Android_二级列表购物车之增删改查,全选反选,加减器,价钱数量计算

第一步: 导依赖

Eventbus依赖:

compile 'org.greenrobot:eventbus:3.1.1'
gson依赖:
compile 'com.google.code.gson:gson:2.8.2'
OkHttp依赖:

compile 'com.squareup.okhttp3:okhttp:3.9.0'
recyclerView依赖:
compile 'com.android.support:recyclerview-v7:26.0.0-alpha1'
glid依赖:
repositories {
mavenCentral()
maven { url 'https://maven.google.com' }
}

dependencies {
compile 'com.github.bumptech.glide:glide:4.3.1'
annotationProcessor 'com.github.bumptech.glide:compiler:4.3.1'
}第二: 清单文件加权限:
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" />第三:布局 Main_Activity
<?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.bwei.www.yuekaomoni.Main2Activity">
<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="50dp"
android:layout_alignParentBottom="true"
android:background="@android:color/white"
android:gravity="center_vertical">

<CheckBox
android:id="@+id/checkbox2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_marginLeft="10dp"
android:focusable="false" />

<TextView
android:layout_width="wrap_content"
android:layout_height="50dp"
android:layout_centerVertical="true"
android:layout_marginLeft="10dp"
android:layout_toRightOf="@+id/checkbox2"
android:gravity="center_vertical"
android:text="全选"
android:textSize="20sp" />

<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="100dp"
android:orientation="horizontal">

<TextView

android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:text="合计 ：" />

<TextView
android:id="@+id/tv_price"
android:layout_width="wrap_content"
android:layout_height="50dp"
android:layout_marginLeft="10dp"
android:paddingRight="10dp"
android:text="0"
android:textColor="@android:color/holo_red_light" />

<TextView
android:layout_marginLeft="150dp"
android:id="@+id/tv_num"
android:layout_width="150dp"
android:layout_height="50dp"
android:background="@android:color/holo_red_dark"
android:gravity="center"
android:padding="10dp"
android:text="结算(0)"
android:textColor="@android:color/white" />
</LinearLayout>
</RelativeLayout>

</LinearLayout>

一级布局:
<?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="10dp"
android:gravity="center_vertical"
android:orientation="horizontal">

<CheckBox
android:id="@+id/cb_parent"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="5dp"
android:layout_marginLeft="10dp"
android:layout_marginTop="5dp"
android:focusable="false" />

<TextView
android:id="@+id/tv_sign"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="20dp"
android:text="标记" />

<TextView
android:id="@+id/tv_number"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="20dp"
android:text="12345678" />

</LinearLayout>

二级布局:
<?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:gravity="center_vertical"
android:orientation="horizontal">

<CheckBox
android:id="@+id/cb_child"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="30dp"
android:layout_marginLeft="10dp"
android:layout_marginTop="30dp"
android:focusable="false" />

<RelativeLayout
android:layout_width="100dp"
android:layout_height="100dp"
>
<TextView
android:id="@+id/tv_sbt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:singleLine="true"
android:ellipsize="end"
android:text="三只松鼠大礼包发动机"/>
<ImageView
android:layout_below="@id/tv_sbt"
android:layout_width="80dp"
android:layout_height="80dp"
android:id="@+id/img"
android:src="@mipmap/ic_launcher"/>
</RelativeLayout>

<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="3"
android:orientation="vertical">

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

android:text="¥3000.00" />
<TextView
android:id="@+id/tv_content"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="20dp"
android:text="什么" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical">
<com.bwei.www.yuekaomoni.myView.MyView
android:id="@+id/mv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"></com.bwei.www.yuekaomoni.myView.MyView>

</LinearLayout>

</LinearLayout>

<Button
android:id="@+id/tv_del"
android:layout_width="20dp"
android:layout_height="20dp"
android:background="@drawable/rublish"
/>
</LinearLayout>

加减器布局:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
<Button
android:id="@+id/btn_add"
android:layout_width="20dp"
android:layout_height="20dp"
android:background="@drawable/shopcart_add_red"/>
<EditText
android:id="@+id/et_et"
android:layout_width="50dp"
android:layout_height="wrap_content"
android:text="1"
android:textSize="20dp"/>
<Button
android:id="@+id/btn_del"
android:layout_width="20dp"
android:layout_height="20dp"
android:background="@drawable/shopcart_minus_red"/>
</LinearLayout>
第四:接口
public interface Callback {
void onSuccess(String tag,Object o);
void onFailure(String tag,Exception e);
}

public interface IView {
void Success (String tag, List<GsonBean.DataBean> list);
void Failed(String tag,Exception e);
}

第五: Okhttp
package com.bwei.www.yuekaomoni.okHttp;

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

import com.bwei.www.yuekaomoni.Callback.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;

/**
* @作者
* @时间 2017/11/18 10:34
*/

public class HttpUtils {
private static final String TAG = "HttpUtils";
private static volatile HttpUtils instanse;
final static Handler handler = new Handler();

private HttpUtils() {

}
public static HttpUtils getInstanse() {
if (null == instanse) {
synchronized (HttpUtils.class) {
if (instanse == null) {
instanse = new HttpUtils();
}
}
}
return instanse;
}
public void get(String url, Map<String, String> map, final Callback callBack,
final Class cls, final String tag) {
// http://www.baoidu.com/login?mobile=11111&password=11111&age=1&name=zw
// 1.http://www.baoidu.com/login --------？ key=value&key=value
// 2.http://www.baoidu.com/login? --------- k
e5fc
ey=value&key=value
// 3.http://www.baoidu.com/login?mobile=11111 -----&key=value&key=value
final StringBuffer sb = new StringBuffer();
sb.append(url);

if (TextUtils.isEmpty(url)) {
return;
}
// 如果包含？说明是2.3类型
if (url.contains("?")) {
// 如果包含？并且？是最后一位，对应是2类型
if (url.indexOf("?") == url.length() - 1) {

} else {
// 如果包含？并且？不是最后一位，对应是3类型
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("&")));
}
Log.i(TAG, "get:url " + sb.toString());
OkHttpClient client = new OkHttpClient.Builder().build();
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(tag,e);
}
});
}
@Override
public void onResponse(Call call, Response response) throws IOException {
final String s = response.body().string();
handler.post(new Runnable() {
Object o;
@Override
public void run() {
if(TextUtils.isEmpty(s)){
o=null;
}else
{
o = new Gson().fromJson(s, cls);
}
callBack.onSuccess(tag,o);
}
});
}
});
}
}
第六 :p层 {数据自己解析}
package com.bwei.www.yuekaomoni.present;

import com.bwei.www.yuekaomoni.Callback.Callback;
import com.bwei.www.yuekaomoni.Callback.IView;
import com.bwei.www.yuekaomoni.bean.GsonBean;
import com.bwei.www.yuekaomoni.okHttp.HttpUtils;

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

/**
* @作者
* @时间 2017/11/18 10:51
*/

public class PresentCar {
private IView inv;

public void attachView(IView inv) {
this.inv = inv;
}
public void getNews() {
//type=top&key=dbedecbcd1899c9785b95cc2d17131c5
Map<String, String> map = new HashMap<>();

HttpUtils.getInstanse().get("http://120.27.23.105/product/getCarts?uid=100", map, new Callback() {
@Override
public void onSuccess(String tag, Object o) {
GsonBean bean = (GsonBean) o;
if (bean != null) {
List<GsonBean.DataBean> data = bean.getData();

inv.Success(tag, data);
}
}

@Override
public void onFailure(String tag, Exception e) {
inv.Failed(tag, e);
}

}, GsonBean.class, "news");
}
public void detachView() {
if (inv != null) {
inv = null;
}
}
}
第七:二级列表适配器:
package com.bwei.www.yuekaomoni.adapter;

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

import com.bumptech.glide.Glide;
import com.bwei.www.yuekaomoni.R;
import com.bwei.www.yuekaomoni.bean.GsonBean;
import com.bwei.www.yuekaomoni.check.MessageEvent;
import com.bwei.www.yuekaomoni.eventbusevent.PriceAndCountEvent;
import com.bwei.www.yuekaomoni.myView.MyView;

import org.greenrobot.eventbus.EventBus;

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

import static com.bwei.www.yuekaomoni.R.id.img;
import static com.bwei.www.yuekaomoni.R.id.mv;
import static com.bwei.www.yuekaomoni.R.id.tv_content;
import static com.bwei.www.yuekaomoni.R.id.tv_pri;

/**
* @作者
* @时间 2017/11/18 11:17
*/

public class StarExpanderAdapter extends BaseExpandableListAdapter {
Context context;
List<GsonBean.DataBean> dataBeen;
ArrayList<List<GsonBean.DataBean.ListBean>> listBean;

public StarExpanderAdapter(Context context, List<GsonBean.DataBean> dataBeen, ArrayList<List<GsonBean.DataBean.ListBean>> listBean) {
this.context = context;
this.dataBeen = dataBeen;
this.listBean = listBean;

}

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

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

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

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

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

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

@Override
public boolean hasStableIds() {
return false;
}
//一级列表布局
@Override
public View getGroupView(final int i, boolean b, View view, ViewGroup viewGroup) {
final GsonBean.DataBean groupBean = dataBeen.get(i);
final GroupViewHolder holder;
if(view==null){
holder = new GroupViewHolder();
view = View.inflate(context, R.layout.gw_item2, null);
holder.tv_sbt = view.findViewById(R.id.tv_sign);
holder.cbgroup = view.findViewById(R.id.cb_parent);
view.setTag(holder);
}else
{
holder = (GroupViewHolder) view.getTag();
}
holder.cbgroup.setChecked(groupBean.isGropuCb());
holder.tv_sbt.setText(groupBean.getSellerName());
//一级列表checkBox的点击事件
holder.cbgroup.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
//判断一级列表复选框的状态 设置为true或false
groupBean.setGropuCb(holder.cbgroup.isChecked());
//改变二级checkbod的状态
changeChildeCbState(i,holder.cbgroup.isChecked());
//算钱
EventBus.getDefault().post(compute());
//改变全选状态 isAllGroupCbSelect判断一级是否全部选中
changeAllCbState(isAllGroupCbSelected());
//必刷新
notifyDataSetChanged();
}
});
return view;
}
//二级列表布局
@Override
public View getChildView(final int i, final int i1, boolean b, View view, ViewGroup viewGroup) {
final GsonBean.DataBean.ListBean clildBean = this.listBean.get(i).get(i1);
final ChildViewHolder childViewHolder;
if(view==null){
view = View.inflate(context, R.layout.gwc_item, null);
childViewHolder = new ChildViewHolder();
childViewHolder.tv_sbt = (TextView) view.findViewById(R.id.tv_sbt);
childViewHolder.img = (ImageView) view.findViewById(img);
childViewHolder.tv_pri = (TextView) view.findViewById(tv_pri);
childViewHolder.tv_content = (TextView) view.findViewById(tv_content);
childViewHolder.cbChild =view.findViewById(R.id.cb_child);
childViewHolder.mv = view.findViewById(mv);
childViewHolder.tv_del = view.findViewById(R.id.tv_del);
childViewHolder.et_et = (EditText) childViewHolder.mv.findViewById(R.id.et_et);
view.setTag(childViewHolder);
}else{
childViewHolder = (ChildViewHolder) view.getTag();
}
childViewHolder.tv_sbt.setText(clildBean.getTitle());
String images = clildBean.getImages();
String[] split = images.split("\\|");
Glide.with(context).load(split[0]).into(childViewHolder.img);
childViewHolder.tv_pri.setText(clildBean.getPrice()+"");
childViewHolder.tv_content.setText(clildBean.getSubhead());
childViewHolder.cbChild.setChecked(clildBean.isChildCb());
childViewHolder.et_et.setText(clildBean.getNum()+"");
//加号
childViewHolder.mv.setOnAddDelClickLstener(new MyView.OnAddDelClickLstener() {
@Override
public void onAddClick(View v) {
int num = clildBean.getNum();
//num为int类型所以要加空字符串
childViewHolder.et_et.setText(++num+"");
clildBean.setNum(num);
//如果二级列表的checkbox为选中,计算价钱
if (childViewHolder.cbChild.isChecked()){
PriceAndCountEvent priceAndCountEvent = compute();
EventBus.getDefault().post(priceAndCountEvent);
}
}
//减号
@Override
public void onDelClick(View v) {
int num = clildBean.getNum();
if(num==1){
return;
}
childViewHolder.et_et.setText(--num+"");
clildBean.setNum(num);
if(childViewHolder.cbChild.isChecked()){
PriceAndCountEvent priceAndCountEvent = compute();
EventBus.getDefault().post(priceAndCountEvent);
}
}
});
//删除
childViewHolder.tv_del.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
List<GsonBean.DataBean.ListBean> listBeen = listBean.get(i);
GsonBean.DataBean.ListBean remove = listBeen.remove(i1);
if(listBeen.size()==0){
//先移除二级列表的集合,再移除一级列表的集合
listBean.remove(i);
dataBeen.remove(i);
}
//算钱
EventBus.getDefault().post(compute());
notifyDataSetChanged();
}
});

