图片

依赖

    compile 'com.squareup.okhttp3:okhttp:3.9.1'compile 'com.google.code.gson:gson:2.8.+'compile 'com.github.bumptech.glide:glide:3.6.1'

权限

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

布局

layout_title.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:background="#f00"android:layout_height="wrap_content">
<TextView
    android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="返回"android:textSize="25sp"android:padding="10dp"android:textColor="#fff"android:id="@+id/btnBack"/><TextView
        android:layout_width="wrap_content"android:layout_height="wrap_content"android:textSize="25sp"android:textColor="#fff"android:padding="10dp"android:text="购物车"android:layout_weight="1"android:gravity="center"/><TextView
        android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="编辑"android:textSize="25sp"android:padding="10dp"android:textColor="#fff"android:id="@+id/btnEditor"/>
</LinearLayout>

layout_bottom.xml

<?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"><CheckBox
        android:layout_width="wrap_content"android:layout_height="wrap_content"android:id="@+id/btnCheckAll"android:text="全选"android:textSize="25sp"android:padding="10dp"/><TextView
        android:layout_width="wrap_content"android:layout_height="wrap_content"android:id="@+id/tvAllPrice"android:textSize="18sp"android:padding="10dp"android:textColor="#000"android:gravity="center"android:layout_weight="1"android:text="合计:￥0.00"/>
<TextView
    android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="结算（0）"android:textSize="25sp"android:textColor="#fff"android:padding="10dp"android:background="#f00"android:id="@+id/btnAmount"/>
</LinearLayout>

layout_group.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:orientation="vertical"android:layout_height="wrap_content">
<CheckBox
    android:layout_width="match_parent"android:layout_height="wrap_content"android:id="@+id/group_choosed"android:textSize="25sp"android:padding="10dp"android:focusable="false"android:gravity="center_vertical"android:text="商家"/>
</LinearLayout>

layout_child.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="wrap_content"><CheckBox
        android:id="@+id/child_choosed"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_centerVertical="true"android:layout_marginLeft="5dp"android:scaleX="0.6"android:scaleY="0.6" /><ImageView
        android:id="@+id/img"android:layout_width="70dp"android:layout_height="80dp"android:layout_centerVertical="true"android:layout_marginLeft="5dp"android:src="@mipmap/ic_launcher"android:layout_toRightOf="@id/child_choosed" /><LinearLayout
        android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginLeft="10dp"android:layout_marginTop="15dp"android:layout_toRightOf="@id/img"android:orientation="vertical"><TextView
            android:id="@+id/titleName"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="酒红色纯红色纯羊毛西服套装"android:textColor="@android:color/black"android:textSize="12sp"android:textStyle="bold" /><LinearLayout
            android:layout_width="wrap_content"android:layout_height="wrap_content"android:orientation="horizontal"><TextView
                android:id="@+id/littleTitle"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginTop="3dp"android:text="属性:粉蓝色"android:textSize="12sp"android:textColor="@color/colorPrimary" /></LinearLayout><LinearLayout
            android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginTop="4dp"android:orientation="horizontal"><TextView
                android:id="@+id/price"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="￥390"android:textColor="@android:color/holo_red_dark"android:textSize="12sp"android:textStyle="bold" /><TextView
                android:id="@+id/count"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginLeft="20dp"android:text="x1"android:textColor="@android:color/darker_gray" /><LinearLayout
                android:id="@+id/rl_edit"android:layout_width="120dp"android:background="@android:color/holo_orange_light"android:layout_height="30dp"android:layout_marginLeft="20dp"><TextView
                    android:id="@+id/btnSub"android:layout_width="0dp"android:layout_weight="1"android:gravity="center"android:textColor="@android:color/black"android:background="@android:color/white"android:layout_margin="1dp"android:layout_height="match_parent"android:text=" - " /><TextView
                    android:id="@+id/showNum"android:layout_width="0dp"android:layout_weight="1"android:gravity="center"android:background="@android:color/white"android:layout_margin="1dp"android:layout_height="match_parent"android:text="1"/><TextView
                    android:id="@+id/btnAdd"android:layout_width="0dp"android:layout_weight="1"android:gravity="center"android:layout_margin="1dp"android:background="@android:color/white"android:layout_height="match_parent"android:text=" + " /></LinearLayout></LinearLayout></LinearLayout><Button
        android:id="@+id/delete"android:layout_width="50dp"android:layout_height="wrap_content"android:layout_alignParentRight="true"android:layout_centerVertical="true"android:gravity="center"android:background="@drawable/delete"android:textSize="20sp"android:textColor="@android:color/holo_green_dark"android:layout_margin="5dp"android:visibility="gone" /></RelativeLayout>

