如何在打开新页面时隐藏bottomNavigationBar

Navigator.push(
  context,
  MaterialPageRoute(
    fullscreenDialog: true,
    builder: (context) => NewPage(),
  ),
);

Navigator.push(
  context,
  PageRouteBuilder(
    pageBuilder: (context, animation, secondaryAnimation) => NewPage(),
    transitionsBuilder: (context, animation, secondaryAnimation, child) {
      return SlideTransition(
        position: Tween<Offset>(
          begin: Offset(0, 1),
          end: Offset.zero,
        ).animate(animation),
        child: child,
      );
    },
  ),
);

class NavigationBarVisibility extends ChangeNotifier {
  bool _isVisible = true;

  bool get isVisible => _isVisible;

  void hideNavigationBar() {
    _isVisible = false;
    notifyListeners();
  }

  void showNavigationBar() {
    _isVisible = true;
    notifyListeners();
  }
}

// 在打开新页面时调用hideNavigationBar方法隐藏底部导航栏
Provider.of<NavigationBarVisibility>(context, listen: false).hideNavigationBar();