分类列表+购物车

所需要的依赖

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'

所有的布局

1）  底部导航栏

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="com.example.month__moni03.MainActivity"><FrameLayout
        android:id="@+id/fl"
        android:layout_width="match_parent"
        android:layout_weight="9"
        android:layout_height="0dp">FrameLayout><RadioGroup
        android:layout_width="match_parent"
        android:layout_weight="1"
        android:orientation="horizontal"
        android:layout_height="0dp"><RadioButton
            android:id="@+id/fenlei"
            android:layout_width="0dp"
            android:button="@null"
            android:text="分类"
            android:gravity="center"
            android:layout_weight="1"
            android:layout_height="match_parent" /><RadioButton
            android:id="@+id/gwc"
            android:layout_width="0dp"
            android:button="@null"
            android:layout_weight="1"
            android:gravity="center"
            android:text="购物车"
            android:layout_height="match_parent" />RadioGroup>LinearLayout>

分类Fragment

xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
     android:layout_height="match_parent"
    android:orientation="horizontal"
   ><RelativeLayout
        android:layout_width="0dp"
        android:layout_weight="3"
        android:layout_height="match_parent"><android.support.v7.widget.RecyclerView
            android:layout_width="200dp"
            android:id="@+id/leftrlv"
          android:layout_centerHorizontal="true"
            android:layout_height="match_parent">android.support.v7.widget.RecyclerView>RelativeLayout><RelativeLayout
        android:layout_width="0dp"
        android:layout_weight="7"
        android:layout_height="match_parent"><android.support.v7.widget.RecyclerView
            android:layout_width="600dp"
            android:id="@+id/rightrlv"
            android:layout_height="match_parent">android.support.v7.widget.RecyclerView>RelativeLayout>LinearLayout>

分类左边布局

xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:padding="10dp"
android:layout_centerHorizontal="true"
    android:layout_height="match_parent"><TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:textSize="18sp"
        android:text="sdgffdhghfdga"

        android:id="@+id/leftitem"
    />
RelativeLayout>

分类右边布局

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"><TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/righttou"
        android:textSize="23sp"
        android:layout_centerHorizontal="true"
        android:text="sdgffdhghfdga"
        /><android.support.v7.widget.RecyclerView
        android:layout_below="@id/righttou"
        android:layout_width="match_parent"
        android:id="@+id/rightzifen"
        android:layout_height="wrap_content">android.support.v7.widget.RecyclerView>

RelativeLayout>

分类右边子布局

xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:orientation="vertical"
    android:padding="10dp"
    android:layout_centerHorizontal="true"
    android:layout_height="match_parent">
<com.facebook.drawee.view.SimpleDraweeView
    android:layout_width="50dp"
    android:layout_height="50dp"
    android:layout_centerHorizontal="true"

    android:id="@+id/zimg01"
   /><TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
      android:layout_below="@id/zimg01"
        android:gravity="center"
        android:id="@+id/zt01"
        android:text="sdgffdhghfdga"
        />RelativeLayout>

购物车Fragment

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">
            <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>
        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>

购物车商家条目布局

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>

购物车商品布局

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>

代码

实现底部导航栏

public class MainActivity extends AppCompatActivity implements View.OnClickListener {private FrameLayout mFl;/**
     * 分类
     */
    private RadioButton mFenlei;/**
     * 购物车
     */
    private RadioButton mGwc;private FragmentManager supportFragmentManager;private FrgamenGwcFragment frgamenGwcFragment;private FrgamenFenleiFragment fenleiFragment;@Override
    protected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);initView();}private void initView() {fenleiFragment = new FrgamenFenleiFragment();frgamenGwcFragment = new FrgamenGwcFragment();mFl = (FrameLayout) findViewById(R.id.fl);mFenlei = (RadioButton) findViewById(R.id.fenlei);mFenlei.setOnClickListener(this);mGwc = (RadioButton) findViewById(R.id.gwc);mGwc.setOnClickListener(this);supportFragmentManager = getSupportFragmentManager();FragmentTransaction transaction = supportFragmentManager.beginTransaction();transaction.replace(R.id.fl,fenleiFragment).commit();}@Override
    public void onClick(View v) {switch (v.getId()) {case R.id.fenlei:supportFragmentManager.beginTransaction().replace(R.id.fl,fenleiFragment).commit();break;case R.id.gwc:supportFragmentManager.beginTransaction().replace(R.id.fl,frgamenGwcFragment).commit();break;}}
}

