ExpandableListView 2级表

 //activity  

private ExpandableListView exx;
  private Myadapter myadapter;
  private CheckBox cax;
  private Bengowu bengowu;
  private TextView zo;


  @Override
  protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
       setContentView(R.layout.activity_main2);
       //总价
       zo = findViewById(R.id.zonja);
       //复选框
      cax = findViewById(R.id.chax_act2);
      //2级表
      exx = findViewById(R.id.expandble);
      //去掉前边的箭头
      exx.setGroupIndicator(null);
      //吊presenter
      Mypresenter mypresenter = new Mypresenter(null, null);
      mypresenter.gwce(new Mymodle(),this);

     //复选框点击事件
      cax.setOnClickListener(new View.OnClickListener() {
          @Override
          public void onClick(View view) {
              CheckBox cc= (CheckBox) view;
              boolean checked = cc.isChecked();
              cax.setChecked(checked);
              List<Bengowu.DataBean> data = bengowu.getData();
              for (int i=0;i<data.size();i++){
                  boolean fal = data.get(i).getFal();
                  List<Bengowu.DataBean.ListBean> list = data.get(i).getList();
                  for (int j = 0; j <list.size() ; j++) {
                      boolean fal1 = list.get(j).getFal();
                      if (fal){
                          data.get(i).setFal(!fal);
                          list.get(j).setFal(!fal);
                      }else {
                          list.get(j).setFal(!fal1);
                          data.get(i).setFal(!fal);
                      }
                  }

              }

              myadapter.notifyDataSetChanged();
              zongjia();
          }
      });



  }
  //总价方法
public void zongjia(){
      int zz=0;
    List<Bengowu.DataBean> data = bengowu.getData();
    for (int i=0;i<data.size();i++){

        List<Bengowu.DataBean.ListBean> list = data.get(i).getList();
        for (int j = 0; j <list.size() ; j++) {
            boolean fal1 = list.get(j).getFal();
          if (fal1){
              int price = list.get(j).getPrice();
              zz+=price;
          }
        }

    }
    zo.setText(zz+"");
}

 //网络请求成功方
  @Override
  public void ceng(final Bengowu bengowu) {
      this.bengowu=bengowu;
      //适配器
      myadapter = new Myadapter(this, bengowu,this);
       exx.setAdapter(myadapter);
       //展开列表
      for(int i = 0; i < myadapter.getGroupCount(); i++){
          exx.expandGroup(i);
      }
      zongjia();

  }
  //网络请求失败方
  @Override
  public void shib(String ss) {
      Toast.makeText(Main2Activity.this,"失败了",Toast.LENGTH_SHORT).show();
  }
   //计算
  @Override
  public void jisuan(int ii) {
      zo.setText(ii+"");

  }

//适配器

public class Myadapter extends BaseExpandableListAdapter {
    private final Bengowu bengowu;
    private final Context context;
    private final Main2Activity main2Activity;
    Myfu myfu;

  int ppp=0;
    private CCcc cCcc;

    public Myadapter(Context context, Bengowu bengowu,Main2Activity main2Activity){
      this.context=context;
      this.bengowu=bengowu;
        this.main2Activity=main2Activity;
    }

    @Override
    public int getGroupCount() {
        return bengowu.getData().size();
    }

    @Override
    public int getChildrenCount(int i) {
        return bengowu.getData().get(i).getList().size();
    }

    @Override
    public Object getGroup(int i) {
        return bengowu.getData().get(i);
    }

    @Override
    public Object getChild(int i, int i1) {
        return bengowu.getData().get(i).getList().get(i1);
    }

    @Override
    public long getGroupId(int i) {
        return i;
    }

    @Override
    public long getChildId(int i, int i1) {
        return i1;
    }

    @Override
    public boolean hasStableIds() {
        return false;
    }

    @Override
    public View getGroupView(final int i, boolean b, View view, ViewGroup viewGroup) {

             if (view==null){
                 view=View.inflate(context,R.layout.list,null);
               myfu = new Myfu();
                view.setTag(myfu);
             }else {
                 myfu= (Myfu) view.getTag();
             }
               myfu.chx=view.findViewById(R.id.chx);
               myfu.tv_lst=view.findViewById(R.id.tv_lst);

               myfu.tv_lst.setText(bengowu.getData().get(i).getSellerName());
        final Bengowu.DataBean dataBean = bengowu.getData().get(i);
        List<Bengowu.DataBean.ListBean> list = dataBean.getList();
        for (int j = 0; j < list.size(); j++) {
            Bengowu.DataBean.ListBean listBean = list.get(j);
            boolean fal = listBean.getFal();
            if (!fal){
               bengowu.getData().get(i).setFal(false);
            }
        }
        //给
        myfu.chx.setChecked(bengowu.getData().get(i).getFal());

        myfu.chx.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                CheckBox view1 = (CheckBox) view;
                boolean checked = view1.isChecked();
                dataBean.setFal(checked);
                List<Bengowu.DataBean.ListBean> list = dataBean.getList();
                if (checked){
                    for (int j = 0; j < list.size(); j++) {
                        Bengowu.DataBean.ListBean listBean = list.get(j);
                        listBean.setFal(true);
                        int price = listBean.getPrice();
                        ppp+=price;
                    }
                }else {
                    for (int j = 0; j < list.size(); j++) {
                        Bengowu.DataBean.ListBean listBean = list.get(j);
                        listBean.setFal(false);
                    }
                }


                notifyDataSetChanged();
                Mypresenter mypresenter = new Mypresenter(null, null);
                mypresenter.ddss(bengowu,main2Activity);
            }
        });

        return view;
    }

    @Override
    public View getChildView(final int i, final int i1, boolean b, View view, ViewGroup viewGroup) {
        final Myzi myzi;
        if (view==null){
            view=View.inflate(context,R.layout.list2,null);
             myzi = new Myzi();
             view.setTag(myzi);
        }else {
            myzi= (Myzi) view.getTag();
        }
        myzi.chx_li2=view.findViewById(R.id.chx_li2);
        myzi.img_lvl=view.findViewById(R.id.img_lvl);
        myzi.name_li2=view.findViewById(R.id.name_li2);
        myzi.paren=view.findViewById(R.id.paren);
        Bengowu.DataBean dataBean = bengowu.getData().get(i);
        final List<Bengowu.DataBean.ListBean> list = dataBean.getList();
        String images = list.get(i1).getImages();
        String[] split = images.split(".jpg");
       // Glide.with(context).load(split[0]+".jpg").into( myzi.img_lv);
        myzi.img_lvl.setImageResource(R.mipmap.ic_launcher);
        myzi.name_li2.setText(list.get(i1).getTitle());
        myzi.paren.setText(list.get(i1).getPrice()+"");
        myzi.chx_li2.setChecked(list.get(i1).getFal());
        myzi.chx_li2.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                CheckBox  ff = (CheckBox) view;
                boolean checked = ff.isChecked();
                myzi.chx_li2.setChecked(checked);
                list.get(i1).setFal(checked);
                Toast.makeText(context,checked+"",Toast.LENGTH_SHORT).show();
               notifyDataSetChanged();
                Mypresenter mypresenter = new Mypresenter(null, null);
                mypresenter.ddss(bengowu,main2Activity);
            }
        });

        return view;
    }





    @Override
    public boolean isChildSelectable(int i, int i1) {
        return false;
    }

    class Myfu {
        CheckBox chx;
        TextView tv_lst;
    }
    class Myzi{
        CheckBox chx_li2;
      ImageView img_lvl;
      TextView  name_li2;
      TextView  paren;


    }

  


}