详情页跳转购物车

 依赖
  
    compile 'com.squareup.okhttp3:okhttp:3.9.0'
    compile 'com.google.code.gson:gson:2.8.2'
    compile 'com.github.bumptech.glide:glide:3.3.1'

权限

 <uses-permission android:name="android.permission.INTERNET" />

main详情页的布局

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.example.carlication.MainActivity"
    >
    <TextView
        android:layout_width="match_parent"
        android:layout_height="40dp"
        android:background="#ff3660"
        android:gravity="center"
        android:text="商品详情"
        android:textColor="#ffffff"
        android:textSize="25sp" />

    <ImageView
        android:id="@+id/iv"
        android:layout_width="match_parent"
        android:layout_height="400dp" />
    <TextView
        android:id="@+id/tvTitle"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="10dp"
        android:layout_marginTop="10dp" />

    <TextView
        android:id="@+id/tvBargainPrice"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="10dp"
        android:layout_marginTop="10dp" />

    <TextView
        android:textColor="#F00"
        android:id="@+id/tvPrice"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <View
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="1"></View>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="40dp">

        <TextView
            android:id="@+id/tvCart"
            android:layout_width="0dp"
            android:background="#33000000"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:gravity="center"
            android:text="购物车" />
        <TextView
            android:layout_width="1dp"
            android:layout_height="match_parent"
            android:background="#000"/>

        <TextView
            android:id="@+id/tvAddCart"
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:background="#33000000"
            android:gravity="center"
            android:text="加入购物车" />
    </LinearLayout>
</LinearLayout >

MainActivity

package com.example.carlication;

import android.content.Intent;
import android.graphics.Paint;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

import com.bumptech.glide.Glide;
import com.example.carlication.Bean.MoreBean;
import com.example.carlication.Call.IAddCartView;
import com.example.carlication.Call.INewsView;
import com.example.carlication.Persenter.AddCartPersenter;
import com.example.carlication.Persenter.NewsPersenter;

public class MainActivity extends AppCompatActivity implements View.OnClickListener, INewsView, IAddCartView {
    private ImageView mIv;
    private TextView mTvBargainPrice;
    private TextView mTvPrice;
    /**
     * 购物车
     */
    private TextView mTvCart;
    /**
     * 加入购物车
     */
    private TextView mTvAddCart;
    private AddCartPersenter addCartPersenter;
    private TextView mTvTitle;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initView();
        NewsPersenter presenter = new NewsPersenter(this);
        presenter.getNews();
        addCartPersenter = new AddCartPersenter(this);
    }
    private void initView() {
        mIv = (ImageView) findViewById(R.id.iv);
        mTvBargainPrice = (TextView) findViewById(R.id.tvBargainPrice);
        mTvPrice = (TextView) findViewById(R.id.tvPrice);
        mTvCart = (TextView) findViewById(R.id.tvCart);
        mTvCart.setOnClickListener(this);
        mTvAddCart = (TextView) findViewById(R.id.tvAddCart);
        mTvAddCart.setOnClickListener(this);
        mTvTitle = (TextView) findViewById(R.id.tvTitle);
    }


    @Override
    public void onClick(View view) {
        switch (view.getId()) {
            default:
                break;
            case R.id.tvCart:
                Intent intent = new Intent(MainActivity.this, SecondActivity.class);
                startActivity(intent);
                break;
            case R.id.tvAddCart:
                addCartPersenter.getNews();
                break;
        }
    }

    @Override
    public void show(String code) {
        if (code.equals("0")) {
            Toast.makeText(MainActivity.this, "添加成功", Toast.LENGTH_LONG).show();
            ;
        } else {
            Toast.makeText(MainActivity.this, "添加失败", Toast.LENGTH_LONG).show();
            ;
        }
    }

