使用RxJava和Recyclerview实现购物车编辑删除加减商品数量

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我是靠谱客的博主紧张蜡烛，最近开发中收集的这篇文章主要介绍使用RxJava和Recyclerview实现购物车编辑删除加减商品数量，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

使用的依赖和权限

implementation 'com.squareup.okhttp3:okhttp:3.9.0'
implementation 'com.google.code.gson:gson:2.8.2'
implementation 'com.jakewharton:butterknife:8.8.1'
annotationProcessor 'com.jakewharton:butterknife-compiler:8.8.1'
implementation 'com.facebook.fresco:fresco:0.12.0'
// 支持 GIF 动图，需要添加
implementation 'com.facebook.fresco:animated-gif:0.12.0'
implementation 'com.squareup.retrofit2:retrofit:2.4.0'
implementation 'com.squareup.retrofit2:converter-gson:2.4.0'
implementation 'com.squareup.retrofit2:adapter-rxjava2:2.4.0'
implementation 'io.reactivex.rxjava2:rxjava:2.1.13'
implementation 'io.reactivex.rxjava2:rxandroid:2.0.2'
implementation 'com.google.dagger:dagger:2.8'
annotationProcessor 'com.google.dagger:dagger-compiler:2.7'
implementation 'com.squareup.retrofit2:converter-scalars:2.4.0'
implementation 'com.android.support:recyclerview-v7:27.1.1'
implementation 'com.android.support:support-v4:27.1.1'

<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"/>

activity_main

<?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=".MainActivity">
<RelativeLayout

android:padding="20dp"

android:layout_width="match_parent"

android:layout_height="wrap_content">
<TextView

android:textSize="23sp"

android:layout_centerVertical="true"

android:text="＜"

android:layout_width="wrap_content"

android:layout_height="wrap_content" />
<TextView

android:textStyle="bold"

android:textSize="23sp"

android:layout_centerHorizontal="true"

android:text="购物车"

android:layout_width="wrap_content"

android:layout_height="wrap_content" />
<TextView

android:id="@+id/bianji"

android:textSize="20sp"

android:layout_centerVertical="true"

android:layout_alignParentRight="true"

android:text="编辑"

android:layout_width="wrap_content"

android:layout_height="wrap_content" />
</RelativeLayout>
<TextView

android:layout_marginTop="5dp"

android:layout_width="match_parent"

android:layout_height="1dp"

android:background="#D4D4D4"/>
<android.support.v7.widget.RecyclerView

android:id="@+id/recycler_View"

android:layout_width="match_parent"

android:layout_height="0dp"

android:layout_weight="1" />
<RelativeLayout

android:gravity="center_vertical"

android:orientation="horizontal"

android:layout_alignParentBottom="true"

android:layout_width="match_parent"

android:layout_height="wrap_content">
<CheckBox

android:layout_marginLeft="10dp"

android:layout_centerVertical="true"

android:background="@drawable/shopcart_unselected"

android:button="@null"

android:id="@+id/quanxuan"

android:layout_width="wrap_content"

android:layout_height="wrap_content" />
<TextView


android:layout_centerVertical="true"

android:textStyle="bold"

android:layout_marginLeft="40dp"

android:textSize="23sp"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="全选"

/>
<LinearLayout

android:orientation="vertical"

android:layout_centerInParent="true"

android:layout_marginRight="70dp"

android:layout_centerVertical="true"

android:layout_marginLeft="10dp"

android:layout_width="wrap_content"

android:layout_height="wrap_content">
<TextView


android:textColor="#e53e42"

android:id="@+id/total_price"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:textSize="20sp"

android:text="总价 : ¥0元"

/>
<TextView

android:layout_alignBottom="@+id/total_price"

android:id="@+id/total_num"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:textSize="20sp"

android:text="共0件商品"

/>
</LinearLayout>
<TextView

android:id="@+id/quzhifu"

android:layout_centerVertical="true"

android:layout_alignParentRight="true"

android:padding="30dp"

android:gravity="center"

android:textSize="22sp"

android:text="去支付"

android:textColor="#fff"

android:background="#FC7903"

android:layout_width="wrap_content"

android:layout_height="wrap_content" />
<LinearLayout

android:id="@+id/linear_shanchu"

android:visibility="gone"

android:layout_alignParentRight="true"

android:layout_marginLeft="30dp"

android:orientation="horizontal"

android:layout_width="wrap_content"

android:layout_height="wrap_content">
<TextView

android:paddingRight="30dp"

android:paddingLeft="30dp"

android:padding="20dp"

android:gravity="center"

android:textSize="20sp"

android:text="分享宝贝"

android:textColor="#fff"

android:background="#FC7903"

android:layout_width="wrap_content"

