购物车2

MainActivity:
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.ExpandableListView;
import android.widget.TextView;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import bawei.com.gouwuche.R;
import bawei.com.gouwuche.adapter.ExpanListAdapter;
import bawei.com.gouwuche.bean.BeanDeleteCart;
import bawei.com.gouwuche.bean.BeanQueryCart;
import bawei.com.gouwuche.presenter.Presenter;
import de.greenrobot.event.EventBus;
import de.greenrobot.event.Subscribe;
import de.greenrobot.event.ThreadMode;

public class MainActivity extends AppCompatActivity implements ViewInterface.ViewQueryCart, View.OnClickListener, ViewInterface.ViewDeleteCart {

    List<BeanQueryCart.DataBean> list = new ArrayList<>();
    private ExpandableListView edv;
    private ExpanListAdapter expanListAdapter;
    private CheckBox box;
    private TextView priceTV;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //注册事件
        EventBus.getDefault().register(this);
        initView();
    }

    /*
    * 初始化
    * */
    private void initView() {
        Presenter presenter = new Presenter((ViewInterface.ViewQueryCart) this);
        presenter.presenQueryCart("10794");

        //找到控件
        edv = findViewById(R.id.main_ebv);
        box = findViewById(R.id.main_box);
        priceTV = findViewById(R.id.main_price);
        Button shan = findViewById(R.id.main_shan);

        //实例化适配器
        expanListAdapter = new ExpanListAdapter(this, list);
        //去掉箭头
        edv.setGroupIndicator(null);

        //点击事件
        box.setOnClickListener(this);
        shan.setOnClickListener(this);
    }


    /*
    * 重写查询购物车方法
    * */
    @Override
    public void sueeccQueryCart(BeanQueryCart queryCart) {
        if (queryCart == null) {
            Toast.makeText(this, "购物车是空的", Toast.LENGTH_SHORT).show();
            return;
        }

        String code = queryCart.getCode();
        if (code.equals("0")) {
            List<BeanQueryCart.DataBean> data = queryCart.getData();
            list.addAll(data);

            edv.setAdapter(expanListAdapter);
            //默认展开
            for (int i = 0; i < expanListAdapter.getGroupCount(); i++) {
                edv.expandGroup(i);
            }
        }

    }

    @Override
    public void errorQueryCart(String err) {
        Log.d("哈哈", "errorQueryCart: " + err);
    }

    /*
    * 重写删除购物车的方法
    * */
    @Override
    public void sueeccDeleteCart(BeanDeleteCart deleteCart) {
        String code = deleteCart.getCode();
        if (code.equals("0")) {
            //清空集合
            list.clear();
            //删除时再次查询购物车
            Presenter presenter1 = new Presenter((ViewInterface.ViewQueryCart) this);//查询
            presenter1.presenQueryCart("10794");

            //删除时调用计算方法
            jiSuan();

        }
    }

    @Override
    public void errorDeleteCart(String err) {
        Log.d("哈哈", "errorDeleteCart: "+err);
    }

    /*
    *点击事件
    * */
    @Override
    public void onClick(View view) {

        switch (view.getId()) {
            case R.id.main_box:
                //获取购物车底部复选框的状态
                boolean checked = box.isChecked();
                //遍历父复选框
                for (BeanQueryCart.DataBean dataBean : list) {
                    dataBean.setBox(checked);
                    //遍历子复选框
                    for (BeanQueryCart.DataBean.ListBean listBean : dataBean.getList()) {
                        listBean.setBoxChild(checked);
                    }
                }
                //调用计算的方法
                jiSuan();

                //刷新适配器
                expanListAdapter.notifyDataSetChanged();

                break;

            case R.id.main_shan:
                Presenter presenter = new Presenter((ViewInterface.ViewDeleteCart) this);
                Map<String, String> map = new HashMap<>();
                map.put("uid", "10794");
                for (BeanQueryCart.DataBean dataBean : list) {
                    for (BeanQueryCart.DataBean.ListBean listBean : dataBean.getList()) {
                        boolean boxChild = listBean.getBoxChild();
                        if (boxChild) {
                            String pid = listBean.getPid();
                            map.put("pid", pid);
                        }
                    }
                }
                presenter.presenDeleteCart(map);

                if (list.size()==1){
                    list.clear();
                }

                expanListAdapter.notifyDataSetChanged();
                break;