    @Override
    public void failed(Exception e) {

    }

    @Override
    public void success(MoreBean.DataBean data) {
        String img = data.getImages();
        if (img.contains("|")) {
            img = img.substring(0, img.indexOf("|"));
        }
        Log.i("imggg", img);
        Glide.with(this).load(img).into(mIv);
        mTvTitle.setText(data.getTitle());
        mTvBargainPrice.setText("折扣价:" + data.getSalenum());
        mTvPrice.setText("原价:" + data.getPrice());
        mTvPrice.getPaint().setFlags(Paint.STRIKE_THRU_TEXT_FLAG);
    }
}

PriceAndCount

package com.example.carlication;

/**
 * Created by lenovo on 2017/12/15.
 */

public class PriceAndCount {

    private double price;
    private int count;

    public PriceAndCount(double price, int count) {
        this.price = price;
        this.count = count;
    }

    public double getPrice() {
        return price;
    }

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

    public int getCount() {
        return count;
    }

    public void setCount(int count) {
        this.count = count;
    }

}

AddCartPersenter

package com.example.carlication.Persenter;

import com.example.carlication.Bean.AddCartBean;
import com.example.carlication.Call.CallBack;
import com.example.carlication.Call.IAddCartView;
import com.example.carlication.Http.HttpsUrl;

import java.util.HashMap;

/**
 * Created by lenovo on 2017/12/15.
 */

public class AddCartPersenter {
    private IAddCartView iav;

    public AddCartPersenter(IAddCartView iav) {
        this.iav = iav;
    }
    public void getNews(){
        HashMap<String , String> map = new HashMap<>();
        map.put("source","android");
        map.put("uid","39");
        map.put("pid","71");
        HttpsUrl.getInstance().get("https://www.zhaoapi.cn/product/addCart", map, new CallBack() {
            @Override
            public void onResponse(Object o) {
                AddCartBean addCartBean = (AddCartBean) o;
                if(addCartBean!=null){
                    String code = addCartBean.getCode();
                    iav.show(code);
                }
            }

            @Override
            public void onFailure(Exception e) {

            }

        },AddCartBean.class);
    }



}

AddCartBean

package com.example.carlication.Bean;

/**
 * Created by lenovo on 2017/12/15.
 */

public class AddCartBean {
    /**
     * msg : 加购成功
     * code : 0
     */

    private String msg;
    private String code;

    public String getMsg() {
        return msg;
    }

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

    public String getCode() {
        return code;
    }

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

HttpsUrl

package com.example.carlication.Http;

import android.os.Handler;
import android.text.TextUtils;
import android.util.Log;

import com.example.carlication.Call.CallBack;
import com.google.gson.Gson;

import java.io.IOException;
import java.util.Map;

import okhttp3.Call;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;

/**
 * Created by lenovo on 2017/12/15.
 */

public class HttpsUrl {
    private Handler handler = new Handler();
    private static volatile HttpsUrl instance;
    public HttpsUrl(){

    }
    public static HttpsUrl getInstance(){
        if(null == instance){
            synchronized (HttpsUrl.class){
                if(instance==null){
                    instance = new HttpsUrl();
                }
            }
        }
        return instance;
    }
    public void get(String url, Map<String , String> map, final CallBack callback, final Class cls){
        if(TextUtils.isEmpty(url)){
            return;
        }
        StringBuffer sb = new StringBuffer();
        sb.append(url);
        if(url.contains("?")){
            if (url.indexOf("?")==url.length()-1) {

            }else{
                sb.append("&");
            }
        }else{
            sb.append("?");
        }
        for(Map.Entry<String ,String > entry:map.entrySet()){
            sb.append(entry.getKey())
                    .append("=")
                    .append(entry.getValue())
                    .append("&");
        }
        if(sb.indexOf("&") != -1){
            sb.deleteCharAt(sb.lastIndexOf("&"));
        }
        OkHttpClient client = new OkHttpClient();
        final Request request = new Request.Builder()
                .get()
                .url(sb.toString())
                .build();
        Call call = client.newCall(request);
        call.enqueue(new okhttp3.Callback() {
            @Override
            public void onFailure(Call call, final IOException e) {
                handler.post(new Runnable() {
                    @Override
                    public void run() {
                        callback.onFailure(e);
                    }
                });
            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {
                final String s = response.body().string();
                Log.i("ddd",s);
                handler.post(new Runnable() {
                    private Object o;
                    @Override
                    public void run() {
                        if(TextUtils.isEmpty(s)){
                            o = null;
                        }else{
                            Gson gson = new Gson();
                            o = gson.fromJson(s,cls);
                        }
                        callback.onResponse(o);
                    }
                });
            }
        });
    }


