Flutter problem with finding provider context

You first need to create the Provider and place in the tree above the usage. for example, in your case:

  Widget build(BuildContext context) {
final title = 'Tap to select';
return MaterialApp(
    title: title,
    home: Scaffold(
        appBar: AppBar(
          title: Text(title),
        ),
        body: Provider<UserRepository> (
          builder: (context) => UserRepository(),
            dispose: (context, val) => val.dispose(),
            child: NewRouteBody())
    ));

}

The issue is:

Your ChangeNotifierProvider is located inside Home, but you are trying to access it outside Home.

Providers are scoped. Which means that if it's located inside a widget tree, only its descendants can access it. As such, in your code, only Home can read from the provider.

To fix that, move the provider above MaterialApp:

ChangeNotifierProvider<UserRepository> (
  builder: (context) => UserRepository(),
  child: MaterialApp(
    home: Home(),
  ),
)