二级列表 购物车

compile 'com.squareup.okhttp3:okhttp:3.9.0'
compile 'com.jakewharton:butterknife:8.8.1'
compile 'com.jakewharton:butterknife-compiler:8.8.1'
compile 'com.nostra13.universalimageloader:universal-image-loader:1.9.5'
compile 'com.liaoinstan.springview:library:1.2.6'
compile 'com.github.liuguangqiang.SuperRecyclerView:super-recyclerview:0.1.2'
compile files('libs/gson-2.3.1.jar')

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="app.com.myapplication">

<uses-permission android:name="android.permission.INTERNET" />
<application
android:name=".MyApp"
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />

<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>

</manifest>

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">

<android.support.v7.widget.RecyclerView
android:id="@+id/rv"
android:background="#fff"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1" />

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

<TextView
android:id="@+id/qx_btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_margin="15dp"
android:drawableLeft="@drawable/shopcart_unselected"
android:text="全选"
android:textSize="22dp" />

<LinearLayout
android:layout_width="wrap_content"
android:layout_height="50dp"
android:layout_alignParentBottom="true"
android:layout_gravity="center_vertical"
android:layout_weight="1"
android:orientation="vertical">

<TextView
android:id="@+id/zongjia"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="总价:0.0" />

<TextView
android:id="@+id/geshu"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:text="共0件商品" />
</LinearLayout>

<TextView
android:id="@+id/js_btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_margin="13dp"
android:background="@drawable/jiesuan_btn"
android:paddingBottom="10dp"
android:paddingLeft="30dp"
android:paddingRight="30dp"
android:paddingTop="10dp"
android:text="去结算"
android:textSize="24dp" />
</LinearLayout>
</LinearLayout>

item_rv.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="match_parent"
android:orientation="vertical">

<LinearLayout
android:id="@+id/ll"
android:layout_width="match_parent"
android:layout_height="50dp">

<!--商铺选中的√-->
<Button
android:id="@+id/shop_cb"
android:layout_width="20dp"
android:layout_height="20dp"
android:layout_gravity="center"
android:layout_marginLeft="15dp"
android:layout_marginRight="30dp"
android:background="@drawable/shopcart_unselected" />

<!--商铺的图片-->
<TextView
android:id="@+id/shop_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:drawableLeft="@drawable/shopcart_shop"
android:text="商铺"
android:textSize="22dp" />
</LinearLayout>

<LinearLayout
android:layout_marginLeft="20dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">

<TextView
android:id="@+id/sp_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="78dp"
android:layout_marginTop="10dp"
android:text="商品"
android:textSize="20dp" />

<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<!--商品选中的√-->
<Button
android:id="@+id/sp_cb"
android:layout_width="20dp"
android:layout_height="20dp"
android:layout_gravity="center"
android:layout_marginLeft="20dp"
android:layout_marginRight="30dp"
android:background="@drawable/shopcart_unselected" />

<ImageView
android:id="@+id/sp_ima"
android:layout_width="100dp"
android:layout_height="100dp"
android:layout_gravity="center_vertical"
android:src="@mipmap/ic_launcher" />

<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:orientation="vertical">

<TextView
android:id="@+id/sp_xj"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="5dp"
android:layout_marginTop="8dp"
android:text="现价"
android:textSize="18dp" />

<TextView
android:id="@+id/sp_yj"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="原价"
android:textSize="18dp" />
<!--加减号   组合控件-->
<app.com.myapplication.CountView<!--换成自己的CountView-->

android:id="@+id/cv"

android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginBottom="10dp" android:layout_marginTop="5dp" /> </LinearLayout> <!--删除--> <ImageView android:id="@+id/shanchu" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center_vertical" android:layout_marginRight="30dp" android:src="@drawable/shopcart_delete" /> </LinearLayout> </LinearLayout></LinearLayout>

countview.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="match_parent">
<!--减号-->
<Button
android:id="@+id/gs_jian"
android:layout_width="25dp"
android:layout_height="25dp"
android:background="@drawable/shopcart_minus_grey" />
<!--中间显示的个数-->
<TextView
android:id="@+id/count"
android:layout_width="50dp"
android:layout_height="30dp"
android:text="1"
android:layout_marginLeft="20dp"
android:textAlignment="center"
android:textSize="20dp" />
<!--加号-->
<Button
android:id="@+id/gs_jia"
android:layout_width="25dp"
android:layout_height="25dp"
android:background="@drawable/shopcart_add_red" />
</LinearLayout>

bean包   ShopBean.java

package app.com.myapplication.bean;

import java.util.List;