}

CallBack

package com.example.carlication.Call;

/**

package com.example.carlication.Call;

/**
 * Created by lenovo on 2017/12/15.
 */

public interface IAddCartView {

    void show(String code);
}

IAddCartView

package com.example.carlication.Call;

/**
 * Created by lenovo on 2017/12/15.
 */

public interface IAddCartView {

    void show(String code);
}

ICartView

package com.example.carlication.Call;

import com.example.carlication.Bean.GetCartBean;

import java.util.List;

/**
 * Created by lenovo on 2017/12/15.
 */

public interface ICartView {
    void show(List<GetCartBean.DataBean> group, List<List<GetCartBean.DataBean.ListBean>> child);
}

INewsView

package com.example.carlication.Call;

import com.example.carlication.Bean.MoreBean;

/**
 * Created by lenovo on 2017/12/15.
 */

public interface INewsView {
    void failed(Exception e);
    void success(MoreBean.DataBean data);

}

NewsPersenter

package com.example.carlication.Persenter;

import android.util.Log;

import com.example.carlication.Bean.MoreBean;
import com.example.carlication.Call.CallBack;
import com.example.carlication.Call.INewsView;
import com.example.carlication.Http.HttpsUrl;

import java.util.HashMap;

/**
 * Created by lenovo on 2017/12/15.
 */

public class NewsPersenter {
    private INewsView inv;

    public NewsPersenter(INewsView inv) {
        this.inv = inv;
    }
    public void getNews(){
        HashMap<String , String> map = new HashMap<>();
        map.put("source","android");
        map.put("pid","71");
        HttpsUrl.getInstance().get("https://www.zhaoapi.cn/product/getProductDetail", map, new CallBack() {
            @Override
            public void onResponse(Object o) {
                MoreBean json = (MoreBean) o;
                if(json!=null){
                    MoreBean.DataBean data = json.getData();
                    Log.i("jjj",data.toString());
                    inv.success(data);
                }
            }

            @Override
            public void onFailure(Exception e) {
                inv.failed(e);
            }
        },MoreBean.class);
    }
    public void detachView(){
        if (inv != null) {
            inv = null;
        }
    }
}

GetCartPersenter

package com.example.carlication.Persenter;

import com.example.carlication.Bean.GetCartBean;
import com.example.carlication.Call.CallBack;
import com.example.carlication.Call.ICartView;
import com.example.carlication.Http.HttpsUrl;

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

/**
 * Created by lenovo on 2017/12/15.
 */

public class GetCartPersenter {
    private ICartView icv;

    public GetCartPersenter(ICartView icv) {
        this.icv = icv;
    }
    public void getNews(){
        HashMap<String , String> map = new HashMap<>();
        map.put("source","android");
        map.put("uid","101");
        map.put("pid","71");
        HttpsUrl.getInstance().get("http://120.27.23.105/product/getCarts", map, new CallBack() {
            @Override
            public void onResponse(Object o) {
                GetCartBean cartBean = (GetCartBean) o;
                if(cartBean!=null){
                    List<GetCartBean.DataBean> group = cartBean.getData();
                    List<List<GetCartBean.DataBean.ListBean>> child = new ArrayList<>();

                    for (int i = 0; i < group.size(); i++){
                        child.add(group.get(i).getList());
                    }
                    icv.show(group,child);
                }
            }

            @Override
            public void onFailure(Exception e) {

            }

        },GetCartBean.class);
    }


}

GetCartBean

package com.example.carlication.Bean;

import java.util.List;

