Swift Send data from Popup to Another View - swift

Question

I'm trying to send data from popup view to DataView.
it actually works ! .However, when I go back to popup view to edit the text it doesn't show the text that was entered and sent to DataView.
I'm sending the data through protocol.
PopupView
protocol DataEnteredDelegate: class {
func userDidEnterInformation(data: String)}
#IBAction func DoneButton(_ sender: Any) {
if let data = openTextView.text {
delegate?.userDidEnterInformation(data: data)
self.dismiss(animated: true, completion: nil)
}
}
DataView
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "openSummary" {
let sendingVC: popupViewController = segue.destination as! popupViewController
sendingVC.delegate = self
}
}
// Protocol receving data from popup
func userDidEnterInformation(data: String) {
addJobSum.text = data
}

Answer 1

After the PopupViewController gets dismissed, it gets destroyed and no new instances are able to know what an old instance had as a text value for the Text View.
To fix it - create a string property inside PopupViewController and initialize the Text View's text property with its value inside some method, such as viewDidLoad():
class PopupViewController: UIViewController {
var textData: String?
/* more code */
func viewDidLoad() {
/* more code */
if let data = textData {
openTextView.text = data
}
}
}
Then, you'll have to inject the proper / needed text for textData inside prepare(for:) method (right before it's presented):
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "openSummary" {
let sendingVC = segue.destination as! PopupViewController
sendingVC.delegate = self
// This is the new line to be added:
sendingVC.textData = addJobSum.text
}
}