覆盖给我一个错误,我找不到函数

时间:2019-10-23 07:38:05

标签: flutter dart

对于空的构造函数主体,请使用;而不是{}。dart(empty_constructor_bodies) 必须提供一个功能主体。 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()
                ],
              );
  }
}

image

1 个答案:

答案 0 :(得分:3)

您需要在构造函数的末尾添加一个;

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