android - Android - 将领域列表保存在领域对象中

Question

我有一个模型

public class Response extends RealmObject {

        @PrimaryKey
        private String _id;
        private RealmList<TaskResponse> task_responses;
        private AssignmentRecord assignmentRecord;
        private ResponseStatistic responseStats;
}

现在，我正在尝试将 task_responses realmlist 保存在 Response 中，但未能成功，以下是相关代码：

    mRealm.beginTransaction();
    response.setTaskResponses(taskResponses);
    response.setAssignmentRecord(assignmentRecord);
    response.setResponseStats(responseStatistic);
    mRealm.commitTransaction();

当我在此行之前放置调试器时

response.setTaskResponses(taskResponses);

taskResponses 的大小为 5，但执行后它变为空并且领域存储一个空列表。

任务响应模型：

    public class TaskResponse extends RealmObject {

        @PrimaryKey
        private String _id;
        private String taskId;
        private Boolean answered;
        private String answer;
        private TaskStatistic taskStat;
    }

Answer 1

您可以像这样保存它会起作用

Realm mRealm = Realm.getDefaultInstance();
    mRealm.beginTransaction();
    RealmList<TaskResponse> taskResponseslist = new RealmList();
    taskResponseslist.addAll(taskResponses);
    response.setTaskResponses(taskResponseslist);
    response.setAssignmentRecord(assignmentRecord);
    response.setResponseStats(responseStatistic);
    mRealm.commitTransaction();
    mRealm.close();