networkContext.getAllLightsCollection().getLights() returns 0 about lifx-sdk-android HOT 4 OPEN

public class FragmentLIFXController extends Fragment implements LFXLightCollectionListener {

@Override
public void onStart() {
  super.onStart();
  Log.d(TAG,"onStart()");

  if(mLIFXContext==null) {
    mLIFXContext=LFXClient.getSharedInstance(getActivity()).getLocalNetworkContext();
    mLIFXContext.connect();

    LFXLightCollection lc=mLIFXContext.getAllLightsCollection();
    lc.addLightCollectionListener(this);
  }
}

@Override
public void lightCollectionDidAddLight(LFXLightCollection arg0,LFXLight arg1) {
    Log.d(TAG,"lightCollectionDidAddLight() - "+arg1.getLabel()+" - "+arg1.getDeviceID());
}

@Override
public void lightCollectionDidChangeColor(LFXLightCollection arg0,LFXHSBKColor arg1) {
    Log.d(TAG,"lightCollectionDidChangeColor()");       
}

@Override
public void lightCollectionDidChangeFuzzyPowerState(LFXLightCollection arg0, LFXFuzzyPowerState arg1) {
   Log.d(TAG,"lightCollectionDidFuzzyPowerState()");        
}

@Override
public void lightCollectionDidChangeLabel(LFXLightCollection arg0, String arg1) {
    Log.d(TAG,"lightCollectionDidChangeLabel()");
}

@Override
public void lightCollectionDidRemoveLight(LFXLightCollection arg0, LFXLight arg1) {
    Log.d(TAG,"lightCollectionDidRemoveLight()");
}
}