Question

我正在尝试在ArrayList上的Activities之间传递数据（Android）

当实现Parcelable的类不包含自定义对象（Shop）时，一切正常，但如果我的类包含自定义对象，我该怎么做？

商店

public Shop(Parcel in) {
    this.id  = in.readString();
    this.name = in.readString();
    this.type = in.readString();
    this.lat= in.readDouble();
    this.long= in.readDouble();
}
@Override
public void writeToParcel(Parcel dest, int flags) {

    dest.writeString(this.id);
    dest.writeString(this.name);
    dest.writeString(this.type);
    dest.writeDouble(this.lat);
    dest.writeDouble(this.long);
}

@SuppressWarnings("rawtypes")
public static final Parcelable.Creator CREATOR = new Parcelable.Creator() {
    public Shop createFromParcel(Parcel in) {
        return new Shop(in);
    }

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

这是我的另一个类商品，它包含商店的对象

public Offer(Parcel in) {
    this.id  = in.readInt();
    this.title = in.readString();
    this.myShop = in.read.......();
}


@Override
public void writeToParcel(Parcel dest, int flags) {

    dest.writeInt(this.id);
    dest.writeString(this.title);
    dest.write......(this.myShop);
}

我应该读写哪种数据类型？

非常感谢！

Answer 1

您的Shop课程应该实施Parcelable，您应该使用

public Offer(Parcel in) {
    this.id  = in.readInt();
    this.title = in.readString();
    this.myShop = in.readParcelable(Shop.class.getClassLoader());
}

@Override
public void writeToParcel(Parcel dest, int flags) {
    dest.writeInt(this.id);
    dest.writeString(this.title);
    dest.writeParcelable(this.myShop, flags);
}

包含自定义对象的Parcelable List

1 个答案: