Rxjava+Retrofit+MVP实现购物车功能

本文实例为大家分享了Rxjava Retrofit实现购物车的具体代码，供大家参考，具体内容如下

效果图：

1.依赖

annotationProcessor 'com.jakewharton:butterknife-compiler:8.8.1'
 compile 'com.jakewharton:butterknife:8.8.1'
 compile 'com.android.support:recyclerview-v7:26.0.0-alpha1'
 compile 'com.squareup.retrofit2:retrofit:2.3.0'
 compile 'com.squareup.retrofit2:converter-gson:2.3.0'
 compile 'com.facebook.fresco:fresco:0.12.0'
 compile 'com.facebook.fresco:animated-base-support:0.12.0'
 compile 'com.facebook.fresco:animated-webp:0.12.0'
 compile 'com.facebook.fresco:webpsupport:0.12.0'
 compile 'io.reactivex.rxjava2:rxjava:2.1.7'
 compile 'com.squareup.retrofit2:adapter-rxjava2:2.3.0'
 compile 'io.reactivex.rxjava2:rxandroid:2.0.1'
 compile 'com.squareup.okhttp3:okhttp:3.9.0'
 compile 'com.google.code.gson:gson:2.8.1' 

2.布局

1.加减器布局   layout_add_delete

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:orientation="horizontal"
 android:weightSum="1"> 

 <TextView
 android:id="@+id/txt_delete"
 android:layout_width="30dp"
 android:layout_height="30dp"
 android:text="减"
 android:gravity="center"
 android:background="#8b948b"/> 

 <EditText
 android:id="@+id/et_number"
 android:layout_marginTop="2dp"
 android:layout_width="50dp"
 android:layout_height="30dp"
 android:background="@drawable/edit"
 android:layout_weight="0.00"
 android:gravity="center"
 android:text="1"/>
 <TextView
 android:id="@+id/txt_add"
 android:layout_width="30dp"
 android:layout_height="30dp"
 android:text="加"
 android:gravity="center"
 android:background="#8b948b"/> 

</LinearLayout> 

2. 商品详情布局   activity_main

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:fresco="http://schemas.android.com/apk/res-auto"
 android:layout_width="match_parent"
 android:layout_height="match_parent"> 

 <LinearLayout
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:orientation="vertical"> 

 <com.facebook.drawee.view.SimpleDraweeView
  android:id="@+id/my_image_view"
  android:layout_width="match_parent"
  android:layout_height="450dp"
  fresco:placeholderImage="@mipmap/ic_launcher" /> 

 <TextView
  android:id="@+id/goods_title"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:layout_margin="10dp"
  android:text="a啊啊是你的"
  android:textSize="20dp" /> 

 <TextView
  android:id="@+id/goods_price"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:layout_margin="10dp"
  android:text="￥ 18132"
  android:textColor="#dc5f2e"
  android:textSize="18dp" /> 

 <TextView
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:layout_margin="10dp"
  android:text="我是商家19"
  android:textSize="16dp" /> 

 </LinearLayout> 

 <LinearLayout
 android:layout_alignParentBottom="true"
 android:layout_width="match_parent"
 android:layout_height="50dp"
 android:orientation="horizontal"> 

 <Button
  android:id="@+id/btn_addcart"
  android:layout_weight="1"
  android:layout_width="0dp"
  android:layout_height="match_parent"
  android:background="#ffc207"
  android:text="加入购物车"/> 

 <Button
  android:id="@+id/btn_shopping"
  android:layout_weight="1"
  android:layout_width="0dp"
  android:layout_height="match_parent"
  android:background="#ff6b06"
  android:text="立即购买"/> 

 </LinearLayout> 

</RelativeLayout>

3.购物车布局 activity_main2

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
 xmlns:android="http://schemas.android.com/apk/res/android"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:orientation="vertical"> 

 <!--头布局-->
 <LinearLayout
 android:id="@+id/top_bar"
 android:layout_width="match_parent"
 android:layout_height="48dp"
 android:background="#f7f7f7"
 android:orientation="vertical" > 

 <RelativeLayout
  android:layout_width="match_parent"
  android:layout_height="48dp"
  android:background="@android:color/transparent"
  android:orientation="vertical" > 

  <ImageView
  android:id="@+id/back"
  android:layout_width="48dp"
  android:layout_height="48dp"
  android:layout_alignParentLeft="true"
  android:layout_gravity="center_vertical"
  android:padding="12dp"
  android:src="@drawable/back" /> 

  <TextView
  android:layout_width="match_parent"
  android:layout_height="wrap_content"
  android:gravity="center"
  android:minHeight="48dp"
  android:text="购物车"
  android:textColor="#1a1a1a"
  android:textSize="16sp" /> 

  <TextView
  android:id="@+id/edit"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:layout_alignParentRight="true"
  android:layout_marginRight="40dp"
  android:gravity="center"
  android:minHeight="48dp"
  android:text="编辑"
  android:textColor="#1a1a1a"
  android:textSize="14sp"
  android:visibility="visible" />
 </RelativeLayout>
 </LinearLayout> 

 <ExpandableListView
 android:id="@+id/exListView"
 android:layout_width="match_parent"
 android:layout_height="0dp"
 android:layout_weight="1"
 android:childIndicator="@null"
 android:groupIndicator="@null" >
 </ExpandableListView> 

 <LinearLayout
 android:layout_width="match_parent"
 android:layout_height="50dp"
 android:gravity="center_vertical"
 android:orientation="horizontal" > 

 <CheckBox
  android:id="@+id/all_chekbox"
  android:layout_marginLeft="20dp"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content" />
 <TextView
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:text="全选"/>
 <LinearLayout
  android:id="@+id/ll_info"
  android:layout_width="0dp"
  android:layout_height="wrap_content"
  android:layout_weight="4"
  >
  <LinearLayout
  android:layout_width="match_parent"
  android:layout_height="wrap_content"
  android:orientation="vertical"
  android:layout_marginRight="20dp"
  android:layout_weight="1"
  >
  <LinearLayout
   android:layout_width="match_parent"
   android:layout_height="wrap_content"
   android:orientation="horizontal"
   android:gravity="right"
   >
   <TextView
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:layout_marginLeft="5dp"
   android:text="合计:"
   android:textSize="18sp"
   android:textStyle="bold" /> 

