例：

shopping_cart_checked

shopping_cart_none_check

//一Fragment购物车页面
    //如果没有数据就换一个 uid （private int uid=71;）
public class FrgamenGwcFragment extends Fragment implements IMainActivity {private MyExpandable expanableListView;private MainPresenter mainPresenter;private CheckBox check_all;private TextView text_total;private TextView text_buy;private View view;private Handler handler = new Handler(){@Override
        public void handleMessage(Message msg) {if (msg.what == 0){final CountPriceBean countPriceBean = (CountPriceBean) msg.obj;text_total.setText("合计:¥"+countPriceBean.getPriceString());text_buy.setText("去结算("+countPriceBean.getCount()+")");}}};private MyAdapter5 myAdapter;private int index;private SharedPreferences test;private int uid=71;@Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {view = inflater.inflate(R.layout.frgamen_gwc, container, false);expanableListView = view.findViewById(R.id.expanable_list_view);check_all = view.findViewById(R.id.check_all);text_total = view.findViewById(R.id.text_total);text_buy = view.findViewById(R.id.text_buy);expanableListView.setGroupIndicator(null);//获取数据....MVP
        mainPresenter = new MainPresenter(this);//全选设置点击事件
        check_all.setOnClickListener(new View.OnClickListener() {@Override
            public void onClick(View v) {switch (v.getId()){case R.id.check_all://所有孩子的状态跟着全选的状态进行改变
                        if (myAdapter != null){myAdapter.setAllChildChecked(check_all.isChecked());}break;}}});return view;}@Override
    public void onResume() {super.onResume();expanableListView.setVisibility(View.VISIBLE);//调用获取数据的方法
        mainPresenter.getCartData(ApiUtil.selectCartUrl,uid);}@Override
    public void onCartSuccess(final CartBean cartBean) {getActivity().runOnUiThread(new Runnable() {@Override
            public void run() {if (cartBean == null){//需要更改获取的cartBean数据
                    expanableListView.setVisibility(View.GONE);return;//1.根据某一个组中的二级所有的子条目是否选中,确定当前一级列表是否选中
                }else {for (int i = 0;i<cartBean.getData().size();i++){if(isChildInGroupChecked(i,cartBean)){cartBean.getData().get(i).setGroup_check(true);}}//2.设置是否全选选中...根据所有的一级列表是否选中,确定全选是否选中
                    check_all.setChecked(isAllGroupChecked(cartBean));//设置适配器
                    myAdapter = new MyAdapter5(getContext(), cartBean,handler,mainPresenter,uid);expanableListView.setAdapter(myAdapter);//展开所有的组...expanableListView.expandGroup()
                    for (int i = 0;i<cartBean.getData().size();i++){expanableListView.expandGroup(i);}//3.计算总价和商品的数量
                    myAdapter.sendPriceAndCount();}}});}private boolean isAllGroupChecked(CartBean cartBean) {for (int i =0;i<cartBean.getData().size();i++){if (! cartBean.getData().get(i).isGroup_check()){//表示有没选中的组
                return false;}}return true;}private boolean isChildInGroupChecked(int i, CartBean cartBean) {//当前组中所有子条目的数据
        List<CartBean.DataBean.ListBean> listBeans = cartBean.getData().get(i).getList();for (int j = 0;j<listBeans.size();j++){if (listBeans.get(j).getSelected() == 0){//有未选中的条目
                return false;}}return true;}
}//    <?xml version="1.0" encoding="utf-8"?>
//<RelativeLayout
//    xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent"
//            android:layout_height="match_parent">
//<ScrollView
//        android:layout_above="@+id/linear_bottom"
//                android:layout_width="match_parent"
//                android:layout_height="match_parent">
//<LinearLayout
//            android:orientation="vertical"
//                    android:layout_width="match_parent"
//                    android:layout_height="match_parent">
//<!--二级列表-->
//<com.example.month__moni03.utils.MyExpandable
//        android:id="@+id/expanable_list_view"
//        android:layout_width="match_parent"
//        android:layout_height="wrap_content"
//        android:visibility="visible"
//        >
//</com.example.month__moni03.utils.MyExpandable>
//<!--recyclerView展示为你推荐-->
//</LinearLayout>
//</ScrollView>
//<LinearLayout
//        android:orientation="horizontal"
//                android:id="@+id/linear_bottom"
//                android:layout_alignParentBottom="true"
//                android:layout_width="match_parent"
//                android:layout_height="50dp">
//<CheckBox
//            android:button="@null"
//                    android:background="@drawable/check_box_selector"
//                    android:layout_marginLeft="10dp"
//                    android:id="@+id/check_all"
//                    android:layout_width="wrap_content"
//                    android:layout_height="wrap_content" />
//<TextView
//            android:id="@+id/text_total"
//                    android:text="合计:¥0.00"
//                    android:layout_gravity="center_vertical"
//                    android:layout_marginLeft="10dp"
//                    android:layout_width="0dp"
//                    android:layout_weight="1"
//                    android:layout_height="wrap_content" />
//<TextView
//            android:id="@+id/text_buy"
//                    android:background="#ff0000"
//                    android:textColor="#ffffff"
//                    android:gravity="center"
//                    android:text="去结算(0)"
//                    android:layout_width="100dp"
//                    android:layout_height="match_parent" />
//</LinearLayout>
//</RelativeLayout>

