A UIViewController extension for dismissing keyboard

UIVIewController+HideKeyboard.swift

import UIKit
extension UIViewController {
  func hideKeyboardWhenTappedAround() {
    let tap: UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(UIViewController.dismissKeyboard))
    tap.cancelsTouchesInView = false
    view.addGestureRecognizer(tap)
  }
  
  @objc func dismissKeyboard() {
    view.endEditing(true)
  }
}