ios - keyboardWillHide通知故障

我有：

override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)

    NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillShow), name: NSNotification.Name.UIKeyboardWillShow, object: nil)
    NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillHide), name: NSNotification.Name.UIKeyboardWillHide, object: nil)

}

以及：

func keyboardWillShow(notification: NSNotification) {

    if (self.view.center.y == maxPointY){
        self.view.frame.origin.y -= maxPointY/2
    }
}

func keyboardWillHide(notification: NSNotification) {

    self.view.frame.origin.y += maxPointY/2
}

问题是，当我单击一个应该弹出键盘的文本字段时，keyboardWillHide会被调用。
我也有这个：

func textFieldShouldReturn(_ textField: UITextField) -> Bool {
    usernameTextField.resignFirstResponder()
    passwordTextField.resignFirstResponder()
    textField.resignFirstResponder()
    return true
}

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

最佳答案

试试这个：斯威夫特3
它在我身边起作用。我想你没有经过辩论就通过了选择器

 NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillShow(notification:)), name: NSNotification.Name.UIKeyboardWillShow, object: nil)
NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillHide(notification:)), name: NSNotification.Name.UIKeyboardWillHide, object: nil)

选择器

func keyboardWillShow(notification: NSNotification) {
    }

func keyboardWillHide(notification: NSNotification) {
     }

代表

func textFieldShouldReturn(_ textField: UITextField) -> Bool {
        textField.resignFirstResponder()
        return true
    }

关于ios - keyboardWillHide通知故障，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/44838604/