//二级列表的点击事件
childViewHolder.cbChild.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
//设置该条目对象里的checked属性值
clildBean.setChildCb(childViewHolder.cbChild.isChecked());
//计算价钱
PriceAndCountEvent priceAndCountEvent = compute();
EventBus.getDefault().post(priceAndCountEvent);
//判断当前checkbox是选中的状态
if(childViewHolder.cbChild.isChecked()){
//如果全部选中(isAllChildCbSelected)
if(isAllChildCbSelected(i)){
//改变一级列表的状态
changGroupCbState(i,true);
//改变全选的状态
changeAllCbState(isAllGroupCbSelected());
}
}else {
//如果没有全部选中,一级列表的checkbox为false不为选中
changGroupCbState(i,false);
changeAllCbState(isAllGroupCbSelected());
}
notifyDataSetChanged();
}
});

return view;
}

@Override
public boolean isChildSelectable(int i, int i1) {
return true;
}
class GroupViewHolder {
CheckBox cbgroup;
TextView tv_sbt;
}
class ChildViewHolder {
TextView tv_sbt;
ImageView img;
TextView tv_pri;
TextView tv_content;
CheckBox cbChild;
MyView mv;
TextView tv_del;

EditText et_et;
}

/**
* 改变二级列表checkbox状态
* 如果一级选中,控制二级也选中
* @param i
* @param flag
*/
private void changeChildeCbState(int i,boolean flag){
List<GsonBean.DataBean.ListBean> listBeen = listBean.get(i);
for (int j = 0; j <listBeen.size(); j++) {
GsonBean.DataBean.ListBean listBean = listBeen.get(j);
listBean.setChildCb(flag);
}
}

/**
* 判断一级列表是否全选中
* @return
*/
private boolean isAllGroupCbSelected(){
for (int i = 0; i <dataBeen.size() ; i++) {
GsonBean.DataBean dataBean = dataBeen.get(i);
if(!dataBean.isGropuCb()){
return false;
}
}
return true;
}
/**
* 改变全选的状态
*
* @param flag
*/
private void changeAllCbState(boolean flag){
MessageEvent messageEvent = new MessageEvent();
messageEvent.setChecked(flag);
EventBus.getDefault().post(messageEvent);
}

/**
* 判断二级列表是否全部选中
* @param i
* @return
*/
private boolean isAllChildCbSelected (int i){
List<GsonBean.DataBean.ListBean> listBeen = listBean.get(i);
for (int j = 0; j <listBeen.size() ; j++) {
GsonBean.DataBean.ListBean listBean = listBeen.get(j);
if(!listBean.isChildCb()){
return false;
}
}
return true;
}
/**
* 改变一级列表checkbox状态
*
* @param i
*/
private void changGroupCbState(int i,boolean flag){
GsonBean.DataBean dataBean = dataBeen.get(i);
dataBean.setGropuCb(flag);
}

/**
* 改变二级列表checkbox状态
* @param i
* @param flag
*/
private void changeChildCbState(int i,boolean flag){
List<GsonBean.DataBean.ListBean> listBeen = listBean.get(i);
for (int j = 0; j <listBeen.size() ; j++) {
GsonBean.DataBean.ListBean listBean = listBeen.get(j);
listBean.setChildCb(flag);
}
}
/**
* 计算列表中，选中的钱和数量
*/
private PriceAndCountEvent compute(){
int count = 0;
int price = 0;
for (int i = 0; i <listBean.size() ; i++) {
List<GsonBean.DataBean.ListBean> listBeen = listBean.get(i);
for (int j = 0; j <listBeen.size() ; j++) {
GsonBean.DataBean.ListBean listBean = listBeen.get(j);
if(listBean.isChildCb()){
price+=listBean.getNum()*listBean.getPrice();
count+=listBean.getNum();
}
}
}
PriceAndCountEvent priceAndCountEvent = new PriceAndCountEvent();
priceAndCountEvent.setCount(count);
priceAndCountEvent.setPrice(price);
return priceAndCountEvent;
}
/**
* 设置全选、反选
*
* @param flag
*/
public void changeAllListCbState(boolean flag) {
for (int i = 0; i < dataBeen.size(); i++) {
changGroupCbState(i, flag);
changeChildCbState(i, flag);
}
//算钱
EventBus.getDefault().post(compute());
notifyDataSetChanged();
}