   <TextView
   android:id="@+id/total_price"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:text="￥0.00"
   android:textColor="#f23232"
   android:textSize="16sp"
   android:textStyle="bold" />
  </LinearLayout>
  <TextView
   android:id="@+id/total_number"
   android:layout_width="match_parent"
   android:layout_height="wrap_content"
   android:text="共有商品:0件"
   android:gravity="right"
   android:textSize="16sp"
   android:textStyle="bold" />
  </LinearLayout>
  <TextView
  android:id="@+id/tv_go_to_pay"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:layout_weight="3"
  android:background="#fd7a05"
  android:clickable="true"
  android:gravity="center"
  android:text="结算"
  android:textColor="#FAFAFA" 

  />
  <TextView
  android:id="@+id/tv_go_to_del"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:layout_weight="3"
  android:background="#e2231c"
  android:clickable="true"
  android:gravity="center"
  android:text="删除"
  android:textColor="#FAFAFA"
  android:visibility="gone"
  />
 </LinearLayout> 

 </LinearLayout>
</LinearLayout>

4.二级列表组级布局 ex_group_item

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:background="#cfc3c3"
 android:orientation="horizontal"> 

 <CheckBox
 android:id="@+id/group_checkbox"
 android:layout_marginLeft="20dp"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:focusable="false"/> 

 <TextView
 android:id="@+id/shop_name"
 android:layout_marginLeft="20dp"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:textSize="16dp" /> 

</LinearLayout>

5.二级列表子布局  ex_child_item

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:app="http://schemas.android.com/apk/res-auto"
 xmlns:fresco="http://schemas.android.com/apk/res-auto"
 android:layout_width="match_parent"
 android:layout_height="230dp"
 android:orientation="horizontal"> 

 <CheckBox
 android:id="@+id/child_checkbox"
 android:layout_marginTop="50dp"
 android:layout_marginLeft="20dp"
 android:layout_marginBottom="50dp"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 /> 

 <RelativeLayout
 android:layout_marginLeft="20dp"
 android:layout_width="match_parent"
 android:layout_height="match_parent"> 

 <TextView
  android:id="@+id/shop_title"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:layout_alignParentLeft="true"
  android:layout_alignParentStart="true"
  android:layout_marginLeft="17dp"
  android:layout_marginStart="17dp"
  android:text="TextView"
  android:layout_alignParentTop="true" /> 

 <!--<ImageView
  android:id="@+id/shop_img"
  android:layout_width="90dp"
  android:layout_height="90dp"
  android:layout_marginTop="30dp"
  app:srcCompat="@mipmap/ic_launcher"
  android:layout_below="@+id/shop_name"
  android:layout_alignParentLeft="true"
  android:layout_alignParentStart="true" />-->
 <com.facebook.drawee.view.SimpleDraweeView
  android:id="@+id/shop_img"
  android:layout_width="90dp"
  android:layout_height="90dp"
  android:layout_marginTop="30dp"
  fresco:placeholderImage="@mipmap/ic_launcher"
  android:layout_below="@+id/shop_name"
  android:layout_alignParentLeft="true"
  android:layout_alignParentStart="true"
  /> 

 <TextView
  android:id="@+id/shop_price"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:layout_alignTop="@+id/shop_img"
  android:layout_centerHorizontal="true"
  android:layout_marginTop="10dp"
  android:text="￥20"
  android:textColor="#f23232"/> 

 <com.bwei.gepeng.myview.AddDeleteView
  android:id="@+id/adv"
  android:layout_width="160dp"
  android:layout_height="30dp"
  android:layout_below="@+id/shop_price"
  android:layout_marginTop="30dp"
  android:layout_marginLeft="140dp"
  app:left_text="-"
  app:right_text="+"
  app:middle_text="1"
  android:focusable="false"
  >
 </com.bwei.gepeng.myview.AddDeleteView> 

 <Button
  android:id="@+id/shop_delete"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:layout_alignParentEnd="true"
  android:layout_alignParentRight="true"
  android:layout_centerVertical="true"
  android:visibility="invisible"
  android:text="删除" />
 </RelativeLayout> 

</LinearLayout>

3.实体类

1. MessageBean

package com.bwei.gepeng.entity; 

public class MessageBean <T>{ 

 private String code;
 private T data;
 private String msg;
 private SellerBean seller; 

 public String getCode() {
 return code;
 } 

 public void setCode(String code) {
 this.code = code;
 } 

 public T getData() {
 return data;
 } 

 public void setData(T data) {
 this.data = data;
 } 

 public String getMsg() {
 return msg;
 } 

 public void setMsg(String msg) {
 this.msg = msg;
 } 

 public SellerBean getSeller() {
 return seller;
 } 

 public void setSeller(SellerBean seller) {
 this.seller = seller;
 } 

 public static class SellerBean {
 /**
  * description : 我是商家19
  * icon : http://120.27.23.105/images/icon.png
  * name : 商家19
  * productNums : 999
  * score : 5.0
  * sellerid : 19
  */ 

 private String description;
 private String icon;
 private String name;
 private int productNums;
 private double score;
 private int sellerid; 

 public String getDescription() {
  return description;
 } 

 public void setDescription(String description) {
  this.description = description;
 } 

 public String getIcon() {
  return icon;
 } 

 public void setIcon(String icon) {
  this.icon = icon;
 } 

 public String getName() {
  return name;
 } 

 public void setName(String name) {
  this.name = name;
 } 

 public int getProductNums() {
  return productNums;
 } 

 public void setProductNums(int productNums) {
  this.productNums = productNums;
 } 

 public double getScore() {
  return score;
 } 

 public void setScore(double score) {
  this.score = score;
 } 

 public int getSellerid() {
  return sellerid;
 } 

 public void setSellerid(int sellerid) {
  this.sellerid = sellerid;
 }
 }
}

2.GoodsShowBean

package com.bwei.gepeng.entity; 

public class GoodsShowBean { 

 private double bargainPrice;
 private String createtime;
 private String detailUrl;
 private String images;
 private int itemtype;
 private int pid;
 private double price;
 private int pscid;
 private int salenum;
 private int sellerid;
 private String subhead;
 private String title; 

