How do I move marker along with moving of Google Map in iOS?

I am displaying a marker in a particular place, along with displaying the current address in the address label on Google Maps.

Now, I want to change the location by moving the Google Map, but the problem is that when I am moving the map, I should simultaneously move the marker along with the map, and I should display the address of that location in the address label.

How can I do that?

I tried this:

let destinationMarker = GMSMarker(position: self.destinationLocation.coordinate)

let image = UIImage(named:"sourcemarker")
destinationMarker.icon = image
destinationMarker.draggable = true = self.viewMap
//viewMap.selectedMarker = destinationMarker
destinationMarker.title = "hi"
destinationMarker.userData = "changedestination"

func mapView(mapView: GMSMapView, didEndDraggingMarker marker: GMSMarker)
    if marker.userData as! String == "changedestination"
        self.destinationLocation = CLLocation(latitude: marker.position.latitude, longitude: marker.position.longitude)
        self.destinationCoordinate = self.destinationLocation.coordinate


  • // UpdteLocationCoordinate
        func updateLocationoordinates(coordinates:CLLocationCoordinate2D) {
            if destinationMarker == nil
                destinationMarker = GMSMarker()
                destinationMarker.position = coordinates
                let image = UIImage(named:"destinationmarker")
                destinationMarker.icon = image
       = viewMap
                destinationMarker.appearAnimation = kGMSMarkerAnimationPop
                destinationMarker.position =  coordinates
        // Camera change Position this methods will call every time
        func mapView(mapView: GMSMapView, didChangeCameraPosition position: GMSCameraPosition) {
            let destinationLocation = CLLocation()
            if self.mapGesture == true
                destinationLocation = CLLocation(latitude:,  longitude:
                destinationCoordinate = destinationLocation.coordinate