Android中怎么实现商城购物车功能，针对这个问题，这篇文章详细介绍了相对应的分析和解答，希望可以帮助更多想解决这个问题的小伙伴找到更简单易行的方法。

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一、实现步骤：

0、添加依赖库

1.购物车主界面布局文件(activity_main.xml)

2.购物车实现逻辑主界面(MainActivity.class)

3.使用ExpandableListView,继承BaseExpandableListAdapter

4.购物车数据的bean类(ShoppingCarDataBean.class)

5.分店铺实现布局

6.购物车中商品Item布局文件

二、实现过程：

0.添加依赖库

implementation 'com.jakewharton:butterknife:5.1.1' implementation 'com.google.code.gson:gson:2.2.4' implementation 'com.github.bumptech.glide:glide:3.7.0'

1.购物车主界面布局文件(activity_main.xml)

                             

2.购物车实现逻辑主界面(MainActivity.class)

package com.showly.yglin.shoppingcar;import android.content.Context;import android.content.DialogInterface;import android.os.Bundle;import android.support.v7.app.AppCompatActivity;import android.view.KeyEvent;import android.view.View;import android.widget.Button;import android.widget.ExpandableListView;import android.widget.ImageView;import android.widget.LinearLayout;import android.widget.RelativeLayout;import android.widget.TextView;import com.google.gson.Gson;import com.showly.yglin.shoppingcar.adapter.ShoppingCarAdapter;import com.showly.yglin.shoppingcar.bean.ShoppingCarDataBean;import com.showly.yglin.shoppingcar.customview.RoundCornerDialog;import com.showly.yglin.shoppingcar.util.ToastUtil;import java.util.ArrayList;import java.util.List;import butterknife.ButterKnife;import butterknife.InjectView;import butterknife.OnClick;/** * 购物车实现 * 主要功能： *  1.单选、全选； *  2.合计； *  3.删除； *  4.商品数量加减； */public class MainActivity extends AppCompatActivity { @InjectView(R.id.tv_titlebar_center) TextView tvTitlebarCenter; @InjectView(R.id.tv_titlebar_right) TextView tvTitlebarRight; @InjectView(R.id.elv_shopping_car) ExpandableListView elvShoppingCar; @InjectView(R.id.iv_select_all) ImageView ivSelectAll; @InjectView(R.id.ll_select_all) LinearLayout llSelectAll; @InjectView(R.id.btn_order) Button btnOrder; @InjectView(R.id.btn_delete) Button btnDelete; @InjectView(R.id.tv_total_price) TextView tvTotalPrice; @InjectView(R.id.rl_total_price) RelativeLayout rlTotalPrice; @InjectView(R.id.rl) RelativeLayout rl; @InjectView(R.id.iv_no_contant) ImageView ivNoContant; @InjectView(R.id.rl_no_contant) RelativeLayout rlNoContant; @InjectView(R.id.tv_titlebar_left) ImageView tvTitlebarLeft; //模拟的购物车数据（实际开发中使用后台返回的数据） private String shoppingCarData = "{\n" +  " \"code\": 200,\n" +  " \"datas\": [\n" +  " {\n" +  "  \"goods\": [\n" +  "  {\n" +  "   \"goods_id\": \"111111\",\n" +  "   \"goods_image\": \"http://pic.58pic.com/58pic/15/62/69/34K58PICbmZ_1024.jpg\",\n" +  "   \"goods_name\": \"三国演义\",\n" +  "   \"goods_num\": \"2\",\n" +  "   \"goods_price\": \"15.00\"\n" +  "  }\n" +  "  ],\n" +  "  \"store_id\": \"1\",\n" +  "  \"store_name\": \"书店杂货铺\"\n" +  " },\n" +  " {\n" +  "  \"goods\": [\n" +  "  {\n" +  "   \"goods_id\": \"222221\",\n" +  "   \"goods_image\": \"/upload/otherpic72/44846.jpg\",\n" +  "   \"goods_name\": \"西游记\",\n" +  "   \"goods_num\": \"2\",\n" +  "   \"goods_price\": \"12.00\"\n" +  "  },\n" +  "  {\n" +  "   \"goods_id\": \"222222\",\n" +  "   \"goods_image\": \"/upload/otherpic72/44847.jpg\",\n" +  "   \"goods_name\": \"封神榜\",\n" +  "   \"goods_num\": \"1\",\n" +  "   \"goods_price\": \"28.00\"\n" +  "  }\n" +  "  ],\n" +  "  \"store_id\": \"2\",\n" +  "  \"store_name\": \"亚马逊书店\"\n" +  " },\n" +  " {\n" +  "  \"goods\": [\n" +  "  {\n" +  "   \"goods_id\": \"333331\",\n" +  "   \"goods_image\": \"http://pic22.nipic.com/20120718/8002769_100147127333_2.jpg\",\n" +  "   \"goods_name\": \"水浒传\",\n" +  "   \"goods_num\": \"3\",\n" +  "   \"goods_price\": \"18.00\"\n" +  "  },\n" +  "  {\n" +  "   \"goods_id\": \"333332\",\n" +  "   \"goods_image\": \"http://pic.58pic.com/58pic/14/71/50/40e58PICy54_1024.jpg\",\n" +  "   \"goods_name\": \"封神演义\",\n" +  "   \"goods_num\": \"3\",\n" +  "   \"goods_price\": \"32.00\"\n" +  "  },\n" +  "  {\n" +  "   \"goods_id\": \"333333\",\n" +  "   \"goods_image\": \"/upload/otherpic72/44848.jpg\",\n" +  "   \"goods_name\": \"轩辕剑\",\n" +  "   \"goods_num\": \"3\",\n" +  "   \"goods_price\": \"3.80\"\n" +  "  }\n" +  "  ],\n" +  "  \"store_id\": \"3\",\n" +  "  \"store_name\": \"三味书屋\"\n" +  " }\n" +  " ]\n" +  "}"; private List datas; private Context context; private ShoppingCarAdapter shoppingCarAdapter; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); ButterKnife.inject(this); context = this; initExpandableListView(); initData(); } @OnClick({R.id.tv_titlebar_left, R.id.tv_titlebar_right}) public void onViewClicked(View view) { switch (view.getId()) {  case R.id.tv_titlebar_left://刷新数据  initData();  break;  case R.id.tv_titlebar_right://编辑  String edit = tvTitlebarRight.getText().toString().trim();  if (edit.equals("编辑")) {   tvTitlebarRight.setText("完成");   rlTotalPrice.setVisibility(View.GONE);   btnOrder.setVisibility(View.GONE);   btnDelete.setVisibility(View.VISIBLE);  } else {   tvTitlebarRight.setText("编辑");   rlTotalPrice.setVisibility(View.VISIBLE);   btnOrder.setVisibility(View.VISIBLE);   btnDelete.setVisibility(View.GONE);  }  break;  default:  break; } } /** * 初始化数据 */ private void initData() { //使用Gson解析购物车数据， //ShoppingCarDataBean为bean类，Gson按照bean类的格式解析数据 /**  * 实际开发中，通过请求后台接口获取购物车数据并解析  */ Gson gson = new Gson(); ShoppingCarDataBean shoppingCarDataBean = gson.fromJson(shoppingCarData, ShoppingCarDataBean.class); datas = shoppingCarDataBean.getDatas(); initExpandableListViewData(datas); } /** * 初始化ExpandableListView * 创建数据适配器adapter，并进行初始化操作 */ private void initExpandableListView() { shoppingCarAdapter = new ShoppingCarAdapter(context, llSelectAll, ivSelectAll, btnOrder, btnDelete, rlTotalPrice, tvTotalPrice); elvShoppingCar.setAdapter(shoppingCarAdapter); //删除的回调 shoppingCarAdapter.setOnDeleteListener(new ShoppingCarAdapter.OnDeleteListener() {  @Override  public void onDelete() {  initDelete();  /**   * 实际开发中，在此请求删除接口，删除成功后，   * 通过initExpandableListViewData（）方法刷新购物车数据。   * 注：通过bean类中的DatasBean的isSelect_shop属性，判断店铺是否被选中；   *   GoodsBean的isSelect属性，判断商品是否被选中，   *   （true为选中，false为未选中）   */  } }); //修改商品数量的回调 shoppingCarAdapter.setOnChangeCountListener(new ShoppingCarAdapter.OnChangeCountListener() {  @Override  public void onChangeCount(String goods_id) {  /**   * 实际开发中，在此请求修改商品数量的接口，商品数量修改成功后，   * 通过initExpandableListViewData（）方法刷新购物车数据。   */  } }); } /** * 初始化ExpandableListView的数据 * 并在数据刷新时，页面保持当前位置 * * @param datas 购物车的数据 */ private void initExpandableListViewData(List datas) { if (datas != null && datas.size() > 0) {  //刷新数据时，保持当前位置  shoppingCarAdapter.setData(datas);  //使所有组展开  for (int i = 0; i < shoppingCarAdapter.getGroupCount(); i++) {  elvShoppingCar.expandGroup(i);  }  //使组点击无效果  elvShoppingCar.setOnGroupClickListener(new ExpandableListView.OnGroupClickListener() {  @Override  public boolean onGroupClick(ExpandableListView parent, View v,      int groupPosition, long id) {   return true;  }  });  tvTitlebarRight.setVisibility(View.VISIBLE);  tvTitlebarRight.setText("编辑");  rlNoContant.setVisibility(View.GONE);  elvShoppingCar.setVisibility(View.VISIBLE);  rl.setVisibility(View.VISIBLE);  rlTotalPrice.setVisibility(View.VISIBLE);  btnOrder.setVisibility(View.VISIBLE);  btnDelete.setVisibility(View.GONE); } else {  tvTitlebarRight.setVisibility(View.GONE);  rlNoContant.setVisibility(View.VISIBLE);  elvShoppingCar.setVisibility(View.GONE);  rl.setVisibility(View.GONE); } } /** * 判断是否要弹出删除的dialog * 通过bean类中的DatasBean的isSelect_shop属性，判断店铺是否被选中； * GoodsBean的isSelect属性，判断商品是否被选中， */ private void initDelete() { //判断是否有店铺或商品被选中 //true为有，则需要刷新数据；反之，则不需要； boolean hasSelect = false; //创建临时的List，用于存储没有被选中的购物车数据 List datasTemp = new ArrayList<>(); for (int i = 0; i < datas.size(); i++) {  List goods = datas.get(i).getGoods();  boolean isSelect_shop = datas.get(i).getIsSelect_shop();  if (isSelect_shop) {  hasSelect = true;  //跳出本次循环，继续下次循环。  continue;  } else {  datasTemp.add(datas.get(i));  datasTemp.get(datasTemp.size() - 1).setGoods(new ArrayList());  }  for (int y = 0; y < goods.size(); y++) {  ShoppingCarDataBean.DatasBean.GoodsBean goodsBean = goods.get(y);  boolean isSelect = goodsBean.getIsSelect();  if (isSelect) {   hasSelect = true;  } else {   datasTemp.get(datasTemp.size() - 1).getGoods().add(goodsBean);  }  } } if (hasSelect) {  showDeleteDialog(datasTemp); } else {  ToastUtil.makeText(context, "请选择要删除的商品"); } } /** * 展示删除的dialog（可以自定义弹窗，不用删除即可） * * @param datasTemp */ private void showDeleteDialog(final List datasTemp) { View view = View.inflate(context, R.layout.dialog_two_btn, null); final RoundCornerDialog roundCornerDialog = new RoundCornerDialog(context, 0, 0, view, R.style.RoundCornerDialog); roundCornerDialog.show(); roundCornerDialog.setCanceledOnTouchOutside(false);// 设置点击屏幕Dialog不消失 roundCornerDialog.setOnKeyListener(keylistener);//设置点击返回键Dialog不消失 TextView tv_message = view.findViewById(R.id.tv_message); TextView tv_logout_confirm = view.findViewById(R.id.tv_logout_confirm); TextView tv_logout_cancel = view.findViewById(R.id.tv_logout_cancel); tv_message.setText("确定要删除商品吗？"); //确定 tv_logout_confirm.setOnClickListener(new View.OnClickListener() {  @Override  public void onClick(View v) {  roundCornerDialog.dismiss();  datas = datasTemp;  initExpandableListViewData(datas);  } }); //取消 tv_logout_cancel.setOnClickListener(new View.OnClickListener() {  @Override  public void onClick(View v) {  roundCornerDialog.dismiss();  } }); } DialogInterface.OnKeyListener keylistener = new DialogInterface.OnKeyListener() { public boolean onKey(DialogInterface dialog, int keyCode, KeyEvent event) {  if (keyCode == KeyEvent.KEYCODE_BACK && event.getRepeatCount() == 0) {  return true;  } else {  return false;  } } };}

