-related delegate methods to be called.

Answer 3

Osmenda's answer in Swift with my custom collection view:

self.collectionView(calendarCV, didSelectItemAtIndexPath: indexPath)

Answer 4

Swift 4:

self.collectionView(daysCollectionView, didSelectItemAt: indexPath)