问每次使用NavigationDrawer时不加载分片的内容

EN

public class FahrplanFragment extends Fragment {

private ListView listView;
private Resources res;
private String[] plans;
private ArrayAdapter<String> adapter;

public FahrplanFragment() {
    // Required empty public constructor
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    return inflater.inflate(R.layout.fragment_fahrplan, container, false);
}

@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);

    listView = (ListView) getActivity().findViewById(R.id.listview_fahrplan);
    res = getResources();
    plans = res.getStringArray(R.array.plans);
    adapter = new ArrayAdapter<String>(getActivity(), android.R.layout.simple_list_item_1,
            android.R.id.text1, plans);
    listView.setAdapter(adapter);
}
}