二级列表购物车

package com.test.expandablelistview;

import android.content.Context;

import android.view.View;

import android.view.ViewGroup;

import android.widget.BaseExpandableListAdapter;

import android.widget.CheckBox;

import android.widget.TextView;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import java.util.Set;

public class MyAdpater extends BaseExpandableListAdapter {

    private Context context;

    private String[] group;

    private String[][] child;

    private HashMap<Integer, Boolean> groupList;

    private List<HashMap<Integer, Boolean>> childList;

    private List<List<Bean>> dataList;

    public MyAdpater(Context context) {

        this.context = context;

        initData();

    }

    private void initData() {

        group = new String[5];

        child = new String[5][];

        groupList = new HashMap<>();

        childList = new ArrayList<>();

        dataList = new ArrayList<>();

        for (int i = 0; i < 5; i++) {

            group[i] = "商家" + i;

            groupList.put(i, false);

            String[] strings = new String[3];

            HashMap<Integer, Boolean> map = new HashMap<>();

            ArrayList<Bean> been = new ArrayList<>();

            for (int y = 0; y < 3; y++) {

                strings[y] = "商家" + i + "商品" + y;

                map.put(y, false);

                Bean bean = new Bean("100", "1");

                been.add(bean);

            }

            child[i] = strings;

            childList.add(map);

            dataList.add(been);

        }

    }

    @Override

    public int getGroupCount() {

        return group.length;

    }

    @Override

    public int getChildrenCount(int groupPosition) {

        return child[groupPosition].length;

    }

    @Override

    public Object getGroup(int groupPosition) {

        return group[groupPosition];

    }

    @Override

    public Object getChild(int groupPosition, int childPosition) {

        return child[childPosition];

    }

    @Override

    public long getGroupId(int groupPosition) {

        return groupPosition;

    }

    @Override

    public long getChildId(int groupPosition, int childPosition) {

        return childPosition;

    }

    @Override

    public boolean hasStableIds() {

        return false;

    }

    @Override

    public View getGroupView(final int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) {

        GroupViewHolder holder = null;

        if (convertView == null) {

            convertView = View.inflate(context, R.layout.group_item, null);

            holder = new GroupViewHolder();

            holder.tv = (TextView) convertView.findViewById(R.id.group_tv);

            holder.ck = (CheckBox) convertView.findViewById(R.id.group_ck);

            convertView.setTag(holder);

        } else {

            holder = (GroupViewHolder) convertView.getTag();

        }

        holder.tv.setText(group[groupPosition]);

        holder.ck.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {

                groupList.put(groupPosition, !groupList.get(groupPosition));

                //设置二级列表的选中状态,根据一级列表的状态来改变

                setChildCheckAll();

                //计算选中的价格和数量

                String shopPrice = getShopPrice();

                //判断商品是否全部选中

                boolean b = selectAll();

                adapterData.Data(v, shopPrice, b);

            }

        });

        holder.ck.setChecked(groupList.get(groupPosition));

        return convertView;

    }

    @Override

    public View getChildView(final int groupPosition, final int childPosition,

                             boolean isLastChild, View convertView, ViewGroup parent) {

        ChildViewHolder holder = null;

        if (convertView == null) {

            convertView = View.inflate(context, R.layout.child_item, null);

            holder = new ChildViewHolder();

            holder.tv = (TextView) convertView.findViewById(R.id.child_tv);

            holder.ck = (CheckBox) convertView.findViewById(R.id.child_ck);

            holder.jianshao = (TextView) convertView.findViewById(R.id.jianshao);

            holder.zengjia = (TextView) convertView.findViewById(R.id.zengjia);

            holder.number = (TextView) convertView.findViewById(R.id.number);

            convertView.setTag(holder);

        } else {

            holder = (ChildViewHolder) convertView.getTag();

        }

        holder.tv.setText(child[groupPosition][childPosition]);

        holder.ck.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {

                HashMap<Integer, Boolean> hashMap = childList.get(groupPosition);

                hashMap.put(childPosition, !hashMap.get(childPosition));

                //判断二级列表是否全部选中

                ChildisChecked(groupPosition);

                //计算选中的价格和数量

                String shopPrice = getShopPrice();

                //判断商品是否全部选中

                boolean b = selectAll();

                adapterData.Data(v, shopPrice, b);

