的带有集合带有bigdecimal的处理

定义一个商品信息类，其中包含bigdecimal、string

1.实现parcelable

2.重写describeContents 和writeToParcel的方法

describeContents 的方法默认处理即可为0，

writeToParcel是序列化处理，将数据写入到Parcel对象中,通过Parcel 对象将所有属性进行处理，若是bigdecimal则将写入string字符串

3.实例化静态内部对象CREATOR，其中createFromParcel是反序列化的处理，将writeToParcel方法序列化的数据进行反序列化。

注意：

writeToParcel中和createFromParcel中即调用的protected GoodInfoModel(Parcel in) 中的处理参数的顺序必须相同

上面这些就是序列化的基本流程，对于Android studio 中类实现Parcelable后重写方法，则自动会生成上述处理。

以下重点标出了bigdecimal的处理

public class GoodInfoModel implements Parcelable {

private BigDecimal total;

private BigDecimal weight;

private String goodsno;

private String barcode;

private BigDecimal qty;

protected GoodInfoModel(Parcel in) {

total = new BigDecimal(in.readString());

weight = new BigDecimal(in.readString());

goodsno = in.readString();

barcode = in.readString();

qty = new BigDecimal(in.readString());

}

public static final Creator CREATOR = new Creator() {

@Override

public GoodInfoModel createFromParcel(Parcel in) {

return new GoodInfoModel(in);

}

@Override

public GoodInfoModel[] newArray(int size) {

return new GoodInfoModel[size];

}

};

public BigDecimal getTotal() {

return total;

}

public void setTotal(BigDecimal total) {

this.total = total;

}

public BigDecimal getWeight() {

return weight;

}

public void setWeight(BigDecimal weight) {

this.weight = weight;

}

public String getGoodsno() {

return goodsno;

}

public void setGoodsno(String goodsno) {

this.goodsno = goodsno;

}

public String getBarcode() {

return barcode;

}

public void setBarcode(String barcode) {

this.barcode = barcode;

}

public BigDecimal getQty() {

return qty;

}

public void setQty(BigDecimal qty) {

this.qty = qty;

}

@Override

public int describeContents() {

return 0;

}

@Override

public void writeToParcel(Parcel dest, int flags) {

dest.writeString(getUnNullString(total + "", "0"));

dest.writeString(getUnNullString(weight + "", "0"));

dest.writeString(goodsno);

dest.writeString(barcode);

dest.writeString(getUnNullString(qty + "", "0"));

}

// 为空判断

private String getUnNullString(String s, String defaultData) {

return (s == null || TextUtils.isEmpty(s) || "null".equals(s)) ? defaultData

: s;

}

｝

订单类：

public class OrderInfo implements Parcelable {

private List goodInfoModels;

private BigDecimal total;

private int count;

private String flow_no;

public OrderInfo(Parcel in) {

goodInfoModels = in.createTypedArrayList(GoodInfoModel.CREATOR);

total = new BigDecimal(in.readString());

count = in.readInt();

flow_no = in.readString();

}

public static final Creator CREATOR = new Creator() {

@Override

public OrderInfo createFromParcel(Parcel in) {

return new OrderInfo(in);

}

@Override

public OrderInfo[] newArray(int size) {

return new OrderInfo[size];

}

};

public OrderInfo() {

}

// 为空判断

private String getUnNullString(String s, String defaultData) {

return (s == null || TextUtils.isEmpty(s) || "null".equals(s)) ? defaultData

: s;

}

public List getGoodInfoModels() {

return goodInfoModels;

}

public void setGoodInfoModels(List goodInfoModels) {

this.goodInfoModels = goodInfoModels;

}

public BigDecimal getTotal() {

return total;

}

public String getFlow_no() {

return flow_no;

}

public void setFlow_no(String flow_no) {

this.flow_no = flow_no;

}

public int getCount() {

return count;

}

public void setCount(int count) {

this.count = count;

}

@Override

public int describeContents() {

return 0;

}

@Override

public void writeToParcel(Parcel dest, int flags) {

dest.writeTypedList(goodInfoModels);

dest.writeString(getUnNullString(total + "", ""));

dest.writeInt(count);

dest.writeString(flow_no);

}

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