分类的代码

分类Fragment

public class FrgamenFenleiFragment extends Fragment {private View view;private RecyclerView mLeftrlv;private RecyclerView mRightrlv;@Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {View inflate = inflater.inflate(R.layout.frgamen_fenlei, null);initView(inflate);return inflate;}@Override
    public void onViewCreated(View view, Bundle savedInstanceState) {super.onViewCreated(view, savedInstanceState);getleft();getright(1);}private void getleft() {String leftpath="https://www.zhaoapi.cn/product/getCatagory";mLeftrlv.setLayoutManager(new LinearLayoutManager(getActivity(), OrientationHelper.VERTICAL,false));OkHttp3Util_03.doGet(leftpath, new Callback() {@Override
            public void onFailure(Call call, IOException e) {}@Override
            public void onResponse(Call call, Response response) throws IOException {String string = response.body().string();final Left left = new Gson().fromJson(string, Left.class);final List data = left.getData();getActivity().runOnUiThread(new Runnable() {@Override
                    public void run() {LeftAdapter  leftAdapter=new LeftAdapter(getContext(),data);mLeftrlv.setAdapter(leftAdapter);leftAdapter.SetOnItemClickListener(new LeftAdapter.OnItemClickListener() {@Override
                            public void onItemClick(int position) {int cid = data.get(position).getCid();getright(cid);}});}});}});}private void getright(final int right) {String    rightqian = "https://www.zhaoapi.cn/product/getProductCatagory?cid="+right;mRightrlv.setLayoutManager(new LinearLayoutManager(getActivity(), OrientationHelper.VERTICAL,false));OkHttp3Util_03.doGet(rightqian, new Callback() {@Override
            public void onFailure(Call call, IOException e) {}@Override
            public void onResponse(Call call, Response response) throws IOException {String string = response.body().string();RightOut rightOut = new Gson().fromJson(string, RightOut.class);final List data = rightOut.getData();getActivity().runOnUiThread(new Runnable() {@Override
                    public void run() {RightAdapter  rightAdapter = new RightAdapter(getActivity(),data);mRightrlv.setAdapter(rightAdapter);}});}});}private void initView(View inflate) {mLeftrlv = (RecyclerView) inflate.findViewById(R.id.leftrlv);mRightrlv = (RecyclerView) inflate.findViewById(R.id.rightrlv);}}

分类的Bean类

public class Left {/**
     * msg :
     * code : 0
     * data : [{"cid":1,"createtime":"2017-10-10T19:41:39","icon":"http://120.27.23.105/images/category/shop.png","ishome":1,"name":"京东超市"},{"cid":2,"createtime":"2017-10-10T19:41:39","icon":"http://120.27.23.105/images/category/qqg.png","ishome":1,"name":"全球购"},{"cid":3,"createtime":"2017-10-10T19:45:11","icon":"http://120.27.23.105/images/category/phone.png","ishome":1,"name":"手机数码"},{"cid":5,"createtime":"2017-10-10T20:12:03","icon":"http://120.27.23.105/images/category/man.png","ishome":1,"name":"男装"},{"cid":6,"createtime":"2017-10-10T20:12:03","icon":"http://120.27.23.105/images/category/girl.png","ishome":1,"name":"女装"},{"cid":7,"createtime":"2017-10-10T20:12:03","icon":"http://120.27.23.105/images/category/manshoe.png","ishome":1,"name":"男鞋"},{"cid":8,"createtime":"2017-10-10T20:12:03","icon":"http://120.27.23.105/images/category/girlshoe.png","ishome":1,"name":"女鞋"},{"cid":9,"createtime":"2017-10-10T20:12:03","icon":"http://120.27.23.105/images/category/shirt.png","ishome":1,"name":"内衣配饰"},{"cid":10,"createtime":"2017-10-10T20:12:03","icon":"http://120.27.23.105/images/category/bag.png","ishome":1,"name":"箱包手袋"},{"cid":11,"createtime":"2017-10-10T20:12:03","icon":"http://120.27.23.105/images/category/beauty.png","ishome":1,"name":"美妆个护"},{"cid":12,"createtime":"2017-10-10T20:12:03","icon":"http://120.27.23.105/images/category/jewel.png","ishome":1,"name":"钟表珠宝"},{"cid":13,"createtime":"2017-10-10T20:12:03","icon":"http://120.27.23.105/images/category/luxury.png","ishome":1,"name":"奢侈品"},{"cid":14,"createtime":"2017-10-10T20:12:03","icon":"http://120.27.23.105/images/category/computer.png","ishome":1,"name":"电脑办公"},{"cid":15,"createtime":"2017-09-29T10:13:48","icon":"http://120.27.23.105/images/icon.png","ishome":0,"name":"家用电器"},{"cid":16,"createtime":"2017-09-29T10:13:48","icon":"http://120.27.23.105/images/icon.png","ishome":0,"name":"食品生鲜"},{"cid":17,"createtime":"2017-09-29T10:13:48","icon":"http://120.27.23.105/images/icon.png","ishome":0,"name":"酒水饮料"},{"cid":18,"createtime":"2017-09-29T10:13:48","icon":"http://120.27.23.105/images/icon.png","ishome":0,"name":"母婴童装"},{"cid":19,"createtime":"2017-09-29T10:13:48","icon":"http://120.27.23.105/images/icon.png","ishome":0,"name":"玩具乐器"},{"cid":20,"createtime":"2017-09-29T10:13:48","icon":"http://120.27.23.105/images/icon.png","ishome":0,"name":"医药保健"}]
     */