activity_main.xml

<?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:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent" android:orientation="vertical"tools:context="com.bwie.shopcar.view.activity.MainActivity"><include layout="@layout/layout_title"></include><ExpandableListView
        android:layout_width="match_parent"android:layout_height="match_parent"android:id="@+id/expandList"android:layout_weight="1"></ExpandableListView><include layout="@layout/layout_bottom"></include></LinearLayout>

model包

IShopCarModel

public interface IShopCarModel {void getCarInfo(String uid, IShopCarPresenter iShopCarPresenter);
}

ShopCarModel

public class ShopCarModel implements IShopCarModel {private static Handler handler=new Handler();@Overridepublic void getCarInfo(String uid, final IShopCarPresenter iShopCarPresenter) {Map<String,String> params=new HashMap<>();params.put("uid",uid);OkHttpUtils okHttpUtils=OkHttpUtils.getInstance();okHttpUtils.doGet(Constants.GET_CARTS, params, new OnFinishListener() {@Overridepublic void onFailed(String msg) {iShopCarPresenter.onFailed(msg);}@Overridepublic void onSuccess(Object obj) {//Gson解析Gson gson=new Gson();ShopCarBean shopCarBean = gson.fromJson(obj.toString(), ShopCarBean.class);iShopCarPresenter.onSuccess(shopCarBean.getData());}});}}

presenter包

IShopCarPresenter

public interface IShopCarPresenter {void getCarInfo(String uid);void onSuccess(List<ShopCarBean.DataBean> data);void onFailed(String msg);void onDestory();}

ShopCarPresenter

public class ShopCarPresenter implements IShopCarPresenter {private IMainView iMainView;private final ShopCarModel shopCarModel;public ShopCarPresenter(IMainView iMainView) {this.iMainView = iMainView;shopCarModel = new ShopCarModel();}@Overridepublic void getCarInfo(String uid) {shopCarModel.getCarInfo(uid,this);}@Overridepublic void onSuccess(List<ShopCarBean.DataBean> data) {if(null!=iMainView){iMainView.onSuccess(data);}}@Overridepublic void onFailed(String msg) {if(null!=iMainView){iMainView.onFailed(msg);}}@Overridepublic void onDestory() {if(null!=iMainView){iMainView=null;}}
}

utils包

Constants


public class Constants {//请求的服务器主机名public static final String HOST_NAME="https://www.zhaoapi.cn";/***查询购物车*/public static final String GET_CARTS=HOST_NAME+"/product/getCarts";
}

OnFinishListener


public interface OnFinishListener {void onFailed(String msg);void onSuccess(Object obj);
}

CommonInterceptor拦截器


public class CommonInterceptor implements Interceptor{@Overridepublic Response intercept(Chain chain) throws IOException {//得到原始的请求对象Request request = chain.request();//得到用户所使用的请求方式String method = request.method();if("GET".equals(method)){//原始的请求接口String oldUrl = request.url().toString();//拼接一个新的接口String newUrl = oldUrl + "&source=android";//重新构建请求体request =new Request.Builder().url(newUrl).build();}else if ("POST".equals(method)) {//得到原始的urlString oldUrl = request.url().toString();//得到原有的请求参数FormBody oldBody = (FormBody) request.body();//新的构建项FormBody.Builder builder = new FormBody.Builder();for (int i = 0; i < oldBody.size(); i++) {//取出相关请求参数(原有的)String name = oldBody.name(i);String value = oldBody.value(i);//将原始的参数拼装到新的构建体当中builder.add(name, value);}//拼装我们的公共参数builder.add("source", "android");request=new Request.Builder().url(oldUrl).post(builder.build()).build();}//重新发送请求return chain.proceed(request);}
}

