ios - How to scroll to the exact end of the UITableView?

Question

I have a UITableView that is populated with cells with dynamic height. I would like the table to scroll to the bottom when the view controller is pushed from view controller.

I have tried with contentOffset and tableView scrollToRowAtIndexPath but still I am not getting the perfect solution for exactly I want.

Can anyone please help me fix this issue?

Here is my code to scroll:

let indexPath = NSIndexPath(forRow: commentArray.count-1, inSection: 0)
tableView.scrollToRowAtIndexPath(indexPath, atScrollPosition: .Bottom, animated: true)

Answer 1

For Swift 3.0

Write a function :

func scrollToBottom(){
    DispatchQueue.main.async {
        let indexPath = IndexPath(row: self.dataArray.count-1, section: 0)
        self.tableView.scrollToRow(at: indexPath, at: .bottom, animated: true)
    }
}

and call it after you reload the tableview data

tableView.reloadData()
scrollToBottom()