    private String msg;private String code;private List data;public String getMsg() {return msg;}public void setMsg(String msg) {this.msg = msg;}public String getCode() {return code;}public void setCode(String code) {this.code = code;}public List getData() {return data;}public void setData(List data) {this.data = data;}public static class DataBean {/**
         * cid : 1
         * createtime : 2017-10-10T19:41:39
         * icon : http://120.27.23.105/images/category/shop.png
         * ishome : 1
         * name : 京东超市
         */

        private int cid;private String createtime;private String icon;private int ishome;private String name;public int getCid() {return cid;}public void setCid(int cid) {this.cid = cid;}public String getCreatetime() {return createtime;}public void setCreatetime(String createtime) {this.createtime = createtime;}public String getIcon() {return icon;}public void setIcon(String icon) {this.icon = icon;}public int getIshome() {return ishome;}public void setIshome(int ishome) {this.ishome = ishome;}public String getName() {return name;}public void setName(String name) {this.name = name;}}
}

public class RightOut {/**
     * msg : 获取子分类成功
     * code : 0
     * data : [{"cid":"1","list":[{"icon":"http://120.27.23.105/images/icon.png","name":"月饼","pcid":1,"pscid":1},{"icon":"http://120.27.23.105/images/icon.png","name":"坚果炒货","pcid":1,"pscid":2},{"icon":"http://120.27.23.105/images/icon.png","name":"糖巧","pcid":1,"pscid":3},{"icon":"http://120.27.23.105/images/icon.png","name":"休闲零食","pcid":1,"pscid":4},{"icon":"http://120.27.23.105/images/icon.png","name":"肉干肉脯","pcid":1,"pscid":5},{"icon":"http://120.27.23.105/images/icon.png","name":"饼干蛋糕","pcid":1,"pscid":6},{"icon":"http://120.27.23.105/images/icon.png","name":"蜜饯果干","pcid":1,"pscid":7},{"icon":"http://120.27.23.105/images/icon.png","name":"无糖食品","pcid":1,"pscid":8}],"name":"休闲零食","pcid":"1"},{"cid":"1","list":[{"icon":"http://120.27.23.105/images/icon.png","name":"新鲜水果","pcid":2,"pscid":9},{"icon":"http://120.27.23.105/images/icon.png","name":"海鲜水产","pcid":2,"pscid":10},{"icon":"http://120.27.23.105/images/icon.png","name":"精选肉类","pcid":2,"pscid":11},{"icon":"http://120.27.23.105/images/icon.png","name":"蛋类","pcid":2,"pscid":12},{"icon":"http://120.27.23.105/images/icon.png","name":"新鲜蔬菜","pcid":2,"pscid":13},{"icon":"http://120.27.23.105/images/icon.png","name":"冷冻食品","pcid":2,"pscid":14},{"icon":"http://120.27.23.105/images/icon.png","name":"饮品甜品","pcid":2,"pscid":15},{"icon":"http://120.27.23.105/images/icon.png","name":"大闸蟹","pcid":2,"pscid":16}],"name":"京东生鲜","pcid":"2"},{"cid":"1","list":[{"icon":"http://120.27.23.105/images/icon.png","name":"大米","pcid":3,"pscid":21},{"icon":"http://120.27.23.105/images/icon.png","name":"面粉","pcid":3,"pscid":22},{"icon":"http://120.27.23.105/images/icon.png","name":"杂粮","pcid":3,"pscid":23},{"icon":"http://120.27.23.105/images/icon.png","name":"食用油","pcid":3,"pscid":24},{"icon":"http://120.27.23.105/images/icon.png","name":"调味品","pcid":3,"pscid":25},{"icon":"http://120.27.23.105/images/icon.png","name":"方便速食","pcid":3,"pscid":26},{"icon":"http://120.27.23.105/images/icon.png","name":"有机食品","pcid":3,"pscid