购物车的适配器

public class Erjibase extends BaseExpandableListAdapter {    Context context;    List<Chachebean.DataBean> listG;    List<List<Chachebean.DataBean.ListBean>>  listC;    Handler handler;    public Erjibase(Context context, List<Chachebean.DataBean> listG, List<List<Chachebean.DataBean.ListBean>> listC, Handler handler) {        this.context=context;        this.listC=listC;        this.listG=listG;        this.handler=handler;    }    @Override    public int getGroupCount() {        return listG.size();    }    @Override    public int getChildrenCount(int gid) {        return listC.get(gid).size();    }    @Override    public Object getGroup(int gid) {        return listG.get(gid);    }    @Override    public Object getChild(int gid, int cid) {        return listC.get(gid).get(cid);    }    @Override    public long getGroupId(int gid) {        return gid;    }    @Override    public long getChildId(int gid, int cid) {        return cid;    }    @Override    public boolean hasStableIds() {        return true;    }    @Override    public boolean isChildSelectable(int gid, int cid) {        return true;    }    @Override    public View getGroupView(final int gid, boolean b, View view, ViewGroup viewGroup) {        GroupHolder holder;        if (view == null){            view = View.inflate(context, R.layout.funqin,null);            holder = new GroupHolder();            holder.check_group = view.findViewById(R.id.check_group);            holder.text_group = view.findViewById(R.id.text_group);            view.setTag(holder);        }else {            holder = (GroupHolder) view.getTag();        }        final Chachebean.DataBean dataBean = listG.get(gid);        //赋值        holder.check_group.setChecked(dataBean.isGroupChecked());        holder.text_group.setText(dataBean.getSellerName());        //设置点击事件        holder.check_group.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                //2.1改变当前一级选中的状态                dataBean.setGroupChecked(! dataBean.isGroupChecked());                //2.2根据当前一级的状态,改变该组里面二级列表的状态                changeChildState(gid,dataBean.isGroupChecked());                //2.3通过判断所有的一级组是否选中,来决定是否全选选中                changeAllState(isAllGroupChecked());//2.4发送价格个数量:                sendPriceAndCount();                notifyDataSetChanged();            }        });        return view;    }    /**     * 所有的一级列表是否选中     * @return     */    private boolean isAllGroupChecked() {        for (int i=0;i<listG.size();i++){            if (! listG.get(i).isGroupChecked()){                return false;            }        }        return true;    }    /**     * 根据当前一级列表的状态,,,改变当前组中所有二级列表的状态     * @param groupPosition     * @param groupChecked     */    private void changeChildState(int groupPosition, boolean groupChecked) {        List<Chachebean.DataBean.ListBean> listBeans = listC.get(groupPosition);        for (int i=0;i<listBeans.size();i++){            listBeans.get(i).setSelected(groupChecked? 1:0);        }    }    /**     * 根据所有一级列表是否选中,确定外面的全选是否选中     * @param allGroupChecked     */    private void changeAllState(boolean allGroupChecked) {        Message msg = Message.obtain();        msg.what =1;        msg.obj = allGroupChecked;        handler.sendMessage(msg);    }    @Override    public View getChildView(final int gid, int cid, boolean b, View view, ViewGroup viewGroup) {        ChildHolder holder;        if (view == null){            view = View.inflate(context, R.layout.haizi,null);            holder = new ChildHolder();            holder.text_add = view.findViewById(R.id.text_add);            holder.text_num = view.findViewById(R.id.text_num);            holder.text_jian = view.findViewById(R.id.text_jian);            holder.text_title = view.findViewById(R.id.text_title);            holder.text_price = view.findViewById(R.id.text_price);            holder.image_good = view.findViewById(R.id.image_good);            holder.check_child = view.findViewById(R.id.check_child);            view.setTag(holder);        }else {            holder = (ChildHolder) view.getTag();        }        //赋值        //赋值        final Chachebean.DataBean.ListBean listBean = listC.get(gid).get(cid);        holder.text_num.setText(listBean.getNum()+"");//......