 public double getBargainPrice() {
  return bargainPrice;
 } 

 public void setBargainPrice(double bargainPrice) {
  this.bargainPrice = bargainPrice;
 } 

 public String getCreatetime() {
  return createtime;
 } 

 public void setCreatetime(String createtime) {
  this.createtime = createtime;
 } 

 public String getDetailUrl() {
  return detailUrl;
 } 

 public void setDetailUrl(String detailUrl) {
  this.detailUrl = detailUrl;
 } 

 public String getImages() {
  return images;
 } 

 public void setImages(String images) {
  this.images = images;
 } 

 public int getItemtype() {
  return itemtype;
 } 

 public void setItemtype(int itemtype) {
  this.itemtype = itemtype;
 } 

 public int getPid() {
  return pid;
 } 

 public void setPid(int pid) {
  this.pid = pid;
 } 

 public double getPrice() {
  return price;
 } 

 public void setPrice(double price) {
  this.price = price;
 } 

 public int getPscid() {
  return pscid;
 } 

 public void setPscid(int pscid) {
  this.pscid = pscid;
 } 

 public int getSalenum() {
  return salenum;
 } 

 public void setSalenum(int salenum) {
  this.salenum = salenum;
 } 

 public int getSellerid() {
  return sellerid;
 } 

 public void setSellerid(int sellerid) {
  this.sellerid = sellerid;
 } 

 public String getSubhead() {
  return subhead;
 } 

 public void setSubhead(String subhead) {
  this.subhead = subhead;
 } 

 public String getTitle() {
  return title;
 } 

 public void setTitle(String title) {
  this.title = title;
 } 

 @Override
 public String toString() {
 return "GoodsShowBean{" +
  "bargainPrice=" + bargainPrice +
  ", createtime='" + createtime + '\'' +
  ", detailUrl='" + detailUrl + '\'' +
  ", images='" + images + '\'' +
  ", itemtype=" + itemtype +
  ", pid=" + pid +
  ", price=" + price +
  ", pscid=" + pscid +
  ", salenum=" + salenum +
  ", sellerid=" + sellerid +
  ", subhead='" + subhead + '\'' +
  ", title='" + title + '\'' +
  '}';
 }
}

3. CartBean

package com.bwei.gepeng.entity; 

import java.util.List; 

public class CartBean {
 private String sellerName;
 private String sellerid;
 private List<ListBean> list; 

 public String getSellerName() {
 return sellerName;
 } 

 public void setSellerName(String sellerName) {
 this.sellerName = sellerName;
 } 

 public String getSellerid() {
 return sellerid;
 } 

 public void setSellerid(String sellerid) {
 this.sellerid = sellerid;
 } 

 public List<ListBean> getList() {
 return list;
 } 

 public void setList(List<ListBean> list) {
 this.list = list;
 } 

 public static class ListBean { 

 private double bargainPrice;
 private String createtime;
 private String detailUrl;
 private String images;
 private int num;
 private int pid;
 private double price;
 private int pscid;
 private int selected;
 private int sellerid;
 private String subhead;
 private String title; 

 public double getBargainPrice() {
  return bargainPrice;
 } 

 public void setBargainPrice(double bargainPrice) {
  this.bargainPrice = bargainPrice;
 } 

 public String getCreatetime() {
  return createtime;
 } 

 public void setCreatetime(String createtime) {
  this.createtime = createtime;
 } 

 public String getDetailUrl() {
  return detailUrl;
 } 

 public void setDetailUrl(String detailUrl) {
  this.detailUrl = detailUrl;
 } 

 public String getImages() {
  return images;
 } 

 public void setImages(String images) {
  this.images = images;
 } 

 public int getNum() {
  return num;
 } 

 public void setNum(int num) {
  this.num = num;
 } 

 public int getPid() {
  return pid;
 } 

 public void setPid(int pid) {
  this.pid = pid;
 } 

 public double getPrice() {
  return price;
 } 

 public void setPrice(double price) {
  this.price = price;
 } 

 public int getPscid() {
  return pscid;
 } 

 public void setPscid(int pscid) {
  this.pscid = pscid;
 } 

 public int getSelected() {
  return selected;
 } 

 public void setSelected(int selected) {
  this.selected = selected;
 } 

 public int getSellerid() {
  return sellerid;
 } 

 public void setSellerid(int sellerid) {
  this.sellerid = sellerid;
 } 

 public String getSubhead() {
  return subhead;
 } 

 public void setSubhead(String subhead) {
  this.subhead = subhead;
 } 

 public String getTitle() {
  return title;
 } 

 public void setTitle(String title) {
  this.title = title;
 }
 } 

 @Override
 public String toString() {
 return "CartBean{" +
  "sellerName='" + sellerName + '\'' +
  ", sellerid='" + sellerid + '\'' +
  ", list=" + list +
  '}';
 }
}

4. GroupBean

package com.bwei.gepeng.entity; 

public class GroupBean {
 private String sellerName;
 private boolean gropuCb; 

 public GroupBean(String sellerName, boolean gropuCb) {
 this.sellerName = sellerName;
 this.gropuCb = gropuCb;
 } 

 public String getSellerName() {
 return sellerName;
 } 

 public void setSellerName(String sellerName) {
 this.sellerName = sellerName;
 } 

 public boolean isGropuCb() {
 return gropuCb;
 } 

 public void setGropuCb(boolean gropuCb) {
 this.gropuCb = gropuCb;
 } 

 @Override
 public String toString() {
 return "GroupBean{" +
  "sellerName='" + sellerName + '\'' +
  ", gropuCb=" + gropuCb +
  '}';
 }
}

