Reload tableView after dismiss a viewController

Question

I have a ViewController(VCA) with a TableView inside. From this ViewController it is possibile to call another ViewController (VCB). In this second VC it is possibile add an ite

Answer 1

The code in your question is perfectly good. I use the same approach and it works like a charm. IMHO the problem in your code is that you only refresh the table view with self.tableView.reloadData(), BUT may be you forget to refresh your data model - the data source for the table view. E.g. if you delete an entity from Core Data then you need to refetch your data and only after that reload the table view.

Answer 2

you can do this in two way :-

1)
Do One thing in VCA

VCA

   override func viewWillAppear(_ animated: Bool){
       tableView.reloadData()
   }

If this does not work out then try this.

2) create an instance of VCA in VCB and whenever you move from VCA to VCB pass the value of VCA to the instance of VCB and from there reload the table.

VCB

    var instanceOfVCA:VCA!    // Create an instance of VCA in VCB

   func saveButton(){
    instanceOfVCA.tableView.reloadData()  // reload the table of VCA from the instance
    dismiss(animated: true, completion: nil) 
  }

VCA

 override func prepare(for segue: UIStoryboardSegue, sender: Any!) {
  VCB.instanceOfVCA = self   // Pass the value of VCA in instance of VCB while navigating through segue
}

Answer 3

Try this: make changes as below

let addItemVC : VCB? = nil

In ViewDidLoad

 override func viewDidLoad() {
            super.viewDidLoad()
            addItemVC = (storyboard?.instantiateViewController(withIdentifier: "ViewControllerID") as! SelectionViewController?)! // change ViewControllerID with your controller id
            addItemVC.delegate = self

    }

Answer 4

Here you are calling table's reload data when the viewcontroller is not yet shown. i.e, Even before you dismissed the viewcontroler VCB and viewcontroller VCA is shown, you are calling reloadData. Try calling reload data in VCA's viewWillAppear(animated: Bool) function.

Answer 5

I managed to do it using delegate/protocol that is usually used to pass data between view controllers but in this instance I just called the function without passing data and inside this function i put ( tableView.reloadData() ) and it worked like a sweet :)

juts google "Passing data between view controllers and use the method as I explained above"