Question

我想在点击屏幕上的任何位置时关闭键盘。为此，我使用了touchbegan方法，但没有调用此方法。

Answer 1

您需要指定UITapGestureRecogniser来查看和关闭键盘。

在viewdidLoad（）

中

let tap = UITapGestureRecognizer.init(target: self, action: #selector(self.dismissKeybord(_:)))
        tap.numberOfTapsRequired = 1
        self.view.addGestureRecognizer(tap)

在dismissKeybord

func dismissKeybord(_ sender:UITapGestureRecognizer) {
        self.view.endEditing(true)
}

Answer 2

为我工作。显示键盘与textfields的联系。隐藏其他所有内容。

class LoginController: UIViewController, UITextFieldDelegate {

    @IBOutlet weak var userLogin: UITextField!
    @IBOutlet weak var userPassword: UITextField!

    override func viewDidLoad() {

      userLogin.delegate = self
      userPassword.delegate = self

      //For scrolling the view if keyboard on
      NotificationCenter.default.addObserver(self, selector: #selector(LoginController.keyboardWillShow),
                                             name: NSNotification.Name.UIKeyboardWillShow, object: nil)
      NotificationCenter.default.addObserver(self, selector: #selector(LoginController.keyboardWillHide),
                                             name: NSNotification.Name.UIKeyboardWillHide, object: nil)

      super.viewDidLoad()
    }

    // OTHER METHODS

    var keyBoardAlreadyShowed = false //using this to not let app to scroll view
    //if we tapped UITextField and then another UITextField

    func keyboardWillShow(notification: NSNotification) {
      if !keyBoardAlreadyShowed {
         view.frame.origin.y -= 50
         keyBoardAlreadyShowed = true
      }
    }

    func keyboardWillHide(notification: NSNotification) {
      view.frame.origin.y += 50
      keyBoardAlreadyShowed = false
    }

    override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
      view.endEditing(true)
    }
}

您需要设置delegates和observers

Answer 3

如果您的触摸不被其他视图吃掉，那么我想这会起作用

 override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
            if touches.first != nil {
                view.endEditing(true)
        }
   }

Answer 4

斯威夫特3： -

override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
        self.view.endEditing(true)
    }

Answer 5

最近我的案子很有用。也应该适合你。

创建 UITapGestureRecognizer 。
在以下代码中 endEditing 的选择器方法中，只需调用 self.view.endEditing（true）即可。

（请注意，参数true是动画的值）

class MyViewController: UIViewController {

    override func viewDidLoad() {

        super.viewDidLoad()

        let tapGestureRecognizer = UITapGestureRecognizer(target: self, action:#selector(endEditing))
        tapper.cancelsTouchesInView = false
        self.view.addGestureRecognizer(tapGestureRecognizer)
    }

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

TouchBegan方法无法在swift3中运行

5 个答案: