如何传递包含对象列表的 Parcelable 对象? [英] How to pass a parcelable object that contains a list of objects?

问题描述

我在下面创建了一个 Parcelable 对象，我的对象包含一个 List 产品.在我的构造函数中，我如何处理为 List 重新创建我的 Parcelable?

I have created a Parcelable object below, my object contains a List of Products. In my constructor how do I handle re-creating my Parcelable for the List?

我已经检查了包中所有可用的方法，所有可用的方法是 readArrayList(ClassLoader).我不确定这是否是最好的方法，您的建议将不胜感激.

I have checked all of the methods available from the parcel and all that is available is readArrayList(ClassLoader). I'm not sure if this is the best approach, your advice would really be appreciated.

public class Outfits implements Parcelable {

    private String url;
    private String name;
    private List<Product> products;

    public String getUrl() {
        return url;
    }
    public void setUrl(String url) {
        this.url = url;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public List<Product> getProducts() {
        return products;
    }
    public void setProducts(List<Product> products) {
        this.products = products;
    }

    public void writeToParcel(Parcel dest, int flags) {
        Log.v("", "writeToParcel..." + flags);
        dest.writeString(url);
        dest.writeString(name);
        dest.writeList(products);
    }


    public static final Parcelable.Creator CREATOR = new Parcelable.Creator() {
        public Outfits createFromParcel(Parcel in) {
            return new Outfits(in);
        }

        public Outfits[] newArray(int size) {
            return new Outfits[size];
        }
    };

    @Override
    public int describeContents() {
        return 0;
    }

    /*** Here how do I populate my List of Products ***/
    private Outfits(Parcel in) {
        url = in.readString();
        name = in.readString();
        products = in.read ???????;
    }
}

推荐答案

如果 class Product 与 Parcelable 协议兼容，则应根据文档进行以下操作.

If class Product is compatible with parcelable protocol, following should work according to documentation.

products = new ArrayList<Product>();
in.readList(products, Product.class.getClassLoader());

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