let reachability = Reachability.reachabilityForInternetConnection()

    reachability!.whenReachable = { reachability in

        if reachability.isReachableViaWiFi() {

            let alertController = UIAlertController(title: "Alert", message: "Reachable via WiFi", preferredStyle: .Alert)



            let defaultAction = UIAlertAction(title: "OK", style: .Default, handler: nil)

            alertController.addAction(defaultAction)



            self.presentViewController(alertController, animated: true, completion: nil)



        }

        else {

            let alertController = UIAlertController(title: "Alert", message: "Reachable via Cellular", preferredStyle: .Alert)



            let defaultAction = UIAlertAction(title: "OK", style: .Default, handler: nil)

            alertController.addAction(defaultAction)



            self.presentViewController(alertController, animated: true, completion: nil)

        }

    }

    reachability!.whenUnreachable = { reachability in

        let alertController = UIAlertController(title: "Alert", message: "Please connect to internet", preferredStyle: .Alert)



        let defaultAction = UIAlertAction(title: "OK", style: .Default, handler: nil)

        alertController.addAction(defaultAction)



        self.presentViewController(alertController, animated: true, completion: nil)

    }



    reachability!.startNotifier()