Button Triggered Issues

Question

I'm getting data back from secondVC to firstVC and showing it in a text field.

My VC's are FirstVC with a text field and secondVC with a button.

The flow of my VC is when a user clicks on the text field (here text field action Editing Did Begin called) in firstVC then the secondVC will open. And then when the button clicks in secondVC then goes back to firstVC with some data and data will be show in same text field.

So the above is all working fine.

Now I want that the second time when again I click on the text field (now text field contains some data) so then again go to secondVC.

The problem is that now the text field contains data. When I click on it, it doesn't work because of button action property Editing Did Begin.

How to handle this?

Below is my code,

First VC

import UIKit

class firstViewController: UIViewController, UITextFieldDelegate, MyProtocol {

var valueSentFromSecondViewController                   : String?
@IBOutlet weak var myTextField: UITextField!

override func viewDidLoad() {
    super.viewDidLoad()
}
override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
}



@IBAction func myTextFieldACTIONWhenEditingDidBegin(_ sender: Any) {
    myTextField.isUserInteractionEnabled = false
    let secondVC = self.storyboard?.instantiateViewController(withIdentifier: "secondViewController") as! secondViewController

    secondVC.delegate = self
    self.navigationController?.pushViewController(secondVC, animated: true)
}

func setResultsAfterEvaluation(valueSent: String) {
    self.valueSentFromSecondViewController = valueSent
    print(valueSentFromSecondViewController!)
    myTextField.text = valueSent
    //print(valueSent)

}
}

Second VC

import UIKit

protocol MyProtocol {
func setResultsAfterEvaluation(valueSent: String)

}

class secondViewController: UIViewController {
var delegate            :   MyProtocol?
var sentValue           :   String?
override func viewDidLoad() {
    super.viewDidLoad()

}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}

@IBAction func btn(_ sender: Any) {
    sentValue = "Ahtazaz"
    delegate?.setResultsAfterEvaluation(valueSent: sentValue!)
    self.navigationController?.popViewController(animated: true)

}

}

Answer 1

I believe this is a more simple way to do what you are trying to achieve, as it doesn't involve protocols and extra functions. If you have any questions, please ask. :)

First View Controller:

import UIKit
//By declaring a variable outside of any class, it is always active in memory and accessible anywhere.
var textFieldText: String = ""

class ViewController1: UIViewController, UITextFieldDelegate {

@IBOutlet weak var textField1: UITextField!

func textFieldDidBeginEditing(_ textField: UITextField) { 
//textField.resignFirstResponder is used to dismiss the keyboard.  By putting it in this function, it hides the keyboard, which prevents users from entering custom text into your text field.
    textField.resignFirstResponder()
    let VC2 = self.storyboard?.instantiateViewController(withIdentifier: "ViewController2") as! ViewController2
    self.navigationController?.pushViewController(VC2, animated: true) 
}

override func viewDidLoad() {
    super.viewDidLoad()
//This links textField1 on your storyboard to the textFieldDidBeginEditing function.
    textField1.delegate = self
}

override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)
//Every time the view is about to appear, this is called.  This is where we update the text field's text.
    textField1.text = textFieldText
}
}

Second View Controller:

import UIKit

class ViewController2: UIViewController {

@IBOutlet weak var button1: UIButton!
@IBOutlet weak var button2: UIButton!

//If the data you are trying to pass is the button's title, use these two functions.
@IBAction func button1Tapped(_ sender: UIButton) {
    textFieldText = (button1.currentTitle)!
    self.navigationController?.popViewController(animated: true)
}

@IBAction func button2Tapped(_ sender: UIButton) {
    textFieldText = (button2.currentTitle)!
    self.navigationController?.popViewController(animated: true)
} 

//If the data you are trying to pass is not the button's title, use these.
@IBAction func button1Tapped(_ sender: UIButton) {
    textFieldText = "Your Text Here"
    self.navigationController?.popViewController(animated: true)
}

@IBAction func button2Tapped(_ sender: UIButton) {
    textFieldText = "Your Text Here"
    self.navigationController?.popViewController(animated: true)
}
}