}
第八:MessageEvent类:

public class MessageEvent {
private boolean checked;

public boolean isChecked() {
return checked;
}

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

PriceAndCountEvent 类:

public class PriceAndCountEvent {
private int price;
private int count;

public int getPrice() {
return price;
}

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

public int getCount() {
return count;
}

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

第九:

MainActivity:

package com.bwei.www.yuekaomoni;

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

import com.bwei.www.yuekaomoni.Callback.IView;
import com.bwei.www.yuekaomoni.adapter.StarExpanderAdapter;
import com.bwei.www.yuekaomoni.bean.GsonBean;
import com.bwei.www.yuekaomoni.eventbusevent.MessageEvent;
import com.bwei.www.yuekaomoni.eventbusevent.PriceAndCountEvent;
import com.bwei.www.yuekaomoni.present.PresentCar;

import org.greenrobot.eventbus.EventBus;
import org.greenrobot.eventbus.Subscribe;

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

public class Main2Activity extends AppCompatActivity implements IView {

private ExpandableListView elv;
ArrayList<GsonBean.DataBean> dataBeen = new ArrayList<>();
private CheckBox checkquan;
private List<GsonBean.DataBean.ListBean> lists;
ArrayList<List<GsonBean.DataBean.ListBean>> listBean = new ArrayList<>();
private StarExpanderAdapter adapter;
private TextView tv_price;
private TextView tv_num;
private PresentCar presentCar;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
//注册一下
EventBus.getDefault().register(this);
//获取控件
elv = (ExpandableListView) findViewById(R.id.elv);
checkquan = (CheckBox) findViewById(R.id.checkbox2);
tv_price = (TextView) findViewById(R.id.tv_price);
tv_num = (TextView) findViewById(R.id.tv_num);
//获取数据
presentCar = new PresentCar();
presentCar.attachView(this);
presentCar.getNews();
checkquan.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
//设置全选
adapter.changeAllListCbState(checkquan.isChecked());
}
});

}
//销毁方法
@Override
protected void onDestroy() {
super.onDestroy();
//eventBus销毁
EventBus.getDefault().unregister(this);
if (presentCar!=null){
presentCar.detachView();
}

}
@Override
public void Success(String tag, List<GsonBean.DataBean> list) {
dataBeen.addAll(list);
for (int i = 0; i < dataBeen.size(); i++) {
GsonBean.DataBean bean = dataBeen.get(i);
lists = bean.getList();
listBean.add(lists);
}

adapter = new StarExpanderAdapter(Main2Activity.this,dataBeen,listBean);
elv.setAdapter(adapter);
//隐藏二级列表前小三角
elv.setGroupIndicator(null);
//使二级列表一直展示
for (int i = 0; i <dataBeen.size() ; i++) {
elv.expandGroup(i);
}

}

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

}
//必写注解
@Subscribe
public void onMessageEvent(MessageEvent event) {
checkquan.setChecked(event.isChecked());
}

@Subscribe
public void onMessageEvent(PriceAndCountEvent event) {
tv_num.setText("结算(" + event.getCount() + ")");
tv_price.setText(event.getPrice() + "");
}
}

还有一个 自定义View:

package com.bwei.www.yuekaomoni.myView;

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

import com.bwei.www.yuekaomoni.R;

/**
* @作者
* @时间 2017/11/18 09:56
*/

public class MyView extends LinearLayout{
private OnAddDelClickLstener lister;
private Button btn_add;
private Button txtAdd;
private EditText et_et;
private Button btn_del;

//定义一个对外开放的接口
public interface OnAddDelClickLstener{
void onAddClick(View v);
void onDelClick(View v);
}
public void setOnAddDelClickLstener(OnAddDelClickLstener lister){
if(lister!=null){
this.lister = lister;
}
}
public MyView(Context context) {
this(context,null);
}

public MyView(Context context, @Nullable AttributeSet attrs) {
this(context, attrs,0);
}

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

private void initView(Context context, AttributeSet attrs, int defStyleAttr) {
View.inflate(context, R.layout.myview,this);
btn_add = (Button) findViewById(R.id.btn_add);
btn_del = (Button) findViewById(R.id.btn_del);
et_et = (EditText) findViewById(R.id.et_et);

btn_del.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
Log.e("AddDeleteView","点击了减号");
lister.onDelClick(view);
}
});
btn_add.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
Log.e("txtAdd","点击了加号");
lister.onAddClick(view);
}
});

}

}