MultiProvider sending NULL in child widgets but prints right value in Console - flutter

Question

My HomePagewhere Providers are initilized:
Widget build(BuildContext context) {
return SafeArea(
child: MultiProvider(
providers: [
ChangeNotifierProvider<EmailAuth>(create: (context) => EmailAuth()),
],
child: Scaffold(
resizeToAvoidBottomInset: true,
floatingActionButton: FloatingActionButton(.....
My Authentication function that is triggered when user logs-in (Firebase)
class EmailAuth extends ChangeNotifier {
final _auth = FirebaseAuth.instance;
final dbRef = FirebaseFirestore.instance.collection("users");
String userid;
Future signIn({String email, String password}) async {
final currentUser = await _auth.signInWithEmailAndPassword(
email: email, password: password);
if (currentUser != null) {
userid = _auth.currentUser.uid;
dbRef.doc(_auth.currentUser.uid).update({
"lastLogin": DateTime.now(),
});
} else {
print("something didn't work");
}
print(userid);
notifyListeners();
return userid;
}
}
This is how my Consumer is setup in the HomePage - AppBar
title: Consumer<EmailAuth>(
builder: (context, data, child) => Text(
"${data.userid}",
style: TextStyle(color: Colors.indigoAccent),
),
),
But the output on AppBar is NULL. What am I doing wrong?!
I have been using this as reference for implementation:
https://medium.com/flutter-community/making-sense-all-of-those-flutter-providers-e842e18f45dd

Answer 1

Something similar was a known error in the older Provider Package. Please update to latest and check if the issue is still there. However,
This is how a MultiProvider should look like:
#override
Widget build(BuildContext context) {
return MultiProvider( // <--- MultiProvider
providers: [
ChangeNotifierProvider<MyModel>(create: (context) => MyModel()),
ChangeNotifierProvider<AnotherModel>(create: (context) => AnotherModel()),
],
And should be consumed like this
child: Consumer<MyModel>( // <--- MyModel Consumer
builder: (context, myModel, child) {
return RaisedButton(
child: Text('Do something'),
onPressed: (){
// We have access to the model.
myModel.doSomething();
},
);
},
)
class MyModel with ChangeNotifier { // <--- MyModel
String someValue = 'Hello';
void doSomething() {
someValue = 'Goodbye';
print(someValue);
notifyListeners();
}
}