android:layout_height="match_parent" />
<TextView

android:paddingRight="30dp"

android:paddingLeft="30dp"

android:padding="20dp"

android:gravity="center"

android:textSize="20sp"

android:text="移到收藏夹"

android:textColor="#fff"

android:background="#FC7903"

android:layout_width="wrap_content"

android:layout_height="match_parent" />
<TextView

android:id="@+id/shanchu"

android:paddingRight="30dp"

android:paddingLeft="30dp"

android:padding="30dp"

android:gravity="center"

android:textSize="20sp"

android:text="删除"

android:textColor="#fff"

android:background="#DC143C"

android:layout_width="wrap_content"

android:layout_height="match_parent" />
</LinearLayout>
</RelativeLayout>
</LinearLayout>

custom_jiajian

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

android:orientation="horizontal"

android:gravity="center_vertical"

android:layout_width="match_parent"

android:layout_height="match_parent">
<Button

android:background="#F2F1F1"

android:textSize="20sp"

android:id="@+id/reverse"

android:text="一"

android:layout_width="40dp"

android:layout_height="40dp" />
<EditText

android:gravity="center"

android:background="#FAFAFA"

android:textStyle="bold"

android:textSize="23sp"

android:layout_width="40dp"

android:layout_height="40dp"

android:text="1"

android:id="@+id/count" />
<Button

android:id="@+id/add"

android:background="#F2F1F1"

android:textSize="25sp"

android:text="+"

android:layout_width="40dp"

android:layout_height="40dp" />
</LinearLayout>

recy_cart_item

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

xmlns:fresco="http://schemas.android.com/apk/res-auto"

android:orientation="vertical"

android:layout_width="match_parent"

android:layout_height="match_parent">
<RelativeLayout

android:padding="5dp"

android:background="#FFFFFF"

android:layout_width="match_parent"

android:layout_height="wrap_content">
<CheckBox

android:layout_centerVertical="true"

android:id="@+id/shop_checkbox"

android:layout_width="50dp"

android:layout_height="50dp" />
<TextView

android:layout_centerVertical="true"

android:layout_marginLeft="35dp"

android:text="良品铺子"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:textSize="23sp"

android:textStyle="bold"

android:id="@+id/shop_name" />
<TextView

android:id="@+id/item_bianji"

android:layout_centerVertical="true"

android:layout_alignParentRight="true"

android:textSize="20sp"

android:text="编辑"

android:layout_width="wrap_content"

android:layout_height="wrap_content" />
</RelativeLayout>
<TextView

android:layout_width="match_parent"

android:layout_height="1dp"

android:background="#D4D4D4"/>
<LinearLayout

android:background="#F2F2F2"

android:gravity="center_vertical"

android:orientation="horizontal"

android:layout_width="match_parent"

android:layout_height="wrap_content">
<CheckBox

android:id="@+id/item_checkbox"

android:layout_width="wrap_content"

android:layout_height="wrap_content" />
<com.facebook.drawee.view.SimpleDraweeView

fresco:failureImage="@mipmap/ic_launcher"

fresco:placeholderImage="@mipmap/ic_launcher"

android:id="@+id/item_face"

android:src="@mipmap/ic_launcher"

android:layout_width="140dp"

android:layout_height="140dp" />
<LinearLayout

android:layout_marginLeft="10dp"

android:orientation="vertical"

android:layout_width="0dp"

android:layout_weight="1"

android:layout_height="wrap_content">
<TextView

android:id="@+id/item_name"

android:textSize="20sp"

android:text="三只松鼠"

android:layout_width="wrap_content"

android:layout_weight="1"

android:layout_height="0dp" />
<TextView

android:textColor="#f00"

android:id="@+id/item_price"

android:textSize="23sp"

android:text="299"

android:layout_width="wrap_content"

android:layout_height="0dp"

android:layout_weight="1" />
<com.bwie.test.utils.CustomJiaJian

android:visibility="gone"

android:id="@+id/custom_jiajian"

android:layout_width="wrap_content"

android:layout_height="0dp"

android:layout_weight="1" />
<TextView

android:textSize="20sp"

android:visibility="gone"

android:id="@+id/item_yansechima"

android:text="颜色 : 黑色 ; 尺码: 29"

android:layout_width="wrap_content"

android:layout_height="wrap_content" />
</LinearLayout>
<!-- <ImageView

android:visibility="gone"

android:id="@+id/item_delete"

android:layout_marginRight="10dp"

android:src="@drawable/shopcart_delete"

android:layout_width="30dp"

android:layout_height="30dp" />-->


<TextView

android:visibility="gone"

android:id="@+id/item_delete"

android:padding="20dp"

android:background="#FC7903"

android:textColor="#fff"

android:textSize="23sp"

android:gravity="center"

