retrofit实现购物车和分类页面

    Retrofit拼接接口

public static final String LEFT_SHOP="https://www.zhaoapi.cn/";

接口

//左侧的拼接地址
@GET("product/getCatagory")
Call<LeftDatas> getLeftDatas();

//右侧的拼接地址
@GET("product/getProductCatagory?")
Call<RightDatas> getRightdatas(@Query ("cid")int cid);
//查询购物车的
@GET("product/getCarts?uid=13249")
Call<ShowDatas> getShowDatas();

1.分类页面布局

使用recycleView 和framelayout

显示左边布局

xml布局

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

    <android.support.v7.widget.RecyclerView
        android:id="@+id/leftviews"
        android:layout_width="100dp"
        android:layout_height="match_parent"></android.support.v7.widget.RecyclerView>

    <FrameLayout
        android:id="@+id/rightfragment"
        android:layout_width="match_parent"
        android:layout_height="match_parent"></FrameLayout>
</LinearLayout>

<2>fragment中使用

public class FenLeiFragment extends Fragment {
    @BindView(R.id.leftviews)
    RecyclerView leftviews;
    @BindView(R.id.rightfragment)
    FrameLayout rightfragment;
    Unbinder unbinder;
    private LeftShopAdaper adaper;
    private List<LeftDatas.DataBean> data;

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View view = inflater.inflate (R.layout.fenlei, container, false);
        unbinder = ButterKnife.bind (this, view);
        ininview();
        return view;
    }
    private void ininview() {

        //得到数据
        Retrofit retrofit=new Retrofit.Builder ()
                .addConverterFactory (GsonConverterFactory.create ())
                .baseUrl (Connstand.LEFT_SHOP)
                .build ();
        IConnstand iConnstand = retrofit.create (IConnstand.class);
        iConnstand.getLeftDatas ().enqueue (new Callback<LeftDatas> () {
            @Override
            public void onResponse(Call<LeftDatas> call, Response<LeftDatas> response) {
                data = response.body ().getData ();
                adaper = new LeftShopAdaper (getActivity (), data);
                leftviews.setAdapter (adaper);
                leftviews.setLayoutManager (new LinearLayoutManager (getActivity (),LinearLayoutManager.VERTICAL,false));
                //点击左边的列表进行传值
                leftclick();

            }

            @Override
            public void onFailure(Call<LeftDatas> call, Throwable t) {

            }
        });
    }

    private void leftclick() {

        adaper.setMsetItemOnclickListener (new LeftShopAdaper.SetItemOnclickListener () {
            @Override
            public void setCid(int layoutPosition) {
                //得到每个下标里面的cid
                int cid = data.get (layoutPosition).getCid ();
                //动态的加载右边的fragment
                FenLeiRightFragment fenLeiRightFragment=new FenLeiRightFragment ();
                //bundle进行传值
                Bundle bundle=new Bundle ();
                bundle.putString ("cid",cid+"");
                fenLeiRightFragment.setArguments (bundle);
                //加载布局
                getActivity ().getSupportFragmentManager ().beginTransaction ().replace (R.id.rightfragment,fenLeiRightFragment).commit ();
            }
        });
    }


    @Override
    public void onDestroyView() {
        super.onDestroyView ();
        unbinder.unbind ();
    }
}

《3》适配器中使用

public class LeftShopAdaper extends RecyclerView.Adapter<RecyclerView.ViewHolder>{

    private Context context;
    private List<LeftDatas.DataBean> data;

    public LeftShopAdaper(Context context, List<LeftDatas.DataBean> data) {
        this.context = context;
        this.data = data;
    }

    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view=View.inflate (context,R.layout.fenlei_style,null);
        ViewHolder holder=new ViewHolder (view);
        return holder;
    }

    @Override
    public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
        ViewHolder holder1= (ViewHolder) holder;
        holder1.textView.setText (data.get (position).getName ());
        holder1.simpleDraweeView.setImageURI (data.get (position).getIcon ());
        //得到下标
        final int layoutPosition = holder1.getLayoutPosition ();
        //在item的点击事件里进行操作利用接口回调传下标
        holder1.itemView.setOnClickListener (new View.OnClickListener () {
            @Override
            public void onClick(View v) {
                if(msetItemOnclickListener!=null){
                    msetItemOnclickListener.setCid (layoutPosition);
                }
            }
        });


    }

    @Override
    public int getItemCount() {
        return data.size ();
    }

    public class ViewHolder extends RecyclerView.ViewHolder{
        SimpleDraweeView simpleDraweeView;
        TextView textView;
        public ViewHolder(View itemView) {
            super (itemView);
            simpleDraweeView=itemView.findViewById (R.id.leftimages);
            textView=itemView.findViewById (R.id.lefttext);
        }
    }
    //创建接口
    public interface SetItemOnclickListener{
        void setCid(int layoutPosition);
    }
    //接口实现类
    private SetItemOnclickListener  msetItemOnclickListener;

    public void setMsetItemOnclickListener(SetItemOnclickListener msetItemOnclickListener) {
        this.msetItemOnclickListener = msetItemOnclickListener;
    }
}

2.右边framelayout布局

recycleview 的布局文件中再次嵌套了一个recycleview

xml

<android.support.v7.widget.RecyclerView
    android:id="@+id/biaoti"
    android:layout_width="match_parent"
    android:layout_height="match_parent"></android.support.v7.widget.RecyclerView>

fragment代码

/**
 * Created by 11561 on 2018/6/29.
 *
 * 右边的fragment里面是一个recycleview，这个recycleview里面的布局文件里又嵌套了一个recycleview
 *
 *
 */

public class FenLeiRightFragment extends Fragment {

    @BindView(R.id.biaoti)
    RecyclerView biaoti;
    Unbinder unbinder;

    private int cid;

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {

        View view = inflater.inflate (R.layout.fenleiright, container, false);
        //接收传来的值
        Bundle arguments = getArguments ();
        cid = Integer.parseInt (arguments.getString ("cid"));
        initdatas ();

        unbinder = ButterKnife.bind (this, view);
        return view;
    }

    private void initdatas() {

        Retrofit retrofit = new Retrofit.Builder ()
                .addConverterFactory (GsonConverterFactory.create ())
                .baseUrl (Connstand.LEFT_SHOP)
                .build ();
        IConnstand iConnstand = retrofit.create (IConnstand.class);
        //拼接cid并进行解析数据
        iConnstand.getRightdatas (cid).enqueue (new Callback<RightDatas> () {
            @Override
            public void onResponse(Call<RightDatas> call, Response<RightDatas> response) {
                List<RightDatas.DataBean> data = response.body ().getData ();
                //得到适配器
                RightShopAdaper adaper = new RightShopAdaper (getActivity (), data);
                //加载数据
                biaoti.setAdapter (adaper);
                biaoti.setLayoutManager (new LinearLayoutManager (getActivity (), LinearLayoutManager.VERTICAL, false));
            }

            @Override
            public void onFailure(Call<RightDatas> call, Throwable t) {

            }
        });


    }

    @Override
    public void onDestroyView() {
        super.onDestroyView ();
        unbinder.unbind ();
    }
}

第一个适配器中

public class RightShopAdaper extends RecyclerView.Adapter<RecyclerView.ViewHolder>{
    private Context context;
    private List<RightDatas.DataBean> data;

    public RightShopAdaper(Context context, List<RightDatas.DataBean> data) {
        this.context = context;
        this.data = data;
    }

    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view=View.inflate (context,R.layout.fenleiright_style,null);
        //第一个分类中的R.layout.fenleiright_style布局中又嵌套了一个recycleview，所以在这个里面还要加载另一个适配器
        ViewHolder holder=new ViewHolder (view);
        return holder;
    }

    @Override
    public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
        ViewHolder holder1= (ViewHolder) holder;
        holder1.textView.setText (data.get (position).getName ());

        //返回的数据里面还有一层集合，先拿到这个集合
        List<RightDatas.DataBean.ListBean> list = data.get (position).getList ();
        //重新写一个适配器，把拿到的集合放到适配器当中
        RightShopingAdaper shopingAdaper=new RightShopingAdaper (context,list);
        //加载布局
        holder1.recyclerView.setAdapter (shopingAdaper);
        holder1.recyclerView.setLayoutManager (new GridLayoutManager (context,4));

    }

    @Override
    public int getItemCount() {
        return data.size ();
    }

    public class ViewHolder extends RecyclerView.ViewHolder{
        TextView textView;
        RecyclerView recyclerView;
        public ViewHolder(View itemView) {
            super (itemView);
            textView=itemView.findViewById (R.id.rightshoptitle);
            //得到嵌套的recycleview的id，
            recyclerView=itemView.findViewById (R.id.rightshoping);
        }
    }
}

第一个适配器中加载的布局

<TextView
    android:id="@+id/rightshoptitle"
    android:text="标题"
    android:textSize="30dp"
    android:layout_width="match_parent"
    android:layout_height="wrap_content" />

    <android.support.v7.widget.RecyclerView
        android:layout_below="@+id/rightshoptitle"
        android:id="@+id/rightshoping"
        android:layout_width="match_parent"
        android:layout_height="match_parent"></android.support.v7.widget.RecyclerView>