        }

    }


    /*
* 处理事件
* Subscribe  1:在主线程里 2:接收传递过来的值
* */
    @Subscribe(threadMode = ThreadMode.MainThread, sticky = true)
    public void eventBus(String user) {
        boolean flg = true;
        if (user.equals("哈哈")) {
            Log.d("哈哈", "eventBus: " + "aaaa");
            //遍历父复选框
            for (BeanQueryCart.DataBean dataBean : list) {
                boolean box = dataBean.getBox();
                dataBean.setBox(box);
                if (!box) {
                    flg = false;
                }
                //遍历子复选框
                for (BeanQueryCart.DataBean.ListBean listBean : dataBean.getList()) {
                    boolean boxChild = listBean.getBoxChild();
                    listBean.setBoxChild(boxChild);
                    if (!boxChild) {
                        flg = false;
                    }
                }
            }
            //给购物车底部CheckBox赋值
            box.setChecked(flg);
            //调用计算的方法
            jiSuan();
            //刷新适配器
            expanListAdapter.notifyDataSetChanged();

        }

    }


    /*
    * 计算的方法
    * */
    public void jiSuan() {
        double priceCount = 0;
        //遍历父复选框
        for (BeanQueryCart.DataBean dataBean : list) {
            //获取子复选框
            List<BeanQueryCart.DataBean.ListBean> listBeans = dataBean.getList();
            //遍历子复选框
            for (BeanQueryCart.DataBean.ListBean listBean : listBeans) {
                //获取子复选框
                boolean boxChild = listBean.getBoxChild();
                if (boxChild) {
                    //获取价格
                    String price = listBean.getPrice();
                    //获取数量
                    String num = listBean.getNum();
                    //转换
                    Double aDouble = Double.valueOf(price);
                    Integer integer = Integer.valueOf(num);
                    priceCount += aDouble * integer;

                }
            }
        }

        priceTV.setText(priceCount + "");

    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        //解除注册
        EventBus.getDefault().unregister(this);
    }


}

适配器:
import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseExpandableListAdapter;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.ImageView;
import android.widget.TextView;
import com.bumptech.glide.Glide;
import java.util.List;
import bawei.com.gouwuche.R;
import bawei.com.gouwuche.bean.BeanQueryCart;
import de.greenrobot.event.EventBus;

/**
 * Created by Think on 2018/5/3.
 */

public class ExpanListAdapter extends BaseExpandableListAdapter {

    private final Context context;
    private final List<BeanQueryCart.DataBean> list;

    public ExpanListAdapter(Context context, List<BeanQueryCart.DataBean> list) {
        this.context = context;
        this.list = list;
    }

    //返回父的长度
    @Override
    public int getGroupCount() {
        return list.size();
    }

    //返回子的长度
    @Override
    public int getChildrenCount(int i) {
        return list.get(i).getList().size();
    }

    //返回每个父的item
    @Override
    public Object getGroup(int i) {
        return list.get(i);
    }

    //返回每个子的item
    @Override
    public Object getChild(int i, int i1) {
        return list.get(i).getList().get(i1);
    }

    //返回每个父的id
    @Override
    public long getGroupId(int i) {
        return i;
    }

    //返回每个字的id
    @Override
    public long getChildId(int i, int i1) {
        return i1;
    }


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

    //返回父的视图
    @Override
    public View getGroupView(final int i, boolean b, View view, ViewGroup viewGroup) {
        FuViewHodel fu = null;
        if (view == null) {
            //找到布局文件
            view = View.inflate(context, R.layout.adapterfu, null);
            //找到控件
            TextView tv = view.findViewById(R.id.adapterfu_tv);
            CheckBox box = view.findViewById(R.id.adapterfu_box);
            //把控件放入到子的优化类中
            fu = new FuViewHodel(tv, box);
            //放到容器中
            view.setTag(fu);
        } else {
            fu = (FuViewHodel) view.getTag();
        }

        //赋值
        fu.tv.setText(list.get(i).getSellerName());
        fu.box.setChecked(list.get(i).getBox());

