UIKeyboardBoundsUserInfoKey is deprecated, what to use instead?

Question

I\'m working on an iPad app using 3.2 sdk. I\'m dealing with obtaining the keyboard size to prevent my textfields from hidding behind it.

I\'m getting a Warning in

Answer 1

Its worked like this

This is the constraint of the save button bottom

@IBOutlet weak var saveBtnBottom: NSLayoutConstraint!
@IBOutlet weak var nameText: UITextField!

Inside viewDidLoad

NotificationCenter.default.addObserver(self, selector: #selector(keyBoardWillShow(notification:)), name: UIResponder.keyboardWillShowNotification, object: nil)
NotificationCenter.default.addObserver(self, selector: #selector(keyBoardWillHide(notification:)), name: UIResponder.keyboardWillHideNotification, object: nil)
nameText.delegate = self

This is the functions we need

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


@objc func keyBoardWillShow(notification: Notification){
    if let userInfo = notification.userInfo as? Dictionary{
        let frame = userInfo[UIResponder.keyboardFrameEndUserInfoKey]
        let keyBoardRect = frame?.cgRectValue
        if let keyBoardHeight = keyBoardRect?.height {
            self.saveBtnBottom.constant = keyBoardHeight 

            UIView.animate(withDuration: 0.5, animations: {
                self.view.layoutIfNeeded()
            })
        }
    }
}

@objc func keyBoardWillHide(notification: Notification){
    self.saveBtnBottom.constant = 30.0
    UIView.animate(withDuration: 0.5, animations: {
        self.view.layoutIfNeeded()
    })
}