login_1.swift

@objc private func keyboardWillShow(notification: Notification) {
        if
            let userInfo = notification.userInfo,
            let keyboardSize = (userInfo[UIResponder.keyboardFrameEndUserInfoKey] as? NSValue)?.cgRectValue,
            let duration = (userInfo[UIResponder.keyboardAnimationDurationUserInfoKey] as? NSNumber)?.doubleValue
        {
            if passwordTextField.frame.maxY > view.frame.height - keyboardSize.height {
                UIView.animate(withDuration: duration, animations: { self.imageViewTopConstraint.constant -=
                    keyboardSize.height
                    self.view.layoutIfNeeded()
                })
            }
        }
    }

login_2.swift

@objc private func keyboardWillHide(notification: Notification) {
        if
            let userInfo = notification.userInfo,
            let duration = (userInfo[UIResponder.keyboardAnimationDurationUserInfoKey] as? NSNumber)?.doubleValue
        {
                UIView.animate(withDuration: duration, animations: { self.imageViewTopConstraint.constant =
                    UIDevice.current.orientation == .portrait ? 160 : 40
                    self.view.layoutIfNeeded()
                })
        }
    }