Android Studio Google Maps Everytime a marker is clicked a radius pops up on it. Upon clicking a new marker, it is duplicating making mulitple. How to make it so there is only one marker at a time on each click? mMap.setOnMarkerClickListener(new GoogleMap.OnMarkerClickListener() { @Override public boolean onMarkerClick(Marker marker) { end_latitude = marker.getPosition().latitude; end_longitude = marker.getPosition().longitude; markerOptions.position(new LatLng(end_latitude, end_longitude)); double radiusSize = 700.0; //red outline int strokeColor = 0xffff0000; //opaque red fill int shadeColor = 0x44ff0000; Circle circle = mMap.addCircle(new CircleOptions() .center(new LatLng(end_latitude, end_longitude)) .radius(80000)); return false; } });