":27}],"name":"粮油调味","pcid":"3"},{"cid":"1","list":[{"icon":"http://120.27.23.105/images/icon.png","name":"饮用水","pcid":4,"pscid":28},{"icon":"http://120.27.23.105/images/icon.png","name":"饮料","pcid":4,"pscid":29},{"icon":"http://120.27.23.105/images/icon.png","name":"牛奶乳品","pcid":4,"pscid":30},{"icon":"http://120.27.23.105/images/icon.png","name":"名茶","pcid":4,"pscid":31},{"icon":"http://120.27.23.105/images/icon.png","name":"蜂蜜","pcid":4,"pscid":32}],"name":"水饮茗茶","pcid":"4"},{"cid":"1","list":[{"icon":"http://120.27.23.105/images/icon.png","name":"白酒","pcid":5,"pscid":33},{"icon":"http://120.27.23.105/images/icon.png","name":"葡萄酒","pcid":5,"pscid":34},{"icon":"http://120.27.23.105/images/icon.png","name":"洋酒","pcid":5,"pscid":35},{"icon":"http://120.27.23.105/images/icon.png","name":"啤酒","pcid":5,"pscid":36},{"icon":"http://120.27.23.105/images/icon.png","name":"黄酒","pcid":5,"pscid":37},{"icon":"http://120.27.23.105/images/icon.png","name":"陈年老酒","pcid":5,"pscid":38}],"name":"中外名酒","pcid":"5"}]
     */

    private String msg;private String code;private List data;public String getMsg() {return msg;}public void setMsg(String msg) {this.msg = msg;}public String getCode() {return code;}public void setCode(String code) {this.code = code;}public List getData() {return data;}public void setData(List data) {this.data = data;}public static class DataBean {/**
         * cid : 1
         * list : [{"icon":"http://120.27.23.105/images/icon.png","name":"月饼","pcid":1,"pscid":1},{"icon":"http://120.27.23.105/images/icon.png","name":"坚果炒货","pcid":1,"pscid":2},{"icon":"http://120.27.23.105/images/icon.png","name":"糖巧","pcid":1,"pscid":3},{"icon":"http://120.27.23.105/images/icon.png","name":"休闲零食","pcid":1,"pscid":4},{"icon":"http://120.27.23.105/images/icon.png","name":"肉干肉脯","pcid":1,"pscid":5},{"icon":"http://120.27.23.105/images/icon.png","name":"饼干蛋糕","pcid":1,"pscid":6},{"icon":"http://120.27.23.105/images/icon.png","name":"蜜饯果干","pcid":1,"pscid":7},{"icon":"http://120.27.23.105/images/icon.png","name":"无糖食品","pcid":1,"pscid":8}]
         * name : 休闲零食
         * pcid : 1
         */

        private String cid;private String name;private String pcid;private List list;public String getCid() {return cid;}public void setCid(String cid) {this.cid = cid;}public String getName() {return name;}public void setName(String name) {this.name = name;}public String getPcid() {return pcid;}public void setPcid(String pcid) {this.pcid = pcid;}public List getList() {return list;}public void setList(List list) {this.list = list;}public static class ListBean {/**
             * icon : http://120.27.23.105/images/icon.png
             * name : 月饼
             * pcid : 1
             * pscid : 1
             */

            private String icon;private String name;private int pcid;private int pscid;public String getIcon() {return icon;}public void setIcon(String icon) {this.icon = icon;}public String getName() {return name;}public void setName(String name) {this.name = name;}public int getPcid() {return pcid;}public void setPcid(int pcid) {this.pcid = pcid;}public int getPscid() {return pscid;}public void setPscid(int pscid) {this.pscid = pscid;}}}
}

