类型“Notification.Name”（又名“NSNotification.Name”）没有成员“UIResponder”答案

【问题标题】：Type 'Notification.Name' (aka 'NSNotification.Name') has no member 'UIResponder'类型“Notification.Name”（又名“NSNotification.Name”）没有成员“UIResponder”
【发布时间】：2020-08-11 21:28:48
【问题描述】：

我有这个代码：

        // MARK: - Listen for Keyboard Events and move the screen up upon keyboard is loaded
    NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillChange), name: UIResponder.keyboardWillShowNotification, object: nil)
    NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillChange), name: UIResponder.keyboardWillHideNotification, object: nil)
    NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillChange), name: UIResponder.keyboardWillChangeFrameNotification, object: nil)
}

deinit {
    NotificationCenter.default.removeObserver(self, name: UIResponder.keyboardWillShowNotification, object: nil)
    NotificationCenter.default.removeObserver(self, name: UIResponder.keyboardWillHideNotification, object: nil)
    NotificationCenter.default.removeObserver(self, name: UIResponder.keyboardWillChangeFrameNotification, object: nil)
}

@objc func keyboardWillChange(notification: Notification) {

    guard let keyboardRect = (notification.userInfo?[UIResponder.keyboardFrameEndUserInfoKey] as? NSValue)?.cgRectValue else {
        return
    }
    if notification.name == Notification.Name.UIResponder.keyboardWillShowNotification ||
        notification.name == Notification.Name.UIKeyboardWillChangeFrame {

                view.frame.origin.y = -keyboardRect.height
    }else {
        view.frame.origin.y = 0
    }


}

但是 Xcode 11 一直报错：

类型“Notification.Name”（又名“NSNotification.Name”）在此行中没有成员“UIResponder”：

if notification.name == Notification.Name.UIResponder.keyboardWillShowNotification ||

有人知道怎么解决吗？

感谢您的帮助！

【问题讨论】：

标签： swift5 xcode11 uiresponder

【解决方案1】：

使用

if notification.name == UIResponder.keyboardWillShowNotification ||
    notification.name == UIResponder.keyboardWillChangeFrameNotification {

而不是

if notification.name == Notification.Name.UIResponder.keyboardWillShowNotification ||
    notification.name == Notification.Name.UIKeyboardWillChangeFrame {

如错误中所见，它没有诸如 Notification.Name UIResponder 之类的调用。

【讨论】：

Rica ederim。快乐编码:)