Why do the markers not appear?

Question

What I have: A RecyclerView with images of Restaurants, Bars, etc, that when are clicked take you to a map

What I want: That when they be clicked take you to a map with

Answer 1

I don't see any Marker in your code, but just to try it, create and add a Marker like this and see if it is on your map

MarkerOptions options = new MarkerOptions();
options.position(latitude,longitude);options.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_RED));
options.title("Restaurante");
options.snippet("Burger King");
mMap.addMarker(options);

Edit

Try to change this code

MarkerOptions options = new MarkerOptions();   //options.position(LatLng);options.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_RED));
            options.title("Restaurante");
            options.snippet("Burger King");
            mMap.addMarker(options);
            markerOptions.position(latLng);
            markerOptions.title(placeName + " : " + vicinity);
            mMap.addMarker(markerOptions);//esto añade los marcadores
            markerOptions.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_RED));//aqui se le pone el color a los marcadores

To this one

MarkerOptions options = new MarkerOptions();
options.position(latLng);
options.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_RED));
options.title(placeName + " : " + vicinity);
mMap.addMarker(options);

Answer 2

You should create the MarkerOption object like this:
MarkerOptions myLocationMarker = new MarkerOptions().position(lat,long);