android中实现Parcelable序列化步骤

import java.io.Serializable;
import java.text.DecimalFormat;

import android.os.Parcel;
import android.os.Parcelable;

/**
 * 代金券/团购实体类
 * @author huqiang
 *
 */
public class CouponEntity implements Parcelable{
    /**
     * shop_id
     */
    public String shop_id ;
    /**
     * 店铺名称
     */
    public String shop_name ;
    /**
     * 代金券id
     */
    public String coupon_id ;
    /**
     * 代金券编号
     */
    public String coupon_no ;
    /**
     * 优惠券标题
     */
    public String coupon_name ;
    /**
     * 优惠券类型   1:代金券   2:团购券
     */
    public int coupon_type ;
    
    public double getCoupon_sale_amount() {
        return coupon_sale_amount;
    }
    public void setCoupon_sale_amount(double coupon_sale_amount) {
        DecimalFormat df = new DecimalFormat("#.00");
        this.coupon_sale_amount = Double.parseDouble(df.format(coupon_sale_amount));
    }
    /**
     * 允许2位小数
     * @return
     */
    public double getCoupon_vaules_amount() {
        return coupon_vaules_amount;
    }
    public void setCoupon_vaules_amount(double coupon_vaules_amount) {
        DecimalFormat df = new DecimalFormat("#.00");
        this.coupon_vaules_amount = Double.parseDouble(df.format(coupon_vaules_amount));
    }
    /*---------------------实现Parcelable序列化---------------------------------*/
    public CouponEntity(Parcel in)
    {
        shop_id = in.readString();
        shop_name = in.readString();
        coupon_id = in.readString();
        coupon_no = in.readString();
        coupon_type = in.readInt();
    }
    public static final Parcelable.Creator<CouponEntity> CREATOR = new Parcelable.Creator<CouponEntity>() {
        public CouponEntity createFromParcel(Parcel in) {
            return new CouponEntity(in);
        }

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

    @Override
    public int describeContents() {
        // 内容描述，返回0即可
        return 0;
    }
    @Override
    public void writeToParcel(Parcel out, int arg1) {
        out.writeString(shop_id);
        out.writeString(shop_name);
        out.writeString(coupon_id);
        out.writeString(coupon_no);
        out.writeInt(coupon_type);
    }

}

    /*---------------------实现Parcelable序列化---------------------------------*/
    public CouponEntity(Parcel in)
    {
        shop_id = in.readString();
        shop_name = in.readString();
        coupon_id = in.readString();
        coupon_no = in.readString();
        coupon_type = in.readInt();
    }
    public static final Parcelable.Creator<CouponEntity> CREATOR = new Parcelable.Creator<CouponEntity>() {
        public CouponEntity createFromParcel(Parcel in) {
            return new CouponEntity(in);
        }

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

    @Override
    public int describeContents() {
        // 内容描述，返回0即可
        return 0;
    }
    @Override
    public void writeToParcel(Parcel out, int arg1) {
        out.writeString(shop_id);
        out.writeString(shop_name);
        out.writeString(coupon_id);
        out.writeString(coupon_no);
        out.writeInt(coupon_type);
    }