无法将ChangeNotifierProvider.value放在扑波中以反映数据中的变化

Question

我无法在 UI 中放置changeNotifierProvider.value 来显示更改（已检查并且数据没有问题），如果您可以，请指导我在下面的小部件中放置changeNotifierProvider.value 的位置和方式。谢谢。

如果您需要任何进一步的信息，请告诉我。

更改.dart

 @override
  Widget build(BuildContext context) {
    final check = Provider.of<UserProfileReadProvider>(context);

    final n = check.items;

    return Scaffold(
      body: Container(
        margin:
            const EdgeInsets.only(top: 50, left: 40, right: 10, bottom: 90.0),
        child: Column(
          mainAxisAlignment: MainAxisAlignment.start,
          crossAxisAlignment: CrossAxisAlignment.start,
          children: <Widget>[
            CircleAvatar(
              radius: 50.0,
              backgroundColor: Colors.blue.shade800,
              child: const Text('AM'),
            ),
            const SizedBox(height: 70),
            Column(
              mainAxisAlignment: MainAxisAlignment.start,
              crossAxisAlignment: CrossAxisAlignment.start,
              children: <Widget>[
                Text(
                  'Name : ${n.name}',
                  style: const TextStyle(
                      fontStyle: FontStyle.normal,
                      color: Colors.black,
                      fontSize: (18.0)),
                ),
                const SizedBox(height: 15),
                Text(
                  'Address: ${n.address}',
                  style: const TextStyle(
                      fontStyle: FontStyle.normal,
                      color: Colors.black,
                      fontSize: 18.0),
                ),

main.dart

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MultiProvider(
        providers: [
          ChangeNotifierProvider(
            create: (ctx) => UserProfileReadProvider(),
          ),
        ],
        child: MaterialApp(
          title: 'Flutter Demo',
          theme: ThemeData(
            primarySwatch: Colors.blue,
          ),
          initialRoute: '/',
          routes: {
            '/': (ctx) =>Page(),
          },
        ));
  }
}

提供程序.dart

UserProfileInformation nitems = UserProfileInformation();

Future<void> addUserinformation(
      UserProfile st, var imagecheck) async {
    
    Map<String, String> headers = {
      "Content-Type": "charset=utf-8",
      "Content-type": "application/json"
    };

    var uri = Uri.parse('http://localhost:3001/userprofile/check/upload');
    try {
      var request = http.MultipartRequest('POST', uri);
      request.headers.addAll(headers);
      request.fields['userId'] = st.userId;
      request.fields['name'] = st.name;
      request.fields['address'] = st.address;

      var response = await request.send();

      print(response.statusCode);
      if (response.statusCode == 201) {
        st = nitems;

        notifyListeners();
      } else {
        print('invalid data ');
      }
    } catch (error) {
      print(error);
    }
  }