//@drawable/check_box_selector
//    <?xml version="1.0" encoding="utf-8"?>
//<selector xmlns:android="http://schemas.android.com/apk/res/android">
//<item android:state_checked="true" android:drawable="@drawable/shopping_cart_checked"/>
//<item android:state_checked="false" android:drawable="@drawable/shopping_cart_none_check"/>
//<item android:drawable="@drawable/shopping_cart_none_check"/>
//</selector>

//public interface IMainActivity {
//    void onCartSuccess(CartBean cartBean);
//}

//public class MyExpandable extends ExpandableListView {
//    public MyExpandable(Context context) {
//        super(context);
//    }
//    public MyExpandable(Context context, AttributeSet attrs) {
//        super(context, attrs);
//    }
//    public MyExpandable(Context context, AttributeSet attrs, int defStyleAttr) {
//        super(context, attrs, defStyleAttr);
//    }
//    @Override
//    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
//        int height = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE>>2,MeasureSpec.AT_MOST);
//        super.onMeasure(widthMeasureSpec, height);
//    }
//}

//public class CartBean {
//    /**
//     * code : 0
//     * data : [{"list":[{"bargainPrice":99,"createtime":"2017-10-14T21:38:26","detailUrl":"https://item.m.jd.com/product/4345173.html?utm#_source=androidapp&utm#_medium=appshare&utm#_campaign=t#_335139774&utm#_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t6037/35/2944615848/95178/6cd6cff0/594a3a10Na4ec7f39.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t6607/258/1025744923/75738/da120a2d/594a3a12Ne3e6bc56.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t6370/292/1057025420/64655/f87644e3/594a3a12N5b900606.jpg!q70.jpg","num":1,"pid":45,"price":2999,"pscid":39,"selected":0,"sellerid":1,"subhead":"高清双摄，就是清晰！2000+1600万高清摄像头，6GB大内存+高通骁龙835处理器，性能怪兽！","title":"一加手机5 (A5000) 6GB+64GB 月岩灰 全网通 双卡双待 移动联通电信4G手机"},{"bargainPrice":159,"createtime":"2017-10-14T21:49:15","detailUrl":"https://item.m.jd.com/product/5061723.html?utm_source=androidapp&utm_medium=appshare&utm_campaign=t_335139774&utm_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t8716/197/1271594444/173291/2f40bb4f/59b743bcN8509428e.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t8347/264/1286771527/92188/5cf5ec04/59b7420fN65378e9e.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t7363/165/3000956253/190883/179a372/59b743bfNd0c79d93.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t7399/112/2935531768/183594/b77c7d4a/59b7441aNc3d40133.jpg!q70.jpg","num":1,"pid":90,"price":1233,"pscid":112,"selected":0,"sellerid":1,"subhead":"针织针织闪闪闪亮你的眼","title":"维迩旎 2017秋冬新款长袖针织连衣裙韩版气质中长款名媛包臀A字裙 zx179709 黑色 XL"}],"sellerName":"商家1","sellerid":"1"},{"list":[{"bargainPrice":11800,"createtime":"2017-10-14T21:38:26","detailUrl":"https://item.m.jd.com/product/5025518.html?utm#_source=androidapp&utm#_medium=appshare&utm#_campaign=t#_335139774&utm#_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t8830/106/1760940277/195595/5cf9412f/59bf2ef5N5ab7dc16.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t5428/70/1520969931/274676/b644dd0d/591128e7Nd2f70da0.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t5566/365/1519564203/36911/620c750c/591128eaN54ac3363.jpg!q70.jpg","num":1,"pid":58,"price":6399,"pscid":40,"selected":0,"sellerid":2,"subhead":"升级4G大显存！Nvme协议Pcie SSD,速度快人一步】GTX1050Ti就选拯救者！专业游戏键盘&新模具全新设计！","title":"联想(Lenovo)拯救者R720 15.6英寸游戏笔记本电脑(i5-7300HQ 8G 1T+128G SSD GTX1050Ti 4G IPS 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XL"}],"sellerName":"商家2","sellerid":"2"},{"list":[{"bargainPrice":1599,"createtime":"2017-10-14T21:48:08","detailUrl":"https://item.m.jd.com/product/1993026402.html?utm#_source=androidapp&utm#_medium=appshare&utm#_campaign=t#_335139774&utm#_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t5863/302/8961270302/97126/41feade1/5981c81cNc1b1fbef.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t7003/250/1488538438/195825/53bf31ba/5981c57eN51e95176.