[Flutter] Accessibility - How to Programmatically Shift Screen Reader Focus to a Specific...

I am working on a Flutter project and incorporating accessibility features within a quiz. My question: How can I ensure that after a user selects an answer, the screen reader automatically focuses back on the question when the next question loads?

I have this sample code:

import 'package:flutter/material.dart';

class QuizPage extends StatefulWidget {
const QuizPage({super.key});

@override
_QuizPageState createState() => _QuizPageState();
}

class _QuizPageState extends State<QuizPage> {
int _currentQuestionIndex = 0;
late FocusNode _questionFocusNode;

final List<Map<String, Object>> _questions = [
{
'question': 'What color is the sky?',
'answers': ['Blue', 'Green', 'Yellow'],
'correctAnswer': 0,
},
{
'question': 'How many planets are in the solar system?',
'answers': ['7', '8', '9'],
'correctAnswer': 1,
},
{
'question': 'Which is the largest ocean in the world?',
'answers': ['Atlantic Ocean', 'Indian Ocean', 'Pacific Ocean'],
'correctAnswer': 2,
},
{
'question': 'What is the capital of France?',
'answers': ['Berlin', 'Madrid', 'Paris'],
'correctAnswer': 2,
},
];

void _answerQuestion(int selectedAnswerIndex) {
if (selectedAnswerIndex ==
_questions[_currentQuestionIndex]['correctAnswer']) {
ScaffoldMessenger.of(context).showSnackBar(
const SnackBar(content: Text('Correct answer!')),
);
} else {
ScaffoldMessenger.of(context).showSnackBar(
const SnackBar(content: Text('Wrong answer!')),
);
}

setState(() {
if (_currentQuestionIndex < _questions.length - 1) {
_currentQuestionIndex++;
} else {
ScaffoldMessenger.of(context).showSnackBar(
const SnackBar(content: Text('The quiz is finished!')),
);
}
});
}

@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: const Text('Exam'),
),
body: Padding(
padding: const EdgeInsets.all(16.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: [
Semantics(
label: 'Frage ${_currentQuestionIndex + 1}',
child: Text(
_questions[_currentQuestionIndex]['question'] as String,
style: const TextStyle(fontSize: 24),
),
),
const SizedBox(height: 20),
...(_questions[_currentQuestionIndex]['answers'] as List<String>)
.asMap()
.entries
.map((entry) {
int index = entry.key;
String answer = entry.value;
return Semantics(
label: 'Option ${entry.key + 1}: $answer',
child: ElevatedButton(
onPressed: () => _answerQuestion(index),
child: Text(answer),
),
);
}).toList(),
],
),
),
);
}
}

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