分类的适配器

分类左边适配器

public class LeftAdapter extends RecyclerView.Adapter {private Context context;private List data;private  OnItemClickListener onItemClickListener;public LeftAdapter(Context context, List data) {this.context = context;this.data = data;}@NonNull
    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {View view = LayoutInflater.from(context).inflate(R.layout.leftitem, null,false);LeftViewHloder vh=new LeftViewHloder(view);return vh;}@Override
    public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, final int position) {LeftViewHloder vh= (LeftViewHloder) holder;vh.leftitem.setText(data.get(position).getName());vh.leftitem.setOnClickListener(new View.OnClickListener() {@Override
            public void onClick(View v) {if (onItemClickListener!=null){onItemClickListener.onItemClick(position);}}});}@Override
    public int getItemCount() {return data.size();}private class LeftViewHloder extends RecyclerView.ViewHolder {private final TextView leftitem;public LeftViewHloder(View itemView) {super(itemView);leftitem = itemView.findViewById(R.id.leftitem);}}public   interface OnItemClickListener {void onItemClick(int position);}public void SetOnItemClickListener(OnItemClickListener onItemClickListener){this.onItemClickListener=onItemClickListener;}}

public class RightAdapter extends RecyclerView.Adapter {private Context context;private List data;public RightAdapter(Context context, List data) {this.context = context;this.data = data;}@NonNull
    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {View view = LayoutInflater.from(context).inflate(R.layout.right, null,false);LeftViewHloder vh=new LeftViewHloder(view);return vh;}@Override
    public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, final int position) {LeftViewHloder vh= (LeftViewHloder) holder;vh.righttou.setText(data.get(position).getName());List rightzilist = data.get(position).getList();vh.rightzifen.setLayoutManager(new GridLayoutManager(context,3,GridLayoutManager.VERTICAL,false));RightZiAdapter  rightZiAdapter = new RightZiAdapter (context,rightzilist);vh.rightzifen.setAdapter(rightZiAdapter);}@Override
    public int getItemCount() {return data.size();}private class LeftViewHloder extends RecyclerView.ViewHolder {private final TextView righttou;private final RecyclerView rightzifen;public LeftViewHloder(View itemView) {super(itemView);righttou = itemView.findViewById(R.id.righttou);rightzifen = itemView.findViewById(R.id.rightzifen);}}}

public class RightZiAdapter extends RecyclerView.Adapter {private Context context;private List rightzilist;public RightZiAdapter(Context context, List rightzilist) {this.context = context;this.rightzilist = rightzilist;}@Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {View view = LayoutInflater.from(context).inflate(R.layout.rightzi, null,false);MyViewHloder viewHolderA = new MyViewHloder(view);return viewHolderA;}@Override
    public void onBindViewHolder(RecyclerView.ViewHolder holder, final int position) {MyViewHloder vh= (MyViewHloder) holder;vh.t01.setText(rightzilist.get(position).getName());Uri uri =  Uri.parse(rightzilist.get(position).getIcon());DraweeController controller = Fresco.newDraweeControllerBuilder().setUri(uri).setAutoPlayAnimations(true).build();vh.img01 .setController(controller);}@Override
    public int getItemCount() {return rightzilist.size();}class  MyViewHloder extends RecyclerView.ViewHolder{private final TextView t01;private final SimpleDraweeView img01;public MyViewHloder(View itemView) {super(itemView);img01 = itemView.findViewById(R.id.zimg01 );t01 = itemView.findViewById(R.id.zt01);}}}

购物车Fragment

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=15633;@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;iif (! 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 listBeans = cartBean.getData().get(i).getList();for (int j = 0;jif (listBeans.get(j).getSelected() == 0){//有未选中的条目
                return false;}}return true;}}

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 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 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 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 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 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 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 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);//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 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 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 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;}
}

