RecyclerView没有出现且应用已停止

Question

我尝试通过API从数据库中检索数据，并将其调出到recyclerview中，但是没有出现recyclerview。有人可以帮我吗

片段首页

package com.example.hp.retailmakanan;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.design.widget.BottomNavigationView;
import android.support.v4.app.Fragment;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.JsonArrayRequest;
import com.android.volley.toolbox.Volley;
import com.example.hp.retailmakanan.Model.MenuModel;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import java.util.ArrayList;
import java.util.List;

public class FragHome extends Fragment {
    RecyclerView recV;
    BottomNavigationView top_navigation;
    HomeAdapter listAdapter;
    List<MenuModel>  listMenu= new ArrayList<>();

    private BottomNavigationView.OnNavigationItemSelectedListener onNavigationItemSelectedListener
        = new BottomNavigationView.OnNavigationItemSelectedListener() {
        @Override
        public boolean onNavigationItemSelected(@NonNull MenuItem menuItem) {
            Fragment sfragment = null;
            switch (menuItem.getItemId()) {
                case R.id.nav_noodle:
                    recV.setAdapter(listAdapter);
                    break;
                case R.id.nav_beverage:
                    recV.setAdapter();
                    break;
                case R.id.nav_toping:
                    recV.setAdapter();
                    break;
                case R.id.nav_cari:
                    recV.setAdapter();
                    break;
            }
            return false;
        }
    };

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View v =  inflater.inflate(R.layout.act_home, container, false);
        recV = (RecyclerView) v.findViewById(R.id.rec_ramen);
        LinearLayoutManager layoutManager = new LinearLayoutManager(getActivity());
        recV.setLayoutManager(layoutManager);
        getData();
        listAdapter = new HomeAdapter(listMenu, this.getContext());
        recV.setAdapter(listAdapter);
        top_navigation = (BottomNavigationView) v.findViewById(R.id.top_nav);
        top_navigation.setOnNavigationItemSelectedListener(onNavigationItemSelectedListener);

        return v;

    }

这是我用来从数据库获取数据的代码。

private void getData() {
            String url ="https://waggish-requisition.000webhostapp.com/GetAllMenu.php";
            JsonArrayRequest jsonArrayRequest = new JsonArrayRequest(url, new Response.Listener<JSONArray>() {
                @Override
                public void onResponse(JSONArray response) {
                    listMenu.clear();
                    for (int i = 0; i < response.length(); i++) {
                        try {
                            Log.d("menu",response.toString());
                            JSONObject jsonObject = response.getJSONObject(i);
                            String id_menu = jsonObject.getString("id");
                            String nama_menu = jsonObject.getString("nama_menu");
                            String deskripsi = jsonObject.getString("deskripsi");
                            int harga = jsonObject.getInt("harga");

                            MenuModel menus = new MenuModel(id_menu,nama_menu,deskripsi,harga);
                            listMenu.add(menus);
                            //System.out.println(menus);
                            //Toast.makeText(this,"Download data "+i,Toast.LENGTH_SHORT).show();
                            listAdapter.notifyDataSetChanged();
                        } catch (JSONException e) {
                            e.printStackTrace();
                            Log.d("menu",e.toString());
                        }


                    }

                }
            }, new Response.ErrorListener() {
                @Override
                public void onErrorResponse(VolleyError error) {
                    Log.e("Volley", error.toString());
                }
            });
            RequestQueue requestQueue = Volley.newRequestQueue(getActivity());
            requestQueue.add(jsonArrayRequest);
        }

    }

HomeAdapter

package com.example.hp.retailmakanan;

import android.content.Context;
import android.support.annotation.NonNull;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;

import com.example.hp.retailmakanan.Model.MenuModel;

import java.util.Arrays;
import java.util.List;

public class HomeAdapter extends RecyclerView.Adapter {

    private List<MenuModel> menus;
    private Context context;

    public HomeAdapter(List<MenuModel> menus, Context context) {
        this.context = context;
        this.menus = menus;
    }

    @NonNull
    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
        View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.recv_desain, viewGroup, false);
        return new ListViewHolder(view);
    }


    @Override
    public void onBindViewHolder(@NonNull RecyclerView.ViewHolder viewHolder, int pos) {
        ((ListViewHolder) viewHolder).bindView(pos);
    }

    @Override
    public int getItemCount() {
        return menus.size();
    }



    private class ListViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener{
        private TextView mText,txt2, txt3;;

        public ListViewHolder(View itemView){
            super(itemView);
            mText = (TextView) itemView.findViewById(R.id.text_item);
            txt2 = (TextView) itemView.findViewById(R.id.text_item2);
            txt3 = (TextView) itemView.findViewById(R.id.textView3);
            itemView.setOnClickListener(this);
        }

        public void bindView (int pos){
            mText.setText(DataMenu.harga[pos]);
            txt2.setText(menus.get(pos).getDeskripsi());
            txt3.setText(menus.get(pos).getHarga());
        }

        @Override
        public void onClick(View v) {

        }
    }
}

E / ChromeSync表示logcat中发生错误：[Sync，SyncAdapter]无法同步。     pub：gxd：BadAuthentication