/**
 * Created by lenovo on 2017/12/15.
 */

public class GetCartBean {
    /**
     * msg : 请求成功
     * code : 0
     * data : [{"list":[{"bargainPrice":3455,"createtime":"2017-10-14T21:48:08","detailUrl":"https://item.m.jd.com/product/12224420750.html?utm_source=androidapp&utm_medium=appshare&utm_campaign=t_335139774&utm_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t9106/106/1785172479/537280/253bc0ab/59bf78a7N057e5ff7.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t9106/106/1785172479/537280/253bc0ab/59bf78a7N057e5ff7.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t8461/5/1492479653/68388/7255e013/59ba5e84N91091843.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t8461/5/1492479653/68388/7255e013/59ba5e84N91091843.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t8803/356/1478945529/489755/2a163ace/59ba5e84N7bb9a666.jpg!q70.jpg","num":1,"pid":50,"price":444,"pscid":39,"selected":0,"sellerid":6,"subhead":"【现货新品抢购】全面屏2.0震撼来袭，骁龙835处理器，四曲面陶瓷机","title":"小米（MI） 小米MIX2 手机 黑色 全网通 (6GB+64GB)【标配版】"}],"sellerName":"商家6","sellerid":"6"}]
     */

    private String msg;
    private String code;
    /**
     * list : [{"bargainPrice":3455,"createtime":"2017-10-14T21:48:08","detailUrl":"https://item.m.jd.com/product/12224420750.html?utm_source=androidapp&utm_medium=appshare&utm_campaign=t_335139774&utm_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t9106/106/1785172479/537280/253bc0ab/59bf78a7N057e5ff7.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t9106/106/1785172479/537280/253bc0ab/59bf78a7N057e5ff7.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t8461/5/1492479653/68388/7255e013/59ba5e84N91091843.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t8461/5/1492479653/68388/7255e013/59ba5e84N91091843.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t8803/356/1478945529/489755/2a163ace/59ba5e84N7bb9a666.jpg!q70.jpg","num":1,"pid":50,"price":444,"pscid":39,"selected":0,"sellerid":6,"subhead":"【现货新品抢购】全面屏2.0震撼来袭，骁龙835处理器，四曲面陶瓷机","title":"小米（MI） 小米MIX2 手机 黑色 全网通 (6GB+64GB)【标配版】"}]
     * sellerName : 商家6
     * sellerid : 6
     */

    private List<DataBean> data;

    public String getMsg() {
        return msg;
    }

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

    public String getCode() {
        return code;
    }

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

    public List<DataBean> getData() {
        return data;
    }

    public void setData(List<DataBean> data) {
        this.data = data;
    }

    public static class DataBean {
        private boolean checked;//自己添加的

        public boolean isChecked() {
            return checked;
        }

        public void setChecked(boolean checked) {
            this.checked = checked;
        }

        private String sellerName;
        private String sellerid;
        /**
         * bargainPrice : 3455.0
         * createtime : 2017-10-14T21:48:08
         * detailUrl : https://item.m.jd.com/product/12224420750.html?utm_source=androidapp&utm_medium=appshare&utm_campaign=t_335139774&utm_term=QQfriends
         * images : https://m.360buyimg.com/n0/jfs/t9106/106/1785172479/537280/253bc0ab/59bf78a7N057e5ff7.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t9106/106/1785172479/537280/253bc0ab/59bf78a7N057e5ff7.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t8461/5/1492479653/68388/7255e013/59ba5e84N91091843.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t8461/5/1492479653/68388/7255e013/59ba5e84N91091843.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t8803/356/1478945529/489755/2a163ace/59ba5e84N7bb9a666.jpg!q70.jpg
         * num : 1
         * pid : 50
         * price : 444.0
         * pscid : 39
         * selected : 0
         * sellerid : 6
         * subhead : 【现货新品抢购】全面屏2.0震撼来袭，骁龙835处理器，四曲面陶瓷机
         * title : 小米（MI） 小米MIX2 手机 黑色 全网通 (6GB+64GB)【标配版】
         */

