Text field is permanently in the second view controller upon segue - swift

Question

I have been working on an app that allows multiple text fields from the first view controller pass over to the second view controller upon pressing a button. However, the text fields are permanently in the second view controller when I only want them to be if the button is pressed. Here is the code for the first view controller! Any help is greatly appreciated.
class ViewController: UIViewController {
#IBOutlet weak var textField: UITextField!
#IBOutlet weak var textField1: UITextField!
#IBAction func buttonTwo(_ sender: Any) {
if textField1.text != "" {
performSegue(withIdentifier: "segue", sender: self)
}
}
#IBAction func buttonOne(_ sender: Any) {
if textField.text != "" {
performSegue(withIdentifier: "segue", sender: self)
}
}
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
var secondController = segue.destination as! SecondViewController
secondController.myString1 = textField1.text!
secondController.myString = textField.text!
}
}
Here is the code in the second view controller:
class SecondViewController: UIViewController {
#IBOutlet weak var label: UILabel!
#IBOutlet weak var label1: UILabel!
var myString = String()
var myString1 = String()
override func viewDidLoad() {
super.viewDidLoad()
label.text = myString
label1.text = myString1
// Do any additional setup after loading the view.
}
}
Image of storyboard

Answer 1

This happens because, prepare for segue will be called every time you perform some segue action.
You should manage to have a bool variable that helps you track, if any button is clicked or not, if the segue is performed from the click of the button, then only you will have to set the text while preparing for segue.
here is your updated viewController
class ViewController: UIViewController {
#IBOutlet weak var textField: UITextField!
#IBOutlet weak var textField1: UITextField!
var isButtonClicked: Bool = false
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
/*reset isButtonClicked to false, when you back from second viewController */
isButtonClicked = false
}
#IBAction func buttonTwo(_ sender: Any) {
if textField1.text != "" {
isButtonClicked = true
performSegue(withIdentifier: "segue", sender: self)
}
}
#IBAction func buttonOne(_ sender: Any) {
if textField.text != "" {
isButtonClicked = true
performSegue(withIdentifier: "segue", sender: self)
}
}
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if isButtonClicked {
var secondController = segue.destination as! SecondViewController
secondController.myString1 = textField1.text!
secondController.myString = textField.text!
}
}
}
Try and share your results.