我正在尝试使用TextSpan上的TapGestureRecognizer在flutter中的auth页面之间添加导航。一切都设置好了，但单击的文本仍然没有导航到首选页面。
登录用户界面的一部分，我在其中使用TapGestureRecognizer：

RichText(
                      text: TextSpan(
                          text: 'No account',
                          style: TextStyle(color: Colors.black),
                          children: [
                        TextSpan(
                            recognizer: TapGestureRecognizer()
                              ..onTap = () => widget.onClickedSignUp,
                            text: 'Click Here',
                            style: TextStyle(
                                decoration: TextDecoration.underline,
                                color: Colors.black))
                      ]))

登录的第一部分。dart：

class LoginScreen extends StatefulWidget {
  final VoidCallback onClickedSignUp;

  const LoginScreen({Key? key, required this.onClickedSignUp})
      : super(key: key);

  @override
  State<LoginScreen> createState() => _LoginScreenState();
}

class _LoginScreenState extends State<LoginScreen> {
  TextEditingController emailController = TextEditingController();
  TextEditingController passwordController = TextEditingController();
  final navigatorKey = GlobalKey<NavigatorState>();
  final formKey = GlobalKey<FormState>();

  @override
  void dispose() {
    emailController.dispose();
    passwordController.dispose();
    super.dispose();
  }

auth.dart:

class _AuthPageState extends State<AuthPage> {
  bool isLogin = true;
  @override
  Widget build(BuildContext context) => isLogin
      ? LoginScreen(onClickedSignUp: toggle)
      : SignUpScreen(onClickedSignIn: toggle);
  void toggle() {
    setState(() {
      isLogin != isLogin;
    });
  }
}

main.dart:

class MainPage extends StatelessWidget {
  const MainPage({super.key});

  @override
  Widget build(BuildContext context) {
    return Scaffold(
        body: StreamBuilder<User?>(
      stream: FirebaseAuth.instance.authStateChanges(),
      builder: (context, snapshot) {
        if (snapshot.connectionState == ConnectionState.waiting) {
          return Center(child: CircularProgressIndicator());
        } else if (snapshot.hasError) {
          return Center(child: Text('Something went wrong'));
        } else if (snapshot.hasData) {
          return HomeScreen();
        } else {
          return AuthPage();
        }
      },
    ));
  }
}

如果有人能帮助我，我将感激不尽！