show

    public class MyApp extends Application{
    
        private static MyApp app;
        private DaoSession daoSession;
    
        @Override
        public void onCreate() {
            super.onCreate();
            Fresco.initialize(this);
            app = MyApp.this;
    
            //创建
            DaoMaster.DevOpenHelper helper = new DaoMaster.DevOpenHelper(this, "chenlin");
            SQLiteDatabase db = helper.getWritableDatabase();
            DaoMaster master = new DaoMaster(db);
            daoSession = master.newSession();
    
        }
        public static MyApp getinstance(){
            if(app == null){
                app = new MyApp();
            }
            return app;
        }
        public DaoSession daoSession(){
            return daoSession;
        }
    }
    ==================================moudle=============================================
    package com.example.dell.am0928.di;
    
    import com.example.dell.am0928.app.MyApp;
    import com.example.dell.am0928.bean.User;
    import com.example.dell.am0928.bean.UserDao;
    import com.example.dell.am0928.bean.news;
    import com.example.dell.am0928.utils.HttpUtils;
    import com.google.gson.Gson;
    
    import java.io.IOException;
    import java.util.ArrayList;
    import java.util.List;
    
    import okhttp3.Call;
    import okhttp3.Callback;
    import okhttp3.Request;
    import okhttp3.Response;
    
    public class Moudleimp implements Icontract.imoudle{
        private String path="http://atp.fulishe.com/ClientApi/category.php?api_version=1.0&act=search_category_goods_list&c_id=35&order_price=0&page_num=20&page=1&debug=true&client_id=null";
        private String path1="https://www.zhaoapi.cn/ad/getAd";
        private String path_shop="https://www.zhaoapi.cn/product/getCarts?uid=71";
        private List<User> users;
    
        @Override
        public void requestdata(final callisten callisten) {
            final UserDao userDao = MyApp.getinstance().daoSession().getUserDao();
            users = userDao.loadAll();
            if (users.size()>0){
                callisten.requestinfo(users);
                return;
            }
            HttpUtils.getinstan().getdata(path, new Callback() {
                @Override
                public void onFailure(Call call, IOException e) {
    
                }
    
                @Override
                public void onResponse(Call call, Response response) throws IOException {
                    String s = response.body().string();
                    Gson gson = new Gson();
                    news news = gson.fromJson(s, news.class);
                    List<com.example.dell.am0928.bean.news.InfoBean.GoodsBean> goods = news.getInfo().getGoods();
                    ArrayList<User> list = new ArrayList<>();
                    for (int i = 0; i < goods.size(); i++) {
                        String goods_name = goods.get(i).getGoods_name();
                        String shop_price = goods.get(i).getShop_price();
                        String thumb = goods.get(i).getThumb();
                        User user = new User();
                        user.setGoods_name(goods_name);
                        user.setShop_price(shop_price);
                        user.setThumb(thumb);
                        list.add(user);
                    }
                    callisten.requestinfo(list);
                    userDao.insertInTx(list);
                }
            });
        }
    
    
    
        @Override
        public void requestdata1(final callisten callisten) {
            HttpUtils.getinstan().getdata(path1, new Callback() {
                @Override
                public void onFailure(Call call, IOException e) {
    
                }
    
                @Override
                public void onResponse(Call call, Response response) throws IOException {
                    String s1 = response.body().string();
                    callisten.requestinfo1(s1);
                }
            });
        }
    
        @Override
        public void requestdata_shop(final callisten callisten) {
    
            HttpUtils.getinstan().getdata(path_shop, new Callback() {
                @Override
                public void onFailure(Call call, IOException e) {
    
                }
    
                @Override
                public void onResponse(Call call, Response response) throws IOException {
                    String s_shop = response.body().string();
                    callisten.requestinfo_shop(s_shop);
                }
            });
        }
    }
===========================User=======================
package com.example.dell.am0928.bean;

import org.greenrobot.greendao.annotation.Entity;
import org.greenrobot.greendao.annotation.Id;
import org.greenrobot.greendao.annotation.Property;
import org.greenrobot.greendao.annotation.Generated;

@Entity
public class User {
    @Id(autoincrement = true)
    Long id;
    @Property
    String goods_name;
    @Property
    String shop_price;
    @Property
    String thumb;
    @Generated(hash = 2019766772)
    public User(Long id, String goods_name, String shop_price, String thumb) {
        this.id = id;
        this.goods_name = goods_name;
        this.shop_price = shop_price;
        this.thumb = thumb;
    }
    @Generated(hash = 586692638)
    public User() {
    }
    public Long getId() {
        return this.id;
    }
    public void setId(Long id) {
        this.id = id;
    }
    public String getGoods_name() {
        return this.goods_name;
    }
    public void setGoods_name(String goods_name) {
        this.goods_name = goods_name;
    }
    public String getShop_price() {
        return this.shop_price;
    }
    public void setShop_price(String shop_price) {
        this.shop_price = shop_price;
    }
    public String getThumb() {
        return this.thumb;
    }
    public void setThumb(String thumb) {
        this.thumb = thumb;
    }
}