3.使用ExpandableListView,继承BaseExpandableListAdapter

package com.showly.yglin.shoppingcar.adapter;import android.content.Context;import android.view.View;import android.view.ViewGroup;import android.widget.BaseExpandableListAdapter;import android.widget.Button;import android.widget.ImageView;import android.widget.LinearLayout;import android.widget.RelativeLayout;import android.widget.TextView;import com.bumptech.glide.Glide;import com.showly.yglin.shoppingcar.R;import com.showly.yglin.shoppingcar.bean.ShoppingCarDataBean;import com.showly.yglin.shoppingcar.util.ToastUtil;import java.text.DecimalFormat;import java.util.ArrayList;import java.util.List;import butterknife.ButterKnife;import butterknife.InjectView;/** * 购物车的adapter * 因为使用的是ExpandableListView，所以继承BaseExpandableListAdapter */public class ShoppingCarAdapter extends BaseExpandableListAdapter { private final Context context; private final LinearLayout llSelectAll; private final ImageView ivSelectAll; private final Button btnOrder; private final Button btnDelete; private final RelativeLayout rlTotalPrice; private final TextView tvTotalPrice; private List data; private boolean isSelectAll = false; private double total_price; public ShoppingCarAdapter(Context context, LinearLayout llSelectAll,    ImageView ivSelectAll, Button btnOrder, Button btnDelete,    RelativeLayout rlTotalPrice, TextView tvTotalPrice) { this.context = context; this.llSelectAll = llSelectAll; this.ivSelectAll = ivSelectAll; this.btnOrder = btnOrder; this.btnDelete = btnDelete; this.rlTotalPrice = rlTotalPrice; this.tvTotalPrice = tvTotalPrice; } /** * 自定义设置数据方法； * 通过notifyDataSetChanged()刷新数据，可保持当前位置 * * @param data 需要刷新的数据 */ public void setData(List data) { this.data = data; notifyDataSetChanged(); } @Override public int getGroupCount() { if (data != null && data.size() > 0) {  return data.size(); } else {  return 0; } } @Override public Object getGroup(int groupPosition) { return data.get(groupPosition); } @Override public long getGroupId(int groupPosition) { return groupPosition; } @Override public View getGroupView(final int groupPosition, final boolean isExpanded, View convertView, ViewGroup parent) { GroupViewHolder groupViewHolder; if (convertView == null) {  convertView = View.inflate(context, R.layout.item_shopping_car_group, null);  groupViewHolder = new GroupViewHolder(convertView);  convertView.setTag(groupViewHolder); } else {  groupViewHolder = (GroupViewHolder) convertView.getTag(); } final ShoppingCarDataBean.DatasBean datasBean = data.get(groupPosition); //店铺ID String store_id = datasBean.getStore_id(); //店铺名称 String store_name = datasBean.getStore_name(); if (store_name != null) {  groupViewHolder.tvStoreName.setText(store_name); } else {  groupViewHolder.tvStoreName.setText(""); } //店铺内的商品都选中的时候，店铺的也要选中 for (int i = 0; i < datasBean.getGoods().size(); i++) {  ShoppingCarDataBean.DatasBean.GoodsBean goodsBean = datasBean.getGoods().get(i);  boolean isSelect = goodsBean.getIsSelect();  if (isSelect) {  datasBean.setIsSelect_shop(true);  } else {  datasBean.setIsSelect_shop(false);  break;  } } //因为set之后要重新get，所以这一块代码要放到一起执行 //店铺是否在购物车中被选中 final boolean isSelect_shop = datasBean.getIsSelect_shop(); if (isSelect_shop) {  groupViewHolder.ivSelect.setImageResource(R.drawable.xuanze_xuanzhong); } else {  groupViewHolder.ivSelect.setImageResource(R.drawable.unselect); } //店铺选择框的点击事件 groupViewHolder.ll.setOnClickListener(new View.OnClickListener() {  @Override  public void onClick(View v) {  datasBean.setIsSelect_shop(!isSelect_shop);  