/**
* @author ddy
*/
public class ShopBean {
/**
* msg : 请求成功
* code : 0
* data : [{"list":[{"bargainPrice":22.9,"createtime":"2017-10-14T21:48:08","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":2,"pid":24,"price":288,"pscid":2,"selected":0,"sellerid":1,"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1","sellerid":"1"},{"list":[{"bargainPrice":11800,"createtime":"2017-10-14T21:38:26","detailUrl":"https://item.m.jd.com/product/5025518.html?utm#_source=androidapp&utm#_medium=appshare&utm#_campaign=t#_335139774&utm#_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t8830/106/1760940277/195595/5cf9412f/59bf2ef5N5ab7dc16.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t5428/70/1520969931/274676/b644dd0d/591128e7Nd2f70da0.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t5566/365/1519564203/36911/620c750c/591128eaN54ac3363.jpg!q70.jpg","num":1,"pid":58,"price":6399,"pscid":40,"selected":0,"sellerid":2,"subhead":"升级4G大显存！Nvme协议Pcie SSD,速度快人一步】GTX1050Ti就选拯救者！专业游戏键盘&新模具全新设计！","title":"联想(Lenovo)拯救者R720 15.6英寸游戏笔记本电脑(i5-7300HQ 8G 1T+128G SSD GTX1050Ti 4G IPS 黑)"},{"bargainPrice":6666,"createtime":"2017-10-10T16:01:31","detailUrl":"https://item.m.jd.com/product/5089273.html?utm#_source=androidapp&utm#_medium=appshare&utm#_campaign=t#_335139774&utm#_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t8284/363/1326459580/71585/6d3e8013/59b857f2N6ca75622.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t9346/182/1406837243/282106/68af5b54/59b8480aNe8af7f5c.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t8434/54/1359766007/56140/579509d9/59b85801Nfea207db.jpg!q70.jpg","num":1,"pid":46,"price":234,"pscid":39,"selected":0,"sellerid":2,"subhead":"【iPhone新品上市】新一代iPhone，让智能看起来更不一样","title":"Apple iPhone 8 Plus (A1864) 64GB 金色 移动联通电信4G手机"}],"sellerName":"商家2","sellerid":"2"},{"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":85,"pid":10,"price":555.55,"pscid":1,"selected":0,"sellerid":3,"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3","sellerid":"3"},{"list":[{"bargainPrice":11800,"createtime":"2017-10-14T21:38:26","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":61,"price":14999,"pscid":40,"selected":0,"sellerid":5,"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5","sellerid":"5"},{"list":[{"bargainPrice":159,"createtime":"2017-10-14T21:49:15","detailUrl":"https://item.m.jd.com/product/5061723.html?utm_source=androidapp&utm_medium=appshare&utm_campaign=t_335139774&utm_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t8716/197/1271594444/173291/2f40bb4f/59b743bcN8509428e.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t8347/264/1286771527/92188/5cf5ec04/59b7420fN65378e9e.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t7363/165/3000956253/190883/179a372/59b743bfNd0c79d93.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t7399/112/2935531768/183594/b77c7d4a/59b7441aNc3d40133.jpg!q70.jpg","num":1,"pid":100,"price":2200,"pscid":112,"selected":0,"sellerid":11,"subhead":"针织针织闪闪闪亮你的眼","title":"维迩旎 2017秋冬新款长袖针织连衣裙韩版气质中长款名媛包臀A字裙 zx179709 黑色 XL"}],"sellerName":"商家11","sellerid":"11"},{"list":[{"bargainPrice":11800,"createtime":"2017-10-14T21:38:26","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":69,"price":16999,"pscid":40,"selected":0,"sellerid":13,"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13","sellerid":"13"},{"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":2,"price":299,"pscid":1,"selected":0,"sellerid":18,"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18","sellerid":"18"}]
*/

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":22.9,"createtime":"2017-10-14T21:48:08","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":2,"pid":24,"price":288,"pscid":2,"selected":0,"sellerid":1,"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1
* sellerid : 1
*/

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 {
/**
* bargainPrice : 22.9
* createtime : 2017-10-14T21:48:08
* 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 : 2
* pid : 24
* price : 288
* pscid : 2
* selected : 0
* sellerid : 1
* 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
*/

private double bargainPrice;
private String createtime;
private String detailUrl;
private String images;
private int num;
private int pid;

//进行小数转字符串
private double price;
private int pscid;

//单项
private int selected;
private int sellerid;
private String subhead;
private String title;

//第一个
int isshop;