OkHttpUtils

public class OkHttpUtils {private static Handler handler=new Handler();//单例模式private static OkHttpUtils OK_HTTP_UTILS=null;/*** 得到OkHttpUtils实例对象** @return*/
private OkHttpUtils(){}public static OkHttpUtils getInstance(){if(null==OK_HTTP_UTILS){synchronized (OkHttpUtils.class){if(null==OK_HTTP_UTILS){OK_HTTP_UTILS=new OkHttpUtils();}}}return OK_HTTP_UTILS;}/*** Get请求* @param onFinishListener*/public void doGet(String path, Map<String,String> map,final OnFinishListener onFinishListener){StringBuffer sb = new StringBuffer();sb.append(path);//判断path是否包含一个if(sb.indexOf("?")!=-1){//判断"?"是否在最后一个if(sb.indexOf("?")!=sb.length()-1){sb.append("&");}}else{sb.append("?");}//遍历map集合中所有请求参数for(Map.Entry<String, String> entry:map.entrySet()){sb.append(entry.getKey()).append("=").append(entry.getValue()).append("&");}//判断get请求路径最后是否包含一个"&"if(sb.lastIndexOf("&")!=-1){sb.deleteCharAt(sb.length()-1);}OkHttpClient okHttpClient=new OkHttpClient.Builder()//添加应用拦截器.addInterceptor(new CommonInterceptor())//.addNetworkInterceptor() //添加网络拦截器.build();//构建请求项Request request=new Request.Builder().get().url(sb.toString()).build();Call call =okHttpClient.newCall(request);call.enqueue(new Callback() {@Overridepublic void onFailure(Call call, final IOException e) {//请求失败handler.post(new Runnable() {@Overridepublic void run() {onFinishListener.onFailed(e.getMessage());}});}@Overridepublic void onResponse(Call call, final Response response) throws IOException {if(response.isSuccessful()){//得到服务器的响应结果final String result = response.body().string();//请求成功handler.post(new Runnable() {@Overridepublic void run() {//主线程当中执行onFinishListener.onSuccess(result);}});}}});}/*** post请求** @param path* @param map* @param onFinishListener*/public void doPost(String path,Map<String,String> map,final OnFinishListener onFinishListener){OkHttpClient okHttpClient=new OkHttpClient.Builder()//添加应用拦截器 公共参数.addInterceptor(new CommonInterceptor()).build();//构建参数的对象FormBody.Builder builder = new FormBody.Builder();//遍历map集合，获取用户的key/valuefor(String key:map.keySet()){builder.add(key,map.get(key));}//构建请求项Request request=new Request.Builder().post(builder.build()).url(path).build();Call call = okHttpClient.newCall(request);call.enqueue(new Callback() {@Overridepublic void onFailure(Call call, final IOException e) {handler.post(new Runnable() {@Overridepublic void run() {onFinishListener.onFailed(e.getMessage());}});}@Overridepublic void onResponse(Call call, Response response) throws IOException {if(response.isSuccessful()){final String result = response.body().string();handler.post(new Runnable() {@Overridepublic void run() {onFinishListener.onSuccess(result);}});}}});}}

示例bean包

ShopCarBean

注：添加在ShopCarBean里面的字段
  //商家是否被选中 组条目是否被选中private boolean isGroupChoosed;public boolean isGroupChoosed() {return isGroupChoosed;}public void setGroupChoosed(boolean groupChoosed) {isGroupChoosed = groupChoosed;}

 //子条目商品是否被选中的一个字段状态private boolean isChildChoosed;public boolean isChildChoosed() {return isChildChoosed;}public void setChildChoosed(boolean childChoosed) {isChildChoosed = childChoosed;}