List goods = datasBean.getGoods();  for (int i = 0; i < goods.size(); i++) {   ShoppingCarDataBean.DatasBean.GoodsBean goodsBean = goods.get(i);   goodsBean.setIsSelect(!isSelect_shop);  }  notifyDataSetChanged();  } }); //当所有的选择框都是选中的时候，全选也要选中 w: for (int i = 0; i < data.size(); i++) {  List goods = data.get(i).getGoods();  for (int y = 0; y < goods.size(); y++) {  ShoppingCarDataBean.DatasBean.GoodsBean goodsBean = goods.get(y);  boolean isSelect = goodsBean.getIsSelect();  if (isSelect) {   isSelectAll = true;  } else {   isSelectAll = false;   break w;//根据标记，跳出嵌套循环  }  } } if (isSelectAll) {  ivSelectAll.setBackgroundResource(R.drawable.xuanze_xuanzhong); } else {  ivSelectAll.setBackgroundResource(R.drawable.unselect); } //全选的点击事件 llSelectAll.setOnClickListener(new View.OnClickListener() {  @Override  public void onClick(View v) {  isSelectAll = !isSelectAll;  if (isSelectAll) {   for (int i = 0; i < data.size(); i++) {   List goods = data.get(i).getGoods();   for (int y = 0; y < goods.size(); y++) {    ShoppingCarDataBean.DatasBean.GoodsBean goodsBean = goods.get(y);    goodsBean.setIsSelect(true);   }   }  } else {   for (int i = 0; i < data.size(); i++) {   List goods = data.get(i).getGoods();   for (int y = 0; y < goods.size(); y++) {    ShoppingCarDataBean.DatasBean.GoodsBean goodsBean = goods.get(y);    goodsBean.setIsSelect(false);   }   }  }  notifyDataSetChanged();  } }); //合计的计算 total_price = 0.0; tvTotalPrice.setText("¥0.00"); for (int i = 0; i < data.size(); i++) {  List goods = data.get(i).getGoods();  for (int y = 0; y < goods.size(); y++) {  ShoppingCarDataBean.DatasBean.GoodsBean goodsBean = goods.get(y);  boolean isSelect = goodsBean.getIsSelect();  if (isSelect) {   String num = goodsBean.getGoods_num();   String price = goodsBean.getGoods_price();   double v = Double.parseDouble(num);   double v1 = Double.parseDouble(price);   total_price = total_price + v * v1;   //让Double类型完整显示，不用科学计数法显示大写字母E   DecimalFormat decimalFormat = new DecimalFormat("0.00");   tvTotalPrice.setText("¥" + decimalFormat.format(total_price));  }  } } //去结算的点击事件 btnOrder.setOnClickListener(new View.OnClickListener() {  @Override  public void onClick(View v) {  //创建临时的List，用于存储被选中的商品  List temp = new ArrayList<>();  for (int i = 0; i < data.size(); i++) {   List goods = data.get(i).getGoods();   for (int y = 0; y < goods.size(); y++) {   ShoppingCarDataBean.DatasBean.GoodsBean goodsBean = goods.get(y);   boolean isSelect = goodsBean.getIsSelect();   if (isSelect) {    temp.add(goodsBean);   }   }  }  if (temp != null && temp.size() > 0) {//如果有被选中的   /**   * 实际开发中，如果有被选中的商品，   * 则跳转到确认订单页面，完成后续订单流程。   */   ToastUtil.makeText(context, "跳转到确认订单页面，完成后续订单流程");  } else {   ToastUtil.makeText(context, "请选择要购买的商品");  }  } }); //删除的点击事件 btnDelete.setOnClickListener(new View.OnClickListener() {  @Override  public void onClick(View v) {  /**   * 实际开发中，通过回调请求后台接口实现删除操作   */  if (mDeleteListener != null) {   mDeleteListener.onDelete();  }  } }); return convertView; } static class GroupViewHolder { @InjectView(R.id.iv_select) ImageView ivSelect; @InjectView(R.id.tv_store_name) TextView tvStoreName; @InjectView(R.id.ll) LinearLayout ll; GroupViewHolder(View view) {  ButterKnife.inject(this, view); } } //------------------------------------------------------------------------------------------------ @Override public int getChildrenCount(int groupPosition) { if (data.get(groupPosition).getGoods() != null && data.get(groupPosition).getGoods().size() > 0) {  return