[:en]Swift : How to make a keyboard disappear when finished [:]

[:en]

//
//  ViewController.swift
//  HideKeyboard
//
//  Created by Cambridge  on 10/4/2019.
//  Copyright © 2019 Cambridge . All rights reserved.
//

import UIKit

class ViewController: UIViewController , UITextFieldDelegate{
    
    @IBOutlet weak var studentnamelabel: UITextField!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        //to hide keyboard when tapping on empty space
        self.setupToHideKeyboardOnTapOnView()

    }
    
    
 
}
//put the extension at the bottem of the code also known as "outside" the viewcontroller
extension UIViewController {
    func setupToHideKeyboardOnTapOnView()
    {
        let tap: UITapGestureRecognizer = UITapGestureRecognizer(
            target: self,
            action: #selector(UIViewController.dismissKeyboard))
        
        tap.cancelsTouchesInView = false
        view.addGestureRecognizer(tap)
    }
    
    @objc func dismissKeyboard()
    {
        view.endEditing(true)
    }
}

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