Java 未正确从数据库返回数据

我有一个函数，它将评估的arraylist返回给用户。每项评估都有一系列问题。我从数据库中获取问题，但当我将评估arrayList返回给用户时，问题arrayList为空。有人能帮我填充问题数组吗

注意： 当我这样做时，

Log.v（“-”，“Questions:”+Questions.size（））从下面的代码中，它给我的尺寸是ex.90，但在那之后的一行，当我这样做的时候
Log.v（“-”，“AssessmentQuestions:“+assessment.getQuestions（）.size（））它给了我
大小：0

这是我的密码：

public ArrayList<Assessment> getAllAsssessments() {
        ArrayList<Assessment> assessments = new ArrayList<Assessment>();
        Assessment assessment;
        String selectQuery = "SELECT * FROM " + TSCYC;
        Cursor cursor = database.rawQuery(selectQuery, null);
        if (cursor.moveToFirst()) {
            do {
                int AssessmentID = cursor.getInt(0);
                int childID = cursor.getInt(1);
                int doctorID = cursor.getInt(2);
                String assessmentDate = cursor.getString(3);
                Log.v("--", assessmentDate);
                ArrayList<Question> questions = new ArrayList<Question>();
                Question q;
                assessment = new Assessment(AssessmentID, assessmentDate,
                        doctorID, childID, questions);
                for (int i = 0; i < 90; i++) {
                    q = new Question("i", (i + 1));
                    q.setAnswer(cursor.getInt(i + 4));
                    questions.add(q);
                }
                Log.v("--", "Questions: " + questions.size());
                assessment = new Assessment(AssessmentID, assessmentDate,
                        doctorID, childID, questions);
                assessments.add(assessment);
                Log.v("--", "AssessmentQuestions: "
                        + assessment.getQuestions().size());
            } while (cursor.moveToNext());

        }
        return assessments;
    }

在构造函数中，您没有复制对问题数组列表的引用，而是创建了一个新的ArrayList，请参见下面代码中的标记点：

public Assessment(int id, String date, int doctorID, int childID,
        ArrayList<Question> questions) {
    questions = new ArrayList<Question>(); //<-- here you make a NEW empty ArrayList
    this.id = id;
    this.setDate(date);
    this.setDoctorID(doctorID);
    this.setChildID(childID);
    this.setQuestions(questions); //<-- here you setQuestions as the empty arraylist

}

公共评估（int-id、字符串日期、int-doctorID、int-childID、，
ArrayList问题）{
questions=new ArrayList（）；//您的评估构造函数是什么样子的？确定那里一切正常吗？事实上，在评估中，您是否有任何带有
new
的内容，我感觉这将是问题所在。不管我们是否需要完整（简短）的工作计划with@RichardTingle你能在回答中给我解释一下吗？我们至少需要评估类的代码。我知道这有数据库集成，所以制作一个自包含的示例很困难，但我们没有足够的代码来处理here@RichardTingle代码更新并添加了类requested@DarkoPetkovski 我被旧的调试代码绊倒的次数。很高兴我能帮上忙！
public class Question implements Serializable{
    /**
     * 
     */
    private static final long serialVersionUID = 8703113563916355470L;
    private String question;
    private int answer, position;

    public Question(String question, int position) {
        answer = -1;
        this.question = question;
        this.position = position;
    }

    public int getAnswer() {
        return answer;
    }

    public void setAnswer(int answer) {
        this.answer = answer;
    }

    public int getPosition() {
        return position;
    }

    public void setPosition(int position) {
        this.position = position;
    }

    public String getQuestion() {
        return question;
    }

    public void setQuestion(String question) {
        this.question = question;
    }
}

public Assessment(int id, String date, int doctorID, int childID,
        ArrayList<Question> questions) {
    questions = new ArrayList<Question>(); //<-- here you make a NEW empty ArrayList
    this.id = id;
    this.setDate(date);
    this.setDoctorID(doctorID);
    this.setChildID(childID);
    this.setQuestions(questions); //<-- here you setQuestions as the empty arraylist

}