android:text="删除"

android:layout_width="wrap_content"

android:layout_height="match_parent" />
</LinearLayout>
<TextView

android:layout_width="match_parent"

android:layout_height="1dp"

android:background="#D4D4D4"/>
</LinearLayout>

MainActivity

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.View;
import android.widget.CheckBox;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;
import com.bwie.test.adapter.RecyAdapter;
import com.bwie.test.bean.CartBean;
import com.bwie.test.myshoppingcart.inter_view.MyViewCallBack;
import com.bwie.test.presenter.MyPresenterCart;
public class MainActivity extends AppCompatActivity implements MyViewCallBack{
private RecyclerView recyclerView;
private TextView total_price;
private TextView total_num;
private CheckBox quanxuan;
private MyPresenterCart myPresenterCart;
private RecyAdapter recyAdapter;
private TextView bianji;
private LinearLayout linear_shanchu;
private TextView quzhifu;
private TextView shanchu;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//隐藏原有标题

getSupportActionBar().hide();
//查找控件

recyclerView = (RecyclerView) findViewById(R.id.recycler_View);
total_price = (TextView) findViewById(R.id.total_price);
total_num = (TextView) findViewById(R.id.total_num);
quanxuan = (CheckBox) findViewById(R.id.quanxuan);
bianji = findViewById(R.id.bianji);
linear_shanchu = findViewById(R.id.linear_shanchu);
quzhifu = findViewById(R.id.quzhifu);
shanchu = findViewById(R.id.shanchu);
bianji.setTag(1);//编辑设置tag

quanxuan.setTag(1);//1为不选中

LinearLayoutManager manager = new LinearLayoutManager(MainActivity.this,LinearLayoutManager
.VERTICAL,false);
myPresenterCart = new MyPresenterCart(this);
recyAdapter = new RecyAdapter(this);
//进入页面查询购物车的数据

myPresenterCart.select();
recyclerView.setLayoutManager(manager);
recyclerView.setAdapter(recyAdapter);
//调用recyAdapter里面的接口,设置 全选按钮 总价 总数量

recyAdapter.setUpdateListener(new RecyAdapter.UpdateListener() {
@Override
public void setTotal(String total, String num, boolean allCheck) {
//设置ui的改变

total_num.setText("共"+num+"件商品");//总数量

total_price.setText("总价 :¥"+total+"元");//总价

if(allCheck){
quanxuan.setTag(2);
quanxuan.setBackgroundResource(R.drawable.shopcart_selected);
}else{
quanxuan.setTag(1);
quanxuan.setBackgroundResource(R.drawable.shopcart_unselected);
}
quanxuan.setChecked(allCheck);
}
});
//这里只做ui更改, 点击全选按钮,,调到adapter里面操作

quanxuan.setOnClickListener(new View.OnClickListener() {
@Override

public void onClick(View v) {
//调用adapter里面的方法 ,,把当前quanxuan状态传递过去

int tag = (int) quanxuan.getTag();
if(tag==1){
quanxuan.setTag(2);
quanxuan.setBackgroundResource(R.drawable.shopcart_selected);
}else{
quanxuan.setTag(1);
quanxuan.setBackgroundResource(R.drawable.shopcart_unselected);
}
recyAdapter.quanXuan(quanxuan.isChecked());
}
});
//点击批量删除的按钮

shanchu.setOnClickListener(new View.OnClickListener() {
@Override

public void onClick(View view) {
recyAdapter.shanChu();
}
});
//点击编辑按钮,

bianji.setOnClickListener(new View.OnClickListener() {
@Override

public void onClick(View view) {
int tag = (int) bianji.getTag();
if(tag==1){
bianji.setText("完成");
bianji.setTag(2);
quzhifu.setVisibility(View.GONE);
linear_shanchu.setVisibility(View.VISIBLE);
}else{
bianji.setText("编辑");
bianji.setTag(1);
quzhifu.setVisibility(View.VISIBLE);
linear_shanchu.setVisibility(View.GONE);
}
}
});
}
@Override
public void success(CartBean cartBean) {
if(cartBean!=null) {
//System.out.println(cartBean.getData().get(0).getList().get(0).getTitle());

//将返回的数据 添加到适配器里

recyAdapter.add(cartBean);
}
}
@Override
public void failure() {
System.out.println("网不好");
runOnUiThread(new Runnable() {
@Override
public void run() {
Toast.makeText(MainActivity.this, "网有点慢", Toast.LENGTH_SHORT).show();
}
});
}
@Override
protected void onDestroy() {
super.onDestroy();
//调用p层数据

myPresenterCart.detach();
}
}

inter_view文件夹下MyViewCallBack

import com.bwie.test.bean.CartBean;
public interface MyViewCallBack {
public void success(CartBean cartBean);
public void failure();
}