data.get(groupPosition).getGoods().size(); } else {  return 0; } } @Override public Object getChild(int groupPosition, int childPosition) { return data.get(groupPosition).getGoods().get(childPosition); } @Override public long getChildId(int groupPosition, int childPosition) { return childPosition; } @Override public View getChildView(final int groupPosition, final int childPosition, boolean isLastChild, View convertView, ViewGroup parent) { ChildViewHolder childViewHolder; if (convertView == null) {  convertView = View.inflate(context, R.layout.item_shopping_car_child, null);  childViewHolder = new ChildViewHolder(convertView);  convertView.setTag(childViewHolder); } else {  childViewHolder = (ChildViewHolder) convertView.getTag(); } final ShoppingCarDataBean.DatasBean datasBean = data.get(groupPosition); //店铺ID String store_id = datasBean.getStore_id(); //店铺名称 String store_name = datasBean.getStore_name(); //店铺是否在购物车中被选中 final boolean isSelect_shop = datasBean.getIsSelect_shop(); final ShoppingCarDataBean.DatasBean.GoodsBean goodsBean = datasBean.getGoods().get(childPosition); //商品图片 String goods_image = goodsBean.getGoods_image(); //商品ID final String goods_id = goodsBean.getGoods_id(); //商品名称 String goods_name = goodsBean.getGoods_name(); //商品价格 String goods_price = goodsBean.getGoods_price(); //商品数量 String goods_num = goodsBean.getGoods_num(); //商品是否被选中 final boolean isSelect = goodsBean.getIsSelect(); Glide.with(context)  .load(R.drawable.img)  .into(childViewHolder.ivPhoto); if (goods_name != null) {  childViewHolder.tvName.setText(goods_name); } else {  childViewHolder.tvName.setText(""); } if (goods_price != null) {  childViewHolder.tvPriceValue.setText(goods_price); } else {  childViewHolder.tvPriceValue.setText(""); } if (goods_num != null) {  childViewHolder.tvEditBuyNumber.setText(goods_num); } else {  childViewHolder.tvEditBuyNumber.setText(""); } //商品是否被选中 if (isSelect) {  childViewHolder.ivSelect.setImageResource(R.drawable.xuanze_xuanzhong); } else {  childViewHolder.ivSelect.setImageResource(R.drawable.unselect); } //商品选择框的点击事件 childViewHolder.ivSelect.setOnClickListener(new View.OnClickListener() {  @Override  public void onClick(View v) {  goodsBean.setIsSelect(!isSelect);  if (!isSelect == false) {   datasBean.setIsSelect_shop(false);  }  notifyDataSetChanged();  } }); //加号的点击事件 childViewHolder.ivEditAdd.setOnClickListener(new View.OnClickListener() {  @Override  public void onClick(View v) {  //模拟加号操作  String num = goodsBean.getGoods_num();  Integer integer = Integer.valueOf(num);  integer++;  goodsBean.setGoods_num(integer + "");  notifyDataSetChanged();  /**   * 实际开发中，通过回调请求后台接口实现数量的加减   */  if (mChangeCountListener != null) {   mChangeCountListener.onChangeCount(goods_id);  }  } }); //减号的点击事件 childViewHolder.ivEditSubtract.setOnClickListener(new View.OnClickListener() {  @Override  public void onClick(View v) {  //模拟减号操作  String num = goodsBean.getGoods_num();  Integer integer = Integer.valueOf(num);  if (integer > 1) {   integer--;   goodsBean.setGoods_num(integer + "");   /**   * 实际开发中，通过回调请求后台接口实现数量的加减   */   if (mChangeCountListener != null) {   mChangeCountListener.onChangeCount(goods_id);   }  } else {   ToastUtil.makeText(context, "商品不能再减少了");  }  notifyDataSetChanged();  } }); if (childPosition == data.get(groupPosition).getGoods().size() - 1) {  childViewHolder.view.setVisibility(View.GONE);  childViewHolder.viewLast.setVisibility(View.VISIBLE); } else {  childViewHolder.view.setVisibility(View.VISIBLE);  childViewHolder.viewLast.setVisibility(View.GONE); } return