如果需要在Activity之间传递类对象的话,必须将类序列化.Android使用的是Parcelable接口.

被传递的类需要继承Parcelable接口.

public class Store implements Parcelable
{
    //此处变量的声明顺序必须和readFromParcel,writeToParcel的读写顺序一致,否则会出错
    private long id;
    private String name;
    private long userid;
    private double longitude;
    private double latitude;
    private String address;
    private String area;
    private String description;
    private String errMsg;
    private String logoUrl;
    private byte[] logo;    //图片数据,建议定义为byte[]类型.

    //这个方法不需要修改
    @Override
    public int describeContents() {
        return 0;
    }

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

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

    public Store(Parcel in){
        readFromParcel(in);
    }

    public Store()
    {

    }

    public void readFromParcel(Parcel in){

        id = in.readLong();
        name = in.readString();
        userid = in.readLong();
        longitude = in.readDouble();
        latitude = in.readDouble();
        address = in.readString();
        area = in.readString();
        description = in.readString();
        errMsg = in.readString();
        logoUrl = in.readString();
        logo = new byte[in.readInt()];  
        in.readByteArray(logo); //读取byte流

    }

    @Override
    public void writeToParcel(Parcel parcel, int i) {
        parcel.writeLong(id);
        parcel.writeString(name);
        parcel.writeLong(userid);
        parcel.writeDouble(latitude);
        parcel.writeDouble(longitude);
        parcel.writeString(address);
        parcel.writeString(area);
        parcel.writeString(description);
        parcel.writeString(errMsg);
        parcel.writeString(logoUrl);
        parcel.writeInt(logo.length);   //图片byte流数据,先写入长度.
        parcel.writeByteArray(logo);    //再写入byte流

    }
}