MyViewCallBack2

import com.bwie.test.bean.DeleteBean;
public interface MyViewCallBack2 {
public void success(DeleteBean deleteBean);
public void failure();
}

model文件夹下MyModelCart

import com.bwie.test.bean.CartBean;
import com.bwie.test.model.inter_model.MyModelCallBack;
import com.bwie.test.utils.APIFactory;
import com.bwie.test.utils.AbstractObserver;
import java.util.HashMap;
import java.util.Map;
public class MyModelCart {
public void select(final MyModelCallBack myModelCallBack) {
final Map<String,String> map = new HashMap<>();
map.put("source","android");
map.put("uid","71");
//调用apifactory里面的方法

APIFactory.getInstance().select("product/getCarts", map, new AbstractObserver<CartBean>() {
@Override
public void onSuccess(CartBean cartBean) {
myModelCallBack.success(cartBean);
}
@Override
public void onFailure() {
myModelCallBack.failure();
}
});
}
}

MyModelDelete

import com.bwie.test.bean.DeleteBean;
import com.bwie.test.model.inter_model.MyModelCallBack2;
import com.bwie.test.utils.APIFactory;
import com.bwie.test.utils.AbstractObserver;
import java.util.HashMap;
import java.util.Map;
public class MyModelDelete {
public void delete(String pid,final MyModelCallBack2 myModelCallBack2) {
final Map<String,String> map = new HashMap<>();
map.put("source","android");
map.put("pid",pid);
map.put("uid","71");
//调用apifactory里面的方法

APIFactory.getInstance().delete("/product/deleteCart", map, new AbstractObserver<DeleteBean>() {
@Override

public void onSuccess(DeleteBean deleteBean) {
myModelCallBack2.success(deleteBean);
}
@Override

public void onFailure() {
myModelCallBack2.failure();
}
});
}
}

inter_model文件夹下MyModelCallBack

import com.bwie.test.bean.CartBean;
public interface MyModelCallBack {
public void success(CartBean cartBean);
public void failure();
}

MyModelCallBack2

import com.bwie.test.bean.DeleteBean;
public interface MyModelCallBack2 {
public void success(DeleteBean deleteBean);
public void failure();
}

presenter文件夹下MyPresenterCart

import com.bwie.test.bean.CartBean;
import com.bwie.test.model.MyModelCart;
import com.bwie.test.model.inter_model.MyModelCallBack;
import com.bwie.test.myshoppingcart.inter_view.MyViewCallBack;
public class MyPresenterCart {
MyModelCart myModelCart;
MyViewCallBack myViewCallBack;
public MyPresenterCart(MyViewCallBack myViewCallBack) {
this.myViewCallBack = myViewCallBack;
this.myModelCart = new MyModelCart();
}
public void select() {
myModelCart.select(new MyModelCallBack() {
@Override

public void success(CartBean cartBean) {
myViewCallBack.success(cartBean);
}
@Override

public void failure() {
myViewCallBack.failure();
}
});
}
public void detach() {
this.myViewCallBack = null;
}
}

MyPresenterDelete

import com.bwie.test.bean.DeleteBean;
import com.bwie.test.model.MyModelDelete;
import com.bwie.test.model.inter_model.MyModelCallBack2;
import com.bwie.test.myshoppingcart.inter_view.MyViewCallBack2;
public class MyPresenterDelete {
MyModelDelete myModelDelete;
MyViewCallBack2 myViewCallBack2;
public MyPresenterDelete(MyViewCallBack2 myViewCallBack2) {
this.myViewCallBack2 = myViewCallBack2;
this.myModelDelete = new MyModelDelete();
}
public void delete(String pid) {
myModelDelete.delete(pid,new MyModelCallBack2() {
@Override

public void success(DeleteBean deleteBean) {
myViewCallBack2.success(deleteBean);
}
@Override

public void failure() {
myViewCallBack2.failure();
}
});
}
public void detach() {
this.myViewCallBack2 = null;
}
}

adapter文件夹下RecyAdapter

import android.content.Context;
import android.content.DialogInterface;
import android.net.Uri;
import android.support.annotation.NonNull;
import android.support.v7.app.AlertDialog;
import android.support.v7.widget.RecyclerView;
import android.view.View;
import android.view.ViewGroup;
import android.widget.CheckBox;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import com.bwie.test.bean.CartBean;
import com.bwie.test.bean.DeleteBean;
import com.bwie.test.myshoppingcart.R;
import com.bwie.test.myshoppingcart.inter_view.MyViewCallBack;
import com.bwie.test.myshoppingcart.inter_view.MyViewCallBack2;
import com.bwie.test.presenter.MyPresenterCart;
import com.bwie.test.presenter.MyPresenterDelete;
import com.bwie.test.utils.CustomJiaJian;
import com.facebook.drawee.backends.pipeline.Fresco;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class RecyAdapter extends RecyclerView.Adapter<RecyAdapter.MyViewHolder> implements
MyViewCallBack2, MyViewCallBack{
MyPresenterCart myPresenterCart;
//创建大的集合

