xListView(上拉刷新下拉加载，xml解析)中添加网络请求

package com.example.week2;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;

import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.xmlpull.v1.XmlPullParser;

import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.util.Log;
import android.util.Xml;

import com.example.week2.adapter.MyAdapter;
import com.example.week2.bean.News;
import com.example.week2.xlist.SimpleDataExample;
import com.example.week2.xlist.XListView;
import com.example.week2.xlist.XListView.IXListViewListener;
import com.koushikdutta.async.future.FutureCallback;
import com.koushikdutta.ion.Ion;

public class MainActivity extends Activity implements IXListViewListener {

protected static final String tag = "MainActivity";
int pageIndex = 1;
private String path;
private List<News> al;
private News n;
private MyAdapter adapter;
private XListView xlistView;

List<News> all = new ArrayList<News>();

Handler handler=new Handler(){
public void handleMessage(android.os.Message msg) {

};
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
xlistView = (XListView) findViewById(R.id.listView);
adapter = new MyAdapter(MainActivity.this);
xlistView.setAdapter(adapter);

// 添加XListView的上拉和下拉刷新监听器
xlistView.setPullLoadEnable(true);
xlistView.setPullRefreshEnable(true);
xlistView.setXListViewListener(this);
// 网络请求
getData();

}

private void getData() {
path = "http://www.oschina.net/action/api/news_list?catalog=1&pageIndex="
+ pageIndex + "&pageSize=20";
/*// ion jar包用于网络请求
Ion.with(getApplicationContext()).load(path).asString()
.setCallback(new FutureCallback<String>() {

@Override
public void onCompleted(Exception arg0, String result) {
// TODO Auto-generated method stub
if (arg0 != null) {
return;
}

pull(result);
// Log.i(tag, result);

// 要重新定义一个集合all，把解析出的集合al填入all中，不然会出现上拉加载时加载出来的数据把原集合覆盖diao
all.addAll(al);
adapter.addrest(all);
}
});*/
new Thread(){
public void run() {

try {
HttpClient client=new DefaultHttpClient();
HttpGet httpGet=new HttpGet(path);
HttpResponse httpResponse = client.execute(httpGet);
int statusCode = httpResponse.getStatusLine().getStatusCode();
Log.i(tag, statusCode+"=========");
if(statusCode==200){
InputStream inputStream = httpResponse.getEntity().getContent();
Log.i(tag, inputStream.toString()+"=========");
}
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
};
}.start();

}

// 解析XML
public void pull(String xml) {
try {
XmlPullParser newPullParser = Xml.newPullParser();
ByteArrayInputStream arrayInputStream = new ByteArrayInputStream(
xml.getBytes());
// 设置要解析的内容
newPullParser.setInput(arrayInputStream, "utf-8");
// 获取解析的事件类型
int eventType = newPullParser.getEventType();
while (eventType != XmlPullParser.END_DOCUMENT) {
// 获得标签的名字
String name = newPullParser.getName();

switch (eventType) {
// 开始接受文件(走一次)
case XmlPullParser.START_DOCUMENT:
al = new ArrayList<News>();
break;
case XmlPullParser.START_TAG:
if ("news".equals(name)) {
n = new News();
} else if ("id".equals(name)) {
String id = newPullParser.nextText();
n.id = id;
} else if ("title".equals(name)) {
String title = newPullParser.nextText();
n.title = title;
} else if ("body".equals(name)) {
String body = newPullParser.nextText();
n.body = body;
} else if ("commentCount".equals(name)) {
String commentCount = newPullParser.nextText();
n.commentCount = commentCount;
} else if ("author".equals(name)) {
String author = newPullParser.nextText();
n.author = author;
} else if ("authorid".equals(name)) {
String authorid = newPullParser.nextText();
n.authorid = authorid;
} else if ("pubDate".equals(name)) {
String pubDate = newPullParser.nextText();
n.pubDate = pubDate;
} else if ("newstype".equals(name)) {
if ("type".equals(name)) {
String type = newPullParser.nextText();
n.newstype.type = type;
} else if ("authoruid2".equals(name)) {
String authoruid2 = newPullParser.nextText();
n.newstype.authoruid2 = authoruid2;
}
}
break;

case XmlPullParser.END_TAG:
if ("news".equals(name)) {
al.add(n);

}
break;

}
eventType = newPullParser.next();
}

} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}

@Override
public void onRefresh() {
pageIndex = 1;
// 刷新的时候自动显示第一页的信息，并把加载出来的信息不显示， 就需要把getData() all.clear();这两个方法位置调换
getData();
all.clear();

SimpleDataExample.setFormat("dddddddddddd", getApplicationContext());
SimpleDataExample.getFormat("dddddddddddd", getApplicationContext(),
xlistView);

}

@Override
public void onLoadMore() {
pageIndex++;
getData();

SimpleDataExample.setFormat("dddddddddddd", getApplicationContext());
SimpleDataExample.getFormat("dddddddddddd", getApplicationContext(),
xlistView);
}
}