5.ChildBean

package com.bwei.gepeng.entity; 

public class ChildBean {
 private String title;
 private String images;
 private double price;
 private int num;
 private boolean childCb;
 private boolean btn;
 private int pid; 

 public ChildBean(String title, String images, double price, int num, boolean childCb, boolean btn, int pid) {
 this.title = title;
 this.images = images;
 this.price = price;
 this.num = num;
 this.childCb = childCb;
 this.btn = btn;
 this.pid = pid;
 } 

 public int getPid() {
 return pid;
 } 

 public void setPid(int pid) {
 this.pid = pid;
 } 

 public boolean isBtn() {
 return btn;
 } 

 public void setBtn(boolean btn) {
 this.btn = btn;
 } 

 public String getTitle() {
 return title;
 } 

 public void setTitle(String title) {
 this.title = title;
 } 

 public String getImages() {
 return images;
 } 

 public void setImages(String images) {
 this.images = images;
 } 

 public double getPrice() {
 return price;
 } 

 public void setPrice(double price) {
 this.price = price;
 } 

 public int getNum() {
 return num;
 } 

 public void setNum(int num) {
 this.num = num;
 } 

 public boolean isChildCb() {
 return childCb;
 } 

 public void setChildCb(boolean childCb) {
 this.childCb = childCb;
 } 

 @Override
 public String toString() {
 return "ChildBean{" +
  "title='" + title + '\'' +
  ", images='" + images + '\'' +
  ", price=" + price +
  ", num=" + num +
  ", childCb=" + childCb +
  ", btn=" + btn +
  ", pid=" + pid +
  '}';
 }
}

4.接口

1.ApiService

package com.bwei.gepeng.http; 

import com.bwei.gepeng.entity.CartBean;
import com.bwei.gepeng.entity.GoodsShowBean;
import com.bwei.gepeng.entity.MessageBean; 

import java.util.List;
import java.util.Map; 

import io.reactivex.Flowable;
import retrofit2.http.GET;
import retrofit2.http.QueryMap; 

public interface ApiService {
 //查询商品详情75
 //http://120.27.23.105/product/getProductDetail?pid=75&source=android
 @GET("product/getProductDetail")
 Flowable<MessageBean<GoodsShowBean>> getNews(@QueryMap Map<String,String> map); 

 //查询购物车
 //http://120.27.23.105/product/getCarts?uid=3802&source=android
 @GET("product/getCarts")
 Flowable<MessageBean<List<CartBean>>> getCart(@QueryMap Map<String,String> map); 

 //删除购物车
 //http://120.27.23.105/product/getCarts?uid=3802&source=android
 @GET("product/deleteCart")
 Flowable<MessageBean<List<CartBean>>> getDel(@QueryMap Map<String,String> map); 

 //添加购物车
 //http://120.27.23.105/product/addCart?uid=3802&pid=75&source=android
 @GET("product/addCart")
 Flowable<MessageBean<List<CartBean>>> getAdd(@QueryMap Map<String,String> map);
}
2.IView
[java] view plain copy
public interface IView {
 void OnSuccess(Object o,String tag);
 void OnFailed(Exception e,String tag);
}
3.IPresenter
[java] view plain copy
import java.util.Map; 

public interface IPresenter {
 void getData(Map<String,String> map, String tag);
}
4.IModel
[java] view plain copy
import java.util.Map; 

public interface IModel {
 void getData(Map<String,String> map,String tag);
}

5.代码

1.自定义View 加减器 AddDeleteView

package com.bwei.gepeng.myview; 

import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Color;
import android.util.AttributeSet;
import android.view.View;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.TextView; 

import com.bwei.gepeng.R; 

public class AddDeleteView extends LinearLayout {
 private OnAddDelClickListener listener;
 private EditText etNumber; 

 //对外提供一个点击的回调接口
 public interface OnAddDelClickListener{
 void onAddClick(View v);
 void onDelClick(View v);
 } 

 public void setOnAddDelClickListener(OnAddDelClickListener listener){
 if(listener!=null){
  this.listener=listener;
 }
 } 

 public AddDeleteView(Context context) {
 this(context,null);
 } 

 public AddDeleteView(Context context, AttributeSet attrs) {
 this(context, attrs,0);
 } 

 public AddDeleteView(Context context, AttributeSet attrs, int defStyleAttr) {
 super(context, attrs, defStyleAttr);
 initView(context, attrs, defStyleAttr);
 } 

 private void initView(Context context, AttributeSet attrs, int defStyleAttr) {
 View.inflate(context, R.layout.layout_add_delete,this); 

 //获取控件
 TextView txtDelete=findViewById(R.id.txt_delete);
 TextView txtAdd=findViewById(R.id.txt_add);
 etNumber = findViewById(R.id.et_number); 

 TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.AddDeleteViewStyle); 

 String leftText = typedArray.getString(R.styleable.AddDeleteViewStyle_left_text);
 String rightText = typedArray.getString(R.styleable.AddDeleteViewStyle_right_text);
 String middleText = typedArray.getString(R.styleable.AddDeleteViewStyle_middle_text);
 int color = typedArray.getColor(R.styleable.AddDeleteViewStyle_left_text_color, Color.RED); 

 txtDelete.setText(leftText);
 txtAdd.setText(rightText);
 etNumber.setText(middleText);
 txtDelete.setTextColor(color); 

 //回收
 typedArray.recycle(); 

 txtDelete.setOnClickListener(new OnClickListener() {
  @Override
  public void onClick(View view) {
  listener.onDelClick(view);
  }
 }); 

 txtAdd.setOnClickListener(new OnClickListener() {
  @Override
  public void onClick(View view) {
  listener.onAddClick(view);
  }
 }); 

 }
 //对外提供一个修改数字的方法
 public void setNumber(int number){
 if(number>0){
  etNumber.setText(number+"");
 }
 }
 //对外提供一个获取当前数字的方法
 public int getNumber(){
 String string = etNumber.getText().toString();
 int i = Integer.parseInt(string);
 return i;
 } 

