home_page.dart

Widget _currentWidget = HomeWidget();

  void _onItemTapped(int index) {
    setState(() {
      _selectedIndex = index;
      switch (index) {
        case 0:
          _currentWidget = HomeWidget();
          break;
        case 1:
          _currentWidget = SearchWidget();
          break;
        case 2:
          _currentWidget = ProfileWidget();
          break;
      }
    });
  }