Pausing timer when app is in background state Swift

Question

My ViewController.swift

func startTimer() {
    timer = NSTimer().scheduleTimerWithTimerInvterval(1.0,target: self,selctor: Selector(\"couting\"),userinfo: n         


        

Answer 1

Accepted answer by @Suresh in Swift 3

Set an observer listening to when the application did enter background in your ViewController's viewDidLoad() method.

 NotificationCenter.default.addObserver(self, selector: #selector(myObserverMethod), name:NSNotification.Name.UIApplicationDidEnterBackground, object: nil)

Add the below function to receive the notification.

 func myObserverMethod(notification : NSNotification) {

   print("Observer method called")

  //You may call your action method here, when the application did enter background.
  //ie., self.pauseTimer() in your case.

}