How do I get the return key to perform the same action as a button press in Swift?

Question

I want to know how you allow an action to be made by either pressing the return key on the software keyboard or by tapping a UIButton.

The UI button is already set u

Answer 1

Here is a complete example, with both:

1. button-action to write and also to clear label and text when pressing button repeatedly it alternates both actions

2. return-in-keyboard when pressing key it triggers action and also resigns first responder

class ViewController: UIViewController, UITextFieldDelegate {
    
    @IBOutlet weak var textField1: UITextField!
    @IBOutlet weak var label1: UILabel!
    
    var buttonHasBeenPressed = false
    
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
        textField1.delegate = self
    }
    
    
    @IBAction func buttonGo(_ sender: Any) {
        performAction()
    }
    
    
    
    
    
    
    func textFieldShouldReturn(_ textField: UITextField) -> Bool {
        textField.resignFirstResponder()
        performAction()
        return true
    }
    
   
    func performAction() {
        buttonHasBeenPressed = !buttonHasBeenPressed
        
        if buttonHasBeenPressed == true {
            label1.text = textField1.text
        } else {
            textField1.text = ""
            label1.text = ""
        }
        
    }
    
}