问检测UITableView何时滚动到底部

EN

func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
    if indexPath.row + 1 == yourArray.count {
        print("do something")
    }
}

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")
    }
}

if tableView.contentOffset.y >= (tableView.contentSize.height - tableView.frame.size.height) {    
    /// you reached the end of the table
}

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
    }
}