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t5665/100/8954482513/43454/418611a9/5981c57eNd5fc97ba.jpg!q70.jpg","num":2,"pid":47,"price":111,"pscid":39,"selected":0,"sellerid":3,"subhead":"碳黑色 32GB 全网通 官方标配   1件","title":"锤子 坚果Pro 特别版 巧克力色 酒红色 全网通 移动联通电信4G手机 双卡双待 碳黑色 32GB 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IPS)黑"}],"sellerName":"商家3","sellerid":"3"},{"list":[{"bargainPrice":3455,"createtime":"2017-10-14T21:38:26","detailUrl":"https://item.m.jd.com/product/12224420750.html?utm_source=androidapp&utm_medium=appshare&utm_campaign=t_335139774&utm_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t9106/106/1785172479/537280/253bc0ab/59bf78a7N057e5ff7.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t9106/106/1785172479/537280/253bc0ab/59bf78a7N057e5ff7.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t8461/5/1492479653/68388/7255e013/59ba5e84N91091843.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t8461/5/1492479653/68388/7255e013/59ba5e84N91091843.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t8803/356/1478945529/489755/2a163ace/59ba5e84N7bb9a666.jpg!q70.jpg","num":3,"pid":48,"price":222,"pscid":39,"selected":0,"sellerid":4,"subhead":"【现货新品抢购】全面屏2.0震撼来袭，骁龙835处理器，四曲面陶瓷机","title":"小米（MI） 小米MIX2 手机 黑色 全网通 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//     * msg : 请求成功
//     */
//    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 {
//        /**
//         * list : [{"bargainPrice":99,"createtime":"2017-10-14T21:38:26","detailUrl":"https://item.m.jd.com/product/4345173.html?utm#_source=androidapp&utm#_medium=appshare&utm#_campaign=t#_335139774&utm#_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t6037/35/2944615848/95178/6cd6cff0/594a3a10Na4ec7f39.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t6607/258/1025744923/75738/da120a2d/594a3a12Ne3e6bc56.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t6370/292/1057025420/64655/f87644e3/594a3a12N5b900606.jpg!q70.jpg","num":1,"pid":45,"price":2999,"pscid":39,"selected":0,"sellerid":1,"subhead":"高清双摄，就是清晰！2000+1600万高清摄像头，6GB大内存+高通骁龙835处理器，性能怪兽！","title":"一加手机5 (A5000) 6GB+64GB 月岩灰 全网通 双卡双待 移动联通电信4G手机"},{"bargainPrice":159,"createtime":"2017-10-14T21:49:15","detailUrl":"https://item.m.jd.com/product/5061723.html?utm_source=androidapp&utm_medium=appshare&utm_campaign=t_335139774&utm_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t8716/197/1271594444/173291/2f40bb4f/59b743bcN8509428e.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t8347/264/1286771527/92188/5cf5ec04/59b7420fN65378e9e.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t7363/165/3000956253/190883/179a372/59b743bfNd0c79d93.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t7399/112/2935531768/183594/b77c7d4a/59b7441aNc3d40133.jpg!q70.jpg","num":1,"pid":90,"price":1233,"pscid":112,"selected":0,"sellerid":1,"subhead":"针织针织闪闪闪亮你的眼","title":"维迩旎 2017秋冬新款长袖针织连衣裙韩版气质中长款名媛包臀A字裙 zx179709 黑色 XL"}]
//         * sellerName : 商家1
//         * sellerid : 1
//         */
//        //注意...需要自己添加一个booelan类型的字段,,,表示商家(一级列表是否选中)
//        private boolean group_check;
//        public boolean isGroup_check() {
//            return group_check;
//        }
//        public void setGroup_check(boolean group_check) {
//            this.group_check = group_check;
//        }
//        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 {
//            /**
//             * bargainPrice : 99.0
//             * createtime : 2017-10-14T21:38:26
//             * detailUrl : https://item.m.jd.com/product/4345173.html?utm#_source=androidapp&utm#_medium=appshare&utm#_campaign=t#_335139774&utm#_term=QQfriends
//             * images : https://m.360buyimg.com/n0/jfs/t6037/35/2944615848/95178/6cd6cff0/594a3a10Na4ec7f39.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t6607/258/1025744923/75738/da120a2d/594a3a12Ne3e6bc56.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t6370/292/1057025420/64655/f87644e3/594a3a12N5b900606.jpg!q70.jpg
//             * num : 1
//             * pid : 45
//             * price : 2999.0
//             * pscid : 39
//             * selected : 0
//             * sellerid : 1
//             * subhead : 高清双摄，就是清晰！2000+1600万高清摄像头，6GB大内存+高通骁龙835处理器，性能怪兽！
//             * title : 一加手机5 (A5000) 6GB+64GB 月岩灰 全网通 双卡双待 移动联通电信4G手机
//             */
//            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;
//            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;
//            }
//        }
//    }
//}

//二购物车的适配器
public class MyAdapter5 extends BaseExpandableListAdapter {private MainPresenter mainPresenter;private Handler handler;private CartBean cartBean;private Context context;private int childIndex;private int allIndex;private int uid;public MyAdapter5(Context context, CartBean cartBean, Handler handler, MainPresenter mainPresenter,int uid) {this.context = context;this.cartBean = cartBean;this.handler = handler;this.mainPresenter = mainPresenter;this.uid = uid;}@Override
    public int getGroupCount() {return cartBean.getData().size();}@Override
    public int getChildrenCount(int groupPosition) {return cartBean.getData().get(groupPosition).getList().size();}@Override
    public Object getGroup(int groupPosition) {return cartBean.getData().get(groupPosition);}@Override
    public Object getChild(int groupPosition, int childPosition) {return cartBean.getData().get(groupPosition).getList().get(childPosition);}@Override
    public long getGroupId(int groupPosition) {return groupPosition;}@Override
    public long getChildId(int groupPosition, int childPosition) {return childPosition;}@Override
    public boolean hasStableIds() {return true;}@Override
    public View getGroupView(int groupPosition, boolean b, View view, ViewGroup viewGroup) {final GroupHolder holder;if (view == null){view = View.inflate(context, R.layout.group_layout,null);holder = new GroupHolder();holder.checkBox = view.findViewById(R.id.group_check);holder.textView = view.findViewById(R.id.group_text);view.setTag(holder);}else {holder = (GroupHolder) view.getTag();}final CartBean.DataBean dataBean = cartBean.getData().get(groupPosition);//赋值
        holder.textView.setText(dataBean.getSellerName());holder.checkBox.setChecked(dataBean.isGroup_check());//一级列表的点击事件
        holder.checkBox.setOnClickListener(new View.OnClickListener() {@Override
            public void onClick(View view) {//点击一级列表的时候,子条目需要一个个的去执行更新,,,,全都执行完成之后再去请求查询购物车
                //使用递归的形式...例如一组里面3个孩子,,,0,1,2
                childIndex = 0;//更新
                updateChildCheckedInGroup(holder.checkBox.isChecked(),dataBean);}});return view;}/**
     * 点击以及列表的时候,去改变所有子条目的状态
     * @param
     * @param checked
     * @param dataBean
     */
    private void updateChildCheckedInGroup(final boolean checked, final CartBean.DataBean dataBean) {CartBean.DataBean.ListBean listBean = dataBean.getList().get(childIndex);//请求更新购物车的接口...更新成功之后,再次请求查询购物车的接口,进行数据的展示
        //?uid=71&sellerid=1&pid=1&selected=0&num=10
        Map<String, String> params = new HashMap<>();params.put("uid", String.valueOf(uid));params.put("sellerid", String.valueOf(listBean.getSellerid()));params.put("pid", String.valueOf(listBean.getPid()));params.put("selected", String.valueOf(checked ? 1:0));params.put("num", String.valueOf(listBean.getNum()));OkHttp3Util_03.doPost(ApiUtil.updateCartUrl, params, new Callback() {@Override
            public void onFailure(Call call, IOException e) {}@Override
            public void onResponse(Call call, Response response) throws IOException {if (response.isSuccessful()){childIndex ++;//0,1,2....size()
                    if (childIndex < dataBean.getList().size()){//继续更新
                        updateChildCheckedInGroup(checked,dataBean);}else {//请求查询购物车的操作...重新展示数据
                        mainPresenter.getCartData(ApiUtil.selectCartUrl,uid);}}}});}@Override
    public View getChildView(int groupPosition, int childPosition, boolean b, View view, ViewGroup viewGroup) {ChildHolder holder;if (view == null){view = View.inflate(context, R.layout.child_layout,null);holder = new ChildHolder();holder.checkBox = view.findViewById(R.id.child_check);holder.text_title = view.findViewById(R.id.child_title);holder.imageView = view.findViewById(R.id.child_image);holder.text_price = view.findViewById(R.id.child_price);holder.text_jian = view.findViewById(R.id.text_jian);holder.text_num = view.findViewById(R.id.text_num);holder.text_add = view.findViewById(R.id.text_add);view.setTag(holder);}else {holder = (ChildHolder) view.getTag();}final CartBean.DataBean.ListBean listBean = cartBean.getData().get(groupPosition).getList().get(childPosition);//赋值
        holder.text_title.setText(listBean.getTitle());holder.text_price.setText("¥"+listBean.getBargainPrice());String[] strings = listBean.getImages().split("\\|");holder.imageView.setImageURI(strings[0]);holder.checkBox.setChecked(listBean.getSelected() == 0? false:true);//根据0,1进行设置是否选中
        //setText()我们使用一定是设置字符串
        holder.text_num.setText(listBean.getNum()+"");//点击进行更新购物车的操作
        //给checkBox设置点击事件,,,,更新是否选中
        holder.checkBox.setOnClickListener(new View.OnClickListener() {@Override
            public void onClick(View view) {//请求更新购物车的接口...更新成功之后,再次请求查询购物车的接口,进行数据的展示
                //?uid=71&sellerid=1&pid=1&selected=0&num=10
                Map<String, String> params = new HashMap<>();params.put("uid", String.valueOf(uid));params.put("sellerid", String.valueOf(listBean.getSellerid()));params.put("pid", String.valueOf(listBean.getPid()));params.put("selected", String.valueOf(listBean.getSelected() == 0?1:0));//listBean.getSelected()...0--->1,,,1--->0
                params.put("num", String.valueOf(listBean.getNum()));OkHttp3Util_03.doPost(ApiUtil.updateCartUrl, params, new Callback() {@Override
                    public void onFailure(Call call, IOException e) {}@Override
                    public void onResponse(Call call, Response response) throws IOException {//更新成功之后,再次请求查询购物车的接口,进行数据的展示
                        if (response.isSuccessful()){mainPresenter.getCartData(ApiUtil.selectCartUrl,uid);}}});}});//加
        holder.text_add.setOnClickListener(new View.OnClickListener() {@Override
            public void onClick(View view) {//请求更新购物车的接口...更新成功之后,再次请求查询购物车的接口,进行数据的展示
                //?uid=71&sellerid=1&pid=1&selected=0&num=10
                Map<String, String> params = new HashMap<>();params.put("uid", String.valueOf(uid));params.put("sellerid", String.valueOf(listBean.getSellerid()));params.put("pid", String.valueOf(listBean.getPid()));params.put("selected", String.valueOf(listBean.getSelected()));//listBean.getSelected()...0--->1,,,1--->0
                params.put("num", String.valueOf(listBean.getNum() +1 ));OkHttp3Util_03.doPost(ApiUtil.updateCartUrl, params, new Callback() {@Override
                    public void onFailure(Call call, IOException e) {}@Override
                    public void onResponse(Call call, Response response) throws IOException {//更新成功之后,再次请求查询购物车的接口,进行数据的展示
                        if (response.isSuccessful()){mainPresenter.getCartData(ApiUtil.selectCartUrl,uid);}}});}});//减
        holder.text_jian.setOnClickListener(new View.OnClickListener() {@Override
            public void onClick(View view) {int num = listBean.getNum();if (num == 1){return;}//请求更新购物车的接口...更新成功之后,再次请求查询购物车的接口,进行数据的展示
                //?uid=71&sellerid=1&pid=1&selected=0&num=10
                Map<String, String> params = new HashMap<>();params.put("uid", String.valueOf(uid));params.put("sellerid", String.valueOf(listBean.getSellerid()));params.put("pid", String.valueOf(listBean.getPid()));params.put("selected", String.valueOf(listBean.getSelected()));//listBean.getSelected()...0--->1,,,1--->0
                params.put("num", String.valueOf(num - 1));OkHttp3Util_03.doPost(ApiUtil.updateCartUrl, params, new Callback() {@Override
                    public void onFailure(Call call, IOException e) {}@Override
                    public void onResponse(Call call, Response response) throws IOException {//更新成功之后,再次请求查询购物车的接口,进行数据的展示
                        if (response.isSuccessful()){mainPresenter.getCartData(ApiUtil.selectCartUrl,uid);}}});}});view.setOnLongClickListener(new View.OnLongClickListener() {@Override
            public boolean onLongClick(View view) {Map<String, String> params = new HashMap<>();params.put("uid",String.valueOf(uid));params.put("pid", String.valueOf(listBean.getPid()));OkHttp3Util_03.doPost(ApiUtil.deleteCartUrl, params, new Callback() {@Override
                    public void onFailure(Call call, IOException e) {}@Override
                    public void onResponse(Call call, Response response) throws IOException {//更新成功之后,再次请求查询购物车的接口,进行数据的展示
                        if (response.isSuccessful()){mainPresenter.getCartData(ApiUtil.selectCartUrl,uid);}}});return false;}});view.setOnLongClickListener(new View.OnLongClickListener() {@Override
            public boolean onLongClick(View view) {final AlertDialog.Builder builder = new AlertDialog.Builder(context);builder.setTitle("提示");builder.setMessage("确定要删除吗");builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {@Override
                    public void onClick(DialogInterface dialog, int which) {}});builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {@Override
