GreenDao名单实体的实体

Question

我正在使用GreenDao一个Android应用程序，我有这两个实体的名单：

@Entity 
public class Quiz { 

    @Id(autoincrement = true) 
    private Long id; 

    private Date date; 

    private String type; 

    @ToMany(referencedJoinProperty = "quizId") 
    private List<Answer> answers; 
} 

@Entity 
public class Answer { 

    @Id(autoincrement = true) 
    private Long id; 

    private int answer; 

    private float value; 

    private int questionNumber; 

    private String type; 

    private Long quizId; 
} 

我尝试使用下面的代码来获取测验列表：

DaoSession daoSession = AndroidAdapter.getDaoSession(); 
QuizDao quizDao = daoSession.getQuizDao(); 
List<Quiz> quizs = quizDao.loadAll(); 

但答案列表总是空的，我做错了什么？

Answer 1

我AndroidAdapter类：

public class AndroidAdapter { 

    public static Context getContext() { 
     return AppApplication.getContext(); 
    } 

    public static DaoSession getDaoSession() { 
     return AppApplication.getDaoSession(); 
    } 
} 

而且AppApplication类

@Override 
public void onCreate() { 
    super.onCreate(); 

    context = this; 

    DaoMaster.DevOpenHelper helper = new DaoMaster.DevOpenHelper(this,ENCRYPTED ? "exam-db-encrypted" : "exam-db"); 
    Database db = ENCRYPTED ? helper.getEncryptedWritableDb("exam-secret") : helper.getWritableDb(); 
    daoSession = new DaoMaster(db).newSession(); 

    this.addAllEvents(); 
} 

public static DaoSession getDaoSession() { 
    return daoSession; 
}