mainActivity

public class MainActivity extends AppCompatActivity implements MainView {
    String url="http://172.17.8.100/ks/product/getCarts?uid=51";
    private MainPresenter mainPresenter;
    private List<Bean> data1;
    private RecyclerView recyclerView;
    private ShopCarAdapter adapter;
    private CheckBox checkbox_all;
    private TextView text_jq;
    private TextView jiesuan;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mainPresenter = new MainPresenterIml(new MainModelIml(),this);
        text_jq = findViewById(R.id.text_jq);
        jiesuan = findViewById(R.id.jiesuan);
        recyclerView = findViewById(R.id.recycler);
        checkbox_all = findViewById(R.id.checkbox_all);
        //创建适配器
        adapter = new ShopCarAdapter(this);
        //设置布局管理器
        LinearLayoutManager manager=new LinearLayoutManager(this);
        manager.setOrientation(LinearLayoutManager.VERTICAL);
        //设置布局管理器
        recyclerView.setLayoutManager(manager);
        recyclerView.setAdapter(adapter);
        //全选反选
        checkbox_all.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
               //定义选中
                boolean checked = checkbox_all.isChecked();
                //定义总价格
                float priceall=0;
                //定义总数量
                int numall=0;
                for (int i = 0; i <data1.size() ; i++) {
                    data1.get(i).setCheck(checked);
                    List<Listss> list = data1.get(i).getList();
                    for (int j=0;j<list.size();j++){
                        list.get(j).setCheck(checked);
                        if (checked){
                            String price = list.get(j).getPrice();
                            String num = list.get(j).getNum();
                            float price1 = Float.parseFloat(price);
                            int num1 = Integer.parseInt(num);
                            priceall=priceall+price1*num1;
                            numall=numall+num1;
                        }else{
                            priceall=0;
                            numall=0;
                        }
                    }
                }
                text_jq.setText(priceall+"");
                jiesuan.setText("去结算("+numall+")");
                adapter.setlist(data1);
            }
        });
        //商家选中计算价钱
        adapter.setOnCallBackListener(new ShopCarAdapter.OnCallBackListener() {
            @Override
            public void chang(List<Bean> data1) {
                float allprice=0;
                int allnum=0;
                for (int i = 0; i <data1.size() ; i++) {
                    boolean check = data1.get(i).isCheck();
                    if (check){//商家选中
                        List<Listss> list = data1.get(i).getList();
                        for (int j=0;j<list.size();j++){
                            String price1 = list.get(j).getPrice();
                            String num1= list.get(j).getNum();
                            int num2 = Integer.parseInt(num1);
                            float price2 = Float.parseFloat(price1);
                            allprice=allprice+price2*num2;
                            allnum=allnum+num2;
                        }
                    }else{//商家未选中商品选中
                        List<Listss> list = data1.get(i).getList();
                        for (int j=0;j<list.size();j++){
                            if (list.get(j).isCheck()){
                                String price1 = list.get(j).getPrice();
                                String num1= list.get(j).getNum();
                                int num2 = Integer.parseInt(num1);
                                float price2 = Float.parseFloat(price1);
                                allprice=allprice+price2*num2;
                                allnum=allnum+num2;
                            }
                        }
                    }
                }
                text_jq.setText(allprice+"");
                jiesuan.setText("去结算("+allnum+")");
            }
        });

        mainPresenter.shopcar(0,url);
    }
    @Override
    protected void onDestroy() {
        super.onDestroy();
    }

    @Override
    public void success(int type, String data) {
        if (type==0){
            Gson gson=new Gson();
            Json json = gson.fromJson(data, Json.class);
            data1 = json.getData();
            data1.remove(0);
            adapter.setlist(data1);
        }

    }

    @Override
    public void fail(String error) {

    }
}