在超时后获取新问题(使用Flutter)

import 'package:flutter/material.dart';
import 'package:http/http.dart' as http;

class QuestionScreen extends StatefulWidget {
  @override
  _QuestionScreenState createState() => _QuestionScreenState();
}

class _QuestionScreenState extends State<QuestionScreen> {
  String question = 'Loading...';

  Future<void> fetchQuestion() async {
    try {
      final response = await http.get('https://example.com/api/question');
      if (response.statusCode == 200) {
        setState(() {
          question = response.body;
        });
      } else {
        setState(() {
          question = 'Error: ${response.statusCode}';
        });
      }
    } catch (e) {
      setState(() {
        question = 'Error: ${e.toString()}';
      });
    }
  }

  @override
  void initState() {
    super.initState();
    fetchQuestion();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Question'),
      ),
      body: Center(
        child: Text(question),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: () {
          fetchQuestion();
        },
        child: Icon(Icons.refresh),
      ),
    );
  }
}

void main() {
  runApp(MaterialApp(
    home: QuestionScreen(),
  ));
}