private List<CartBean.DataBean.ListBean> list;
//存放商家的id和商家的名称的map集合

private Map<String,String> map = new HashMap<>();
MyPresenterDelete myPresenterDelete ;
Context context;
public RecyAdapter(Context context) {
this.context = context;
myPresenterCart = new MyPresenterCart(this);
myPresenterDelete = new MyPresenterDelete(this);
//初始化fresco

Fresco.initialize(context);
}
public void add(CartBean cartBean) {
if(list==null){
list = new ArrayList<>();
}
if(cartBean!=null) {
for (CartBean.DataBean shop : cartBean.getData()) {
map.put(shop.getSellerid(), shop.getSellerName());
//第二层遍历里面的商品

for (int i = 0; i < shop.getList().size(); i++) {
//添加到list集合里

list.add(shop.getList().get(i));
}
}
//调用方法 设置显示或隐藏 商铺名

setFirst(list);
}notifyDataSetChanged();
}
/**

* 设置数据源,控制是否显示商家

* */

private void setFirst(List<CartBean.DataBean.ListBean> list) {
if(list.size()>0){
list.get(0).setIsFirst(1);
//从第二条开始遍历

for (int i=1;i<list.size();i++){
//如果和前一个商品是同一家商店的

if (list.get(i).getSellerid() == list.get(i-1).getSellerid()){
//设置成2不显示商铺

list.get(i).setIsFirst(2);
}else{//设置成1显示商铺

list.get(i).setIsFirst(1);
//如果当前条目选中,把当前的商铺也选中

if (list.get(i).isItem_check()==true){
list.get(i).setShop_check(list.get(i).isItem_check());
}
}
}
}
}
@Override

public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = View.inflate(context, R.layout.recy_cart_item,null);
MyViewHolder myViewHolder = new MyViewHolder(view);
return myViewHolder;
}
@Override

public void onBindViewHolder(final MyViewHolder holder, final int position) {
/**

* 设置商铺的 shop_checkbox和商铺的名字 显示或隐藏

* */

if(list.get(position).getIsFirst()==1){
//显示商家

holder.shop_checkbox.setVisibility(View.VISIBLE);
holder.shop_name.setVisibility(View.VISIBLE);
//设置shop_checkbox的选中状态

holder.shop_checkbox.setChecked(list.get(position).isShop_check());
holder.shop_name.setText(map.get(String.valueOf(list.get(position).getSellerid()))+" ＞");
}else{//2

//隐藏商家

holder.shop_name.setVisibility(View.GONE);
holder.shop_checkbox.setVisibility(View.GONE);
}
//拆分images字段

String[] split = list.get(position).getImages().split("\|");
//设置商品的图片

holder.item_face.setImageURI(Uri.parse(split[0]));
// ImageLoader.getInstance().displayImage(split[0],holder.item_face);

//控制商品的item_checkbox,,根据字段改变

holder.item_checkbox.setChecked(list.get(position).isItem_check());
holder.item_name.setText(list.get(position).getTitle());
holder.item_price.setText(list.get(position).getPrice()+"");
//调用customjiajian里面的方法设置 加减号中间的数字

holder.customJiaJian.setEditText(list.get(position).getNum());
holder.item_bianji.setTag(1);
//点击item编辑才显示 自定义加减框

holder.item_bianji.setOnClickListener(new View.OnClickListener() {
@Override

public void onClick(View view) {
int tag= (int) holder.item_bianji.getTag();
if(tag==1) {
//加减号显示

holder.item_bianji.setText("完成");
holder.customJiaJian.setVisibility(View.VISIBLE);
//商品的名称隐藏

holder.item_name.setVisibility(View.GONE);
holder.item_yansechima.setVisibility(View.VISIBLE);
holder.item_price.setVisibility(View.GONE);
holder.item_delete.setVisibility(View.VISIBLE);
holder.item_bianji.setTag(2);
}else{
//相反的 隐藏的显示,显示的隐藏