//商铺
boolean shopsele;

public boolean getShopsele() {
return shopsele;
}

public void setShopsele(boolean shopsele) {
this.shopsele = shopsele;
}

public int getisshop() {
return isshop;
}

public void setisshop(int isshop) {
this.isshop = isshop;
}

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;
}
}
}
}

CountView.java

package app.com.myapplication;

import android.content.Context;
import android.support.annotation.Nullable;
import android.util.AttributeSet;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.TextView;

/**
* @author ddy
*/
public class CountView extends LinearLayout {
int mcount = 1;//实际初始个数
private TextView count;//中间显示的个数
JJLicense jjLicense;//接口

public int getCount() {
return mcount;
}

public void setCount(int mcount, JJLicense jjLicense) {
this.mcount = mcount;
this.jjLicense = jjLicense;
count.setText("" + mcount);
}

public CountView(Context context) {
super(context);
}

public CountView(Context context, @Nullable AttributeSet attrs) {
super(context, attrs);
//获得子布局
View view = LayoutInflater.from(context).inflate(R.layout.countview, null);
Button gsJian = view.findViewById(R.id.gs_jian);//减
count = view.findViewById(R.id.count);//中间显示的个数
Button gsJia = view.findViewById(R.id.gs_jia);//加

gsJian.setOnClickListener(new OnClickListener() {//减号的点击事件
@Override
public void onClick(View view) {
mcount--;//实际个数减 1
if (mcount > 0) {//判断  个数>0  的时候
count.setText("" + mcount);//把实际个数 赋给 显示的个数
jjLicense.jjclick(mcount);//改变中间显示的个数
} else {  //个数不大于0
mcount = 1; //实际个数就是 1
jjLicense.jjclick(mcount);//改变中间显示的个数
}
}
});
gsJia.setOnClickListener(new OnClickListener() {//加号的点击事件
@Override
public void onClick(View view) {
mcount++;//实际个数加 1
count.setText("" + mcount);//把实际个数 赋给 显示的个数
jjLicense.jjclick(mcount);//改变中间显示的个数
}
});
addView(view);
}

public CountView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
}

interface JJLicense {//修改中间显示的个数
//mcount中间显示的个数
void jjclick(int mcount);
}
}

MainActivity.java

package app.com.myapplication;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;

import com.google.gson.Gson;
import com.nostra13.universalimageloader.core.ImageLoader;

import java.io.IOException;
import java.text.DecimalFormat;
import java.util.ArrayList;
import java.util.List;

import app.com.myapplication.bean.ShopBean;
import butterknife.BindView;
import butterknife.ButterKnife;
import butterknife.OnClick;
import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;

public class MainActivity extends AppCompatActivity {

//RecyclerView
@BindView(R.id.rv)
RecyclerView rv;
@BindView(R.id.qx_btn)//全选按钮
TextView qxBtn;
@BindView(R.id.zongjia)//总价
TextView zongjia;
@BindView(R.id.geshu)//个数
TextView geshu;
@BindView(R.id.js_btn)//去结算
TextView jsBtn;
private List<ShopBean.DataBean.ListBean> data = new ArrayList<>();//商品的集合
private List<ShopBean.DataBean> shop = new ArrayList<>();//商铺的集合
boolean allck = false;
private MainActivity.rvAdapter rvAdapter;//适配器

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

private void gethttp() {
OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder().url("http://120.27.23.105/product/getCarts?uid=100").build();
client.newCall(request).enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {
//失败
}

@Override
public void onResponse(Call call, Response response) throws IOException {
//成功
Gson gson = new Gson();
//把获得的值,赋给商铺
shop = gson.fromJson(response.body().string(), ShopBean.class).getData();
for (int i = 0; i < shop.size(); i++) {
for (int j = 0; j < shop.get(i).getList().size(); j++) {
//把商铺里的商品  添加到商品的集合里
data.add(shop.get(i).getList().get(j));
}
}

//排列 商品与商铺的显示位置
getShou();

runOnUiThread(new Runnable() {
@Override
public void run() {
getzongshuju(); //计算商品个数和总价
//显示方式  VERTICAL   false倒序
rv.setLayoutManager(new LinearLayoutManager(MainActivity.this, LinearLayoutManager.VERTICAL, false));
rvAdapter = new rvAdapter();
rv.setAdapter(rvAdapter);//给RecyclerView赋值
}
});
}
});
}

