团队作业博客（九） 实现心理测评问卷

import 'package:flutter/material.dart';

class QuestionnairePage extends StatefulWidget {
  @override
  _QuestionnairePageState createState() => _QuestionnairePageState();
}

class Question {
  String text;
  int yesScore;
  Question(this.text, this.yesScore);
}

final List<Question> questions = [
  Question("你是否经常感到焦虑或紧张?", 2),
  Question("你是否有难以入睡的情况?", 1),
  Question("你是否经常回避社交活动?", 3),
  Question("你是否经常感到无助或绝望?", 5),
  Question("你是否对自己的能力持续怀疑?", 2),
  Question("你是否经常有负罪感或自我责备的想法?", 4),
  Question("你是否经历过显著的体重变化（无意识的增减）?", 3),
  Question("你是否对未来感到极度担忧?", 6),
  Question("你是否容易情绪波动或易怒?", 2),
  Question("你是否有过持续的身体不适但找不到明确原因?", 8),
];

class _QuestionnairePageState extends State<QuestionnairePage> {
  Map<int, bool> _answers = {};
  int _totalScore = 0;

  void _submitAnswers() {
    setState(() {
      _totalScore = 0;
      questions.asMap().forEach((index, question) {
        if (_answers[index] ?? false) _totalScore += question.yesScore;
      });
    });

    String result;
    if (_totalScore <= 10) {
      result = "你的心理健康状况较好。";
    } else if (_totalScore <= 20) {
      result = "你可能面临一些心理压力，建议关注个人心理健康。";
    } else {
      result = "你的心理状况可能需要专业帮助，请考虑咨询专业人士。";
    }

    showDialog(
      context: context,
      builder: (context) => AlertDialog(
        title: Text('评估结果'),
        content: Text(result),
        actions: [
          TextButton(
            onPressed: () => Navigator.pop(context),
            child: Text('确定'),
          ),
        ],
      ),
    );
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: Text('心理调查问卷')),
      body: SingleChildScrollView(
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: questions.asMap().entries.map((entry) {
            final index = entry.key;
            final question = entry.value;
            return Padding(
              padding: EdgeInsets.all(16.0),
              child: CheckboxListTile(
                title: Text(question.text),
                value: _answers[index] ?? false,
                onChanged: (value) {
                  setState(() {
                    _answers[index] = value!;
                  });
                },
              ),
            );
          }).toList(),
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: _submitAnswers,
        tooltip: '提交',
        child: Icon(Icons.send),
      ),
    );
  }
}