//加减号显示

holder.item_bianji.setText("编辑");
holder.customJiaJian.setVisibility(View.GONE);
//商品的名称隐藏

holder.item_name.setVisibility(View.VISIBLE);
holder.item_yansechima.setVisibility(View.GONE);
holder.item_price.setVisibility(View.VISIBLE);
holder.item_delete.setVisibility(View.GONE);
holder.item_bianji.setTag(1);
}
}
});
//设置点击多选框

holder.shop_checkbox.setOnClickListener(new View.OnClickListener() {
@Override

public void onClick(View v) {
//先改变数据源中的shop_check

list.get(position).setShop_check(holder.shop_checkbox.isChecked());
for (int i=0;i<list.size();i++){
//如果是同一家商铺的 都给成相同状态

if(list.get(position).getSellerid()==list.get(i).getSellerid()){
//当前条目的选中状态 设置成 当前商铺的选中状态

list.get(i).setItem_check(holder.shop_checkbox.isChecked());
}
}
//刷新适配器

notifyDataSetChanged();
//调用求和的方法

sum(list);
}
});
//商品的item_checkbox点击事件,控制商铺的shop_checkbox

holder.item_checkbox.setOnClickListener(new View.OnClickListener() {
@Override

public void onClick(View v) {
//先改变数据源中的item_checkbox

list.get(position).setItem_check(holder.item_checkbox.isChecked());
//反向控制商铺的shop_checkbox

for (int i=0;i<list.size();i++){
for (int j=0;j<list.size();j++){
//如果两个商品是同一家店铺的 并且 这两个商品的item_checkbox选中状态不一样

if(list.get(i).getSellerid()==list.get(j).getSellerid() && !list.get(j)
.isItem_check()){
//就把商铺的shop_checkbox改成false

list.get(i).setShop_check(false);
break;
}else{
//同一家商铺的商品 选中状态都一样,就把商铺shop_checkbox状态改成true

list.get(i).setShop_check(true);
}
}
}
//更新适配器

notifyDataSetChanged();
//调用求和的方法

sum(list);
}
});
//删除条目的点击事件

holder.item_delete.setOnClickListener(new View.OnClickListener() {
@Override

public void onClick(View v) {
list.remove(position);//移除集合中的当前数据

//删除完当前的条目 重新判断商铺的显示隐藏

setFirst(list);
//调用重新求和

sum(list);
notifyDataSetChanged();
}
});
//加减号的监听,

holder.customJiaJian.setCustomListener(new CustomJiaJian.CustomListener() {
@Override

public void jiajian(int count) {
//改变数据源中的数量

list.get(position).setNum(count);
notifyDataSetChanged();
sum(list);
}
@Override

//输入值 求总价

public void shuRuZhi(int count) {
list.get(position).setNum(count);
notifyDataSetChanged();
sum(list);
}
});
}
//批量删除的按钮

public void shanChu() {
//存储删除的id

final List<Integer> delete_listid = new ArrayList<>();
for (int i=0;i<list.size();i++){
if(list.get(i).isItem_check()){
//将要删除的pid添加到这个集合里

delete_listid.add(list.get(i).getPid());
}
}
if (delete_listid.size()==0){
//如果没有要删除的,就吐司提示

Toast.makeText(context, "请选中至少一个商品后再删除", Toast.LENGTH_SHORT).show();
return;
}
//弹框

final AlertDialog.Builder dialog = new AlertDialog.Builder(context);
dialog.setTitle("操作提示");
dialog.setMessage("你确定要删除这"+delete_listid.size()+"个商品?");
dialog.setPositiveButton("确定", new DialogInterface.OnClickListener() {
@Override

public void onClick(DialogInterface dialogInterface, int i) {
//使用接口删除

String a
= "";
for(int j=0;j<delete_listid.size();j++) {
Integer integer = delete_listid.get(j);
String pid = String.valueOf(integer);
myPresenterDelete.delete(pid);
// list.remove(j);

}
//
Toast.makeText(context, a,Toast.LENGTH_SHORT).show();

}
}).setNegativeButton("取消", new DialogInterface.OnClickListener() {
@Override

public void onClick(DialogInterface dialogInterface, int i) {
dialogInterface.cancel();
}
}).create().show();
}
//view层调用这个方法, 点击quanxuan按钮的操作

public void quanXuan(boolean checked) {
for (int i=0;i<list.size();i++){
list.get(i).setShop_check(checked);
list.get(i).setItem_check(checked);
}
notifyDataSetChanged();
sum(list);
}
private void sum(List<CartBean.DataBean.ListBean> list) {
int totalNum = 0;
float totalMoney = 0.0f;
boolean allCheck = true;
for (int i=0;i<list.size();i++){
if (list.get(i).isItem_check()){
totalNum += list.get(i).getNum();
totalMoney += list.get(i).getNum() * list.get(i).getPrice();
}else{
//如果有个未选中,就标记为false

allCheck = false;
}
}
//接口回调出去 把总价 总数量 和allcheck 传给view层

updateListener.setTotal(totalMoney+"",totalNum+"",allCheck);
}
@Override

public int getItemCount() {
return list==null?0:list.size();
}
@Override

public void success(DeleteBean deleteBean) {
//调用第一个presenter的方法 重新查询数据

myPresenterCart.select();
}
@Override

public void success(CartBean cartBean) {
list.clear();
add(cartBean);
}
@Override

