Showing multiple 'GMSMarker' markers on Google maps - swift

Question

I am trying to show multiple location using Google maps, the code showing only one location. I am using for loop. I checked the code using MKMapView and it's working.
Here is the code:
let dict = [self.jsonElement]
for dicts in dict {
let latiCon = (dicts.value(forKey: "lati") as! NSString).doubleValue
let longiCon = (dicts.value(forKey: "longi") as! NSString).doubleValue
// Create a GMSCameraPosition that tells the map to display the
// coordinate -33.86,151.20 at zoom level 6.
let camera = GMSCameraPosition.camera(withLatitude: latiCon, longitude: longiCon, zoom: 6.0)
let mapView = GMSMapView.map(withFrame: CGRect.zero, camera: camera)
self.view = mapView
// Creates a marker in the center of the map.
let marker = GMSMarker()
marker.position = CLLocationCoordinate2D(latitude: latiCon, longitude: longiCon)
marker.title = "Sydney"
marker.snippet = "Australia"
marker.map = mapView
}
I need to show multiple locations as I said, I have a look to relative answers but I did not find anything match with my question.

Answer 1

this code
let camera = GMSCameraPosition.camera(withLatitude: latiCon, longitude: longiCon, zoom: 6.0)
let mapView = GMSMapView.map(withFrame: CGRect.zero, camera: camera)
self.view = mapView
makeing a new mapView every time in loop so it's natural what you get.
a new mapview + one marker .
move this code outside loop or delete it if you already have a mapview declared before.