        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 boolean checked;//自己添加的
            private int count = 1;//自己添加的

            public boolean isChecked() {
                return checked;
            }

            public void setChecked(boolean checked) {
                this.checked = checked;
            }

            public int getCount() {
                return count;
            }

            public void setCount(int count) {
                this.count = count;
            }

            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;
            }
        }
    }

}

DataBean

package com.example.carlication.Bean;

/**
 * Created by lenovo on 2017/12/15.
 */

public class MoreBean {

    /**
     * msg :
     * seller : {"description":"我是商家4","icon":"http://120.27.23.105/images/icon.png","name":"商家4","productNums":999,"score":5,"sellerid":4}
     * code : 0
     * data : {"bargainPrice":111.99,"createtime":"2017-10-14T21:48:08","detailUrl":"https://item.m.jd.com/product/4719303.html?utm_source=androidapp&utm_medium=appshare&utm_campaign=t_335139774&utm_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t9004/210/1160833155/647627/ad6be059/59b4f4e1N9a2b1532.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t7504/338/63721388/491286/f5957f53/598e95f1N7f2adb87.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t7441/10/64242474/419246/adb30a7d/598e95fbNd989ba0a.jpg!q70.jpg","itemtype":2,"pid":11,"price":8989,"pscid":1,"salenum":0,"sellerid":4,"subhead":"每个中秋都不能简单，无论身在何处，你总需要一块饼让生活更圆满，京东月饼让爱更圆满京东自营，闪电配送，更多惊喜，快用手指戳一下","title":"北京稻香村 稻香村中秋节月饼 老北京月饼礼盒655g"}
     */

    private String msg;
    /**
     * description : 我是商家4
     * icon : http://120.27.23.105/images/icon.png
     * name : 商家4
     * productNums : 999
     * score : 5.0
     * sellerid : 4
     */

    private SellerBean seller;
    private String code;
    /**
     * bargainPrice : 111.99
     * createtime : 2017-10-14T21:48:08
     * detailUrl : https://item.m.jd.com/product/4719303.html?utm_source=androidapp&utm_medium=appshare&utm_campaign=t_335139774&utm_term=QQfriends
     * images : https://m.360buyimg.com/n0/jfs/t9004/210/1160833155/647627/ad6be059/59b4f4e1N9a2b1532.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t7504/338/63721388/491286/f5957f53/598e95f1N7f2adb87.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t7441/10/64242474/419246/adb30a7d/598e95fbNd989ba0a.jpg!q70.jpg
     * itemtype : 2
     * pid : 11
     * price : 8989.0
     * pscid : 1
     * salenum : 0
     * sellerid : 4
     * subhead : 每个中秋都不能简单，无论身在何处，你总需要一块饼让生活更圆满，京东月饼让爱更圆满京东自营，闪电配送，更多惊喜，快用手指戳一下
     * title : 北京稻香村 稻香村中秋节月饼 老北京月饼礼盒655g
     */

    private DataBean 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 String getCode() {
        return code;
    }

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

    public DataBean getData() {
        return data;
    }

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

    public static class SellerBean {
        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;
        }
    }

    public static class DataBean {
        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;
        }
    }

}

购物车的main布局

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout  xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.example.carlication.SecondActivity">
    <ExpandableListView
        android:id="@+id/elv"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="1" />

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="40dp">

        <CheckBox
            android:id="@+id/cb"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerVertical="true"
            android:text="全选" />

        <TextView
            android:id="@+id/tvTotal"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerVertical="true"
            android:layout_marginLeft="15dp"
            android:layout_toRightOf="@id/cb"
            android:text="合计:" />

        <TextView
            android:id="@+id/tvCount"
            android:layout_width="100dp"
            android:layout_height="match_parent"
            android:layout_alignParentRight="true"
            android:layout_centerVertical="true"
            android:background="#ff0000"
            android:gravity="center"
            android:text="去结算(0)"
            android:textColor="#ffffff" />
    </RelativeLayout>
</LinearLayout >

SecondActivity

package com.example.carlication;

