Why does my UITableView “jump” when inserting or removing a row?

Question

(Happy to accept an answer in Swift or Objective-C)

My table view has a few sections, and when a button is pressed, I want to insert a row at the end of section 0.

Answer 1

I don't know how to fix it correctly, but my solution works for me

// hack: for fix jumping of tableView as for tableView difficult to calculate height of cells
    tableView.hackAgainstJumping {
      if oldIsFolded {
        tableView.insertRows(at: indexPaths, with: .fade)
      } else {
        tableView.deleteRows(at: indexPaths, with: .fade)
      }
    }


extension UITableView {
  func hackAgainstJumping(_ block: () -> Void) {
      self.contentInset.bottom = 300
      block()
      self.contentInset.bottom = 0
  }
}