        //点击事件
        final FuViewHodel finalFu = fu;
        fu.box.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                //获取当前点击CheckBox的状态
                boolean checked = finalFu.box.isChecked();
                //给JAVABean对象里的复选框赋值
                list.get(i).setBox(checked);
                //找到子的复选框
                List<BeanQueryCart.DataBean.ListBean> listBeans = ExpanListAdapter.this.list.get(i).getList();
                //遍历子复选框
                for (BeanQueryCart.DataBean.ListBean listBean : listBeans) {
                    listBean.setBoxChild(checked);
                }

                String aa="哈哈";
                EventBus.getDefault().post(aa);

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

        return view;
    }

    //返回子的视图
    @Override
    public View getChildView(final int i, final int i1, boolean b, View view, ViewGroup viewGroup) {
        ZiViewHodel zi = null;
        if (view == null) {
            //找到布局文件
            view = View.inflate(context, R.layout.adapterzi, null);
            //找到控件
            ImageView iv = view.findViewById(R.id.adapterzi_iv);
            TextView title = view.findViewById(R.id.adapterzi_title);
            TextView subhead = view.findViewById(R.id.adapterzi_subhead);
            TextView price = view.findViewById(R.id.adapterzi_price);
            Button jia = view.findViewById(R.id.adapterzi_jia);
            Button jian = view.findViewById(R.id.adapterzi_jian);
            TextView count = view.findViewById(R.id.adapterzi_count);
            CheckBox box = view.findViewById(R.id.adapterzi_box);
            //把控件放到优化类中
            zi = new ZiViewHodel(iv, title, subhead, price, jia, jian, count, box);
            //放到容器中
            view.setTag(zi);
        } else {
            zi = (ZiViewHodel) view.getTag();
        }

        //获取数据
        String images = list.get(i).getList().get(i1).getImages();//图片
        //拆分
        String[] split = images.split("\\|");
        String s = split[0];

        String title = list.get(i).getList().get(i1).getTitle();//标题
        String subhead = list.get(i).getList().get(i1).getSubhead();//内容
        String price = list.get(i).getList().get(i1).getPrice();//价格
        String num = list.get(i).getList().get(i1).getNum();//数量
        final boolean boxChild = list.get(i).getList().get(i1).getBoxChild();

        //赋值
        Glide.with(context).load(s).into(zi.iv);
        zi.title.setText(title);
        zi.subhead.setText(subhead);
        zi.price.setText(price);
        zi.count.setText(num);
        zi.box.setChecked(boxChild);

        //复选框的点击事件
        final ZiViewHodel finalZi = zi;
        zi.box.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                //获取当前点击CheckBox的状态
                boolean checked = finalZi.box.isChecked();
                list.get(i).getList().get(i1).setBoxChild(checked);
                List<BeanQueryCart.DataBean.ListBean> listBeans = ExpanListAdapter.this.list.get(i).getList();
                boolean flg=true;
                for (BeanQueryCart.DataBean.ListBean listBean : listBeans) {
                    boolean boxChild1 = listBean.getBoxChild();
                    if (!boxChild1) {
                        flg=false;
                    }
                }
                list.get(i).setBox(flg);

                String aa="哈哈";
                EventBus.getDefault().post(aa);

                notifyDataSetChanged();
            }

        });

        /*
        * 加减点击事件
        * */

        //加的点击事件
        zi.jia.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

            }
        });


        //减的点击事件
        zi.jian.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

            }
        });
        return view;
    }

    @Override
    public boolean isChildSelectable(int i, int i1) {
        return false;
    }


    //父的优化类
    class FuViewHodel {
        public TextView tv;
        public CheckBox box;

        public FuViewHodel(TextView tv, CheckBox box) {
            this.tv = tv;
            this.box = box;
        }
    }

    /*
    * 子的优化类
    * */
    class ZiViewHodel {
        public ImageView iv;
        public TextView title;
        public TextView subhead;
        public TextView price;
        public Button jia;
        public Button jian;
        public TextView count;
        public CheckBox box;

        public ZiViewHodel(ImageView iv, TextView title, TextView subhead, TextView price, Button jia, Button jian, TextView count, CheckBox box) {
            this.iv = iv;
            this.title = title;
            this.subhead = subhead;
            this.price = price;
            this.jia = jia;
            this.jian = jian;
            this.count = count;
            this.box = box;
        }
    }

}
布局文件：
mainActivity布局:
<?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="bawei.com.gouwuche.view.MainActivity">

