使用Swift触摸任意位置以关闭iOS键盘

Question

我一直在寻找这个，但似乎找不到。我知道如何使用来关闭键盘，Objective-C但是我不知道如何使用Swift？有人知道吗？

Answer 1

有关以下有关如何使用Swift在Xcode 6.1中关闭键盘的问题的答案：

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)

    }

}

Answer 2

Swift 4工作

如下创建扩展名并hideKeyboardWhenTappedAround()在Base视图控制器中调用。

//

//  UIViewController+Extension.swift

//  Project Name

//

//  Created by ABC on 2/3/18.

//  Copyright © 2018 ABC. All rights reserved.

//

import UIKit

extension UIViewController {

    func hideKeyboardWhenTappedAround() {

        let tapGesture = UITapGestureRecognizer(target: self, 

                         action: #selector(hideKeyboard))

        view.addGestureRecognizer(tapGesture)

    }

    @objc func hideKeyboard() {

        view.endEditing(true)

    }

}