UITableView Detecting Last Cell

Question

How can I detect when a UITableView has been scrolled to the bottom so that the last cell is visible?

Answer 1

Create elegant extension for UITableView:

extension UITableView {

    func isLast(for indexPath: IndexPath) -> Bool {

        let indexOfLastSection = numberOfSections > 0 ? numberOfSections - 1 : 0
        let indexOfLastRowInLastSection = numberOfRows(inSection: indexOfLastSection) - 1

        return indexPath.section == indexOfLastSection && indexPath.row == indexOfLastRowInLastSection
    }
}

Example of usage:

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {

    if tableView.isLast(for: indexPath) {
        //do anything then
    }

    return cell
}