public class ShopCarBean {/*** msg : 请求成功* code : 0* data : [{"list":[{"bargainPrice":111.99,"createtime":"2017-10-03T23:53:28","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","num":1,"pid":8,"price":324,"pscid":1,"selected":0,"sellerid":1,"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"}],"sellerName":"商家1","sellerid":"1"},{"list":[{"bargainPrice":22.9,"createtime":"2017-10-03T23:53:28","detailUrl":"https://item.m.jd.com/product/2542855.html?utm_source=androidapp&utm_medium=appshare&utm_campaign=t_335139774&utm_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t1930/284/2865629620/390243/e3ade9c4/56f0a08fNbd3a1235.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t2137/336/2802996626/155915/e5e90d7a/56f0a09cN33e01bd0.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t1882/31/2772215910/389956/c8dbf370/56f0a0a2Na0c86ea6.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t2620/166/2703833710/312660/531aa913/57709035N33857877.jpg!q70.jpg","num":1,"pid":26,"price":88,"pscid":2,"selected":0,"sellerid":3,"subhead":"三只松鼠零食特惠，专区满99减50，满199减100，火速抢购》","title":"三只松鼠 坚果炒货 零食奶油味 碧根果225g/袋"}],"sellerName":"商家3","sellerid":"3"},{"list":[{"bargainPrice":1999,"createtime":"2017-10-10T16:09:02","detailUrl":"https://item.m.jd.com/product/5025971.html?utm#_source=androidapp&utm#_medium=appshare&utm#_campaign=t#_335139774&utm#_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t7210/232/3738666823/232298/9004583e/59c3a9a7N8de42e15.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t8356/82/2107423621/109733/c019b8c6/59c3a9a6Ne9a4bdd7.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t10219/74/25356012/171379/7d55e296/59c3a9a8N82fa6e02.jpg!q70.jpg","num":1,"pid":49,"price":333,"pscid":39,"selected":0,"sellerid":5,"subhead":"vivo X20 带你开启全面屏时代！逆光也清晰，照亮你的美！","title":"vivo X20 全面屏手机 全网通 4GB+64GB 金色 移动联通电信4G手机 双卡双待"}],"sellerName":"商家5","sellerid":"5"},{"list":[{"bargainPrice":11800,"createtime":"2017-10-03T23:53:28","detailUrl":"https://mitem.jd.hk/ware/view.action?wareId=1988853309&cachekey=1acb07a701ece8d2434a6ae7fa6870a1","images":"https://m.360buyimg.com/n0/jfs/t6130/97/1370670410/180682/1109582a/593276b1Nd81fe723.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t5698/110/2617517836/202970/c9388feb/593276b7Nbd94ef1f.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t5698/110/2617517836/202970/c9388feb/593276b7Nbd94ef1f.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t5815/178/2614671118/51656/7f52d137/593276c7N107b725a.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t5878/60/2557817477/30873/4502b606/593276caN5a7d6357.jpg!q70.jpg","num":1,"pid":62,"price":15999,"pscid":40,"selected":0,"sellerid":6,"subhead":"购买电脑办公部分商品满1元返火车票5元优惠券（返完即止）","title":"全球购 新款Apple MacBook Pro 苹果笔记本电脑 银色VP2新13英寸Bar i5/8G/256G"}],"sellerName":"商家6","sellerid":"6"},{"list":[{"bargainPrice":111.99,"createtime":"2017-10-14T21:39:05","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","num":1,"pid":20,"price":599,"pscid":1,"selected":0,"sellerid":13,"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"}],"sellerName":"商家13","sellerid":"13"},{"list":[{"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","num":1,"pid":22,"price":799,"pscid":1,"selected":0,"sellerid":15,"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"}],"sellerName":"商家15","sellerid":"15"},{"list":[{"bargainPrice":111.99,"createtime":"2017-10-14T21:39:05","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","num":1,"pid":1,"price":118,"pscid":1,"selected":0,"sellerid":17,"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"}],"sellerName":"商家17","sellerid":"17"},{"list":[{"bargainPrice":111.99,"createtime":"2017-10-14T21:39:05","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","num":1,"pid":5,"price":88.99,"pscid":1,"selected":0,"sellerid":21,"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"}],"sellerName":"商家21","sellerid":"21"}]*/private String msg;private String code;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 {/*** list : [{"bargainPrice":111.99,"createtime":"2017-10-03T23:53:28","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","num":1,"pid":8,"price":324,"pscid":1,"selected":0,"sellerid":1,"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"}]* sellerName : 商家1* sellerid : 1*/private String sellerName;private String sellerid;private List<ListBean> list;//商家是否被选中 组条目是否被选中private boolean isGroupChoosed;public boolean isGroupChoosed() {return isGroupChoosed;}public void setGroupChoosed(boolean groupChoosed) {isGroupChoosed = groupChoosed;}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 {/*** bargainPrice : 111.99* createtime : 2017-10-03T23:53:28* 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* num : 1* pid : 8* price : 324.0* pscid : 1* selected : 0* sellerid : 1* 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 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;//子条目商品是否被选中的一个字段状态private boolean isChildChoosed;public boolean isChildChoosed() {return isChildChoosed;}public void setChildChoosed(boolean childChoosed) {isChildChoosed = childChoosed;}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;}}}
}

view包下activity包

IMainView

public interface IMainView {void onSuccess(List<ShopCarBean.DataBean> data);void onFailed(String msg);
}