public void failure() {
System.out.println("网不好");
Toast.makeText(context, "adapter网有点慢", Toast.LENGTH_SHORT).show();
}
public static class MyViewHolder extends RecyclerView.ViewHolder{
private final CheckBox shop_checkbox;
private final TextView shop_name;
private final CheckBox item_checkbox;
private final TextView item_name;
private final TextView item_price;
private final CustomJiaJian customJiaJian;
//private final ImageView item_delete;

private final TextView item_delete;
private final ImageView item_face;
private final TextView item_bianji;
private final TextView item_yansechima;
public MyViewHolder(View itemView) {
super(itemView);
//拿到控件

shop_checkbox = (CheckBox) itemView.findViewById(R.id.shop_checkbox);
shop_name = (TextView) itemView.findViewById(R.id.shop_name);
item_checkbox = (CheckBox) itemView.findViewById(R.id.item_checkbox);
item_name = (TextView) itemView.findViewById(R.id.item_name);
item_price = (TextView) itemView.findViewById(R.id.item_price);
customJiaJian = (CustomJiaJian) itemView.findViewById(R.id.custom_jiajian);
//item_delete = (ImageView) itemView.findViewById(R.id.item_delete);

item_delete = (TextView) itemView.findViewById(R.id.item_delete);
item_face = (ImageView) itemView.findViewById(R.id.item_face);
item_bianji = itemView.findViewById(R.id.item_bianji);
item_yansechima = itemView.findViewById(R.id.item_yansechima);
}
}
UpdateListener updateListener;
public void setUpdateListener(UpdateListener updateListener){
this.updateListener = updateListener;
}
//接口

public interface UpdateListener{
public void setTotal(String total,String num,boolean allCheck);
}
}

utils文件夹下CustomJiaJian

import android.content.Context;
import android.support.annotation.Nullable;
import android.util.AttributeSet;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.Toast;
import com.bwie.test.myshoppingcart.R;
public class CustomJiaJian extends LinearLayout{
private Button reverse;
private Button add;
private EditText countEdit;
private int mCount =1;
public CustomJiaJian(Context context) {
super(context);
}
public CustomJiaJian(final Context context, @Nullable AttributeSet attrs) {
super(context, attrs);
View view = View.inflate(context, R.layout.custom_jiajian,this);
//查找控件

reverse = (Button) view.findViewById(R.id.reverse);
add = (Button) view.findViewById(R.id.add);
countEdit = (EditText) view.findViewById(R.id.count);
reverse.setOnClickListener(new OnClickListener() {
@Override

public void onClick(View v) {
String content = countEdit.getText().toString().trim();
int count = Integer.valueOf(content);
if(count>1){
mCount = count-1;
countEdit.setText(mCount+"");
//回调给adapter里面

if(customListener!=null){
customListener.jiajian(mCount);
}
}else{
Toast.makeText(context, "最小数量为1", Toast.LENGTH_SHORT).show();
}
}
});
add.setOnClickListener(new OnClickListener() {
@Override

public void onClick(View v) {
String content = countEdit.getText().toString().trim();
int count = Integer.valueOf(content)+1;
mCount = count;
countEdit.setText(mCount+"");
//接口回调给adapter

if(customListener!=null){
customListener.jiajian(mCount);
}
}
});
}
public CustomJiaJian(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
}
CustomListener customListener;
public void setCustomListener(CustomListener customListener){
this.customListener = customListener;
}
//加减的接口

public interface CustomListener{
public void jiajian(int count);
public void shuRuZhi(int count);
}
public void setEditText(int num) {
if(countEdit!=null){
countEdit.setText(num+"");
}
}
}

AbstractObserver

import com.google.gson.Gson;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import io.reactivex.Observer;
import io.reactivex.disposables.Disposable;
public abstract class AbstractObserver<T> implements Observer<String>{
//不需要下面重写的四个方法,只需要自己写的两个抽象方法

public abstract void onSuccess(T t);
public abstract void onFailure();
@Override

public void onSubscribe(Disposable d) {
}
@Override

public void onNext(String result) {
//这里的s是请求网络传回来的string字符串

Type type = getClass().getGenericSuperclass();
Type[] types = ((ParameterizedType) type).getActualTypeArguments();
Class clazz = (Class) types[0];//强转成类对象

