Question

我正在使用自定义路线来创建过渡效果，但是我在使用使用Provider的值。

错误

Another exception was thrown: Error: Could not find the correct Provider<List<FireFavorites>> above this Favorites Widget

home.dart

    return MultiProvider(
      providers: [
        StreamProvider.value(
          value: db.streamFavorites(user.uid),
        )
      ],
      child: Scaffold(
        body: StreamBuilder<NavBarItem>(
          stream: _bottomNavBarBloc.itemStream,
          initialData: _bottomNavBarBloc.defaultItem,
          builder: (BuildContext context, AsyncSnapshot<NavBarItem> snapshot) {
            switch (snapshot.data) {
              case NavBarItem.SEARCH:
                return Search();
              case NavBarItem.BROWSE:
                return Browse();
              case NavBarItem.ICON:
                return About();
              case NavBarItem.FAVORITES:
                return Favorites();
              case NavBarItem.SETTINGS:
                return Settings();
              default:
                return null;
            }
          },
        ),
        bottomNavigationBar: ConvexBottomNav(navBarHandler: _navBarHandler),
      ),
    );
  }

自定义路线类别

class MyCustomPageRoute extends MaterialPageRoute {
  final Widget previousPage;

  MyCustomPageRoute(
      {this.previousPage, WidgetBuilder builder, RouteSettings settings})
      : super(builder: builder, settings: settings);

  @override
  Widget buildTransitions(BuildContext context, Animation<double> animation,
      Animation<double> secondaryAnimation, Widget currentPage) {
    Animation<Offset> _slideAnimationPage1 =
        Tween<Offset>(begin: Offset(0.0, 0.0), end: Offset(-1.0, 0.0))
            .animate(animation);
    Animation<Offset> _slideAnimationPage2 =
        Tween<Offset>(begin: Offset(1.0, 0.0), end: Offset(0.0, 0.0))
            .animate(animation);
    return Stack(
      children: <Widget>[
        SlideTransition(position: _slideAnimationPage1, child: previousPage),
        SlideTransition(position: _slideAnimationPage2, child: currentPage),
      ],
    );
  }
}

使用Browse()中的类似类。我只是想导航到一个文档。但是使用MyCustomPageRoute会导致Provider错误。

  Navigator.push(
    context,
    MyCustomPageRoute(
      previousPage: this,
      builder: (context) => Document(
        documentID: docid,
      ),
    ),
  );

我想在main.dart中拥有收藏夹StreamProvider，但是我无法在其中访问经过身份验证的用户的uid，否则我不知道如何访问它。变得可用。以下是如何在Provider中设置main.dart。我可以在home.dart中进行一个简单的请求，获取收藏夹并将其添加到Content()中，并在整个应用程序中访问它们，但是我想拥有一个流。

main.dart

  return MultiProvider(
      providers: [
        StreamProvider<FirebaseUser>.value(
          value: FirebaseAuth.instance.onAuthStateChanged,
        ),
        ChangeNotifierProvider<Content>.value(
          value: Content(),
        ),
      ],
      child: MaterialApp(
        title: '',
        theme: ThemeData(
          fontFamily: 'OpenSans',
          brightness: Brightness.light,
          primaryColor: Color(0xff2398C3),
        ),
        home: WelcomePage(),
      ),
    );

任何想法如何解决？

Flutter Provider-在home.dart中设置Streamprovider错误

0 个答案: