Update constraints of other elements when UITableView height change? or Dynamic Height Issue for UITableView Cells (Swift)

https://stackoverflow.com/questions/34759302/update-constraints-of-other-elements-when-uitableview-height-change

 @IBOutlet weak var tableheight: NSLayoutConstraint!

 @IBOutlet weak var displayInvoicetableview: UITableView!

    

 override func viewDidLayoutSubviews()

    {

        tableheight.constant = self.displayInvoicetableview.contentSize.height

        self.view.layoutIfNeeded()

        

           }


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after reload the table view it may not works then the solution for this in below link

https://stackoverflow.com/questions/32886811/when-is-it-most-appropriate-to-update-uitableview-height-nslayoutconstraint