I cannot update UI state with riverpod - flutter

Question

I'm working on a quiz app as a personal project and what I want to do is make it possible for the user to name a question set. (Kind of like a folder for questions on a particular subject). I am using Riverpod. (I've worked with the provider package a couple of times) for state management but it seems I've missed a step or two because when I type in the name, I don't see it on the page. I hope I can be pointed in the right direction. Thanks
Class forRiverpod model which shows a list of type QuestionSetConstructor for taking the title. There is also a method for accepting the question title to add to the list
class RiverpodModel extends ChangeNotifier {
final List<QuestionSetConstructor> _questionSetList = [];
UnmodifiableListView<QuestionSetConstructor> get questionSet {
return UnmodifiableListView(_questionSetList);
}
void addTitleT(String title) {
final addQuestionTitle = (QuestionSetConstructor(title: title));
_questionSetList.add(addQuestionTitle);
notifyListeners();
}
int get count{
return questionSet.length;
}
}
`
This is for the alert dialog that will take the question title.
In the elevated button, I stated that I want the contents of the
text field to be added to the list in the Riverpod model.
void setQuestionNameMethod(context) {
showDialog(
context: context,
barrierDismissible: true,
builder: (BuildContext context) {
return SetQuestionNameAlertDialog();
});
}
class SetQuestionNameAlertDialog extends ConsumerStatefulWidget {
#override
_SetQuestionNameAlertDialogState createState() =>
_SetQuestionNameAlertDialogState();
}
class _SetQuestionNameAlertDialogState
extends ConsumerState<SetQuestionNameAlertDialog> {
final TextEditingController questionNameController = TextEditingController();
final riverPodModelProvider2 =
ChangeNotifierProvider((ref) => RiverpodModel());
#override
Widget build(
BuildContext context,
) {
final questionNameRef = ref.watch(riverPodModelProvider2);
return AlertDialog(
title: Text("Name of Question Set",
style: TextStyle(
color: Colors.blue[400],
fontSize: 20,
fontWeight: FontWeight.w600)),
content: TextField(
controller: questionNameController,
),
actions: [
Center(
child: ElevatedButton(
onPressed: () {
setState(() {
questionNameRef.addTitleT(questionNameController.text) ;
});
print(questionNameRef.questionSet.first.title);
Navigator.pop(context);
},
child: const Text("Save"))),
],
);
}
}
`
This is the page where the question title is shown as a list. However, for some reason it is not showing.
class QuestionSetPage extends ConsumerStatefulWidget {
#override
_QuestionSetPageState createState() => _QuestionSetPageState();
}
class _QuestionSetPageState extends ConsumerState<QuestionSetPage> {
final riverPodModelProvider =
ChangeNotifierProvider((ref) => RiverpodModel());
#override
Widget build(BuildContext context) {
final questionSetRef = ref.watch(riverPodModelProvider);
return Scaffold(
appBar: AppBar(
elevation: 0,
backgroundColor: Colors.grey[50],
centerTitle: true,
actions: [
IconButton(
onPressed: () {
setState(() {
setQuestionNameMethod(context);
// modalSheetMethod(context);
});
},
icon: Icon(
Icons.add,
size: 25,
color: Colors.blue[400],
))
],
),
body: Column(
children: [
Padding(
padding: const EdgeInsets.all(8.0),
child: Text(
"Question Set List",
style: TextStyle(
color: Colors.blue[400],
fontSize: 30,
fontWeight: FontWeight.w600),
),
),
Expanded(
child: ListView.builder(
itemCount: questionSetRef.count,
itemBuilder: (BuildContext context, int index) {
return Tiles(
title: questionSetRef.questionSet[index].title,
);
}),
)
],
),
);
}
}
class Tiles extends StatelessWidget {
String title;
Tiles({required this.title});
#override
Widget build(BuildContext context) {
return Padding(
padding: const EdgeInsets.fromLTRB(15, 3, 15, 3),
child: Material(
elevation: 2,
child: GestureDetector(
onTap: () {
Navigator.push(context, MaterialPageRoute(builder: (context) {
return QuestionSetsQuestionPage();
}));
},
child: ListTile(
title: Text(
title,
style: TextStyle(
color: Colors.blue[400],
fontSize: 17,
fontWeight: FontWeight.w400),
),
tileColor: Colors.white,
// subtitle: Text(
// "${questionSets[index].numberOfQuestions} number of questions",
// ),
leading: const Icon(
Icons.add_box_outlined,
size: 30,
),
),
),
),
);
}
}