} 

2.Retrofit工具类 RetrofitUtils

package com.bwei.gepeng.http; 

import java.io.IOException; 

import okhttp3.HttpUrl;
import okhttp3.Interceptor;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;
import retrofit2.Retrofit;
import retrofit2.adapter.rxjava2.RxJava2CallAdapterFactory;
import retrofit2.converter.gson.GsonConverterFactory; 

public class RetrofitUtils {
 private static volatile RetrofitUtils instance;
 private final Retrofit retrofit; 

 private RetrofitUtils(){
 OkHttpClient client = new OkHttpClient.Builder().addInterceptor(new Logger()).build(); 

 retrofit = new Retrofit.Builder()
  .client(client)
  .addCallAdapterFactory(RxJava2CallAdapterFactory.create())
  .addConverterFactory(GsonConverterFactory.create())
  .baseUrl("http://120.27.23.105/")
  .build();
 } 

 public static RetrofitUtils getInstance(){
 if(instance==null){
  synchronized (RetrofitUtils.class){
  if(instance==null){
   instance=new RetrofitUtils();
  }
  }
 }
 return instance;
 } 

 public ApiService getApiService(){
 ApiService apiService = retrofit.create(ApiService.class);
 return apiService;
 } 

 class Logger implements Interceptor {
 @Override
 public Response intercept(Chain chain) throws IOException {
  Request original = chain.request();
  HttpUrl url=original.url().newBuilder()
   .addQueryParameter("source","android")
   .build();
  //添加请求头
  Request request = original.newBuilder()
   .url(url)
   .build();
  return chain.proceed(request);
 }
 }
} 

3.M层

package com.bwei.gepeng.model; 

import com.bwei.gepeng.entity.CartBean;
import com.bwei.gepeng.entity.GoodsShowBean;
import com.bwei.gepeng.entity.MessageBean;
import com.bwei.gepeng.http.RetrofitUtils;
import com.bwei.gepeng.presenter.NewsPresenter; 

import java.util.List;
import java.util.Map; 

import io.reactivex.Flowable; 

public class Model implements IModel{ 

 private NewsPresenter presenter;
 public Model(NewsPresenter presenter) {
 this.presenter = presenter;
 } 

 @Override
 public void getData(Map<String, String> map, String tag) {
 if(tag.equals("cart")){
  Flowable<MessageBean<List<CartBean>>> flowable = RetrofitUtils.getInstance().getApiService().getCart(map);
  presenter.get2(flowable,tag);
 }else if(tag.equals("goods")){
  Flowable<MessageBean<GoodsShowBean>> flowable = RetrofitUtils.getInstance().getApiService().getNews(map);
  presenter.get(flowable,tag);
 }else if(tag.equals("del")){
  Flowable<MessageBean<List<CartBean>>> flowable = RetrofitUtils.getInstance().getApiService().getDel(map);
  presenter.get3(flowable,tag);
 }else if(tag.equals("add")){
  Flowable<MessageBean<List<CartBean>>> flowable = RetrofitUtils.getInstance().getApiService().getAdd(map);
  presenter.get4(flowable,tag);
 } 

 }
}

4.P层

package com.bwei.gepeng.presenter; 

import com.bwei.gepeng.entity.CartBean;
import com.bwei.gepeng.entity.GoodsShowBean;
import com.bwei.gepeng.entity.MessageBean;
import com.bwei.gepeng.model.Model;
import com.bwei.gepeng.view.IView; 

import java.util.List;
import java.util.Map; 

import io.reactivex.Flowable;
import io.reactivex.android.schedulers.AndroidSchedulers;
import io.reactivex.schedulers.Schedulers;
import io.reactivex.subscribers.DisposableSubscriber; 

public class NewsPresenter implements IPresenter{ 

 private IView iView;
 private DisposableSubscriber<MessageBean<GoodsShowBean>> subscriber;
 private DisposableSubscriber<MessageBean<List<CartBean>>> subscriber2;
 private DisposableSubscriber<MessageBean<List<CartBean>>> subscriber3;
 private DisposableSubscriber<MessageBean<List<CartBean>>> subscriber4; 

 public void attachView(IView iView){
 this.iView=iView;
 } 

 @Override
 public void getData(Map<String, String> map, String tag) {
 Model model = new Model(this);
 model.getData(map,tag);
 } 

 public void detachView(){
 if(iView!=null){
  iView=null;
 }
 if(subscriber!=null){
  if(!subscriber.isDisposed()){
  subscriber.dispose();
  }
 }
 if(subscriber2!=null){
  if(!subscriber2.isDisposed()){
  subscriber2.dispose();
  }
 }
 if(subscriber3!=null){
  if(!subscriber3.isDisposed()){
  subscriber3.dispose();
  }
 }
 if(subscriber4!=null){
  if(!subscriber4.isDisposed()){
  subscriber4.dispose();
  }
 }
 } 

 //查询购物车
 public void get(Flowable<MessageBean<GoodsShowBean>> flowable , final String tag) {
 subscriber = flowable.subscribeOn(Schedulers.io())
  .observeOn(AndroidSchedulers.mainThread())
  .subscribeWith(new DisposableSubscriber<MessageBean<GoodsShowBean>>() {
   @Override
   public void onNext(MessageBean<GoodsShowBean> listMessageBean) {
   if (listMessageBean != null) {
    GoodsShowBean data = listMessageBean.getData();
    iView.OnSuccess(data,tag);
   }
   } 

   @Override
   public void onError(Throwable t) {
   iView.OnFailed(new Exception(t),tag);
   } 

   @Override
   public void onComplete() { 

   }
  });
 } 

 //查询商品详情75
 public void get2(Flowable<MessageBean<List<CartBean>>> flowable, final String tag) {
 subscriber2 = flowable.subscribeOn(Schedulers.io())
  .observeOn(AndroidSchedulers.mainThread())
  .subscribeWith(new DisposableSubscriber<MessageBean<List<CartBean>>>() {
   @Override
   public void onNext(MessageBean<List<CartBean>> list) {
   if (list != null) {
    List<CartBean> data = list.getData();
    if(data!=null){
    iView.OnSuccess(data,tag);
    }
   }
   } 

   @Override
   public void onError(Throwable t) {
   iView.OnFailed(new Exception(t),tag);
   } 

   @Override
   public void onComplete() { 

   }
  });
 } 

 //删除购物车
 public void get3(Flowable<MessageBean<List<CartBean>>> flowable, final String tag) {
 subscriber3 = flowable.subscribeOn(Schedulers.io())
  .observeOn(AndroidSchedulers.mainThread())
  .subscribeWith(new DisposableSubscriber<MessageBean<List<CartBean>>>() {
   @Override
   public void onNext(MessageBean<List<CartBean>> list) {
   if (list != null) {
    String code = list.getMsg();
    iView.OnSuccess(code,tag);
   }
   } 

   @Override
   public void onError(Throwable t) {
   iView.OnFailed(new Exception(t),tag);
   } 