convertView; } static class ChildViewHolder { @InjectView(R.id.iv_select) ImageView ivSelect; @InjectView(R.id.iv_photo) ImageView ivPhoto; @InjectView(R.id.tv_name) TextView tvName; @InjectView(R.id.tv_price_key) TextView tvPriceKey; @InjectView(R.id.tv_price_value) TextView tvPriceValue; @InjectView(R.id.iv_edit_subtract) ImageView ivEditSubtract; @InjectView(R.id.tv_edit_buy_number) TextView tvEditBuyNumber; @InjectView(R.id.iv_edit_add) ImageView ivEditAdd; @InjectView(R.id.view) View view; @InjectView(R.id.view_last) View viewLast; ChildViewHolder(View view) {  ButterKnife.inject(this, view); } } //----------------------------------------------------------------------------------------------- @Override public boolean isChildSelectable(int groupPosition, int childPosition) { return false; } @Override public boolean hasStableIds() { return false; } //删除的回调 public interface OnDeleteListener { void onDelete(); } public void setOnDeleteListener(OnDeleteListener listener) { mDeleteListener = listener; } private OnDeleteListener mDeleteListener; //修改商品数量的回调 public interface OnChangeCountListener { void onChangeCount(String goods_id); } public void setOnChangeCountListener(OnChangeCountListener listener) { mChangeCountListener = listener; } private OnChangeCountListener mChangeCountListener;}4.购物车数据的bean类(ShoppingCarDataBean.class)package com.showly.yglin.shoppingcar.bean;import java.util.List;/** * 购物车数据的bean类 */public class ShoppingCarDataBean { private int code; private List datas; public int getCode() { return code; } public void setCode(int code) { this.code = code; } public List getDatas() { return datas; } public void setDatas(List datas) { this.datas = datas; } public static class DatasBean { private String store_id; private String store_name; private boolean isSelect_shop; //店铺是否在购物车中被选中 private List goods; public boolean getIsSelect_shop() {  return isSelect_shop; } public void setIsSelect_shop(boolean select_shop) {  isSelect_shop = select_shop; } public String getStore_id() {  return store_id; } public void setStore_id(String store_id) {  this.store_id = store_id; } public String getStore_name() {  return store_name; } public void setStore_name(String store_name) {  this.store_name = store_name; } public List getGoods() {  return goods; } public void setGoods(List goods) {  this.goods = goods; } public static class GoodsBean {  private String goods_id;  private String goods_image;  private String goods_name;  private String goods_num;  private String goods_price;  private boolean isSelect; //商品是否在购物车中被选中  public boolean getIsSelect() {  return isSelect;  }  public void setIsSelect(boolean isSelect) {  this.isSelect = isSelect;  }  public String getGoods_id() {  return goods_id;  }  public void setGoods_id(String goods_id) {  this.goods_id = goods_id;  }  public String getGoods_image() {  return goods_image;  }  public void setGoods_image(String goods_image) {  this.goods_image = goods_image;  }  public String getGoods_name() {  return goods_name;  }  public void setGoods_name(String goods_name) {  this.goods_name = goods_name;  }  public String getGoods_num() {  return goods_num;  }  public void setGoods_num(String goods_num) {  this.goods_num = goods_num;  }  public String getGoods_price() {  return goods_price;  }  public void setGoods_price(String goods_price) {  this.goods_price = goods_price;  } } }}

5.分店铺实现布局

效果图(红色部分)：

在这里插入图片描述

6.购物车中商品Item布局文件

效果图：

在这里插入图片描述

                       

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