Android与realm的合作

我有这个模型-

public class ItemsModel extends RealmObject {
private long id;
private String itemName;
private int itemCode;
private int itemPrice;
private int itemImage;
private int itemStock;
private int itemAmount;
private int discount;
private int total;
private boolean isSelected = false;
private int seller;

public ItemsModel() {
}

public class CartModel extends RealmObject {
@PrimaryKey
private int cartId;
private RealmList<ItemsModel> itemsModels;

public CartModel() {
}

而这个模型——

public class ItemsModel extends RealmObject {
private long id;
private String itemName;
private int itemCode;
private int itemPrice;
private int itemImage;
private int itemStock;
private int itemAmount;
private int discount;
private int total;
private boolean isSelected = false;
private int seller;

public ItemsModel() {
}

public class CartModel extends RealmObject {
@PrimaryKey
private int cartId;
private RealmList<ItemsModel> itemsModels;

public CartModel() {
}

如果我试图将ItemsModel中的同一个对象插入购物车的列表中，则recyclerview的行为就像它们是一个对象一样

---

谢谢

在CartModel.java中实现了可序列化的

。为什么项目模型id没有用主键标记？我已删除并返回。。我想也许这就是原因