第二个适配器

xml布局

<com.facebook.drawee.view.SimpleDraweeView
    android:id="@+id/rightshopneirongimages"
    android:layout_width="100dp"
    android:layout_height="100dp" />
<TextView
    android:id="@+id/rightshop_text"
    android:text="商品内容"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" />

适配器中

public class RightShopingAdaper extends RecyclerView.Adapter<RecyclerView.ViewHolder>{
    private Context context;
    private List<RightDatas.DataBean.ListBean> data;;

    public RightShopingAdaper(Context context, List<RightDatas.DataBean.ListBean> data) {
        this.context = context;
        this.data = data;
    }

    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view=View.inflate (context,R.layout.fenleirightshop_style,null);
        ViewHolder holder=new ViewHolder (view);
        return holder;
    }

    @Override
    public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
        ViewHolder holder1= (ViewHolder) holder;
        holder1.simpleDraweeView.setImageURI (data.get (position).getIcon ());
        holder1.textView.setText (data.get (position).getName ());
    }

    @Override
    public int getItemCount() {
        return data.size ();
    }

    public class ViewHolder extends RecyclerView.ViewHolder{
        SimpleDraweeView simpleDraweeView;
        TextView textView;
        public ViewHolder(View itemView) {
            super (itemView);
            simpleDraweeView=itemView.findViewById (R.id.rightshopneirongimages);
            textView=itemView.findViewById (R.id.rightshop_text);
        }
    }
}

最后把这个适配器在第一个适配器中加载

二     购物车页面展示

使用二级列表进行展示数据

xml 布局

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:orientation="vertical"
    android:layout_height="match_parent">
    
    <ExpandableListView
        android:layout_weight="9"
        android:id="@+id/busshop"
        android:layout_width="match_parent"
        android:layout_height="0dp"></ExpandableListView>
    
    <RelativeLayout
        android:id="@+id/busshop_bottom"
        android:layout_weight="1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">


        <CheckBox
            android:id="@+id/sum_chbox"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentLeft="true"
            android:layout_alignParentStart="true"
            android:layout_centerVertical="true" />

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignBaseline="@+id/sum_chbox"
            android:layout_alignBottom="@+id/sum_chbox"
            android:layout_toEndOf="@+id/sum_chbox"
            android:layout_toRightOf="@+id/sum_chbox"
            android:text="全选" />

        <TextView
            android:id="@+id/sums"
            android:text="合计:"
           android:layout_centerHorizontal="true"
            android:layout_centerVertical="true"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />
        <TextView
            android:id="@+id/sum_prcie"
            android:text="总价"
            android:layout_toRightOf="@+id/sums"
            android:layout_centerVertical="true"
            android:layout_marginLeft="10dp"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />


        <TextView
            android:id="@+id/jiesuan"
            android:text="结算"
            android:layout_alignParentRight="true"
            android:layout_centerVertical="true"
            android:layout_marginRight="20dp"
            android:background="#ff00"
            android:textColor="#ffffff"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />

    </RelativeLayout>

</LinearLayout>

2.fragment中操作

public class BusFragment extends Fragment {
    @BindView(R.id.busshop)
    ExpandableListView busshop;
    Unbinder unbinder;
    @BindView(R.id.sum_chbox)
    CheckBox sumChbox;
    @BindView(R.id.sums)
    TextView sums;
    @BindView(R.id.sum_prcie)
    TextView sumPrcie;
    @BindView(R.id.jiesuan)
    TextView jiesuan;
    @BindView(R.id.busshop_bottom)
    RelativeLayout busshopBottom;
    private List<ShowDatas.DataBean> data;
    private BusAdaper busAdaper;


    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View view = inflater.inflate (R.layout.bus, container, false);
        unbinder = ButterKnife.bind (this, view);

        inindata ();

        return view;
    }

    private void inindata() {
        //使用retrofit
        Retrofit retrofit = new Retrofit.Builder ()
                .addConverterFactory (GsonConverterFactory.create ())
                .baseUrl (Connstand.LEFT_SHOP)
                .build ();

        IConnstand iConnstand = retrofit.create (IConnstand.class);
        iConnstand.getShowDatas ().enqueue (new Callback<ShowDatas> () {
            @Override
            public void onResponse(Call<ShowDatas> call, Response<ShowDatas> response) {
                data = response.body ().getData ();
                final int price = data.get (0).getList ().get (0).getPrice ();
                //得到适配器
                busAdaper = new BusAdaper (getActivity (), data);
                //加载适配器
                busshop.setAdapter (busAdaper);
                //展示子条目下的所有数据
                List<ShowDatas.DataBean.ListBean> list = data.get (0).getList ();
                for (int i = 0; i < data.size (); i++) {
                    //二级列表里面的属性
                    busshop.expandGroup (i);
                }