   @Override
   public void onComplete() { 

   }
  });
 } 

 //添加购物车
 public void get4(Flowable<MessageBean<List<CartBean>>> flowable, final String tag) {
 subscriber4 = flowable.subscribeOn(Schedulers.io())
  .observeOn(AndroidSchedulers.mainThread())
  .subscribeWith(new DisposableSubscriber<MessageBean<List<CartBean>>>() {
   @Override
   public void onNext(MessageBean<List<CartBean>> list) {
   if (list != null) {
    String code = list.getMsg();
    iView.OnSuccess(code,tag);
   }
   } 

   @Override
   public void onError(Throwable t) {
   iView.OnFailed(new Exception(t),tag);
   } 

   @Override
   public void onComplete() { 

   }
  });
 }
}

5.MainActivity 商品详情页面

package com.bwei.gepeng.view; 

import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast; 

import com.bwei.gepeng.R;
import com.bwei.gepeng.entity.GoodsShowBean;
import com.bwei.gepeng.presenter.NewsPresenter;
import com.facebook.drawee.view.SimpleDraweeView; 

import java.util.HashMap;
import java.util.Map; 

import butterknife.BindView;
import butterknife.ButterKnife;
import butterknife.OnClick; 

public class MainActivity extends AppCompatActivity implements IView { 

 @BindView(R.id.my_image_view)
 SimpleDraweeView myImageView;
 @BindView(R.id.goods_title)
 TextView goodsTitle;
 @BindView(R.id.goods_price)
 TextView goodsPrice;
 private NewsPresenter presenter; 

 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);
 ButterKnife.bind(this); 

 presenter = new NewsPresenter();
 presenter.attachView(this);
 //http://120.27.23.105/product/getProductDetail?pid=75&source=android
 Map<String, String> map = new HashMap<>();
 map.put("pid", "75");
 presenter.getData(map, "goods"); 

 } 

 @Override
 public void OnSuccess(Object o, String tag) {
 if (tag.equals("goods")) {
  if (o != null) {
  GoodsShowBean data = (GoodsShowBean) o;
  //Log.e("Gp", "OnSuccess: " + data.toString()); 

  myImageView.setImageURI(data.getImages().split("\\|")[0]);
  goodsTitle.setText(data.getTitle());
  goodsPrice.setText("￥ "+data.getPrice());
  }
 }else if(tag.equals("add")){
  if (o != null) {
  String msg = (String) o;
  Toast.makeText(MainActivity.this, msg, Toast.LENGTH_SHORT).show();
  }
 }
 } 

 @Override
 public void OnFailed(Exception e, String tag) { 

 } 

 @OnClick({R.id.btn_addcart, R.id.btn_shopping})
 public void onViewClicked(View view) {
 switch (view.getId()) {
  case R.id.btn_addcart:
  Map<String, String> map = new HashMap<>();
  map.put("uid", "3802");
  map.put("pid", "75");
  presenter.getData(map, "add");
  //Toast.makeText(MainActivity.this,"添加成功",Toast.LENGTH_SHORT).show();
  break;
  case R.id.btn_shopping:
  Intent intent=new Intent(MainActivity.this,Main2Activity.class);
  startActivity(intent);
  break;
 }
 }
}

6.二级列表适配器 ExpandableAdapter

package com.bwei.gepeng.adapter; 

import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseExpandableListAdapter;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.TextView;
import android.widget.Toast; 

import com.bwei.gepeng.R;
import com.bwei.gepeng.entity.ChildBean;
import com.bwei.gepeng.entity.GroupBean;
import com.bwei.gepeng.myview.AddDeleteView;
import com.bwei.gepeng.view.Main2Activity;
import com.facebook.drawee.view.SimpleDraweeView; 

import java.util.ArrayList;
import java.util.List; 

public class ExpandableAdapter extends BaseExpandableListAdapter {
 private Context context;
 private List<GroupBean> groupBeen=new ArrayList<>();
 private List<List<ChildBean>> childBeen=new ArrayList<>(); 

 private Main2Activity main; 

 public ExpandableAdapter(Context context, List<GroupBean> groupBeen, List<List<ChildBean>> childBeen) {
 this.context = context;
 this.groupBeen = groupBeen;
 this.childBeen = childBeen;
 this.main = (Main2Activity) context;
 }
 //接口回调
 private onDeleteGoods onDleGoods; 

 public interface onDeleteGoods{
 void onDelGoods(int i,int i1,String pid);
 } 

 public void setOnDeleteGoods(onDeleteGoods onDleGoods){
 this.onDleGoods=onDleGoods;
 } 

 @Override
 public int getGroupCount() {
 return groupBeen.size();
 } 

 @Override
 public int getChildrenCount(int i) {
 return childBeen.get(i).size();
 } 

 @Override
 public Object getGroup(int i) {
 return groupBeen.get(i).getSellerName();
 } 

 @Override
 public Object getChild(int i, int i1) {
 return childBeen.get(i).get(i1).getTitle();
 } 

 @Override
 public long getGroupId(int i) {
 return i;
 } 

 @Override
 public long getChildId(int i, int i1) {
 return i1;
 } 

 @Override
 public boolean hasStableIds() {
 return false;
 } 

 //一级组
 @Override
 public View getGroupView(final int i, boolean b, View view, ViewGroup viewGroup) {
 //加载视图
 view=View.inflate(context, R.layout.ex_group_item ,null); 

 final CheckBox groupCb= view.findViewById(R.id.group_checkbox);
 TextView shopName= view.findViewById(R.id.shop_name); 

 shopName.setText(groupBeen.get(i).getSellerName());
 groupCb.setChecked(groupBeen.get(i).isGropuCb()); 

