MapTableViewController-3.swift

func loadNotificationList() {
let url = URL(string: "http://140.121.197.197:3000/getUserNotificationList?facebook_token="+userData!.facebookAccessToken)!

let task = URLSession.shared.dataTask(with: url) { (data, response , error) in
    let decoder = JSONDecoder()
    decoder.dateDecodingStrategy = .iso8601

    if let data = data, let results = try?
        decoder.decode(NotificationListData.self, from: data)
    {
        print("json load success")
        print(results)
        self.mapView.removeAnnotations(self.mapView.annotations)
        self.mapView.removeOverlays(self.mapView.overlays)
        self.notificationListData = results
        for var i in results.data {
            self.addPointAndCircleToMapView(lat: i.data.lat, lon: i.data.lon, radius: i.data.radius, content: i.data.content)
        }
    } else {
        print("error")
    }
}

task.resume()
}