                    public void onClick(DialogInterface dialog, int which) {
//                        https://www.zhaoapi.cn/product/deleteCart?uid=72&pid=1
                        String DelPid = String.valueOf(listBean.getPid());Map<String, String> params = new HashMap<>();params.put("uid",String.valueOf(uid));params.put("pid",DelPid);OkHttp3Util_03.doPost(ApiUtil.deleteCartUrl, params, new Callback() {@Override
                            public void onFailure(Call call, IOException e) {}@Override
                            public void onResponse(Call call, Response response) throws IOException {mainPresenter.getCartData(ApiUtil.selectCartUrl,uid);Log.d("test","-----------------删除");}});}});AlertDialog dialog = builder.create();dialog.show();return false;}});return view;}@Override
    public boolean isChildSelectable(int groupPosition, int childPosition) {return true;}/**
     * 计算数量和价格,,,并发送到activity显示
     */
    public void sendPriceAndCount() {double price = 0;int count = 0;for (int i=0;i<cartBean.getData().size();i++){List<CartBean.DataBean.ListBean> listBeans = cartBean.getData().get(i).getList();for (int j = 0; j< listBeans.size(); j++){CartBean.DataBean.ListBean listBean = listBeans.get(j);//选中的时候计算价格和数量
                if (listBean.getSelected() == 1){price += listBean.getBargainPrice() * listBean.getNum();count += listBean.getNum();}}}String priceString = new DecimalFormat("0.00").format(price);//java.text时间
        //封装一下
        CountPriceBean countPriceBean = new CountPriceBean(priceString, count);//发送给activity/fragment进行显示
        Message msg = Message.obtain();msg.what = 0;msg.obj = countPriceBean;handler.sendMessage(msg);}/**
     * 更新所有的子孩子的状态...跟随全选状态改变
     * @param checked
     */
    public void setAllChildChecked(boolean checked) {//通过遍历,把所有的孩子装到一个大的集合中
        List<CartBean.DataBean.ListBean> allList = new ArrayList<>();for (int i=0;i<cartBean.getData().size();i++){for (int j = 0;j<cartBean.getData().get(i).getList().size();j++){allList.add(cartBean.getData().get(i).getList().get(j));}}//更新每一个子孩子的状态...递归
        allIndex = 0;updateAllChild(checked,allList);}/**
     * 更新所有的孩子
     * @param checked
     * @param allList
     */
    private void updateAllChild(final boolean checked, final List<CartBean.DataBean.ListBean> allList) {CartBean.DataBean.ListBean listBean = allList.get(allIndex);//请求更新购物车的接口...更新成功之后,再次请求查询购物车的接口,进行数据的展示
        //?uid=71&sellerid=1&pid=1&selected=0&num=10
        Map<String, String> params = new HashMap<>();params.put("uid",String.valueOf(uid));params.put("sellerid", String.valueOf(listBean.getSellerid()));params.put("pid", String.valueOf(listBean.getPid()));params.put("selected", String.valueOf(checked ? 1:0));params.put("num", String.valueOf(listBean.getNum()));OkHttp3Util_03.doPost(ApiUtil.updateCartUrl, params, new Callback() {@Override
            public void onFailure(Call call, IOException e) {}@Override
            public void onResponse(Call call, Response response) throws IOException {if (response.isSuccessful()){allIndex ++;//判断
                    if (allIndex < allList.size()){//继续更新
                        updateAllChild(checked,allList);}else {//查询购物车
                        mainPresenter.getCartData(ApiUtil.selectCartUrl,uid);}}}});}private class GroupHolder{CheckBox checkBox;TextView textView;}private class ChildHolder{CheckBox checkBox;SimpleDraweeView imageView;TextView text_title;TextView text_price;TextView text_num;TextView text_jian;TextView text_add;}
}//group_layout
//    <?xml version="1.0" encoding="utf-8"?>
//<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
//        android:orientation="horizontal"
//        android:padding="10dp"
//        android:layout_width="match_parent"
//        android:layout_height="match_parent">
//<CheckBox
//        android:button="@null"
//                android:background="@drawable/check_box_selector"
//                android:id="@+id/group_check"
//                android:layout_gravity="center_vertical"
//                android:layout_width="wrap_content"
//                android:layout_height="wrap_content" />
//<TextView
//        android:id="@+id/group_text"
//                android:layout_marginLeft="10dp"
//                android:layout_gravity="center_vertical"
//                android:layout_width="wrap_content"
//                android:layout_height="wrap_content" />
//</LinearLayout>

