如何使用xstream解析网络上请求的xml文件，解析并展示

//主界面

package com.example.mounth_test;

import java.util.ArrayList;

import java.util.List;

import com.example.adapter.FragAdapter;

import android.app.Activity;

import android.graphics.Color;

import android.os.Bundle;

import android.support.v4.app.Fragment;

import android.support.v4.app.FragmentActivity;

import android.support.v4.view.ViewPager;

import android.support.v4.view.ViewPager.OnPageChangeListener;

import android.view.Menu;

import android.view.MenuItem;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.RadioButton;

public class MainActivity extends FragmentActivity implements OnClickListener,OnPageChangeListener{

//定义控件

private RadioButton radio1,radio2,radio3,radio4;

private ViewPager mViewPager;

private List<Fragment> fragments;

//定义单个fragment控件

private ContentFragment01 mContentFragment01;

private ContentFragment02 mContentFragment02;

private ContentFragment03 mContentFragment03;

private ContentFragment04 mContentFragment04;

private FragAdapter adapter;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

//加载fragment控件

intodata();

//获取控件id

inteview();

//设置默认值

mViewPager.setCurrentItem(0);

select(0);

}

private void intodata() {

// TODO Auto-generated method stub

fragments=new ArrayList<Fragment>();

fragments.add(new ContentFragment01());

fragments.add(new ContentFragment02());

fragments.add(new ContentFragment03());

fragments.add(new ContentFragment04());

}

//该方法，，获取控件id

private void inteview() {

// TODO Auto-generated method stub

mViewPager=(ViewPager) findViewById(R.id.myviewpager);

radio1=(RadioButton) findViewById(R.id.radio_btn1);

radio2=(RadioButton) findViewById(R.id.radio_btn2);

radio3=(RadioButton) findViewById(R.id.radio_btn3);

radio4=(RadioButton) findViewById(R.id.radio_btn4);

radio1.setOnClickListener(this);

radio2.setOnClickListener(this);

radio3.setOnClickListener(this);

radio4.setOnClickListener(this);

mViewPager.setOnPageChangeListener(this);

adapter=new FragAdapter(getSupportFragmentManager(),fragments);

//添加到适配器上

mViewPager.setAdapter(adapter);

}

/**

*

* 点击titile 监听

* @param v

*/

@Override

public void onClick(View v) {

// TODO Auto-generated method stub

switch (v.getId()) {

case R.id.radio_btn1:

mViewPager.setCurrentItem(0);

break;

case R.id.radio_btn2:

mViewPager.setCurrentItem(1);

break;

case R.id.radio_btn3:

mViewPager.setCurrentItem(2);

break;

case R.id.radio_btn4:

mViewPager.setCurrentItem(3);

break;

}

}

//viewpager页面滑动监听，，滑动页面，，radiobutton的字体颜色变为绿色

@Override

public void onPageScrollStateChanged(int arg0) {

// TODO Auto-generated method stub

}

@Override

public void onPageScrolled(int arg0, float arg1, int arg2) {

// TODO Auto-generated method stub

}

@Override

public void onPageSelected(int arg0) {

select(arg0);

}

//滑动页面，改变字体颜色

private void select(int arg0) {

// TODO Auto-generated method stub

switch (arg0) {

case 0:

radio1.setTextColor(Color.GREEN);

radio2.setTextColor(Color.BLACK);

radio3.setTextColor(Color.BLACK);

radio4.setTextColor(Color.BLACK);

break;

case 1:

radio1.setTextColor(Color.BLACK);

radio2.setTextColor(Color.GREEN);

radio3.setTextColor(Color.BLACK);

radio4.setTextColor(Color.BLACK);

break;

case 2:

radio1.setTextColor(Color.BLACK);

radio2.setTextColor(Color.BLACK);

radio3.setTextColor(Color.GREEN);

radio4.setTextColor(Color.BLACK);

break;

case 3:

radio1.setTextColor(Color.BLACK);

radio2.setTextColor(Color.BLACK);

radio3.setTextColor(Color.BLACK);

radio4.setTextColor(Color.GREEN);

break;

