快速未通知NotificationCenter的所有人员 [英] NotificationCenter obersever not called in swift 4

问题描述

我正在尝试从appdelegate发布通知NotificationCenter并在另一个视图中接收通知，但未收到通知.

i am trying to post notification NotificationCenter from appdelegate and receive notification in another view but notification not received.

发布通知:-

func xmppStream(_ sender: XMPPStream, didReceive message: XMPPMessage)
{
    print("did receive message  isss-->\(message)")

    NotificationCenter.default.post(name: Notification.Name("MessageReceived"), object: message)

}

viewdidload中收到的通知:-

Received Notification in viewdidload :-

 NotificationCenter.default.addObserver(self, selector: #selector(self.messagereceived(notification:)), name: Notification.Name("MessageReceived"), object: nil)

方法:-

@objc func messagereceived(notification:Notification)
{
    let message = notification.object as? XMPPMessage
    print("chat conversion message is----->\(message)")
}

未调用我的"收到消息"方法.

所以任何人都有与此相关的解决方案，然后请帮助我.

so any one have solution related to this then please help me.

谢谢.

推荐答案

从以下位置更改通知帖子

Change the notification post from

 NotificationCenter.default.post(name: Notification.Name("MessageReceived"), object: message)

到

NotificationCenter.default.post(Notification(name: Notification.Name(rawValue: "MessageReceived"),object: message))

和观察者

NotificationCenter.default.addObserver(self, selector: #selector(self.messagereceived(notification:)), name: Notification.Name("MessageReceived"), object: nil)

到

NotificationCenter.default.addObserver(self, selector: #selector(self.messagereceived(notification:)), name: NSNotification.Name(rawValue: "MessageReceived"), object: nil)

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