在此 MyApp 小部件上方找不到正确的提供程序

Could not find the correct provider above this MyApp widget

我正在尝试使用 MaterialApp 中的提供商。我有一个 MultiProvider,它是 MaterialApp.

的父级

当我尝试访问提供商时,出现以下错误:

Error: Could not find the correct Provider above this MyApp Widget

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MultiProvider(
      providers: [
        ChangeNotifierProvider<RoutesProvider>(create: (context) => RoutesProvider()),
        ...
      ],
        child: MaterialApp(
          title: 'coolApp',
          // key: Provider.of<RoutesProvider>(context, listen: false).mainKey,
          initialRoute: '/home',
          routes: <String, WidgetBuilder>{...routes},
        ),
    );
  }
}

遵循以下结构,ChangeNotifierProvider.value 是分配供应商的正确方式

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MultiProvider(
      providers: [
        ChangeNotifierProvider.value(value: RoutesProvider()),
        //.....
      ],
      child: MaterialApp(