小编S A*_*ukh的帖子

使用;代替{}空构造函数体。dart(empty_constructor_bodies) 必须提供函数体。尝试添加一个函数 body.dart(missing_function_body)

import 'package:flutter/material.dart';
import './question.dart';
import './answer.dart';

class Quiz extends StatelessWidget {
  final int questionIndex;
  final List<Map<String, Object>> questions;
  final Function answerQuestion;

  Quiz(this.questionIndex,this.questions,this.answerQuestion)

  @override

  Widget build(BuildContext context) {
    return Column(
                children: [
                  Question(
                    questions[questionIndex]['questionText'],
                  ),
                  ...(questions[questionIndex]['answers'] as List<String>)
                      .map((answer) {
                    return Answer(answerQuestion, answer);
                  }).toList()
                ],
              );
  }
}