            }

        });

        final ChildViewHolder finalHolder = holder;

        holder.zengjia.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {

                List<Bean> been = dataList.get(groupPosition);

                String num = finalHolder.number.getText().toString();

                int i = Integer.parseInt(num);

                ++i;

                been.get(childPosition).setNumber(i + "");

                //计算选中的价格和数量

                String shopPrice = getShopPrice();

                //判断商品是否全部选中

                boolean b = selectAll();

                adapterData.Data(v, shopPrice, b);

                notifyDataSetChanged();

            }

        });

        holder.jianshao.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {

                List<Bean> been = dataList.get(groupPosition);

                String num = finalHolder.number.getText().toString();

                int i = Integer.parseInt(num);

                if (i > 1) {

                    --i;

  
4000
              }

                been.get(childPosition).setNumber(i + "");

                //计算选中的价格和数量

                String shopPrice = getShopPrice();

                //判断商品是否全部选中

                boolean b = selectAll();

                adapterData.Data(v, shopPrice, b);

                notifyDataSetChanged();

            }

        });

        holder.number.setText(dataList.get(groupPosition).get(childPosition).getNumber().toString());

        holder.ck.setChecked(childList.get(groupPosition).get(childPosition));

        return convertView;

    }

    @Override

    public boolean isChildSelectable(int groupPosition, int childPosition) {

        return false;

    }

    class GroupViewHolder {

        TextView tv;

        CheckBox ck;

    }

    class ChildViewHolder {

        TextView tv;

        CheckBox ck;

        TextView jianshao;

        TextView zengjia;

        TextView number;

    }

    //设置二级列表的选中状态,根据一级列表的状态来改变

    private void setChildCheckAll() {

        for (int i = 0; i < childList.size(); i++) {

            HashMap<Integer, Boolean> integerBooleanHashMap1 = childList.get(i);

            Set<Map.Entry<Integer, Boolean>> entries = integerBooleanHashMap1.entrySet();

            for (Map.Entry<Integer, Boolean> entry : entries) {

                entry.setValue(groupList.get(i));

            }

        }

        notifyDataSetChanged();

    }

    //判断二级列表是否全部选中

    private void ChildisChecked(int groupPosition) {

        boolean ischecked = true;

        HashMap<Integer, Boolean> hashMap = childList.get(groupPosition);

        Set<Map.Entry<Integer, Boolean>> entries = hashMap.entrySet();

        for (Map.Entry<Integer, Boolean> entry : entries) {

            if (!entry.getValue()) {

                ischecked = false;

                break;

            }

        }

        groupList.put(groupPosition, ischecked);

        notifyDataSetChanged();

    }

    //全选

    public void checkAllShop(boolean checked) {

        Set<Map.Entry<Integer, Boolean>> entries = groupList.entrySet();

        for (Map.Entry<Integer, Boolean> entry : entries) {

            entry.setValue(checked);

        }

        setChildCheckAll();

        notifyDataSetChanged();

    }

    //计算价格

    public String getShopPrice() {

        int price = 0;

        int number = 0;

        for (int y = 0; y < childList.size(); y++) {

            HashMap<Integer, Boolean> integerBooleanHashMap1 = childList.get(y);

            Set<Map.Entry<Integer, Boolean>> entries = integerBooleanHashMap1.entrySet();

            for (Map.Entry<Integer, Boolean> entry : entries) {

                if (entry.getValue()) {

                    Bean bean = dataList.get(y).get(entry.getKey());

                    price += Integer.parseInt(bean.getPrice()) * Integer.parseInt(bean.getNumber());

                    number += Integer.parseInt(bean.getNumber());

                }

            }

        }

        return price + "," + number;

    }

    //编辑一级和二级列表,如果全部选中,全选按钮也选中

    public boolean selectAll() {

        boolean isChecked = true;

        for (int y = 0; y < childList.size(); y++) {

            HashMap<Integer, Boolean> hashMap = childList.get(y);

            Set<Map.Entry<Integer, Boolean>> entries = hashMap.entrySet();

            for (Map.Entry<Integer, Boolean> entry : entries) {

                if (!entry.getValue()) {

                    isChecked = false;

                }

            }

        }

        return isChecked;

    }

    private AdapterData adapterData;

    public interface AdapterData {

        void Data(View v, String str, boolean b);

    }

    public void getAdapterData(AdapterData adapterData) {

        this.adapterData = adapterData;

    }

}