I figured it out, it was my programming mistake and lack of proper sleep :). Another VC which was listening for notifications about the result of the same fetch was triggering a popup even though it was not visible, but was alive, embedded in a tab bar controller. So my "failure" popup was never executed properly. I figured it out after I updated the showModal method with the sender parameter and following that I have added a fix that requires the calling VC to be visible when it wants to present a popup: func showModal(sender: UIViewController, title: String, msg: String, handler: ((UIAlertAction) -> Void)? = nil) {     let alert = UIAlertController(title: title, message: msg, preferredStyle: .alert)     alert.addAction(UIAlertAction(title: "Ok", style: .default, handler: handler))     DispatchQueue.main.async {       if sender.isVisible() {         self.present(alert, animated: true, completion: nil)       }     }   } where isVisible(): extension UIViewController {   func isVisible() -> Bool {     return self.isViewLoaded && self.view.window != nil   } }

I have managed to achieve my goal by creating a Storyboard and assign it to my custom UIViewController class. Make sure to set the Class and Storyboard ID: The code to present and use the Storyboard from the the presenting ViewController: let popup = UIStoryboard(name: "MyPopupVC", bundle: nil).instantiateViewController(withIdentifier: "myPopupUniqueID") as! MyPopupVC if let sheet = popup.sheetPresentationController { sheet.detents = [.large()] sheet.prefersGrabberVisible = true } popup.set(account: account) //Transfer account object to popup VC present(popup, animated: true)

Found the answer, pretty easy: func textFieldDidChangeSelection(_ textField: UITextField) { if textField == text1 { print(textField.text) // this code should run only for text1 for example } }

I realized that didPullToRefresh does not need to be marked as async. Removing "async" from the function signature solves the problem

One more thing hopefully useful for anyone, I was unable to use isEnabled property of the button to create the desired effect even with reloadRows but I managed to update the appearance of the slider with the following trick:      cell.cellSlider.isUserInteractionEnabled = cellData[indexPath.row].sliderOn     cell.cellSlider.alpha = cellData[indexPath.row].sliderOn == true ? 1.0 : 0.5 All the best!

@Claude31, your solutions was correct. I did some debugging and noticed that I was not updating all the data in my cell like you suggested. Mainly I was not setting the UISLider value in cellForRowAt but in the custom UITableViewCell. So now I know that reloadRows triggers cellForRowAt and I make sure that in cellForRowAt I always assign the cell contents: slider, labels, controls etc to a value from my array of myData structures containing the configurations/values of these elements. Thanks again!

Thanks a lot for the reply Claude31 and for clarifying some aspects that were not very obvious for me. I have tried implementing something along your line but I still have to press twice on my the SegmentedControl button to set the value of the button when I use myTableView.reloadRows(at: [index], with: .none) in func segmentControlSelected. Even so, the appeareance of the UISlider does not change. If I comment out reloadRows(at:with:), the SegmentedControl buttons set their values on the first click. Do you know why this happens? My cellForRowAt func contains the following: func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell { let cell = tableView.dequeueReusableCell(withIdentifier: K.cellNibName, for: indexPath) as! AccountHoldingsCell //Cell Delegate setup cell.delegate = self cell.cellIndexPath = indexPath .... cell.cellSlider.isEnabled = myData[indexPath.row] //Activity indicator self.activityIndicatorView.stopAnimating() return cell } Inside ViewControl class I have: class ViewController: UIViewController { .... var mergedBalance = ViewBalanceModel() var tempMergedBalance = ViewBalanceModel() var nbOfTableItems = 0 var myData : [Bool] = [] ... } myData is initialized inside a custom protocol that decodes API data and constructs a model in func extension ViewController: ViewBalanceProtocol { func didUpdateBalanceTable(from manager: Manager, with accData: ViewBalanceModel) { .... //Get Api data into tempMergedBalance struct nbOfTableItems = tempMergedBalance.arrayOfItems.count myData = Array(repeating: false, count: nbOfTableItems) //Array setting initial values as False for UISlider DispatchQueue.main.async { self.mergedBalance = self.tempMergedBalance self.myTableView.refreshControl?.endRefreshing() self.myTableView.reloadData() } } And of course: extension ViewController: AccountCellDelegate { func segmentControlSelected(cell: UITableViewCell, at index: IndexPath, segmentValue: Int, slider: UISlider) { myData[index.row] = (segmentValue != 0) myTableView.reloadRows(at: [index], with: .none) }