ios 类型“NSNotification.Name”没有成员“keyboardDidShowNotification”
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Type 'NSNotification.Name' has no member 'keyboardDidShowNotification'
提问by Krunal
I'm getting this error with Swift 4.2
我在 Swift 4.2 中遇到此错误
Type 'NSNotification.Name' has no member 'keyboardDidShowNotification'
类型“NSNotification.Name”没有成员“keyboardDidShowNotification”
Here is my code:
这是我的代码：
NotificationCenter.default.addObserver(self, selector: #selector(self.keyboardDidShow(notification:)), name: NSNotification.Name.keyboardDidShowNotification, object: nil)
Following one was working fine with Swift 4 but not with Swift 4.2
以下一个在 Swift 4 上运行良好，但在 Swift 4.2 上运行不正常
NotificationCenter.default.addObserver(self, selector: #selector(self.keyboardDidShow(notification:)), name: NSNotification.Name.UIKeyboardDidShow, object: nil)
Apple document Ref: NSNotification.Name.keyboardDidShowNotification
回答by Rakesha Shastri
I believe you use it like this now.
我相信你现在这样使用它。
NotificationCenter.default.addObserver(
self,
selector: #selector(self.keyboardDidShow(notification:)),
name: UIResponder.keyboardDidShowNotification, object: nil)
/* You can substitute UIResponder with any of it's subclass */
It is listed in UIResponderdocas a Type Property.
它在UIResponderdoc 中列为Type Property。
回答by Daniel
Working on swift 4,2
在 swift 4,2 上工作
func bindToKeyboard(){
NotificationCenter.default.addObserver(self, selector: #selector(UIView.keyboardWillChange(_:)), name:
UIApplication.keyboardWillChangeFrameNotification
, object: nil)
}
回答by Rakshitha Muranga Rodrigo
I have used just the UIResponder.keyboardWillHideNotificationexcept using NSNotification.Name.. This is working in SWIFT 5
我只使用了UIResponder.keyboardWillHideNotificationexcept using NSNotification.Name.。这在SWIFT 5 中有效
NotificationCenter.default.addObserver(self, selector: #selector(KeyboardLayoutConstraint.keyboardWillShowNotification(_:)), name: UIResponder.keyboardWillShowNotification, object: nil)
NotificationCenter.default.addObserver(self, selector: #selector(self.keyboardWillHideNotification(_:)), name: UIResponder.keyboardWillHideNotification, object: nil)
回答by Badr
Some small details added to this answer:
此答案中添加了一些小细节：
func setupViews(){
// Keyboard notification observers
NotificationCenter.default.addObserver(self, selector: #selector(self.keyboardWillShow(notification:)), name: UIResponder.keyboardWillShowNotification, object: nil)
NotificationCenter.default.addObserver(self, selector: #selector(self.keyboardWillHide(notification:)), name: UIResponder.keyboardWillHideNotification, object: nil)
}
@objc func keyboardWillShow(notification: NSNotification) {
if let keyboardSize = (notification.userInfo?[UIResponder.keyboardFrameBeginUserInfoKey] as? NSValue)?.cgRectValue {
// Do something
}
}
@objc func keyboardWillHide(notification: NSNotification) {
// Do something
}
