我有一个POJO,我嵌入房间实体;请注意 POJO is defined in a library module ;

@Entity
public class Person {
    @PrimaryKey
    @NonNull
    private String uuid;

    @Embedded
    @NonNull
    private Address address;

    public Person(@NonNull String uuid, @NonNull Address address) {
        this.uuid = uuid;
        this.address = address;
    }

    @NonNull
    public String getUuid() {
        return uuid;
    }

    @NonNull
    public Address getAddress() {
        return address;
    }
}


public class Address {
    @NonNull
    private String street;

    @NonNull
    private String city;

    public Address(@NonNull String street, @NonNull String city) {
        this.street = street;
        this.city = city;
    }

    @NonNull
    public String getStreet() {
        return street;
    }

    @NonNull
    public String getCity() {
        return city;
    }
}


@Dao
public interface PersonDao {
    @Query("SELECT * FROM Person")
    List<Person> getPersons();
}



@TypeConverters(DateConverter.class)
@Database(entities = {Person.class}, version = 1, exportSchema = false)
public abstract class PersonDb extends RoomDatabase {
    private static volatile PersonDb INSTANCE;

    public abstract PersonDao getPersonDao();
}

编译失败

“错误:实体和Pojos必须具有可用的公共构造函数 . 您可以拥有一个空构造函数或构造函数,其参数与字段匹配(按名称和类型) . ”错误:无法找到字段的setter .

如果我从构造函数参数中删除 @NonNull 注释到地址POJO,代码编译正常 . 此外,如果app模块中存在相同的POJO,则代码将进行编译 .

可以看出, Address 类确实有一个公共构造函数 .

我在这里错过了什么?在Room的角度来看 usable constructor 的定义是什么?或者这是Room的问题?