Android房间自定义类型转换器实时数据持续触发

Question

连续添加Type Converter实时数据触发器后

这是我的JobImages实体

@Entity
@TypeConverters({AddOnConverter.class})
public class JobImagesTable {

    @PrimaryKey(autoGenerate = true)
    int id; 

    @ColumnInfo(name = "job_marked_image")
    String jobMarkedImage;

    @ColumnInfo(name = "complexity_id")
    int complexityId;

    @ColumnInfo(name = "addons_data")
    ArrayList<AddonService> addOnsData = new ArrayList<>();


    @ColumnInfo(name = "status")
    int status;    

}

这是我的DAO

@Dao
public interface JobImagesDao {   


    @Query("SELECT * FROM JobImagesTable WHERE job_id=:job_id AND is_delete = 0")
    LiveData<List<JobImagesTable>> getImagesForView(int job_id);

}

AddOnService Class

public class AddonService implements Parcelable {

    @SerializedName("AddonID")
    @Expose
    private int addonID;
    @SerializedName("Name")
    @Expose
    private String name;
    @SerializedName("ExtraCredits")
    @Expose
    private double extraCredits;

    @SerializedName("isSelected")
    @Expose
    private boolean isSelected;

    public AddonService() {
    }
}

转换器类

public class AddOnConverter {

    @TypeConverter
    public static ArrayList<AddonService> fromString(String value) {
        Type listType = new TypeToken<ArrayList<AddonService>>() {}.getType();
        return new Gson().fromJson(value, listType);
    }

    @TypeConverter
    public static String fromArrayList(ArrayList<AddonService> list) {
        Gson gson = new Gson();
        String json = gson.toJson(list);
        return json;
    }
}

此数据库类

@Database(entities = {JobImagesTable.class}, version = 1)
public abstract class AppDatabase extends RoomDatabase {
    public abstract JobImagesDao getOriginImagesDao();
}

我没有得到任何编译时错误，但是在添加Type转换器后，屏幕上的Livedata连续触发了什么错误？