上拉加载下拉刷新，ListView刷新加载

package com.example.com.shangxialashuaxin;

import android.os.AsyncTask;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

import com.bawei.jane.mxlistview.view.XListView;
import com.google.gson.Gson;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;

public class MainActivity extends AppCompatActivity  {
String urldata="http://api.tianapi.com/social/?key=48a7d7193e11bd2dd4a683b6e2f90a4f&num=10";
private XListView xlv;

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

//1找到组件
xlv = findViewById(R.id.[b]xlv[/b]);
//进行配置
xlv.setPullRefreshEnable(true);//支持下拉刷新
xlv.setPullLoadEnable(true);//支持上拉加载

  //设置回掉监听接口
xlv.setXListViewListener(new XListView.IXListViewListener() {
@Override
public void onRefresh() {

}

@Override
public void onLoadMore() {

}

});

main布局文件中写： <com.bawei.jane.mxlistview.view.XListView android:layout_width="match_parent" android:layout_height="match_parent" android:id="@+id/xlv"/>
注：然后在xml文件中配置： <uses-permission android:name="android.permission.INTERNET"></uses-permission>
适配器没有改动
要导Gson包和universal-image-loader-1.9.3-with-sources.jar包
导mxlistview需要去配置，，如果studio中的版本过低，，需要下载高版本的

datas();

}

private void datas(){

mytask mytask = new
mytask();

mytask.execute();

}

class mytask
extends AsyncTask<String,Void,String> {

@Override protected
String doInBackground(String... strings) {

try {

URL url = new URL(urldata);

              HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection(); urlConnection.setRequestMethod("GET");

              urlConnection.setReadTimeout(5000);

               urlConnection.setConnectTimeout(5000);
if (urlConnection.getResponseCode()==200){

                  InputStream inputStream = urlConnection.getInputStream();

                  String s = statemstring(inputStream);
return s; }

           } catch (MalformedURLException e) { e.printStackTrace(); }
catch (IOException e) { e.printStackTrace(); }

           return null; }

      @Override
protected void onPostExecute(String s) {

          super.onPostExecute(s);

          if (s!=null){

               Gson gson = new Gson();

              Bean bean = gson.fromJson(s, Bean.class);

              Myadapter myadapter = new
Myadapter(MainActivity.this, bean.getNewslist());

              xlv.setAdapter(myadapter); }

      }

       public String statemstring(InputStream inputStream){

          ByteArrayOutputStream outputStream=null; outputStream =
new ByteArrayOutputStream();

           byte[]b=new byte[1024];
int len;
try { while
((len=inputStream.read(b))!=-1){

                  outputStream.write(b,0,len); } }
catch (IOException e) { e.printStackTrace(); }

           return outputStream.toString(); } }}