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

import com.example.carlication.Adapter.ElvAdapter;
import com.example.carlication.Bean.GetCartBean;
import com.example.carlication.Call.ICartView;
import com.example.carlication.Persenter.GetCartPersenter;

import java.util.List;

public class SecondActivity extends AppCompatActivity implements ICartView {
    private ExpandableListView mElv;
    /**
     * 全选
     */
    private CheckBox mCb;
    /**
     * 合计:
     */
    private TextView mTvTotal;
    /**
     * 去结算(0)
     */
    private TextView mTvCount;
    private GetCartPersenter presenter;
    private ElvAdapter elvAdapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_second);
        initView();
        presenter = new GetCartPersenter(this);
        presenter.getNews();
        mCb.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                elvAdapter.AllOrNone(mCb.isChecked());
            }
        });
    }
    private void initView() {
        mElv = (ExpandableListView) findViewById(R.id.elv);
        mCb = (CheckBox) findViewById(R.id.cb);
        mTvTotal = (TextView) findViewById(R.id.tvTotal);
        mTvCount = (TextView) findViewById(R.id.tvCount);
    }

    @Override
    public void show(List<GetCartBean.DataBean> group, List<List<GetCartBean.DataBean.ListBean>> child) {
        elvAdapter = new ElvAdapter(this,group,child);
        mElv.setGroupIndicator(null);
        mElv.setAdapter(elvAdapter);
        for (int i = 0; i < group.size(); i++) {
            mElv.expandGroup(i);
        }
    }
    public void setPriceAndCount(PriceAndCount priceAndCount) {
        mTvTotal.setText("合计：" + priceAndCount.getPrice());
        mTvCount.setText("去结算(" + priceAndCount.getCount() + ")");
    }

    public void setAllChecked(boolean bool) {
        mCb.setChecked(bool);
    }
}

ElvAdapter

package com.example.carlication.Adapter;

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

import com.bumptech.glide.Glide;
import com.example.carlication.Bean.GetCartBean;
import com.example.carlication.PriceAndCount;
import com.example.carlication.R;
import com.example.carlication.SecondActivity;

import java.util.List;

/**
 * Created by lenovo on 2017/12/15.
 */

public class ElvAdapter extends BaseExpandableListAdapter {

    private final LayoutInflater inflater;
    private Context context;
    private List<GetCartBean.DataBean> group;
    private List<List<GetCartBean.DataBean.ListBean>> child;


    public ElvAdapter(Context context, List<GetCartBean.DataBean> group, List<List<GetCartBean.DataBean.ListBean>> child) {
        this.context=context;
        this.group=group;
        this.child=child;
        inflater = LayoutInflater.from(context);
    }

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

    @Override
    public int getChildrenCount(int groupPosition) {
        return child.get(groupPosition).size();
    }

    @Override
    public Object getGroup(int groupPosition) {
        return group.get(groupPosition);
    }

    @Override
    public Object getChild(int groupPosition, int childPosition) {
        return child.get(groupPosition).get(childPosition);
    }

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

    @Override
    public long getChildId(int groupPosition, int childPosition) {
        return childPosition;
    }

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



    @Override
    public View getGroupView(final int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) {
        View view;
        final GroupViewHolder holder;
        if (convertView == null) {
            view = inflater.inflate(R.layout.elv_group, null);
            holder = new GroupViewHolder();
            holder.tv = view.findViewById(R.id.tvGroup);
            holder.cbGroup = view.findViewById(R.id.cbGroup);
            view.setTag(holder);
        } else {
            view = convertView;
            holder = (GroupViewHolder) view.getTag();
        }
        final GetCartBean.DataBean dataBean = group.get(groupPosition);
        holder.tv.setText(dataBean.getSellerName());
        holder.cbGroup.setChecked(dataBean.isChecked());

        holder.cbGroup.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //需要改变三个checkbox的状态值
                //1.一级列表的checkbox状态值
                dataBean.setChecked(holder.cbGroup.isChecked());
                //2.二级列表的checkbox状态值
                setChildrenCb(groupPosition, holder.cbGroup.isChecked());
                //3.全选的checkbox状态值
                ((SecondActivity) context).setAllChecked(isAllGroupCbChecked());
                //计算钱和数量并显示
                setPriceAndCount();
                //刷新界面
                notifyDataSetChanged();
            }
        });
        return view;
    }