购物车Bean类

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 黑)"},{"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":91,"price":1344,"pscid":112,"selected":0,"sellerid":2,"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 全网通"},{"bargainPrice":5599,"createtime":"2017-10-10T17:30:32","detailUrl":"https://item.m.jd.com/product/4824715.html?utm#_source=androidapp&utm#_medium=appshare&utm#_campaign=t#_335139774&utm#_term=QQfriends","images":"https://m.360buyimg.com/n12/jfs/t7768/184/1153704394/148460/f42e1432/599a930fN8a85626b.jpg!q70.jpg","num":1,"pid":59,"price":5599,"pscid":40,"selected":0,"sellerid":3,"subhead":"游戏本选择4G独显，拒绝掉帧】升级版IPS全高清防眩光显示屏，WASD方向键颜色加持，三大出风口立体散热！","title":"戴尔DELL灵越游匣15PR-6648B GTX1050 15.6英寸游戏笔记本电脑(i5-7300HQ 8G 128GSSD+1T 4G独显 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 (6GB+64GB)【标配版】"},{"bargainPrice":399,"createtime":"2017-10-14T21:38:26","detailUrl":"https://item.m.jd.com/product/1439822107.html?utm_source=androidapp&utm_medium=appshare&utm_campaign=t_335139774&utm_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t5887/201/859509257/69994/6bde9bf6/59224c24Ne854e14c.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t5641/233/853609022/57374/5c73d281/59224c24N3324d5f4.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t5641/233/853609022/57374/5c73d281/59224c24N3324d5f4.jpg!q70.jpg","num":1,"pid":83,"price":444,"pscid":85,"selected":0,"sellerid":4,"subhead":"满2件，总价打6.50折","title":"Gap男装 休闲舒适简约水洗五袋直筒长裤紧身牛仔裤941825 深灰色 33/32(175/84A)"}],"sellerName":"商家4","sellerid":"4"},{"list":[{"bargainPrice":1999,"createtime":"2017-10-10T16:09:02","detailUrl":"https://item.m.jd.com/product/5025971.html?utm#_source=androidapp&utm#_medium=appshare&utm#_campaign=t#_335139774&utm#_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t7210/232/3738666823/232298/9004583e/59c3a9a7N8de42e15.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t8356/82/2107423621/109733/c019b8c6/59c3a9a6Ne9a4bdd7.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t10219/74/25356012/171379/7d55e296/59c3a9a8N82fa6e02.jpg!q70.jpg","num":2,"pid":49,"price":333,"pscid":39,"selected":0,"sellerid":5,"subhead":"vivo X20 带你开启全面屏时代！逆光也清晰，照亮你的美！","title":"vivo X20 全面屏手机 全网通 4GB+64GB 金色 移动联通电信4G手机 双卡双待"}],"sellerName":"商家5","sellerid":"5"},{"list":[{"bargainPrice":3455,"createtime":"2017-10-14T21:48:08","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":2,"pid":50,"price":444,"pscid":39,"selected":0,"sellerid":6,"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 (6GB+64GB)【标配版】"}],"sellerName":"商家6","sellerid":"6"},{"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":1,"pid":51,"price":555,"pscid":39,"selected":0,"sellerid":7,"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 (6GB+64GB)【标配版】"}],"sellerName":"商家7","sellerid":"7"},{"list":[{"bargainPrice":111.99,"createtime":"2017-10-14T21:39:05","detailUrl":"https://item.m.jd.com/product/4719303.html?utm_source=androidapp&utm_medium=appshare&utm_campaign=t_335139774&utm_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t9004/210/1160833155/647627/ad6be059/59b4f4e1N9a2b1532.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t7504/338/63721388/491286/f5957f53/598e95f1N7f2adb87.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t7441/10/64242474/419246/adb30a7d/598e95fbNd989ba0a.jpg!q70.jpg","num":1,"pid":1,"price":118,"pscid":1,"selected":0,"sellerid":17,"subhead":"每个中秋都不能简单，无论身在何处，你总需要一块饼让生活更圆满，京东月饼让爱更圆满京东自营，闪电配送，更多惊喜，快用手指戳一下","title":"北京稻香村 稻香村中秋节月饼 老北京月饼礼盒655g"}],"sellerName":"商家17","sellerid":"17"}]
     * msg : 请求成功
     */

    private String code;private String msg;private List 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 getData() {return data;}public void setData(List 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 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 getList() {return list;}public void setList(List 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;}}}
}

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;}
}

M层

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 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);}}}});}
}

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);}
}

工具类

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";
}

 接口

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

接口

public interface IMainPresenter {void onSuccess(CartBean cartBean);
}

二级列表

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);}
}

需要在manifast注册

public class MyApp extends Application {@Override
    public void onCreate() {super.onCreate();Fresco.initialize(this);}
}

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