swift3.0 點擊UIScrollView中輸入框以外的區域關閉鍵盤

經過點擊事件實現關閉鍵盤

scrollView: UIScrollView!
title_textField: UITextField!

let hideKeyboardTapGesture = UITapGestureRecognizer(target: self, action: #selector(hideKeyboardTapGesture(sender:)))
scrollView.isUserInteractionEnabled = true
scrollView.addGestureRecognizer(hideKeyboardTapGesture)

關閉實現

func hideKeyboardTapGesture(sender: UITapGestureRecognizer){
        title_textField.resignFirstResponder()
}