Volley下载数据显示在RecyclerView上 需要注册和添加网络权限

package com.example.administrator.month_exam_20;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.util.Log;

import com.android.volley.Request;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.StringRequest;
import com.example.administrator.month_exam_20.demo.RecAdapter;
import com.google.gson.Gson;

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

public class Main2Activity extends AppCompatActivity {

private List<Bean> list =new ArrayList<>();
private RecyclerView rec;
private RecAdapter adapter;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);

rec = (RecyclerView) findViewById(R.id.rec);

LinearLayoutManager manager =new LinearLayoutManager(this);
manager.setOrientation(LinearLayoutManager.VERTICAL);
adapter = new RecAdapter(list,this);

rec.setLayoutManager(manager);
rec.setAdapter(adapter);
volletGet();

}

private void volletGet() {
String path ="http://apis.juhe.cn/idcard/index?key=bb97bfce9edee938aeac99cb503b76db&cardno=430524199106158690";

StringRequest request =new StringRequest(Request.Method.GET,path, new Response.Listener<String>() {
@Override
public void onResponse(String s) {
Log.e("MainActivity","==="+s);

Gson gson =new Gson();

Bean bean = gson.fromJson(s,
4000
Bean.class);
list.add(bean);
adapter.notifyDataSetChanged();
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError volleyError) {

}
});

MyApp.getHttpQueue().add(request);

}
}

package com.example.administrator.month_exam_20;import android.app.Application;import com.android.volley.RequestQueue;import com.android.volley.toolbox.Volley;/*** Created by Administrator on 2018/1/18.*/public class MyApp extends Application {public static RequestQueue queue;@Overridepublic void onCreate() {super.onCreate();queue= Volley.newRequestQueue(getApplicationContext());}public static RequestQueue getHttpQueue(){return queue;}}