public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View view = View.inflate(getContext(), R.layout.fragment1, null);
//获取资源ID
recyclerView = view.findViewById(R.id.recycleview);
allprice = view.findViewById(R.id.allprice);
quanxuan = view.findViewById(R.id.quanxuan);
quanxuan.setOnClickListener(this);
//得到p层
presenter = new Presenter();
presenter.attch(this);
presenter.getModel(url);
//布局管理器
LinearLayoutManager linearLayoutManager = new LinearLayoutManager(getContext());
linearLayoutManager.setOrientation(LinearLayoutManager.VERTICAL);
recyclerView.setLayoutManager(linearLayoutManager);

    //通过表名，拿到或者创建表
    DaoMaster.DevOpenHelper helper = new DaoMaster.DevOpenHelper(getContext(), "testDB");
    //拿到一个可读写的数据库对象
    SQLiteDatabase db = helper.getWritableDatabase();
    //拿到greendao的master对象
    DaoMaster daoMaster = new DaoMaster(db);
    //拿到session对象
    DaoSession daoSession = daoMaster.newSession();
    resuBeanDao = daoSession.getResuBeanDao();
    //判断网络
    networkConnected = NetWork.isNetworkConnected(getContext());
    if (!networkConnected){
        List<ResuBean> list = resuBeanDao.queryBuilder().build().list();
        MyAdapter myAdapter = new MyAdapter(list,getContext());
        recyclerView.setAdapter(myAdapter);
    }
    return view;

}


@Override
public void Presenter(String data) {
    if (networkConnected){
        Gson gson = new Gson();
        Resu resu = gson.fromJson(data, Resu.class);
        myRecycleViewAdapter = new MyRecycleViewAdapter(resu,getContext());
        recyclerView.setAdapter(myRecycleViewAdapter);
        for (int i = 0; i < resu.getResult().size(); i++) {
            ResuBean resuBean = new ResuBean();
            resuBean.setCommodityId(resu.getResult().get(i).getCommodityId());
            resuBean.setCommodityName(resu.getResult().get(i).getCommodityName());
            resuBean.setCount(resu.getResult().get(i).getCount());
            resuBean.setPic(resu.getResult().get(i).getPic());
            resuBean.setPrice(resu.getResult().get(i).getPrice());
            resuBeanDao.insertOrReplace(resuBean);

        }
        myRecycleViewAdapter.setListener(new MyRecycleViewAdapter.CallBack() {
            @Override
            public void callback(List<Resu.Result> list) {
                double totalPrice = 0;
                for (int i = 0; i < list.size(); i++) {
                    if (list.get(i).isCheck){
                        String price = list.get(i).getPrice();
                        Double price1 = Double.valueOf(price);
                        String count = list.get(i).getCount();
                        int numm = Integer.parseInt(count);
                        totalPrice = totalPrice+price1*numm;
                    }
                }
                allprice.setText("合计："+totalPrice);
            }

        });
    }
}
//解绑

@Override
public void onDestroy() {
    super.onDestroy();
    presenter.detch();
}

@Override
public void onClick(View view) {
    switch (view.getId()){
        case R.id.quanxuan:
            checkSeller(quanxuan.isChecked());
            myRecycleViewAdapter.notifyDataSetChanged();
            break;
            default:
    }
}

private void checkSeller(boolean b) {
    double totalPrie = 0;
    for (int i = 0; i < list.size(); i++) {
        list.get(i).setCheck(b);
        String price = list.get(i).getPrice();
        Double price1 = Double.valueOf(price);
        String count = list.get(i).getCount();
        int numm = Integer.parseInt(count);
        totalPrie = totalPrie+price1*numm;
    }
    if (b){
        allprice.setText("合计:"+totalPrie);
    }
}

}