    @Override
    public View getChildView(final int groupPosition, final int childPosition, boolean isLastChild, final View convertView, ViewGroup parent) {
        View view;
        final ChildViewHolder holder;
        if (convertView == null) {
            view = inflater.inflate(R.layout.elv_child, null);
            holder = new ChildViewHolder();
            holder.iv = view.findViewById(R.id.iv);
            holder.tvTitle = view.findViewById(R.id.tvTitle);
            holder.tvSubhead = view.findViewById(R.id.tvSubhead);
            holder.tvPrice = view.findViewById(R.id.tvPrice);
            holder.cbChild = view.findViewById(R.id.cbChild);
            holder.btDel = view.findViewById(R.id.btDel);
            holder.tvNum = view.findViewById(R.id.tvNum);
            holder.ivDel = view.findViewById(R.id.ivDel);
            holder.ivAdd = view.findViewById(R.id.ivAdd);
            view.setTag(holder);
        } else {
            view = convertView;
            holder = (ChildViewHolder) view.getTag();
        }

        final GetCartBean.DataBean.ListBean listBean = child.get(groupPosition).get(childPosition);
        String images = listBean.getImages();
        Glide.with(context).load(images.split("\\|")[0]).into(holder.iv);
        holder.tvTitle.setText(listBean.getTitle());
        holder.cbChild.setChecked(child.get(groupPosition).get(childPosition).isChecked());
        holder.tvSubhead.setText(listBean.getSubhead());
        holder.tvPrice.setText(listBean.getPrice() + "元");
        holder.tvNum.setText(listBean.getCount() + "");
        //给checkbox设置点击事件
        holder.cbChild.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //需要改变三个checkbox的状态值
                //1.二级列表的checkbox状态值
                listBean.setChecked(holder.cbChild.isChecked());
                //2.一级列表的checkbox状态值
                group.get(groupPosition).setChecked(isAllChildCbChecked(groupPosition));
                //3.全选的checkbox状态值
                ((SecondActivity) context).setAllChecked(isAllGroupCbChecked());
                //计算钱和数量并显示
                setPriceAndCount();
                //刷新界面
                notifyDataSetChanged();
            }
        });

        holder.ivAdd.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //获取目前显示的值
                int count = listBean.getCount();
                count++;
                //改变JavaBean里的状态值
                listBean.setCount(count);
                //计算钱和数量并显示
                setPriceAndCount();
                //刷新列表
                notifyDataSetChanged();
            }
        });
        holder.ivDel.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //获取目前显示的值
                int count = listBean.getCount();
                if (count <= 1) {
                    count = 1;
                } else {
                    count--;
                }
                //改变JavaBean里的状态值
                listBean.setCount(count);
                //计算钱和数量并显示
                setPriceAndCount();
                //刷新列表
                notifyDataSetChanged();
            }
        });

        holder.btDel.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //其实就是删除集合
                List<GetCartBean.DataBean.ListBean> listBeans = child.get(groupPosition);
                if (listBeans.size() > 0) {
                    listBeans.remove(childPosition);
                }
                if (listBeans.size() == 0) {
                    child.remove(groupPosition);
                    group.remove(groupPosition);
                }
                //计算钱和数量并显示
                setPriceAndCount();
                //改变全选状态
                ((SecondActivity) context).setAllChecked(isAllGroupCbChecked());
                //刷新列表
                notifyDataSetChanged();
            }
        });
        return view;
    }

    @Override
    public boolean isChildSelectable(int groupPosition, int childPosition) {
        return false;
    }

    class GroupViewHolder {
        TextView tv;
        CheckBox cbGroup;
    }

    class ChildViewHolder {
        ImageView iv;
        TextView tvTitle;
        TextView tvSubhead;
        TextView tvPrice;
        CheckBox cbChild;
        Button btDel;
        TextView tvNum;
        ImageView ivDel;
        ImageView ivAdd;
    }

