To add and remove a marker as an map overlay :
Add markers to the map by following these steps –
MarkerOptions markerOptions = new MarkerOptions().position(point).icon(IconFactory.getInstance(this).fromResource(R.drawable.ic_android));
markerOptions.setTitle("Marker");
markerOptions.setSnippet("This is a Marker");
Marker marker = mapplsMap.addMarker(markerOptions);
To remove a marker overlay :
mapplsMap.removeMarker(marker)