將數據從AppDelegate實時傳遞到ViewController（iOS）Swift 2

Question

我想使用Apple通知創建聊天，我想在收到通知時將數據傳遞到表視圖以對其進行更新，我試圖做一個示例示例來測試如何將數據表單應用程序委托傳遞給viewController，並且它不能正常工作任何人都可以幫我My ViewController代碼

class ViewController: UIViewController {

  var fileDirectory: String = String()
  let delegate = UIApplication.sharedApplication().delegate as! AppDelegate

  override func viewDidLoad() {
      super.viewDidLoad()
      NSNotificationCenter.defaultCenter().addObserver(self, selector: #selector(ViewController.refreshView(_:)), name: "refreshView", object: nil)
  }

  func refreshView(notification: NSNotification) {
      fileDirectory = delegate.filePath
      print("tester")
  }

  override func didReceiveMemoryWarning() {
      super.didReceiveMemoryWarning()
  }
}

我想從appDelegate訪問refreshView函數

Answer 1

您在viewController中的viewDidLoad（）中寫了以下行

NotificationCenter.default.addObserver(self, selector: #selector(ViewController.refreshView), name: "AnyThingYouWant", object: nil)
}

但是，在要調用ViewController.refreshView方法的appDelegate中添加此行

NotificationCenter.default.post(name: "AnyThingYouWant", object: self)
}

如果要在收到通知時調用refreshView方法，請在didReceiveLocal / RemoteNotification方法的上方寫上一行