通知传值三步

发送通知:

let dic = ["参数名":  "参数"]
NotificationCenter.default.post(name: NSNotification.Name("notiname"), object: self, userInfo: dic)

监听通知:

NotificationCenter.default.addObserver(self, selector: #selector(notiaction(note:)), name: NSNotification.Name(rawValue:"notiname"), object: nil)

@objc func notiaction(note: NSNotification){
     print(note.userInfo! as NSDictionary)
}

释放监听通知:

NotificationCenter.default.removeObserver(self)