UIViewController extension to dismiss the keyboard while tapping on the background

dismiss_keyboard_on_tap_swift.md

Dismiss keyboard by tapping on view. Swift 3.

extension UIViewController {
    func dismissKeyboardOnTap() {
        let tap: UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(UIViewController.dismissKeyboard))
        view.addGestureRecognizer(tap)
    }
    
    func dismissKeyboard() {
        view.endEditing(true)
    }
    
// Call using:
// self.dismissKeyboardOnTap() in your viewDidLoad()