Dismiss The Keyboard - Multiple UITextFields in iOS 7

Question

below you\'ll find my .h & .m files for my primary viewcontroller.

I have 3 questions.

1.) Because I have multiple uitextfields, do I have to set each with

Answer 1

In swift 3 :

 //Dismiss keyboard , When touch outside
 override func touchesBegan(_ touches: Set, with event: UIEvent?)
    {
        self.view.endEditing(true)
    }