Question

当我热重新加载我的应用程序时，我从Provider类中丢失了状态。我知道Provider正确地保留了状态，所以我知道问题出在我的代码中，但是我无法弄清楚哪里出了问题。我有以下内容：

main.dart

class App extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return FutureBuilder(
      future: GlobalData.fetchTheme(),
      builder: (BuildContext context, AsyncSnapshot<String> themeSnapshot) {
        if (themeSnapshot.hasData) {
          GlobalData.theme = themeSnapshot.data;
          return Phoenix(
            child: MaterialApp(
              title: 'MyApp',
              home: Scaffold(body: Root()),
              theme: ThemeData(
                accentColor: Palette.green
              ),
            )
          );
        }
        return Loading();
      }
    );
  }
}

root.dart

class Root extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return StreamBuilder<FirebaseUser>(
      stream: FireAuth().getInstance().onAuthStateChanged,
      builder: (context, snapshot) {
        if (snapshot.connectionState == ConnectionState.active) {
          FirebaseUser user = snapshot.data;
          if (user != null) {
            GlobalData.setUid(user.uid);
          }
          return user == null ? Auth() : SafeArea(child: KeyboardDismisser(child: Core()));
        } else {
          return Loading();
        }
      },
    );
  }
}

core.dart

class Core extends StatelessWidget {
  Widget build(BuildContext context) {
    return Column(
      children: <Widget>[
        FutureBuilder(
          future: Users.getUser(GlobalData.uid),
          builder: (BuildContext context, AsyncSnapshot<TuneUser> userSnapshot) {
            if (userSnapshot.hasData) {
              return MultiProvider(
                providers: [
                  ChangeNotifierProvider(create: (context) => UserProvider(userSnapshot.data)),
                  ChangeNotifierProvider(create: (context) => SearchProvider()),
                  ChangeNotifierProvider(create: (context) => DetailsProvider()),
                ],
                child: Expanded(child: BottomBarNavigation())
              );
            }
            return Expanded(child: Loading());
          }
        ),
        BottomBar()
      ]
    );
  }
}

我认为在某个时候我应该重建或失去状态，在已经存在的类似问题的帮助下，我尝试了很多事情，但是我似乎无法解决。

>

有什么想法吗？非常感谢您的帮助。

干杯

安迪

Flutter-热重载时丢失提供商状态

0 个答案: