Detect when UITableView has scrolled to the bottom
Is the following post still the accepted way of detecting when an instance of UITableView has scrolled to the bottom [in Swift], or has it been altered (as in: improved) since?
Problem detecting if UITableView has scrolled to the bottom
Thank you.
try this
func scrollViewDidScroll(_ scrollView: UIScrollView) {
let height = scrollView.frame.size.height
let contentYoffset = scrollView.contentOffset.y
let distanceFromBottom = scrollView.contentSize.height - contentYoffset
if distanceFromBottom < height {
print(" you reached end of the table")
}
}
or you can find in this way
if tableView.contentOffset.y >= (tableView.contentSize.height - tableView.frame.size.height) {
//you reached end of the table
}
Swift 3
func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
if indexPath.row + 1 == yourArray.count {
print("do something")
}
}
We can avoid using scrollViewDidScroll
and use tableView:willDisplayCell
func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
if indexPath.section == tableView.numberOfSections - 1 &&
indexPath.row == tableView.numberOfRows(inSection: indexPath.section) - 1 {
// Notify interested parties that end has been reached
}
}
This should work for any number of sections.
In Swift 4
func scrollViewDidScroll(_ scrollView: UIScrollView) {
let isReachingEnd = scrollView.contentOffset.y >= 0
&& scrollView.contentOffset.y >= (scrollView.contentSize.height - scrollView.frame.size.height)
}
If you implement expandable UITableView/UICollectionView
, you may need to check scrollView.contentSize.height >= scrollView.frame.size.height