Swift 4 UICollectionView detect end of scrolling

Question

I have an Horizontal UICollectionView on my app and I want to load more data when the user reaches the end (or nearly to the end) of UICollectionView w

Answer 1

Implement method scrollViewDidScroll of UIScrollViewDelegate:

var isLoading: Bool = false

 func scrollViewDidScroll(_ scrollView: UIScrollView) {
    let contentOffsetX = scrollView.contentOffset.x
    if contentOffsetX >= (scrollView.contentSize.width - scrollView.bounds.width) - 20 /* Needed offset */ {
        guard !self.isLoading else { return }
        self.isLoading = true
        // load more data
        // than set self.isLoading to false when new data is loaded
    }
}