    /**
     * 设置一级列表对应的二级列表checkbox状态
     *
     * @param groupPosition
     * @param bool
     */
    private void setChildrenCb(int groupPosition, boolean bool) {
        List<GetCartBean.DataBean.ListBean> listBeans = child.get(groupPosition);
        for (int i = 0; i < listBeans.size(); i++) {
            listBeans.get(i).setChecked(bool);
        }
    }

    /**
     * 判断一级列表checkbox状态
     *
     * @return
     */
    private boolean isAllGroupCbChecked() {
        if (group.size() == 0) {
            return false;
        }
        for (int i = 0; i < group.size(); i++) {
            if (!group.get(i).isChecked()) {
                return false;
            }
        }
        return true;
    }

    /**
     * 判断二级列表checkbox状态
     *
     * @return
     */
    private boolean isAllChildCbChecked(int groupPosition) {
        List<GetCartBean.DataBean.ListBean> listBeans = child.get(groupPosition);
        for (int i = 0; i < listBeans.size(); i++) {
            if (!listBeans.get(i).isChecked()) {
                return false;
            }
        }
        return true;
    }

    /**
     * 设置钱和数量
     */
    private void setPriceAndCount() {
        ((SecondActivity) context).setPriceAndCount(compute());
    }

    /**
     * 计算钱和数量
     */
    private PriceAndCount compute() {
        double price = 0;
        int count = 0;
        for (int i = 0; i < group.size(); i++) {
            List<GetCartBean.DataBean.ListBean> listBeans = child.get(i);
            for (int j = 0; j < listBeans.size(); j++) {
                if (listBeans.get(j).isChecked()) {
                    price += listBeans.get(j).getPrice() * listBeans.get(j).getCount();
                    count += listBeans.get(j).getCount();
                }
            }
        }
        return new PriceAndCount(price, count);
    }

    /**
     * 全选或者全不选
     *
     * @param bool
     */
    public void AllOrNone(boolean bool) {
        for (int i = 0; i < group.size(); i++) {
            group.get(i).setChecked(bool);
            setChildrenCb(i, bool);
        }
        setPriceAndCount();
        notifyDataSetChanged();
    }

}

elv_group

<?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="wrap_content"
    android:gravity="center_vertical"
    android:orientation="horizontal">
    <CheckBox
        android:id="@+id/cbGroup"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <TextView
        android:id="@+id/tvGroup"
        android:layout_width="match_parent"
        android:layout_height="40dp"
        android:gravity="center_vertical" />

</LinearLayout>

elv_child

<?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="120dp"
    android:gravity="center_vertical"
    android:orientation="horizontal"
    android:paddingLeft="50dp">
    <CheckBox
        android:id="@+id/cbChild"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <ImageView
        android:id="@+id/iv"
        android:layout_width="100dp"
        android:layout_height="100dp" />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:orientation="vertical">

        <TextView
            android:id="@+id/tvTitle"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />

        <TextView
            android:id="@+id/tvSubhead"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />

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

            <TextView
                android:id="@+id/tvPrice"
                android:textColor="#F00"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content" />

            <ImageView
                android:layout_marginLeft="10dp"
                android:id="@+id/ivDel"
                android:layout_width="25dp"
                android:layout_height="25dp"
                android:background="@drawable/iv_del" />

            <TextView
                android:id="@+id/tvNum"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textSize="25sp"
                android:layout_marginLeft="3dp"
                android:layout_marginRight="3dp"
                android:text="1"/>

            <ImageView
                android:id="@+id/ivAdd"
                android:layout_width="25dp"
                android:layout_height="25dp"
                android:background="@drawable/iv_add" />
        </LinearLayout>
    </LinearLayout>

    <Button
        android:id="@+id/btDel"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="删除" />
</LinearLayout>