Room Persistence库-具有List< Video>的嵌套对象@Embedded不起作用. [英] Room Persistence library - Nested Object with List<Video>, @Embedded doesn't work.

问题描述

我有一个VideoList对象，我想使用房间库保存它，但是当我尝试在公共列表list = null时使用@Embedded时；它给我下面的错误:错误:(23，24)错误:无法弄清楚如何将该字段保存到数据库中.您可以考虑为其添加类型转换器.

I have a VideoList object which I want to save using room library but when i try to use @Embedded with public List list = null; it is giving me below error: Error:(23, 24) error: Cannot figure out how to save this field into database. You can consider adding a type converter for it.

VideoList类如下.

VideoList Class is as below.

@Entity
public class VideoList {


@PrimaryKey
public String id;

public String title;
public String viewType;
public Integer sortingOrder = null;
public String componentSlug;
public String endPoint = null;

@Embedded
public List<Video> list = null;
public boolean hidden = false; }




Any suggestions? 

推荐答案

在大多数情况下，由于它们是复杂的对象，因此您无法使用转换器生成String！

Most of the times you can't use the converter to produce a String since they are complex objects!

为了不重复答案，在另一个相同的问题中，您可以阅读我的答案.

To not repeat the answer, in the other same question you can read my answer.

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