            }

            @Override
            public void onFailure(Call<ShowDatas> call, Throwable t) {

            }
        });
        //点击全选框
        sumChbox.setOnCheckedChangeListener (new CompoundButton.OnCheckedChangeListener () {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                //第一层循环遍历第一层数据
               for (int i = 0; i <data.size () ; i++) {
                    //List<ShowDatas.DataBean.ListBean> list = data.get (i).getList ();
                   //第二层循环拿到里面的一层数据
                    for (int j = 0; j <data.get (i).getList ().size () ; j++) {
                        //如果是选中状态赋值为1
                        if(isChecked){
                            data.get (i).getList ().get (j).setSelected (1);
                        }else{
                            data.get (i).getList ().get (j).setSelected (0);
                        }

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

    }


    @Override
    public void onDestroyView() {
        super.onDestroyView ();
        unbinder.unbind ();
    }
}

3.需要两个布局 一个是组布局文件，一个是组布局文件下的子条目布局

组布局

<?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">


    <CheckBox
        android:id="@+id/group_box"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:layout_alignParentTop="true"
        android:layout_marginLeft="48dp"
        android:layout_marginStart="48dp"
        android:layout_marginTop="33dp" />

    <TextView
        android:id="@+id/group_text"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/group_box"
        android:layout_alignBottom="@+id/group_box"
        android:layout_marginLeft="40dp"
        android:layout_marginStart="40dp"
        android:layout_toEndOf="@+id/group_box"
        android:layout_toRightOf="@+id/group_box"
        android:text="组" />
    

</RelativeLayout>

子布局

绘制一个背景图，在适配器中给设置的加和减两个text view设置背景

在draw able建一个xml文件

<shape
    xmlns:android="http://schemas.android.com/apk/res/android">
    <!-- 内部颜色 -->
    <solid
        android:color="#ffffff" />
    <!-- 边缘线条颜色 -->
    <stroke
        android:width="3dp"
        android:color="#9e9e9e" />
    <!-- 圆角的幅度 -->
    <corners android:radius="20dp" />
</shape>

子布局xml文件

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


    <CheckBox
        android:id="@+id/child_box"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="100dp">


        <com.facebook.drawee.view.SimpleDraweeView
            android:id="@+id/child_image"
            android:layout_width="100dp"
            android:layout_height="100dp" />

        <TextView
            android:id="@+id/child_text"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_toRightOf="@+id/child_image"
            android:text="名称" />

        <TextView
            android:id="@+id/child_price"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="70dp"
            android:layout_toRightOf="@+id/child_image"
            android:text="价钱" />

    </RelativeLayout>
    <LinearLayout
        android:layout_marginLeft="300dp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content">

        <TextView
            android:id="@+id/addimage"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="   +   "
            android:textSize="20dp" />

        <TextView
            android:id="@+id/numliang"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="5dp"
            android:padding="5dp"
            android:text="1"
            android:textSize="20dp" />

        <TextView
            android:id="@+id/subimage"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="   -   "
            android:textSize="20dp" />

    </LinearLayout>


</LinearLayout>

4.二级列表的适配器

public class BusAdaper extends BaseExpandableListAdapter{
    private Context context;
    private List<ShowDatas.DataBean> data;
    private int childIndex;
    //定义变量，点击加减的时候变化
    private int i=1;
    public BusAdaper(Context context, List<ShowDatas.DataBean> data) {
        this.context = context;
        this.data = data;
    }

    //得到组的数量
    @Override
    public int getGroupCount() {
        return data.size ();
    }
    //组的位置(groupPosition)得到
    @Override
    public int getChildrenCount(int groupPosition) {
        return data.get (groupPosition).getList ().size ();
    }
    //根据组的位置得到内容
    @Override
    public Object getGroup(int groupPosition) {
        return data.get (groupPosition);
    }
    //根据组的位置得到指定的子条目内容
    @Override
    public Object getChild(int groupPosition, int childPosition) {
        return data.get (groupPosition).getList ().get (childPosition);
    }
    //得到组的id
    @Override
    public long getGroupId(int groupPosition) {
        return groupPosition;
    }
    //得到字条的ID
    @Override
    public long getChildId(int groupPosition, int childPosition) {
        return childPosition;
    }
    //Stable  固定的     是否持有固定的ID
    @Override
    public boolean hasStableIds() {
        return true;
    }
    //得到组的视图
    //isExpanded 是否处于展开的状态
    @Override
    public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) {
        GroupViewHolder groupViewHolder;
        //优化
        if(convertView==null){
            convertView=View.inflate (context, R.layout.busgroup_style,null);
            groupViewHolder=new GroupViewHolder ();

