添加这个扩展到你的ViewController:

  extension UIViewController {
// Ends editing view when touches to view 
  open override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
    super.touchesBegan(touches, with: event)
    self.view.endEditing(true)
  }
}

另一种可能是在你可能需要触摸的所有视图下面添加一个没有内容的大按钮。 给它一个名为:

@IBAction func dismissKeyboardButton(sender: AnyObject) {
    view.endEditing(true)
}

对我来说，手势识别器的问题是，它也捕捉了我想通过tableViewCells接收的所有触摸。

如何解散键盘时，你点击任何地方关闭它

 //Setup dismiss keyboard gesture
 let tap = UITapGestureRecognizer(target: self, action: #selector(UIInputViewController.dismissKeyboard))

     view.addGestureRecognizer(tap)
 }
 //Calling this function when the tapped
 @objc func dismissKeyboard() {

    view.endEditing(true)
 }

这一行代码辞去了UIView中所有UITextField的键盘

self.view.endEditing(true)

斯威夫特3: 关闭键盘的最简单方法:

  //Dismiss keyboard method
    func keyboardDismiss() {
        textField.resignFirstResponder()
    }

    //ADD Gesture Recignizer to Dismiss keyboard then view tapped
    @IBAction func viewTapped(_ sender: AnyObject) {
        keyboardDismiss()
    }

    //Dismiss keyboard using Return Key (Done) Button
    //Do not forgot to add protocol UITextFieldDelegate 
    func textFieldShouldReturn(_ textField: UITextField) -> Bool {
        keyboardDismiss()

        return true
    }

一个简单的方法是选择文本字段并使用方法enditing (true)

e.g

exampleTextField.endEditing(true)