Flutter Provider.of<> doesn't work in sub class - flutter

Question

in my application this codes work fine when i use them inside flutter main classes as StatefulWidget, StatelessWidget or State
final User user = Provider.of<User>(context);
final ConnectivityStatus connection = Provider.of<ConnectivityService>(context).connectivityStatus;
for example:
class FragmentMainApplicationBodyState extends State<FragmentMainApplicationBody>{
final User user = Provider.of<User>(context);
final ConnectivityStatus connection = Provider.of<ConnectivityService>(context).connectivityStatus;
#override
Widget build(BuildContext context)
{
return Text('${user.userController.userInfo.name}');
}
}
now i'm trying use them inside sub-class, for example:
abstract class BaseState<T extends StatefulWidget> extends State {
bool isOnline = true;
ConnectivityStatus connection;
User user ;
#override
void initState() {
super.initState();
_initConnectivity();
}
Future _initConnectivity() async {
connection = Provider.of<ConnectivityService>(context).connectivityStatus;
isOnline = connection == ConnectivityStatus.Connected;
user = Provider.of<User>(context);
}
}
when i implementing them in the class, Providers doesn't work in this implementation
i get NULL for both of theme
class FragmentMainApplicationBodyState extends BaseState<FragmentMainApplicationBody>{
#override
Widget build(BuildContext context)
{
return Text('${user.userController.userInfo.name}');
}
}
MultiProvider structure:
ChangeNotifierProvider<User>.value(value: User()),
ChangeNotifierProvider<ConnectivityService>.value(value: ConnectivityService()),
User:
class User extends ChangeNotifier{
UserController userController;
}
class UserController {
UserInfo userInfo;
PageInfo pageInfo;
UserController(
{#required this.userInfo,
#required this.pageInfo,
});
}
ConnectivityService :
enum ConnectivityStatus { Connected, Disconnected }
class ConnectivityService extends ChangeNotifier {
ConnectivityStatus connectivityStatus;
ConnectivityService() {
Connectivity().onConnectivityChanged.listen((ConnectivityResult result) async {
await _updateConnectionStatus().then((bool isConnected) {
connectivityStatus = isConnected ? ConnectivityStatus.Connected : ConnectivityStatus.Disconnected;
});
notifyListeners();
});
}
Future<bool> _updateConnectionStatus() async {
bool isConnected;
try {
final List<InternetAddress> result = await InternetAddress.lookup('google.com');
if (result.isNotEmpty && result[0].rawAddress.isNotEmpty) {
isConnected = true;
}
} on SocketException catch (_) {
isConnected = false;
return false;
}
return isConnected;
}
}