 //组复选按钮
 groupCb.setOnClickListener(new View.OnClickListener() {
  @Override
  public void onClick(View view) {
  boolean gchecked = groupCb.isChecked();
  groupBeen.get(i).setGropuCb(gchecked);
  //Main2Activity main= (Main2Activity) context;
  for(GroupBean i: groupBeen){
   boolean gropuCb = i.isGropuCb();
   if(!gropuCb){
   main.allCheckbox.setChecked(false);
   break;
   }else{
   main.allCheckbox.setChecked(true);
   }
  }
  int size = childBeen.get(i).size();
  if(gchecked){
   for(int r=0;r<size;r++){
   //Toast.makeText(context,"group按钮"+ gchecked+""+size, Toast.LENGTH_SHORT).show();
   childBeen.get(i).get(r).setChildCb(true);
   }
  }else{
   for(int r=0;r<size;r++){
   //Toast.makeText(context,"group按钮"+ gchecked+""+size, Toast.LENGTH_SHORT).show();
   childBeen.get(i).get(r).setChildCb(false);
   }
  }
  notifyDataSetChanged();
  main.changesum(childBeen);
  }
 });
 return view;
 } 

 //二级组
 @Override
 public View getChildView(final int i, final int i1, boolean b, View v, ViewGroup viewGroup) {
 //加载视图
 v=View.inflate(context, R.layout.ex_child_item ,null); 

 final CheckBox childCb = v.findViewById(R.id.child_checkbox);
 TextView shopTitle= v.findViewById(R.id.shop_title);
 TextView shopPrice= v.findViewById(R.id.shop_price);
 //ImageView shopImg=v.findViewById(R.id.shop_img);
 //draweeView.setImageURI(uri);
 SimpleDraweeView shopImg = v.findViewById(R.id.shop_img);
 final AddDeleteView adv = v.findViewById(R.id.adv);
 Button shop_delete=v.findViewById(R.id.shop_delete); 

 childCb.setChecked(childBeen.get(i).get(i1).isChildCb());
 String images = childBeen.get(i).get(i1).getImages();
 //Glide.with(context).load(images).into(shopImg);
 shopImg.setImageURI(images);
 shopTitle.setText(childBeen.get(i).get(i1).getTitle());
 shopPrice.setText(childBeen.get(i).get(i1).getPrice()+"");
 adv.setNumber(childBeen.get(i).get(i1).getNum()); 

 //final Main2Activity main= (Main2Activity) context;
 //控制删除按钮的显隐
 if(childBeen.get(i).get(i1).isBtn()){
  shop_delete.setVisibility(View.VISIBLE);
 }else{
  shop_delete.setVisibility(View.INVISIBLE);
 }
 //删除按钮监听
 shop_delete.setOnClickListener(new View.OnClickListener() {
  @Override
  public void onClick(View view) { 

  onDleGoods.onDelGoods(i,i1,childBeen.get(i).get(i1).getPid()+"");
  }
 }); 

 //加减器逻辑
 adv.setOnAddDelClickListener(new AddDeleteView.OnAddDelClickListener() {
  @Override
  public void onAddClick(View v) {
  int number = adv.getNumber();
  number++;
  adv.setNumber(number);
  childBeen.get(i).get(i1).setNum(number);
  main.changesum(childBeen);
  } 

  @Override
  public void onDelClick(View v) {
  int number = adv.getNumber();
  if(number==1){
   Toast.makeText(context,"用户最小数量为1",Toast.LENGTH_SHORT).show();
  }
  number--;
  adv.setNumber(number);
  childBeen.get(i).get(i1).setNum(number);
  main.changesum(childBeen);
  }
 }); 

 //二级组的复选框监听
 childCb.setOnClickListener(new View.OnClickListener() {
  @Override
  public void onClick(View view) {
  boolean flag=false;
  boolean cchecked = childCb.isChecked();
  childBeen.get(i).get(i1).setChildCb(cchecked);
  //Toast.makeText(context,"child按钮"+ cchecked+""+i1, Toast.LENGTH_SHORT).show();
  // Main2Activity main= (Main2Activity) context;
  for (List<ChildBean> i1:childBeen){
   for(int r=0;r<i1.size();r++) {
   boolean childCb1 = i1.get(r).isChildCb();
   if(!childCb1){
    main.allCheckbox.setChecked(false);
    groupBeen.get(i).setGropuCb(false);
    flag=true;
    break;
   }else{
    main.allCheckbox.setChecked(true);
    groupBeen.get(i).setGropuCb(true);
   }
   }
   if(flag){
   break;
   }
  } 

  int size = childBeen.get(i).size();
  for(int x=0;x<size;x++) {
   boolean childCb1 = childBeen.get(i).get(x).isChildCb();
   if(!childCb1){
   groupBeen.get(i).setGropuCb(false);
   break;
   }else{
   groupBeen.get(i).setGropuCb(true);
   }
  }
  notifyDataSetChanged();
  main.changesum(childBeen);
  }
 }); 

 return v;
 } 

 @Override
 public boolean isChildSelectable(int i, int i1) {
 return false;
 }
}

7.购物车页面逻辑 Main2Activity

package com.bwei.gepeng.view; 

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.CheckBox;
import android.widget.ExpandableListView;
import android.widget.TextView; 

import com.bwei.gepeng.R;
import com.bwei.gepeng.adapter.ExpandableAdapter;
import com.bwei.gepeng.entity.CartBean;
import com.bwei.gepeng.entity.ChildBean;
import com.bwei.gepeng.entity.GroupBean;
import com.bwei.gepeng.presenter.NewsPresenter; 

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map; 

import butterknife.BindView;
import butterknife.ButterKnife;
import butterknife.OnClick; 

public class Main2Activity extends AppCompatActivity implements IView { 

 @BindView(R.id.exListView)
 ExpandableListView exListView;
 @BindView(R.id.all_chekbox)
 public CheckBox allCheckbox;
 @BindView(R.id.total_price)
 TextView totalPrice;
 @BindView(R.id.total_number)
 TextView totalnumber;
 @BindView(R.id.tv_go_to_pay)
 TextView tvGoToPay;
 @BindView(R.id.tv_go_to_del)
 TextView tvGoToDel; 

 private ExpandableAdapter expandableAdapter; 

 private boolean flagedit = true;
 private boolean flagdel = false; 

 private NewsPresenter presenter; 

 List<GroupBean> groupBeen = new ArrayList<>();
 List<List<ChildBean>> childBeen = new ArrayList<>(); 

 int i;
 int i1; 

 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main2);
 ButterKnife.bind(this); 