MainActivity


public class MainActivity extends AppCompatActivity implements IMainView, MyExpandAdapter.ModifyGoodsItemNumberListener, MyExpandAdapter.CheckGroupItemListener {private TextView tvAllPrice;private TextView btnAmount;private TextView btnEditor;private CheckBox btnCheckAll;private ExpandableListView expandList;private ShopCarPresenter shopCarPresenter;private MyExpandAdapter adapter;private List<ShopCarBean.DataBean> list;//购买商品的总数量private int totalNum = 0;//购买商品的总价private double totalPrice= 0.00;//默认是falseprivate boolean flag;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);//隐藏actionbargetSupportActionBar().hide();//查找控件init();//获取购物车信息shopCarPresenter = new ShopCarPresenter(this);shopCarPresenter.getCarInfo("4861");//设置适配器adapter = new MyExpandAdapter(this);expandList.setAdapter(adapter);//设置商品加减的监听adapter.setModifyGoodsItemNumberListener(this);//设置商家以及商品是否被选中的监听adapter.setCheckGroupItemListener(this);//底部复选框的点击事件btnCheckAll.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View view) {isChoosedAll(((CheckBox)view).isChecked());//计算总价checkedPrice();}});//编辑的点击事件btnEditor.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View view) {if(!flag){//编辑 -> 完成flag=true;btnEditor.setText("完成");adapter.showDeleteButton(flag);}else{flag=false;btnEditor.setText("编辑");adapter.showDeleteButton(flag);}}});}private void init() {//二级列表expandList = (ExpandableListView) findViewById(R.id.expandList);//购物车底部栏的全选框btnCheckAll = (CheckBox) findViewById(R.id.btnCheckAll);//合计，计算总价tvAllPrice = (TextView) findViewById(R.id.tvAllPrice);//结算按钮btnAmount = (TextView) findViewById(R.id.btnAmount);//找到编辑控件btnEditor = (TextView) findViewById(R.id.btnEditor);}//默认展开二级列表的方法private void defaultExpand(){for(int i=0;i<adapter.getGroupCount();i++){expandList.expandGroup(i);}}@Overridepublic void onSuccess(List<ShopCarBean.DataBean> data) {this.list=data;adapter.setList(list);//默认展开二级列表defaultExpand();}@Overridepublic void onFailed(String msg) {Toast.makeText(this,msg.toString(),Toast.LENGTH_SHORT).show();}//商品加@Overridepublic void doIncrease(int groupPosition, int childPosition, View view) {ShopCarBean.DataBean.ListBean listBean = list.get(groupPosition).getList().get(childPosition);//取出当前的商品数量int currentNum = listBean.getNum();//商品++currentNum++;//将商品数量设置javabean上listBean.setNum(currentNum);//刷新适配器adapter.notifyDataSetChanged();//计算总价checkedPrice();}
//商品减@Overridepublic void doDecrease(int groupPosition, int childPosition, View view) {ShopCarBean.DataBean.ListBean listBean = list.get(groupPosition).getList().get(childPosition);int currentNum = listBean.getNum();if(currentNum==1){return;}currentNum--;listBean.setNum(currentNum);//刷新适配器adapter.notifyDataSetChanged();//计算总价checkedPrice();}
