prevent table view to scrolling top after insertRows

Question

I have viewController with tableView inside it. this tableView has many sections and rows. when I try to add a new row in the last section using TableView.insertRows(at: [IndexPath(row: r, section: sec)], with: .bottom)

tableView scrolls to top, and displays the first cell in the current section.

how to prevent tableView from scrolling to the top?

thanks

---

This my solution

When try to add cell, I use this code

self.didAddNewCell = true
    self.chatTableView.reloadData()
    self.scrollToBottom()

Then adding this code

func scrollViewDidScroll(_ scrollView: UIScrollView) {

    if self.didAddNewCell {

        self.didAddNewCell = false

        let bottomOffset = CGPoint(x: CGFloat(0), y:CGFloat(chatTableView.contentSize.height - self.chatTableView.bounds.size.height))

        scrollView.setContentOffset(bottomOffset, animated: true)

    }

}

And this code for scrolling to bottom

func scrollToBottom() {

    let sections = self.chatTableView.numberOfSections

    if sections > 0 {

        let rows = self.chatTableView.numberOfRows(inSection: sections - 1)

        let last = IndexPath(row: rows - 1, section: sections - 1)

        self.chatTableView.scrollToRow(at: last, at: .none, animated: false)
    }
}

Answer 1

Try THIS IN YOUR scrollViewDidScroll METHOD-:

  CGPoint bottomOffset = CGPoint(x: CGFloat(0), y:CGFloat(scrollView.contentSize.height - self.scrollView.bounds.size.height))      

    scrollView.setContentOffset(bottomOffset, animated: true)

Answer 2

updating the @Tushar Sharma answer...

just put the following line in method scrollViewDidScroll in your UITableView...

contentOffset = CGPoint(x: CGFloat(0), y:CGFloat(scrollView.contentSize.height - scrollView.bounds.size.height))

where the contentOffset is CGPoint... declear the global variable of contentOffset..

var contentOffset : CGPoint?

and use contentOffset value written after the code which causes the UITableView to scroll to the top as follow...

self.tableView.setContentOffset(self.contentOffset!, animated: false)

in my case its was self.tableView.reloadData() because i append values in dataset at index 0