@Override protected final void onPostExecute(final List<SessionLatLong> points){
  if (mListener != null) {
    mListener.onSessionLoaded(points);
  }
}

@ Override protected final void onPostExecute ( final List < SessionLatLong > points ) { if ( mListener != null ) { mListener . onSessionLoaded ( points ) ; } }
informs activity on available results by calling mlistener .
