The goal is to create a custom UICollectionView and UITableView class (or alternative way of reaching the same goal) that can listen to didEndDisplaying and willDisplay methods on the delegate to implement some logic.
Reproduction is pretty simple
- Open the XCode project
- Launch the app for simulator of your choice
- Scroll and see that nothing is printed in the console
- Uncomment
func collectionView(_ collectionView: UICollectionView, didEndDisplaying cell: UICollectionViewCell, forItemAt indexPath: IndexPath)inViewController.swift - Launch the app again
- See that
didEndDisplayingis called from both the internal and external delegate.
What i'm looking for is that CustomCollectionView.didEnd(item: Int) is also called when collectionView(_ collectionView: UICollectionView, didEndDisplaying cell: UICollectionViewCell, forItemAt indexPath: IndexPath) on ViewController.swift is NOT implemented