     }
     
     func test(completionHandler: ((UIBackgroundFetchResult) -> Void)?) {
-        sendLocalNotif("尝试获取数据", badge: -1)
+        sendLocalNotif("\(selectedCity()):尝试获取数据", badge: -1)
         let request = createRequest()
         if session == nil {
             session = sharedSessionForIOS()

        // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
        UIApplication.sharedApplication().setKeepAliveTimeout(600) { () -> Void in
            NSLog("voip called...")
            self.fetchNewData()
        }
    }


    private var time: String? = "Invalid"
    var wcSession: WCSession?
    private var session: NSURLSession?
    private var bgTaskID: UIBackgroundTaskIdentifier? = nil
    
    func startWCSession() {
        if (WCSession.isSupported() && wcSession == nil) {
