Drink-Order-System-master/RestaurantFragment.java

package com.example.drink_order_system;

import static com.example.drink_order_system.Restaurant.all_restaurant;

import android.annotation.SuppressLint;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.SearchView;
import android.widget.TextView;

import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;

import com.google.gson.Gson;
import com.google.gson.reflect.TypeToken;

import java.io.IOException;
import java.lang.reflect.Type;
import java.util.ArrayList;
import java.util.List;

import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;

/**
 * A simple {@link Fragment} subclass.
 * Use the {@link RestaurantFragment#newInstance} factory method to
 * create an instance of this fragment.
 */
public class RestaurantFragment extends Fragment {
    private ArrayList<Restaurant> restaurant_array = new ArrayList<Restaurant>();
    private RestaurantAdapter Adapter;
    // the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
    private static final String ARG_PARAM1 = "param1";
    private static final String ARG_PARAM2 = "param2";
    private LinearLayoutManager llM;
    private SearchView searchView;
    private Context mContext = this.getActivity();
    private RecyclerView listView;
    // TODO: Rename and change types of parameters
    private String mParam1;
    private String mParam2;
    private String userName;
    @SuppressLint("ValidFragment")
    public RestaurantFragment(String userName) {
        // Required empty public constructor
        this.userName=userName;
    }
    public RestaurantFragment() {
        // Required empty public constructor
    }
    public static RestaurantFragment newInstance(String param1, String param2) {
        RestaurantFragment fragment = new RestaurantFragment();
        Bundle args = new Bundle();
        args.putString(ARG_PARAM1, param1);
        args.putString(ARG_PARAM2, param2);
        fragment.setArguments(args);
        return fragment;
    }


    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {

        // Inflate the layout for this fragment
        View view = inflater.inflate(R.layout.fragment_restaurant, container, false);
        SearchView mSearch = (SearchView) view.findViewById(R.id.my_search);
        listView = (RecyclerView) view.findViewById(R.id.RV_restaurant);
        searchView = (SearchView) view.findViewById(R.id.my_search);
        initData();
        llM = new LinearLayoutManager(this.getActivity());
        listView.setLayoutManager(llM);
        Adapter = new RestaurantAdapter(inflater, all_restaurant);
        Adapter.setOnItemClickListener(new RestaurantAdapter.OnItemClickListener() {
            @Override
            public void onItemClick(View view, int position) {
                // 获取点击的餐厅对象
                Restaurant clickedRestaurant = all_restaurant.get(position);
                String restaurantName = clickedRestaurant.get_name(); // 获取餐厅名称

                // 创建 Intent 并传递餐厅名称到 OrderActivity
                Intent intent = new Intent(getActivity(), OrderActivity.class);
                intent.putExtra("userName", userName);
                intent.putExtra("restaurantName", restaurantName);

                startActivity(intent);
            }
        });
        listView.setAdapter(Adapter);

        searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
            @Override
            public boolean onQueryTextSubmit(String query) {
                return false;
            }

            // 在搜索文本变化监听中更新数据源
            @Override
            public boolean onQueryTextChange(String queryText) {
                ArrayList<Restaurant> filteredRestaurants = new ArrayList<>();
                for (Restaurant restaurant : restaurant_array) {
                    if (restaurant.get_name().contains(queryText)) {
                        filteredRestaurants.add(restaurant);
                    }
                }
                // 更新适配器数据源
                getActivity().runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        Adapter.setRestaurantList(filteredRestaurants);
                    }
                });
                return true;
            }

        });
        return view;
    }
    private void initData() {
        String url="http://192.168.43.176:8080/warehouse_management_system_war_exploded/getStore";
//        new Restaurant("a", 100,
//                "川菜馆", url);
        restaurant_array = all_restaurant;

        OkHttpClient client = new OkHttpClient();
        Request request = new Request.Builder()
                .url(url)
                .build();

        client.newCall(request).enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {
                e.printStackTrace();
                Log.i("responseDataR","fail");
                // 处理请求失败
            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {
                if (response.isSuccessful()) {
                    String responseData = response.body().string();
                    Log.i("responseDataR",responseData);
                    Gson gson = new Gson();
                    Type restaurantListType = new TypeToken<ArrayList<Restaurant>>() {}.getType();
                    final ArrayList<Restaurant> restaurants = gson.fromJson(responseData, restaurantListType);
                    getActivity().runOnUiThread(() -> {
                        all_restaurant.clear();
                        all_restaurant.addAll(restaurants);
                        Adapter.notifyDataSetChanged();
                    });
                } else {
                    // 处理请求失败
                }
            }
        });
    }
}