Unable to see multiple marker on google Map

Question

I want to show multiple markers on a google map. My latlng coordinates are fetched from a Parse database but I am not able see marker. My second problem is that I

Answer 1

I see a few problems here.

As @Raghunandan mentioned, you cannot update the UI from doInBackground() so you cannot add markers from there. You can however, make your MarkerOptions objects here, and then attach them to the GoogleMap in your postExecute/or in the Activity that hosts the Google Maps.

In your onPostExecute(), you have not set any Title, or Snippet to your markers. Whenever you are creating your marker, make sure to set your title. Then when the user clicks on the marker, the default behavior shows your rest name as a title. Code will be something like this(as also mentioned by @Inzimam Tariq IT :

MarkerOptions markerOptions = new MarkerOptions();
                markerOptions.position(res)
                .setTitle(restaurantName)
                .icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_GREEN));
                googleMap.addMarker(markerOptions);