Exchange between Android cards v2 fragment and list of fragments

I want to be able to switch between a list fragment and a map fragment by the user by clicking the action bar button. Currently, I can exchange them among themselves just fine, but I came across a null pointer when trying to get the actual GoogleMap object from the fragment. When I try to move the camera, it does not move because the GoogleMap object is null and skips this code. I'm not sure if this is due to the fact that I never created the Snippet from xml, but used only the code? My code is as follows:

public class MapFragment extends SherlockMapFragment {

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        View root = super.onCreateView(inflater, container, savedInstanceState);
        return root;
    }

}

    @Override
    public void swapFragments() {
        FragmentManager fm = getSupportFragmentManager();
        FragmentTransaction transaction = fm.beginTransaction();
        if (listFragment.isVisible()) {
            sm.setTouchModeAbove(SlidingMenu.TOUCHMODE_MARGIN);
            transaction.replace(R.id.root, mapFragment);
        } else {
            sm.setTouchModeAbove(SlidingMenu.TOUCHMODE_FULLSCREEN);
            transaction.replace(R.id.root, listFragment);
        }
        transaction.commit();
    }

    @Override
    public void setupMapFragment() {
        mapFragment = new MapFragment();
        mMap = mapFragment.getMap();
        if (mMap != null) {
            mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(
                    new LatLng(BuzzbabaApplication.latitude,
                            BuzzbabaApplication.longitude), 14));
        }
    }