//child_layout
//    <?xml version="1.0" encoding="utf-8"?>
//<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
//        android:padding="10dp"
//        android:layout_width="match_parent"
//        android:layout_height="wrap_content">
//<CheckBox
//        android:button="@null"
//                android:background="@drawable/check_box_selector"
//                android:layout_centerVertical="true"
//                android:id="@+id/child_check"
//                android:layout_width="wrap_content"
//                android:layout_height="wrap_content" />
//<com.facebook.drawee.view.SimpleDraweeView
//        android:layout_marginLeft="10dp"
//        android:layout_toRightOf="@+id/child_check"
//        android:id="@+id/child_image"
//        android:layout_width="100dp"
//        android:layout_height="100dp" />
//<TextView
//        android:maxLines="2"
//                android:minLines="2"
//                android:id="@+id/child_title"
//                android:layout_marginLeft="5dp"
//                android:layout_toRightOf="@+id/child_image"
//                android:layout_width="wrap_content"
//                android:layout_height="wrap_content" />
//<TextView
//        android:id="@+id/child_price"
//                android:textColor="#ff0000"
//                android:text="¥0.00"
//                android:layout_toRightOf="@+id/child_image"
//                android:layout_alignBottom="@+id/child_image"
//                android:layout_marginLeft="5dp"
//                android:layout_width="wrap_content"
//                android:layout_height="wrap_content" />
//<LinearLayout
//        android:layout_alignParentRight="true"
//                android:layout_alignBottom="@+id/child_image"
//                android:orientation="horizontal"
//                android:layout_width="wrap_content"
//                android:layout_height="wrap_content">
//<TextView
//            android:padding="5dp"
//                    android:background="@drawable/bian_kuang"
//                    android:text="－"
//                    android:id="@+id/text_jian"
//                    android:layout_width="wrap_content"
//                    android:layout_height="wrap_content" />
//<TextView
//            android:paddingLeft="10dp"
//                    android:paddingRight="10dp"
//                    android:paddingBottom="5dp"
//                    android:paddingTop="5dp"
//                    android:background="@drawable/bian_kuang"
//                    android:text="1"
//                    android:id="@+id/text_num"
//                    android:layout_width="wrap_content"
//                    android:layout_height="wrap_content" />
//<TextView
//            android:padding="5dp"
//                    android:background="@drawable/bian_kuang"
//                    android:text="＋"
//                    android:id="@+id/text_add"
//                    android:layout_width="wrap_content"
//                    android:layout_height="wrap_content" />
//</LinearLayout>
//</RelativeLayout>

