ios - 使用键盘时使文本字段向上滑动 swift 5

Question

我试图让文本字段 txtAdd 在键盘出现时向上滑动，但我不太确定该怎么做。

这是将项目添加到列表的代码:

@IBAction func submitBntFunc(_ sender: Any) {
    if let text = txtAdd.text{
             if text == ""{
                 return
             }
             txtAdd.text = ""
             txtAdd.resignFirstResponder()
        return txtField.text.append("\(text) \n")

         }

}

我尝试了下面的代码，但它并没有真正起作用。

guard let keyboardSize = userInfo[UIKeyboardFrameEndUserInfoKey] as? NSValue else {return}

Answer 1

尝试使用此代码

var originButton : CGFloat?

override func viewDidLoad()
{
     originButton = self.YOURBUTTON.frame.origin.y
     NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillShow), name: UIResponder.keyboardWillShowNotification, object: nil)
     NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillHide), name: UIResponder.keyboardWillHideNotification, object: nil)

}

@objc func keyboardWillShow(notification: NSNotification) {
    if let keyboard = ((notification.userInfo?[UIResponder.keyboardFrameBeginUserInfoKey] as? NSValue)?.cgRectValue) {
        if self.view.frame.origin.y == 0 {
            self.YOURBUTTON.frame.origin.y -= keyboard.height

        }
    }
}

@objc func keyboardWillHide(notification: NSNotification) {
    if self.YOURBUTTON.frame.origin.y != originButton {
        self.YOURBUTTON.frame.origin.y = originButton!
    }
}