            groupViewHolder.gcheckBox = convertView.findViewById (R.id.group_box);
            groupViewHolder.gtextview=  convertView.findViewById (R.id.group_text);
            convertView.setTag (groupViewHolder);
        }else{
            groupViewHolder= (GroupViewHolder) convertView.getTag ();
        }
        groupViewHolder.gtextview.setText (data.get (groupPosition).getSellerName ());

        for (int j = 0; j <data.size () ; j++) {

        }


        return convertView;
    }

    //得到子条目的布局
    @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
    @Override
    public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, final ViewGroup parent) {
        final ChildViewHolder childViewHolder;
        //优化
        if(convertView==null){
            convertView=View.inflate (context,R.layout.buschild_style,null);
            childViewHolder=new ChildViewHolder ();
            childViewHolder.ccheckBox=convertView.findViewById (R.id.child_box);
            childViewHolder.ctextview=convertView.findViewById (R.id.child_text);
            childViewHolder.cprice=convertView.findViewById (R.id.child_price);
            childViewHolder.add=convertView.findViewById (R.id.addimage);
            childViewHolder.sub=convertView.findViewById (R.id.subimage);
            childViewHolder.numliang=convertView.findViewById (R.id.numliang);
            childViewHolder.csimpleDraweeView=convertView.findViewById (R.id.child_image);

            convertView.setTag (childViewHolder);
        }else{
            childViewHolder= (ChildViewHolder) convertView.getTag ();
        }
        childViewHolder.ctextview.setText (data.get (groupPosition).getList ().get (childPosition).getTitle ());
        String images = data.get (groupPosition).getList ().get (childPosition).getImages ();
        String[] split = images.split ("\\|");
        //设置背景
        childViewHolder.add.setBackground (context.getDrawable (R.drawable.ed));
        childViewHolder.sub.setBackground (context.getDrawable (R.drawable.ed));
        childViewHolder.csimpleDraweeView.setImageURI (split[0]);
        childViewHolder.cprice.setText (data.get (groupPosition).getList ().get (childPosition).getPrice ()+"");
        final int price = data.get (groupPosition).getList ().get (childPosition).getPrice ();
        //在子条目里面得到接口中那个状态值getSelected
        int selected = data.get (groupPosition).getList ().get (childPosition).getSelected ();
        //进行判断
        if(selected==1){
            //等于1的时候选为true
            childViewHolder.ccheckBox.setChecked (true);
        }else{
            //否则选为false
            childViewHolder.ccheckBox.setChecked (false);
        }

        //点击加号数量进行加加
        childViewHolder.add.setOnClickListener (new View.OnClickListener () {
            @Override
            public void onClick(View v) {
                if(i>=1){
                    i++;
                    //i定义的是1,当i++的时候让i*价钱的单价
                    int numi = BusAdaper.this.i * price;
                    childViewHolder.cprice.setText (numi+"");
                }
                /*if(mgetNumListener!=null){
                    mgetNumListener.getnum (i);
                }*/
                //让加减号中间的数变化
                childViewHolder.numliang.setText (i+"");
            }
        });
    //点击减号数量进行加加
    childViewHolder.sub.setOnClickListener (new View.OnClickListener () {
        @Override
        public void onClick(View v) {
            if(i>1){
                i--;
                int numi = BusAdaper.this.i * price;
                childViewHolder.cprice.setText (numi+"");
            }
            //让加减号中间的数变化
            childViewHolder.numliang.setText (i+"");
        }
    });

        return convertView;
    }
    //子条目是否可以点击-----？？？  true 可以进行点击
    @Override
    public boolean isChildSelectable(int groupPosition, int childPosition) {
        return true;
    }

    //组的寄存器
    class GroupViewHolder{
        CheckBox gcheckBox;
        TextView gtextview;
    }
    //子条目的寄存器
    class ChildViewHolder{
        TextView add,sub,numliang;
        CheckBox ccheckBox;
        TextView ctextview,cprice;
        SimpleDraweeView csimpleDraweeView;
    }

   /* public interface GetNumListener{
        void getnum(int i);
    }
    private GetNumListener mgetNumListener;

    public void setMgetNumListener(GetNumListener mgetNumListener) {
        this.mgetNumListener = mgetNumListener;
    }*/
}