Android : Android : Change fragment on grid view item click

I'm trying to implement a calendar for Android. So I have a fragment which represents the calendar(a gridview) and I try to change the current fragment by clicking on an item of the grid. So I've tried to put a setOnItemClickListener on the gridview :

 public class CalendarFragment extends Fragment implements View.OnClickListener { 
    private GridView calendarView;
    private GridCellAdapter adapter;  

    @Override
    public View onCreateView( LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState ) {

        View rootView = inflater.inflate( R.layout.fragment_calendar, container, false );        

        calendarView = (GridView) rootView.findViewById( R.id.calendar );
        calendarView.setOnItemClickListener( new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick( AdapterView<?> parent, View view, int position, long id ) {
                Fragment fragment = new DayCalendarFragment();
                FragmentManager fragmentManager = getFragmentManager();
                fragmentManager.beginTransaction().replace( R.id.frame_container, fragment )
               .addToBackStack( null ).commit();

            }
        } );

        adapter = new GridCellAdapter( getActivity(), R.id.calendar_day_gridcell, month, year );
        adapter.notifyDataSetChanged();
        calendarView.setAdapter( adapter );

        return rootView;
   }
}

But this doesn't work, I don't have any error but nothing happen when I click on it. I also tried to put the setOnItemClickListener in the onCreate method but it's the same. My problem is similar to this one : replace fragment on click of grid view item

Can you help me pls ?