    <ExpandableListView
        android:id="@+id/main_ebv"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1"
        />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="60dp"
        android:orientation="horizontal">
        <CheckBox
            android:id="@+id/main_box"
            android:layout_gravity="center_vertical"
            android:layout_width="0dp"
            android:layout_weight="1"
            android:layout_height="wrap_content" />
        <TextView
            android:id="@+id/main_price"
            android:layout_gravity="center_vertical"
            android:layout_width="0dp"
            android:layout_weight="1"
            android:layout_height="wrap_content"
            android:textSize="20sp"
            android:text="价格:"
            />
       <Button
           android:id="@+id/main_shan"
           android:layout_gravity="center_vertical"
           android:layout_width="0dp"
           android:layout_weight="1"
           android:layout_height="wrap_content"
           android:textSize="20sp"
           android:text="删除"
           />

    </LinearLayout>

</LinearLayout>

适配器的父类 adapterfu:
<?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:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">
        <CheckBox
            android:id="@+id/adapterfu_box"
            android:layout_gravity="center_vertical"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            />

        <TextView
            android:id="@+id/adapterfu_tv"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="商家1"
            android:textSize="20sp" />

    </LinearLayout>

</LinearLayout>

适配器的字类:
 
<?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:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">

        <CheckBox
            android:id="@+id/adapterzi_box"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center_vertical" />

        <ImageView
            android:id="@+id/adapterzi_iv"
            android:layout_width="60dp"
            android:layout_height="60dp"
            android:layout_gravity="center_vertical" />

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

            <TextView
                android:id="@+id/adapterzi_title"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:ellipsize="end"
                android:maxLines="1"
                android:text="哈哈啊哈哈啊"
                android:textSize="18sp" />

            <TextView
                android:id="@+id/adapterzi_subhead"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:ellipsize="end"
                android:maxLines="1"
                android:text="哈哈啊哈哈啊"
                android:textSize="18sp" />

            <TextView
                android:id="@+id/adapterzi_price"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:ellipsize="end"
                android:maxLines="1"
                android:text="哈哈啊哈哈啊"
                android:textSize="18sp" />

        </LinearLayout>

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

            <Button
                android:id="@+id/adapterzi_jia"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="+"
                android:textSize="20sp" />

            <TextView
                android:id="@+id/adapterzi_count"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="1"
                android:textSize="20sp" />

            <Button
                android:id="@+id/adapterzi_jian"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="-"
                android:textSize="20sp" />

        </LinearLayout>

    </LinearLayout>

</LinearLayout>
加减:
//加
holder.jia.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View view) {
        ++aa;
        //获取当前点击的pid sellerid num
        String sellerid = list.get(position).getSellerid();
        String pid1 = list.get(position).getPid();
        //获取num当前的数量
        String num1 = list.get(position).getNum();
        Integer integer = Integer.valueOf(num1);
        int count = integer + aa;
        //给map赋值
        map.put("sellerid", sellerid);
        map.put("pid", pid1);
        map.put("num", count+"");
        Log.d("哈哈", "onClick: "+count);

        //通过EventBus传值到frag4购物车
        EventBus.getDefault().post(map);

    }
});

//减
holder.jian.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View view) {
        String num = list.get(position).getNum();
        if (num.equals("1")){
            Toast.makeText(context, "不能再减了", Toast.LENGTH_SHORT).show();
            return;
        }

        --aa;
        //获取当前点击的pid sellerid num
        String sellerid = list.get(position).getSellerid();
        String pid1 = list.get(position).getPid();
        //获取num当前的数量
        String num1 = list.get(position).getNum();
        Integer integer = Integer.valueOf(num1);
        int count = integer + aa;
        //给map赋值
        map.put("sellerid", sellerid);
        map.put("pid", pid1);
        map.put("num", count+"");
        Log.d("哈哈", "onClick: "+count);

        //通过EventBus传值到frag4购物车
        EventBus.getDefault().post(map);
    }
});

//EventBus
@Subscribe(threadMode = ThreadMode.MainThread, sticky = true)
public void eventBus(Map<String,String> map){
    if (map!=null){
        //更新购物车
        Presenter presenter=new Presenter((ViewInterface.ViewGengXinCart) this);
        presenter.presenGengXinCart(map);
    }
}