//@drawable/bian_kuang
//    <?xml version="1.0" encoding="utf-8"?>
//<shape xmlns:android="http://schemas.android.com/apk/res/android">
//<solid android:color="#ffffff"/>
//<stroke android:color="#000000" android:width="0.1dp"/>
//</shape>

//public class ApiUtil {
//    //查询购物车的路径 https://www.zhaoapi.cn/product/getCarts?uid=71&source=android
//    public static String selectCartUrl = "https://www.zhaoapi.cn/product/getCarts";
//    //删除购物车
//    public static String deleteCartUrl = "https://www.zhaoapi.cn/product/deleteCart";
//    //更新购物车....?uid=71&sellerid=1&pid=1&selected=0&num=10
//    public static String updateCartUrl = "https://www.zhaoapi.cn/product/updateCarts";
//    //商品详情.....
//    public static  String selectDing = "https://www.zhaoapi.cn/product/getOrders";
//}

//public class CountPriceBean {
//    private String priceString;
//    private int count;
//    public CountPriceBean(String priceString, int count) {
//        this.priceString = priceString;
//        this.count = count;
//    }
//    public String getPriceString() {
//        return priceString;
//    }
//    public void setPriceString(String priceString) {
//        this.priceString = priceString;
//    }
//    public int getCount() {
//        return count;
//    }
//    public void setCount(int count) {
//        this.count = count;
//    }
//}

/**
 * 网络权限适配
 */
//public class MyApp extends Application {
//    @Override
//    public void onCreate() {
//        super.onCreate();
//        Fresco.initialize(this);
//    }
//}
//
<uses-permission android:name="android.permission.INTERNET"/>
//
    implementation 'com.android.support:recyclerview-v7:27.1.1'
            implementation 'com.squareup.okhttp3:okhttp:3.10.0'
            implementation 'com.google.code.gson:gson:2.2.4'
            compile 'com.facebook.fresco:fresco:0.14.1'
//三购物车p层
public class MainPresenter implements IMainPresenter {private MainModel mainModel;private IMainActivity iMainActivity;public MainPresenter(IMainActivity iMainActivity) {this.iMainActivity = iMainActivity;//创建model
        mainModel = new MainModel(this);}//当前中间者不去直接获取网络数据,,,需要让model获取,,,创建presenter的时候就去创建出model,,,构造方法中
    public void getCartData(String selectCartUrl,int uid) {//需要让model获取,
        mainModel.getCartData(selectCartUrl,uid);}@Override
    public void onSuccess(CartBean cartBean) {//回调给view层...activity
        iMainActivity.onCartSuccess(cartBean);}
}//public interface IMainPresenter {
//    void onSuccess(CartBean cartBean);
//}

//public class MainModel {
//    private IMainPresenter iMainPresenter;
//    public MainModel(IMainPresenter iMainPresenter) {
//        this.iMainPresenter = iMainPresenter;
//    }
//    //在这里真正获取购物车的数据
//    public void getCartData(String selectCartUrl,int uid) {
//        Map<String, String> params = new HashMap<>();
//        params.put("uid", String.valueOf(uid));
//        params.put("source","android");
//        OkHttp3Util_03.doPost(selectCartUrl, params, new Callback() {
//            @Override
//            public void onFailure(Call call, IOException e) {
//            }
//            @Override
//            public void onResponse(Call call, Response response) throws IOException {
//                if (response.isSuccessful()){
//                    String json = response.body().string();
//                    if ("null".equals(json)){
//                        iMainPresenter.onSuccess(null);
//                    }else {
//                        //解析
//                        CartBean cartBean = new Gson().fromJson(json,CartBean.class);
//                        //接口回调...presenter层
//                        iMainPresenter.onSuccess(cartBean);
//                    }
//                }
//            }
//        });
//    }
//}

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