Access variable of Viewcontroller in AppDelegate

Question

As the question says, I am trying to access a variable of my ViewController inside my AppDelegate.swift.

in func applicationWillTerminate(_ application: UIApplication){}, I want to access a WebSocket object inside my ViewController and do socket.disconnect(), so that the socket is disconnecting when my application is going to get shut downed.

I already searched the net for quite a bit but nothing seemed to help me in this situation.

how do you present the viewController that you want to access? are there any navigationControllers, or are they just presented? — Milan Nosáľ, Jan 17 '18 at 20:10

score 1 · Accepted Answer · edited Jan 23 '18 at 20:46

1

Try to add an observer in your view controller:

NotificationCenter.default.addObserver(self,
      selector: #selector(applicationWillTerminate),
      name: .UIApplicationWillTerminate,
      object: nil)

using callback:

@objc func applicationWillTerminate() {
    // Disconnect socket

}

Also I think everything will be disconnected when app terminates

edited Jan 23 '18 at 20:46

Milan Nosáľ

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answered Jan 17 '18 at 20:11

Shehata Gamal

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It kind of gets disconnect but when i just terminate the app, an error occures on my server endpoint. I just want a clean disconnect upon App termination. – Dominik Brandstetter Jan 23 '18 at 08:19
1

Never mind now, the problem seems to lie with my wsserver and not the client. Your solution is right. – Dominik Brandstetter Jan 23 '18 at 08:49

Access variable of Viewcontroller in AppDelegate

1 Answers1