//使用gson解析

Gson gson = new Gson();
T t = (T) gson.fromJson(result,clazz);
//调用抽象方法onSuccess

onSuccess(t);
}
@Override

public void onError(Throwable e) {
try {
onFailure();
}catch (Exception e1){
e.printStackTrace();
}
}
@Override

public void onComplete() {
}
}

APIFactory

import java.util.Map;
import io.reactivex.Observer;
import io.reactivex.android.schedulers.AndroidSchedulers;
import io.reactivex.schedulers.Schedulers;
public class APIFactory {
private static APIFactory factory = null;
public static APIFactory getInstance(){
if(factory==null){
synchronized (APIFactory.class){
if(factory==null){
factory = new APIFactory();
}
}
}
return factory;
}
//查询购物车的方法

public void select(String url, Map<String,String> map, Observer<String> observer){
//调用retrofit工具类

RetrofitUtils.getInstance().select(url,map)
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(observer);
}
//删除购物车的方法

public void delete(String url, Map<String,String> map, Observer<String> observer){
//调用retrofit工具类

RetrofitUtils.getInstance().select(url,map)
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(observer);
}
}

IGetService

import java.util.Map;
import io.reactivex.Observable;
import retrofit2.http.GET;
import retrofit2.http.QueryMap;
import retrofit2.http.Url;
public interface IGetService {
//查询购物车,

@GET

Observable<String> select(@Url String url, @QueryMap Map<String,String> map);
//删除购物车

@GET

Observable<String> delete(@Url String url, @QueryMap Map<String,String> map);
//更新购物车

@GET

Observable<String> update(@Url String url,@QueryMap Map<String,String> map);
}

OkHttpUtils

import java.util.concurrent.TimeUnit;
import okhttp3.OkHttpClient;
public class OkHttpUtils {
private static OkHttpClient client = null;
public static OkHttpClient getInstance(){
if(client==null){
synchronized (OkHttpUtils.class){
if(client==null){
client = new OkHttpClient.Builder()
.connectTimeout(2000, TimeUnit.SECONDS)
.writeTimeout(2000,TimeUnit.SECONDS)
.readTimeout(2000, TimeUnit.SECONDS)
.build();
}
}
}
return client;
}
}

RetrofitUtils

import retrofit2.Retrofit;
import retrofit2.adapter.rxjava2.RxJava2CallAdapterFactory;
import retrofit2.converter.scalars.ScalarsConverterFactory;
public class RetrofitUtils {
private static IGetService service = null;

//单例模式

public static IGetService getInstance(){
if(service==null){
synchronized (RetrofitUtils.class){
if(service==null){
Retrofit retrofit = new Retrofit.Builder()
.baseUrl("https://www.zhaoapi.cn")
.addConverterFactory(ScalarsConverterFactory.create())
.addCallAdapterFactory(RxJava2CallAdapterFactory.create())
.client(OkHttpUtils.getInstance())
.build();
service = retrofit.create(IGetService.class);
}
}
}
return service;
}
}

bean文件夹下CartBean

import java.util.List;
public class CartBean {


private String code;
private String msg;
private List<DataBean> data;
public String getCode() {
return code;
}
public void setCode(String code) {
this.code = code;
}
public String getMsg() {
return msg;
}
public void setMsg(String msg) {
this.msg = msg;
}
public List<DataBean> getData() {
return data;
}
public void setData(List<DataBean> data) {
this.data = data;
}
public static class DataBean {


private boolean groupChecked;
public boolean isGroupChecked() {
return groupChecked;
}
public void setGroupChecked(boolean groupChecked) {
this.groupChecked = groupChecked;
}
private String sellerName;
private String sellerid;
private List<ListBean> list;
public String getSellerName() {
return sellerName;
}
public void setSellerName(String sellerName) {
this.sellerName = sellerName;
}
public String getSellerid() {
return sellerid;
}
public void setSellerid(String sellerid) {
this.sellerid = sellerid;
}
public List<ListBean> getList() {
return list;
}
public void setList(List<ListBean> list) {
this.list = list;
}
public static class ListBean {


private double bargainPrice;
private String createtime;
private String detailUrl;
private String images;
private int num;
private int pid;
private double price;
private int pscid;
private int selected;//当前的商品子条目是否选中....1表示选中,0未选中

private int sellerid;
private String subhead;
private String title;
//自己添加的三个字段

private int isFirst = 1;//1为显示商铺

private boolean item_check;//每个商品的选中状态

private boolean shop_check;//商店的选中状态


public int getIsFirst() {
return isFirst;
}
public void setIsFirst(int isFirst) {
this.isFirst = isFirst;
}
public boolean isItem_check() {
return item_check;
}
public void setItem_check(boolean item_check) {
this.item_check = item_check;
}
public boolean isShop_check() {
return shop_check;
}
public void setShop_check(boolean shop_check) {
this.shop_check = shop_check;
}
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;
}
}
}
}

DeleteBean

public class DeleteBean {


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;
}
}