您还可以添加一个点击手势识别器来重新使用键盘。: D

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.

    let recognizer = UITapGestureRecognizer(target: self, action: Selector("handleTap:"))
    backgroundView.addGestureRecognizer(recognizer)
}
    func handleTap(recognizer: UITapGestureRecognizer) {
    textField.resignFirstResponder()
    textFieldtwo.resignFirstResponder()
    textFieldthree.resignFirstResponder()

    println("tappped")
}

viewDidLoad()方法中只有一行代码:

view.addGestureRecognizer(UITapGestureRecognizer(target: view, action: #selector(UIView.endEditing(_:))))

我发现最好的解决方案包括来自@Esqarrouth的接受答案，并进行了一些调整:

extension UIViewController {
    func hideKeyboardWhenTappedAround() {
        let tap: UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: "dismissKeyboardView")
        tap.cancelsTouchesInView = false
        view.addGestureRecognizer(tap)
    }

    func dismissKeyboardView() {
        view.endEditing(true)
    }
}

电话响了。cancelsTouchesInView = false是关键的:它确保UITapGestureRecognizer不会阻止视图上的其他元素接收用户交互。

方法解雇键盘()被更改为稍微不那么优雅的解雇keyboardview()。这是因为在我的项目相当旧的代码库中，有很多次已经使用了dismissKeyboard()(我想这并不少见)，导致编译器问题。

然后，如上所述，这个行为可以在各个视图控制器中启用:

override func viewDidLoad() {
    super.viewDidLoad()
    self.hideKeyboardWhenTappedAround() 
}

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)

下面是关于如何在Xcode 6.1中使用Swift消除键盘的回答:

import UIKit

class ItemViewController: UIViewController, UITextFieldDelegate {

    @IBOutlet var textFieldItemName: UITextField!

    @IBOutlet var textFieldQt: UITextField!

    @IBOutlet var textFieldMoreInfo: UITextField!


    override func viewDidLoad() {
        super.viewDidLoad()

        textFieldItemName.delegate = self
        textFieldQt.delegate = self
        textFieldMoreInfo.delegate = self
    }

                       ...

    /**
     * Called when 'return' key pressed. return NO to ignore.
     */
    func textFieldShouldReturn(textField: UITextField) -> Bool {
        textField.resignFirstResponder()
        return true
    }


   /**
    * Called when the user click on the view (outside the UITextField).
    */
    override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
        self.view.endEditing(true)
    }

}

(此信息的来源)。

斯威夫特3:

扩展选择器作为参数，能够做额外的东西在解散函数和cancelsTouchesInView，以防止扭曲与触摸的其他元素的视图。

extension UIViewController {
    func hideKeyboardOnTap(_ selector: Selector) {
        let tap: UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: selector)
        tap.cancelsTouchesInView = false
        view.addGestureRecognizer(tap)
    }
}

用法:

override func viewDidLoad() {
    super.viewDidLoad()
    self.hideKeyboardOnTap(#selector(self.dismissKeyboard))
}

func dismissKeyboard() {
    view.endEditing(true)
    // do aditional stuff
}