intent.put附加可包裹对象列表

Question

此问题与所有其他问题不同，因为在这里，可打包对象的列表是在外部通过Intent快速发送的，是在外部即时创建的。

问题：产品是可打包的，但自定义列表不是。如何使清单可拆分？

产品

public class Product implements Parcelable {

    public String id;
    public String name;

    public Product(String id, String name) {
        this.id = id;
        this.name = name;
    }

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

    protected Product(Parcel in) {
        id = in.readString();
        name = in.readString();
    }

    public static final Creator<Product> CREATOR = new Creator<Product>() {
        @Override
        public Product createFromParcel(Parcel in) {
            return new Product(in);
        }

        @Override
        public Product[] newArray(int size) {
            return new Product[size];
        }
    };

    @Override
    public void writeToParcel(Parcel parcel, int i) {
        parcel.writeString(id);
        parcel.writeString(name);
    }
}

活动分类

Intent intent = new Intent(this, ShowProducts.class);
List<Product> products = getSpecificProducts();

intent.putExtra("PRODUCTS", products); // error

startActivity(intent);

---

编辑

这个问题有两个，不是重复的，另一部分是List<Enum>

public enum Department implements Parcelable {

    SALES("Sales", 0),
    HR("HR", 1),

    public String name;
    public int ordinal;

    Department(String name, int ordinal) {
        this.name = name;
        this.ordinal = ordinal;
    }

    public static final Creator<Department> CREATOR = new Creator<Department>() {
        @Override
        public Department createFromParcel(Parcel in) {
            return Department.values()[in.readInt()];
        }

        @Override
        public Department[] newArray(int size) {
            return new Department[size];
        }
    };

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

    @Override
    public void writeToParcel(Parcel parcel, int i) {
        parcel.writeInt(ordinal);
    }

}

根据建议的答案，我已经尝试过。

List<Department> departments = getSpecificDepartments();

intent.putParcelableArrayListExtra("Departments", departments);

错误：不兼容的类型：列表无法转换为ArrayList

Answer 1

尝试此

var intent = Intent(this, ActivityB::class.java)
val list = arrayListOf<Person>()
intent.putParcelableArrayListExtra("LIST", list)

Answer 2

像这样使用putParcelableArrayListExtra方法：

ArrayList<Product> products = getSpecificProducts();
intent.putParcelableArrayListExtra("PRODUCTS", products);

Answer 3

您无需将列表设为可拆分。简而言之，只需使用现有方法即可。

final Intent i = new Intent(this,SecondActivity.class);
final ArrayList<Product> list = new ArrayList< Product >();
i.putParcelableArrayListExtra(PRODUCT_KEY, list);
startActivity(i);

几乎以相同的方式检索。

final ArrayList<Product> list = this.getIntent()
            .getParcelableArrayListExtra(PRODUCT_KEY);