注意        holder.text_price.setText("¥"+listBean.getPrice());        holder.text_title.setText(listBean.getTitle());        //listBean.getSelected().....0false,,,1true        //设置checkBox选中状态        holder.check_child.setChecked(listBean.getSelected()==0? false:true);        /*implementation 'com.github.bumptech.glide:glide:4.4.0'        annotationProcessor 'com.github.bumptech.glide:compiler:4.4.0'*/       // Glide.with(context).load(listBean.getImages().split("\\|")[0]).into(holder.image_good);        ImageLoader.getInstance().displayImage(listBean.getImages().split("\\|")[0],holder.image_good, Tuutils.getDefaultOption());        //设置点击事件        holder.check_child.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                //3.1点击改变当前子条目状态:....实际是改变当前的数据,,,刷新适配器                listBean.setSelected(listBean.getSelected() ==0? 1:0);                //3.2发送价钱和数量给界面显示                sendPriceAndCount();                //3.3判断当前子条目是否选中                if (listBean.getSelected() == 1){                    //判断一下当前组中所有的子条目是否全部选中                    if (isAllChildSelected(gid)){                        //如果全部选中改变一下当前组的状态                        changeGroupState(gid,true);                        //.确定是否改变全选                        changeAllState(isAllGroupChecked());                    }                }else {                    //如果没有选中改变一下当前组的状态                    changeGroupState(gid,false);                    //.确定是否改变全选                    changeAllState(isAllGroupChecked());                }                //刷新适配器                notifyDataSetChanged();            }        });        //加号:        holder.text_add.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                //改变当前位置 中商品的数量                listBean.setNum(listBean.getNum()+1);                //判断一下是否选中...计算价格数量                if (listBean.getSelected() == 1){                    sendPriceAndCount();                }                //                notifyDataSetChanged();            }        });        //减号        holder.text_jian.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                int num = listBean.getNum();                if (num == 1){                    return;                }                listBean.setNum(num -1);                //判断是否选中                if (listBean.getSelected() == 1){                    sendPriceAndCount();                }                notifyDataSetChanged();            }        });        return view;    }    /**     * 改变当前组的状态     * @param groupPosition     * @param b     */    private void changeGroupState(int groupPosition, boolean b) {        listG.get(groupPosition).setGroupChecked(b);    }    /**     * 判断当前组中所有的二级是否选中     * @param groupPosition     * @return     */    private boolean isAllChildSelected(int groupPosition) {        List<Chachebean.DataBean.ListBean> listBeans = listC.get(groupPosition);        for (int i=0;i<listBeans.size();i++){            if (listBeans.get(i).getSelected() == 0){                return false;            }        }        return true;    }    /**     * 计算总价和数量,,,发送显示     */    private void sendPriceAndCount() {        double price = 0;        int count = 0;        for (int i=0;i<listG.size();i++){            List<Chachebean.DataBean.ListBean> listBeans = listG.get(i).getList();            for (int j = 0;j<listBeans.size();j++){                Chachebean.DataBean.ListBean listBean = listBeans.get(j);                if (listBean.getSelected()==1){                    price += listBean.getPrice()* listBean.getNum();                    count += listBean.getNum();                }            }        }        CountPriceBean countPriceBean = new CountPriceBean(price, count);        //显示到activity页面        Message msg = Message.obtain();        msg.what = 0;        msg.obj = countPriceBean;        handler.sendMessage(msg);    }    /**     * 设置是否全选     * @param checked     */    public void setIfCheckAll(boolean checked) {        for (int i = 0;i<listG.size();i++){            Chachebean.DataBean dataBean = listG.get(i);            //设置组上面的checkBox是否选中            dataBean.setGroupChecked(checked);            List<Chachebean.DataBean.ListBean> listBeans = dataBean.getList();            for (int j = 0; j< listBeans.size(); j++){                //改变是否选中的状态...数据应该变的是                listBeans.get(j).setSelected(checked? 1:0);            }        }        //计算价钱和数量并且发送到mainActivity显示        sendPriceAndCount();        //刷新适配器        notifyDataSetChanged();    }    private class GroupHolder{        CheckBox check_group;        TextView text_group;    }    private class ChildHolder{        CheckBox check_child;        ImageView image_good;        TextView text_title;        TextView text_price;        TextView text_jian;        TextView text_num;        TextView text_add;    }

}