 //获取二级列表适配器
 expandableAdapter = new ExpandableAdapter(Main2Activity.this, groupBeen, childBeen);
 exListView.setAdapter(expandableAdapter); 

 exListView.setOnGroupClickListener(new ExpandableListView.OnGroupClickListener() {
  @Override
  public boolean onGroupClick(ExpandableListView expandableListView, View view, int i, long l) {
  return true;
  }
 }); 

 presenter = new NewsPresenter();
 presenter.attachView(this);
 //http://120.27.23.105/product/getCarts?uid=3802&source=android
 Map<String, String> map = new HashMap<>();
 map.put("uid", "3802");
 presenter.getData(map, "cart"); 

 expandableAdapter.setOnDeleteGoods(new ExpandableAdapter.onDeleteGoods() {
  @Override
  public void onDelGoods(int i, int i1, String pid) {
  Main2Activity.this.i = i;
  Main2Activity.this.i1 = i1; 

  Map<String, String> map = new HashMap<>();
  map.put("uid", "3802");
  map.put("pid", pid);
  presenter.getData(map, "del"); 

  }
 }); 

 } 

 @Override
 public void OnSuccess(Object o, String tag) {
 if (tag.equals("cart")) {
  if (o != null) {
  List<CartBean> data = (List<CartBean>) o;
  for (CartBean i : data) {
   GroupBean groupBean = new GroupBean(i.getSellerName(), false);
   this.groupBeen.add(groupBean);
   List<CartBean.ListBean> list = i.getList();
   List<ChildBean> ls = new ArrayList<>();
   for (CartBean.ListBean w : list) {
   String[] split = w.getImages().split("\\|");
   ChildBean childBean = new ChildBean(w.getTitle(), split[0], w.getPrice(), 1, false, false, w.getPid());
   ls.add(childBean);
   }
   this.childBeen.add(ls); 

  }
  for (int i = 0; i < expandableAdapter.getGroupCount(); i++) {
   exListView.expandGroup(i);
  }
  }
 } else if (tag.equals("del")) {
  if (o != null) {
  String msg = (String) o; 

  if (this.i != -1 && this.i1 != -1) {
   int size = childBeen.get(i).size();
   if (size == 1) {
   childBeen.remove(i);
   groupBeen.remove(i);
   } else {
   childBeen.get(i).remove(i1);
   } 

   changesum(childBeen); 

   this.i = -1;
   this.i1 = -1;
   if(flagdel){
   delGoods();
   }
  }
  }
 }
 expandableAdapter.notifyDataSetChanged();
 } 

 @Override
 public void OnFailed(Exception e, String tag) { 

 } 

 @OnClick({R.id.back, R.id.edit, R.id.all_chekbox,R.id.tv_go_to_del})
 public void onViewClicked(View view) {
 switch (view.getId()) {
  case R.id.back:
  finish();
  break;
  case R.id.edit:
  if(flagedit){
   tvGoToPay.setVisibility(View.GONE);
   tvGoToDel.setVisibility(View.VISIBLE);
  }else{
   tvGoToPay.setVisibility(View.VISIBLE);
   tvGoToDel.setVisibility(View.GONE);
  } 

  for (List<ChildBean> i1 : childBeen) {
   for (int r = 0; r < i1.size(); r++) {
   i1.get(r).setBtn(flagedit);
   }
  }
  flagedit = !flagedit;
  expandableAdapter.notifyDataSetChanged();
  break;
  case R.id.all_chekbox:
  boolean checked = allCheckbox.isChecked();
  //改变一级item复选框
  for (GroupBean i : groupBeen) {
   i.setGropuCb(checked);
  }
  //改变二级item复选框
  for (List<ChildBean> i1 : childBeen) {
   for (int r = 0; r < i1.size(); r++) {
   i1.get(r).setChildCb(checked);
   }
  }
  expandableAdapter.notifyDataSetChanged();
  changesum(childBeen);
  break;
  case R.id.tv_go_to_del:
  if(childBeen.size()!=0){
   for (List<ChildBean> i1 : childBeen) {
   for (int r = 0; r < i1.size(); r++) {
    boolean childCb1 = i1.get(r).isChildCb();
    if (childCb1) {
    flagdel=true;
    delGoods();
    if(allCheckbox.isChecked()){
     allCheckbox.setChecked(false);
    }
    break;
    }
   }
   if(flagdel){
    break;
   }
   }
  }
  //Toast.makeText(Main2Activity.this,flagdel+"",Toast.LENGTH_SHORT).show();
  break;
 }
 } 

 //递归删除
 private void delGoods(){
 Boolean flag=false;
 for(int p=0;p<childBeen.size();p++) {
  for (int r = 0; r < childBeen.get(p).size(); r++) {
  boolean childCb1 = childBeen.get(p).get(r).isChildCb();
  if(p==childBeen.size()-1&&r==childBeen.get(p).size()-1){
   flagdel=false;
  }
  if (childCb1) {
   int pid = childBeen.get(p).get(r).getPid();
   this.i = p;
   this.i1 = r;
   Map<String, String> map = new HashMap<>();
   map.put("uid", "3802");
   map.put("pid", pid+"");
   presenter.getData(map, "del");
   flag=!flag;
   break;
  }
  }
  if(flag){
  break;
  }
 }
 } 

 //计算和数量总价
 public void changesum(List<List<ChildBean>> childBeen) {
 int count = 0;
 double sum = 0;
 for (List<ChildBean> i1 : childBeen) {
  for (int r = 0; r < i1.size(); r++) {
  boolean childCb1 = i1.get(r).isChildCb();
  if (childCb1) {
   double price = i1.get(r).getPrice();
   int num = i1.get(r).getNum();
   sum += price * num;
   count++;
  }
  }
 }
 totalPrice.setText("￥" + sum);
 totalnumber.setText("共有商品:" + count + "件");
 }
}

6.附

shape图 edit

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
 <solid android:color="#FFFFFF" />
 <!--<corners android:radius="3dip"/>-->
 <stroke
 android:width="1dip"
 android:color="#BDC7D8" />
</shape> 

Application 初始化Fresco

import android.app.Application;
import com.facebook.drawee.backends.pipeline.Fresco; 

public class App extends Application{
 @Override
 public void onCreate() {
 super.onCreate();
 Fresco.initialize(this);
 }
} 

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