//商品删除@Overridepublic void deleteItem(int childPosition) {list.remove(childPosition);//刷新适配器adapter.notifyDataSetChanged();//计算总价checkedPrice();}//商家checkbox@Overridepublic void checkGroupItem(int groupPosition, boolean isChecked) {//商家javabeanShopCarBean.DataBean dataBean = list.get(groupPosition);//商家的复选框的选中状态dataBean.setGroupChoosed(isChecked);//遍历商家里面的商品，将商品置为同样的状态for(ShopCarBean.DataBean.ListBean listBean:dataBean.getList()){listBean.setChildChoosed(isChecked);}//将底部全选btnCheckAll置为与上面同样的状态if(isCheckAll()){btnCheckAll.setChecked(true);}else{btnCheckAll.setChecked(false);}//刷新适配器adapter.notifyDataSetChanged();//计算总价checkedPrice();}//商品的checkBox@Overridepublic void checkChildItem(int groupPosition, int childPosition, boolean isChecked) {ShopCarBean.DataBean dataBean = list.get(groupPosition);//商家ShopCarBean.DataBean.ListBean listBean = dataBean.getList().get(childPosition);//商品//你点击商家的商品条目将其选中状态记录listBean.setChildChoosed(isChecked);//检测商家里面的每一个商品是否被选中，如果被选中，返回booleanboolean result = isGoodsCheckAll(groupPosition);if(result){dataBean.setGroupChoosed(result);}else{dataBean.setGroupChoosed(result);}//底部结算那个checkbox状态(全选)if(isCheckAll()){btnCheckAll.setChecked(true);}else{btnCheckAll.setChecked(false);}//刷新适配器adapter.notifyDataSetChanged();//计算总价checkedPrice();}/*** 检测某个商家的商品是否都选中，如果都选中的话，商家CheckBox应该是选中状态* @param groupPosition* @return*/private boolean isGoodsCheckAll(int groupPosition){List<ShopCarBean.DataBean.ListBean> lists = this.list.get(groupPosition).getList();//遍历某一个商家的每个商品是否被选中for(ShopCarBean.DataBean.ListBean list:lists){if(list.isChildChoosed()){//是选中状态continue;}else{return false;}}return true;}//购物车商品是否全部选中private boolean isCheckAll(){for(ShopCarBean.DataBean dataBean:list){if(!dataBean.isGroupChoosed()){return false;}}return true;}//全选反选private void isChoosedAll(boolean isChecked){for(ShopCarBean.DataBean dataBean:list){dataBean.setGroupChoosed(isChecked);for(ShopCarBean.DataBean.ListBean listBean:dataBean.getList()){listBean.setChildChoosed(isChecked);}}//刷新适配器adapter.notifyDataSetChanged();}/*** 计算你所选中的商品总价*/private void checkedPrice(){//初始化值totalNum = 0;totalPrice = 0.00;for (ShopCarBean.DataBean dataBean : list){for (ShopCarBean.DataBean.ListBean listBean : dataBean.getList()){if(listBean.isChildChoosed()){totalNum++;totalPrice += listBean.getNum()*listBean.getPrice();}}}//设置文本信息 合计、结算的商品数量tvAllPrice.setText("合计:￥"+totalPrice);btnAmount.setText("结算("+totalNum+")");}
//解绑@Overrideprotected void onDestroy() {super.onDestroy();shopCarPresenter.onDestory();}
}