//计算商品个数和总价
private void getzongshuju() {
double sum = 0;//初始价格总和
int zongshu = 0;//初始商品总数
for (int i = 0; i < data.size(); i++) {
if (data.get(i).getSelected() == 1) {//判断  商品是否是选中状态
//获得选中商品数量
int i1 = data.get(i).getNum();
//价格总和 = 价格总和 + 廉价后的价格* 选中商品数量
sum = sum + data.get(i).getBargainPrice() * i1;
//总个数=总个数+获得选中商品的数量
zongshu = zongshu + i1;
}
}
//将得到的总价  转换成浮点型 赋给 zongjia(总价)
zongjia.setText("总价:" + new DecimalFormat("0.00").format(sum));
geshu.setText("共" + zongshu + "件商品");//将得到的总个数赋给  geshu(个数)
}

//商品与商铺的排列
private void getShou() {
data.get(0).setisshop(0);//获得第一个商品的第一个商铺
for (int i = 1; i < data.size(); i++) {
//判断  商品的商铺id是否一样
if (data.get(i).getSellerid() == data.get(i - 1).getSellerid()) {
//如果是一样，直接添加到前一个商品后面
data.get(i).setisshop(1);
} else {
//如果不是一样  成为新的商铺的第一个商品
data.get(i).setisshop(0);
}
}
}

@OnClick(R.id.qx_btn)
public void onViewClicked() {
allck = !allck;//全部选中,或者全部不选中
if (allck) { //判断   是否是全选中状态
//是全选中状态    赋给全选按钮的背景资源是  shopcart_selected  这个图片
qxBtn.setBackgroundResource(R.drawable.shopcart_selected);
for (int i = 0; i < data.size(); i++) {
//给商品的选中状态都变成 1   (就是选中状态)
data.get(i).setSelected(1);
data.get(i).setShopsele(true);//给商铺的选中状态都变成 true   (就是选中状态)
}
} else {
//不是全选中状态    赋给全选按钮的背景资源是  shopcart_unselected  这个图片
qxBtn.setBackgroundResource(R.drawable.shopcart_unselected);
for (int i = 0; i < data.size(); i++) {
data.get(i).setSelected(0);//给商品的选中状态都变成 0  (就是不选中状态)
data.get(i).setShopsele(false);//给商铺的选中状态都变成 false   (就是不选中状态)
}
}
getzongshuju();//计算商品个数和总价
rvAdapter.notifyDataSetChanged();//刷新适配器

}

class rvAdapter extends RecyclerView.Adapter<rvAdapter.ViewHolder> {

@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
//获得子布局
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_rv, null);
return new ViewHolder(view);
}

@Override
public void onBindViewHolder(final ViewHolder holder, final int position) {
//判断 商品位置是否是商铺第一个
if (data.get(position).getisshop() == 0) {
//是第一个的时候 在商品上面  显示出商铺
holder.linearLayout.setVisibility(View.VISIBLE);
} else {
//在商品上面  不显示出商铺
holder.linearLayout.setVisibility(View.GONE);
}

for (int i = 0; i < shop.size(); i++) {
// 判断   商铺中的商铺id和 商品中的商铺id
if (shop.get(i).getSellerid().equals("" + data.get(position).getSellerid())) {
//把获得的商铺的名字  赋给 商铺   （获得商铺的名字）
holder.shopName.setText(shop.get(i).getSellerName());
break;
}
}
//判断商品中  商铺的选中状态
if (data.get(position).getShopsele()) {//商铺的选中状态是  true
//商铺前面的选中框  赋给选中框的背景资源是  shopcart_selected  这个图片
holder.shopCb.setBackgroundResource(R.drawable.shopcart_selected);
} else {//商铺的选中状态是  false
//商铺前面的选中框  赋给选中框的背景资源是  shopcart_unselected  这个图片
holder.shopCb.setBackgroundResource(R.drawable.shopcart_unselected);
}
//判断   商品的选中状态是否是 1
if (data.get(position).getSelected() == 1) {
//商品前面的选中框  赋给选中框的背景资源是  shopcart_selected  这个图片
holder.spCb.setBackgroundResource(R.drawable.shopcart_selected);
} else if (data.get(position).getSelected() == 0) {//判断   商品的选中状态是否是 0
//商品前面的选中框  赋给选中框的背景资源是  shopcart_selected  这个图片
holder.spCb.setBackgroundResource(R.drawable.shopcart_unselected);
}

//图片的字符串截取   [0]指的是取截取的第一段字符串
String s = data.get(position).getImages().split("\\|")[0];
ImageLoader.getInstance().displayImage(s, holder.spIma);

holder.spName.setText(data.get(position).getTitle());
holder.spXj.setText("现价:" + data.get(position).getBargainPrice());
holder.spYj.setText("原价:" + data.get(position).getPrice());

