UITableView scroll to bottom

Scrolling to tableViewCell?

//for instance, you have 15 cells
NSIndexPath *indexPath = [NSIndexPath indexPathForRow:14 inSection:0];
[self.tableView scrollToRowAtIndexPath:indexPath
                      atScrollPosition:UITableViewScrollPositionTop
                              animated:YES];

Swift 5, iOS 12 tested

👇 This code works perfectly for UITableView, even if there are sections with 0 elements (which will crash in every other solution I saw on the Internet)

extension UITableView {
    func scrollTableViewToBottom(animated: Bool) {
        guard let dataSource = dataSource else { return }

        var lastSectionWithAtLeasOneElements = (dataSource.numberOfSections?(in: self) ?? 1) - 1

        while dataSource.tableView(self, numberOfRowsInSection: lastSectionWithAtLeasOneElements) < 1 {
            lastSectionWithAtLeasOneElements -= 1
        }

        let lastRow = dataSource.tableView(self, numberOfRowsInSection: lastSectionWithAtLeasOneElements) - 1

        guard lastSectionWithAtLeasOneElements > -1 && lastRow > -1 else { return }

        let bottomIndex = IndexPath(item: lastRow, section: lastSectionWithAtLeasOneElements)
        scrollToRow(at: bottomIndex, at: .bottom, animated: animated)
    }
}

fixed version from Kevin in this topic, preventing infinite scroll for tableView with 0 items: Source: https://stackoverflow.com/a/59470799/9763761

func scrollToBottom(animated: Bool) {
    guard let dataSource = dataSource else { return }
    var lastSectionWithAtLeastOneElement = (dataSource.numberOfSections?(in: self) ?? 1) - 1
    while dataSource.tableView(self, numberOfRowsInSection: lastSectionWithAtLeastOneElement) < 1 && lastSectionWithAtLeastOneElement > 0 {
        lastSectionWithAtLeastOneElement -= 1
    }
    let lastRow = dataSource.tableView(self, numberOfRowsInSection: lastSectionWithAtLeastOneElement) - 1
    guard lastSectionWithAtLeastOneElement > -1 && lastRow > -1 else { return }
    let bottomIndex = IndexPath(item: lastRow, section: lastSectionWithAtLeastOneElement)
    scrollToRow(at: bottomIndex, at: .bottom, animated: animated)
}

👇 This code works for UIScrollView, but won't work for UITableView that have more cells then one screen can fit, because of Apple's weird internal implementation of UITableViewController:

extension UIScrollView {
    func scrollToBottom(animated: Bool) {
        guard contentSize.height > bounds.size.height else { return }

        let bottomOffset = CGPoint(x: 0, y: contentSize.height - bounds.size.height + contentInset.bottom)
        setContentOffset(bottomOffset, animated: true)
    }
}