Создание ToolBar в Fragment

public class MainGridActivity extends AppCompatActivity {
 
    private MainGridFragment mainGridFragment;
    private FragmentManager fragmentManager;
    private FragmentTransaction fragmentTransaction;
 
    private final String MAIN_DRID_FRAGMENT_TAG = "MAIN_DRID_FRAGMENT_TAG";
 
 
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        onInflateActivity();
 
 
 
    }
 
 
 
    private void onInflateActivity(){
        fragmentManager = getSupportFragmentManager();
        mainGridFragment = (MainGridFragment) fragmentManager.findFragmentByTag(MAIN_DRID_FRAGMENT_TAG);
        if(mainGridFragment == null){
            mainGridFragment = new MainGridFragment();
            fragmentManager.beginTransaction()
                    .add(R.id.main_grid_conteiner, mainGridFragment, MAIN_DRID_FRAGMENT_TAG)
                    .commit();
 
        }
    }
}

public class MainGridFragment extends Fragment{
 
    private AppCompatActivity appCompatActivity;
 
 
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    View v = inflater.inflate(R.layout.main_grid_list, null);
    setToolBar();
   return v;
}
 
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
    inflater.inflate(R.menu.main_grid_menu, menu);
    super.onCreateOptionsMenu(menu, inflater);
}
 
 
public Toolbar generateToolBar(){
    LayoutInflater layoutInflater = getActivity().getLayoutInflater();
    View v = layoutInflater.inflate(R.layout.main_tool_bar, null);
 
    return (Toolbar)v;
}
 
private void setToolBar(){
    appCompatActivity = (AppCompatActivity) getActivity();
    appCompatActivity.setSupportActionBar(generateToolBar());
 
    setHasOptionsMenu(true);
}
}

ActionBar toolbar = ((AppCompatActivity) getActivity()).getSupportActionBar();