//加减按钮
holder.cv.setCount(data.get(position).getNum(), new CountView.JJLicense() {
@Override
public void jjclick(int mcount) {
data.get(position).setNum(mcount);//把增加或者减小了的值赋给  对应的商品
getzongshuju();//计算商品个数和总价
}
});

//商品的点击事件
holder.shopCb.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
//商品的商铺状态   true变false    false变true   反选
data.get(position).setShopsele(!data.get(position).getShopsele());

//子单选
for (int i = 0; i < data.size(); i++) {
//判断   position下标的商品的商铺id  ==  i 下标的商品的商铺id
if (data.get(position).getSellerid() == data.get(i).getSellerid()) {
if (data.get(position).getShopsele()) {//商品的商铺状态为 true
data.get(i).setSelected(1);//商铺下  商品的选中状态是  1
} else {
data.get(i).setSelected(0);//商铺下  商品的选中状态是  0
}
}
}

getall();//检查一下是否全选
getzongshuju();//计算商品个数和总价
notifyDataSetChanged();//刷新适配器
}
});

//商品的点击事件
holder.spCb.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (data.get(position).getSelected() == 0) {//判断商品的状态是否是 0
data.get(position).setSelected(1);//将商品的状态变为 1
data.get(position).setShopsele(true);//商铺的状态变为  true
} else {
data.get(position).setSelected(0);//将商品的状态变为 0
data.get(position).setShopsele(false);//商铺的状态变为  false
}

//子全选
for (int j = 0; j < data.size(); j++) {
if (data.get(j).getisshop() == 0) {
for (int i = 0; i < data.size(); i++) {
if (data.get(j).getSellerid() == data.get(i).getSellerid() && data.get(i).getSelected() == 0) {
data.get(j).setShopsele(false);//商铺的状态是  false
break;
} else {
data.get(j).setShopsele(true);//商铺的状态是  true
}
}
}
}

getall();//检查一下是否全选
getzongshuju();//计算商品个数和总价
notifyDataSetChanged();//刷新适配器
}
});

//删除的监听事件
holder.shanchu.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
//移除下标是position的数据
data.remove(position);

//重新展示商铺和商品
getShou();

//重新计算数量和价格
getzongshuju();

//刷新适配器
notifyDataSetChanged();
}
});
}

//全选
private void getall() {
boolean all = true;
for (int j = 0; j < data.size(); j++) {
//循环获得数组的选中状态  判断是否存在等于0的（未选中）
if (data.get(j).getSelected() == 0) {
//如果有  则全选状态是未选中
all = false;
}
}

//全选状态是true
if (all) {
qxBtn.setBackgroundResource(R.drawable.shopcart_selected);
} else {
//全选状态是false
qxBtn.setBackgroundResource(R.drawable.shopcart_unselected);
}
}

@Override
public int getItemCount() {
//数组的大小长度
return data.size();
}

class ViewHolder extends RecyclerView.ViewHolder {
//商铺前面的选中框
@BindView(R.id.shop_cb)
Button shopCb;
//商铺的名字
@BindView(R.id.shop_name)
TextView shopName;
//商品的名字
@BindView(R.id.sp_name)
TextView spName;
//商品前面的选中框
@BindView(R.id.sp_cb)
Button spCb;
//商品的图片
@BindView(R.id.sp_ima)
ImageView spIma;
//现价
@BindView(R.id.sp_xj)
TextView spXj;
//原价
@BindView(R.id.sp_yj)
TextView spYj;
//加减号   组合控件
@BindView(R.id.cv)
CountView cv;

private final LinearLayout linearLayout;
//删除图片
private final ImageView shanchu;

ViewHolder(View view) {
super(view);
ButterKnife.bind(this, view);
//设置商家的显示或者隐藏   (同一个商家只显示一次,不多次显示)
linearLayout = view.findViewById(R.id.ll);

//删除图片
shanchu = view.findViewById(R.id.shanchu);
}
}
}
}

MyApp.java

package app.com.myapplication;

import android.app.Application;

import com.nostra13.universalimageloader.core.ImageLoader;
import com.nostra13.universalimageloader.core.ImageLoaderConfiguration;

/**
* @author ddy
*/
public class MyApp extends Application {

@Override
public void onCreate() {
super.onCreate();
ImageLoaderConfiguration imageLoaderConfiguration = ImageLoaderConfiguration.createDefault(getApplicationContext());
ImageLoader.getInstance().init(imageLoaderConfiguration);
}
}