view包下adapter包

MyExpandAdapter


public class MyExpandAdapter extends BaseExpandableListAdapter{private List<ShopCarBean.DataBean> data;private Context context;//商品加减的一个接口变量private ModifyGoodsItemNumberListener modifyGoodsItemNumberListener;//商家商品是否被选中private CheckGroupItemListener checkGroupItemListener;//接收是否处于编辑状态的一个boolean值private boolean isEditor;public MyExpandAdapter(Context context) {this.context = context;}public void setList(List<ShopCarBean.DataBean> data){this.data=data;notifyDataSetChanged();}//设置商品的加减监听public void setModifyGoodsItemNumberListener(ModifyGoodsItemNumberListener modifyGoodsItemNumberListener) {this.modifyGoodsItemNumberListener = modifyGoodsItemNumberListener;}//设置商店商品checkBox选中监听public void setCheckGroupItemListener(CheckGroupItemListener checkGroupItemListener) {this.checkGroupItemListener = checkGroupItemListener;}//是否显示删除按钮public void showDeleteButton(boolean isEditor){this.isEditor=isEditor;//刷新适配器notifyDataSetChanged();}@Overridepublic int getGroupCount() {return data!=null?data.size():0;}@Overridepublic int getChildrenCount(int i) {return data!=null&&data.get(i).getList()!=null?data.get(i).getList().size():0;}@Overridepublic Object getGroup(int groupPosition) {return data.get(groupPosition);}@Overridepublic Object getChild(int groupPosition, int childPosition) {return data.get(groupPosition).getList().get(childPosition);}@Overridepublic long getGroupId(int groupPosition) {return groupPosition;}@Overridepublic long getChildId(int groupPosition, int childPosition) {return childPosition;}@Overridepublic boolean hasStableIds() {return false;}@Overridepublic View getGroupView(final int groupPosition, boolean b, View view, ViewGroup parent) {if(view==null){view = LayoutInflater.from(context).inflate(R.layout.layout_group, parent, false);}CheckBox group_choosed = view.findViewById(R.id.group_choosed);group_choosed.setText(data.get(groupPosition).getSellerName());//判断商家的复选框的选中状态if(data.get(groupPosition).isGroupChoosed()){group_choosed.setChecked(true);}else{group_choosed.setChecked(false);}//设置商家复选框的点击事件group_choosed.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View view) {checkGroupItemListener.checkGroupItem(groupPosition,((CheckBox)view).isChecked());}});return view;}@Overridepublic View getChildView(final int groupPosition, final int childPosition, boolean b, View view, ViewGroup parent) {if(view==null){view = LayoutInflater.from(context).inflate(R.layout.layout_child, parent, false);}//商品选择final CheckBox child_choosed = view.findViewById(R.id.child_choosed);//商品图片ImageView img = view.findViewById(R.id.img);//商品主标题TextView titleName = view.findViewById(R.id.titleName);//商品副标题TextView littleTitle = view.findViewById(R.id.littleTitle);//商品价格TextView price = view.findViewById(R.id.price);//商品数量TextView count = view.findViewById(R.id.count);//商品减TextView btnSub = view.findViewById(R.id.btnSub);//商品加减中的数量变化final TextView showNum = view.findViewById(R.id.showNum);//商品加TextView btnAdd = view.findViewById(R.id.btnAdd);//删除按钮Button delete = view.findViewById(R.id.delete);//设置文本信息titleName.setText(data.get(groupPosition).getList().get(childPosition).getTitle());littleTitle.setText(data.get(groupPosition).getList().get(childPosition).getSubhead());price.setText("￥"+data.get(groupPosition).getList().get(childPosition).getPrice());count.setText("x"+data.get(groupPosition).getList().get(childPosition).getNum());showNum.setText(data.get(groupPosition).getList().get(childPosition).getNum()+"");
//分割图片String images = data.get(groupPosition).getList().get(childPosition).getImages();String[] urls = images.split("\\|");//加载图片Glide.with(context).load(urls[0]).into(img);//商品加btnAdd.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View view) {modifyGoodsItemNumberListener.doIncrease(groupPosition,childPosition,showNum);}});//商品减btnSub.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View view) {modifyGoodsItemNumberListener.doDecrease(groupPosition,childPosition,showNum);}});//商品删除delete.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View view) {modifyGoodsItemNumberListener.deleteItem(childPosition);}});//设置商品复选框的点击事件child_choosed.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View view) {checkGroupItemListener.checkChildItem(groupPosition,childPosition,((CheckBox)view).isChecked());}});// 判断商品的复选框的选中状态if(data.get(groupPosition).getList().get(childPosition).isChildChoosed()){child_choosed.setChecked(true);}else{child_choosed.setChecked(false);}//控制删除按钮的隐藏与显示if(isEditor){delete.setVisibility(View.VISIBLE);}else{delete.setVisibility(View.GONE);}return view;}@Overridepublic boolean isChildSelectable(int groupPosition, int childPosition) {return false;}/***商家的复选框以及商品的复选框是否被选中的接口* 商家复选框以及商品复选框是否被选中接口*/public interface  CheckGroupItemListener{//商家的条目的复选框监听void checkGroupItem(int groupPosition,boolean isChecked);//商品的void checkChildItem(int groupPosition,int childPosition,boolean isChecked);}/*** 商品加减接口*/public interface ModifyGoodsItemNumberListener{void doIncrease(int groupPosition,int childPosition,View view);void doDecrease(int groupPosition,int childPosition,View view);void deleteItem(int childPosition);}
}

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