Android Room Database：如何处理实体中的 Arraylist

我刚刚实现了离线数据保存的空间.但在实体类中，我得到以下错误:

Error:(27, 30) error: Cannot figure out how to save this field into database. You can consider adding a type converter for it.

课程安排如下:

@Entity(tableName = "firstPageData")
public class MainActivityData {

    @PrimaryKey
    private String userId;

    @ColumnInfo(name = "item1_id")
    private String itemOneId;

    @ColumnInfo(name = "item2_id")
    private String itemTwoId;

    // THIS IS CAUSING THE ERROR... BASICALLY IT ISN'T READING ARRAYS
    @ColumnInfo(name = "mylist_array")
    private ArrayList<MyListItems> myListItems;

    public String getUserId() {
        return userId;
    }

    public void setUserId(String userId) {
        this.userId = userId;
    }

    public ArrayList<MyListItems> getMyListItems() {
        return myListItems;
    }

    public void setCheckListItems(ArrayList<MyListItems> myListItems) {
        this.myListItems = myListItems;
    }

}

所以基本上我想把ArrayList保存在数据库中，但我找不到任何与之相关的东西.你能告诉我如何使用房间保存数组吗？

注意:MyListItems Pojo类包含2个字符串(截至目前)

提前谢谢.