}

}

}

//单个fragment控件

package com.example.mounth_test;

import java.util.List;

import com.example.adapter.MyAdapter;

import com.example.vo.New;

import com.example.vo.News;

import com.example.vo.NewsObject;

import com.handmark.pulltorefresh.library.PullToRefreshBase;

import com.handmark.pulltorefresh.library.PullToRefreshListView;

import com.handmark.pulltorefresh.library.PullToRefreshBase.OnLastItemVisibleListener;

import com.handmark.pulltorefresh.library.PullToRefreshBase.OnRefreshListener;

import com.lidroid.xutils.HttpUtils;

import com.lidroid.xutils.db.sqlite.CursorUtils.FindCacheSequence;

import com.lidroid.xutils.exception.HttpException;

import com.lidroid.xutils.http.ResponseInfo;

import com.lidroid.xutils.http.callback.RequestCallBack;

import com.lidroid.xutils.http.client.HttpRequest.HttpMethod;

import com.thoughtworks.xstream.XStream;

import android.os.Bundle;

import android.support.annotation.Nullable;

import android.support.v4.app.Fragment;

import android.text.format.DateUtils;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.ListView;

import android.widget.Toast;

public class ContentFragment01 extends Fragment {

//定义控件

private PullToRefreshListView mPullRefreshListView;

private List<News> list_new;

//定义适配器

private MyAdapter adapter;

int index=1;

@Override

public View onCreateView(LayoutInflater inflater,

@Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {

// TODO Auto-generated method stub

View view=LayoutInflater.from(getActivity()).inflate(R.layout.contentfragment, null);

//获取控件id

mPullRefreshListView=(PullToRefreshListView) view.findViewById(R.id.mylistview);

//调用联网方法

getinfo();

mPullRefreshListView.setOnRefreshListener(new OnRefreshListener<ListView>() {

@Override

public void onRefresh(PullToRefreshBase<ListView> refreshView) {

// TODO Auto-generated method stub

String label = DateUtils.formatDateTime(getActivity(), System.currentTimeMillis(),

DateUtils.FORMAT_SHOW_TIME | DateUtils.FORMAT_SHOW_DATE | DateUtils.FORMAT_ABBREV_ALL);

refreshView.getLoadingLayoutProxy().setLastUpdatedLabel(label);//3.刷新界面处理代理,显示新的时间

//定义联网请求方法

getinfo();

}

});

//5.设置上拉加载处理

mPullRefreshListView.setOnLastItemVisibleListener(new OnLastItemVisibleListener() {

@Override

public void onLastItemVisible() {

getinfo();

}

});

return view;

}

/**

*

*

*联网请求。。获取网络上的xml文件，解析并展示

*

*/

private void getinfo() {

// TODO Auto-generated method stub

HttpUtils httpUtils=new HttpUtils();

//定义接口

String url="http://www.oschina.net/action/api/news_list";

httpUtils.send(HttpMethod.GET, url, new RequestCallBack<String>() {

@Override

public void onFailure(HttpException arg0, String arg1) {

// TODO Auto-generated method stub

}

@Override

public void onSuccess(ResponseInfo<String> arg0) {

// TODO Auto-generated method stub

String xmldata=arg0.result;

XStream xStream=new XStream();

xStream.processAnnotations(NewsObject.class);

NewsObject newsObject=(NewsObject) xStream.fromXML(xmldata);

list_new=newsObject.getNewslist().getNews();

adapter=new MyAdapter(getActivity(),list_new);

mPullRefreshListView.setAdapter(adapter);

}

});

// adapter.notifyDataSetChanged();

index= index+1;

// Call onRefreshComplete when the list has been refreshed.

mPullRefreshListView.onRefreshComplete();

}

}

//布局文件

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="match_parent"

android:layout_height="match_parent" >

<com.handmark.pulltorefresh.library.PullToRefreshListView

android:id="@+id/mylistview"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

android:cacheColorHint="#00000000"

android:divider="#19000000"

android:dividerHeight="4dp"

android:fadingEdge="none"

android:fastScrollEnabled="false"

android:footerDividersEnabled="false"

android:headerDividersEnabled="false"

android:smoothScrollbar="true" />

</RelativeLayout>

//配置文件

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

package="com.example.mounth_test"

android:versionCode="1"

android:versionName="1.0" >

<uses-sdk

android:minSdkVersion="14"

android:targetSdkVersion="14" />

<uses-permission android:name="android.permission.INTERNET"/>

<application

android:allowBackup="true"

android:icon="@drawable/ic_launcher"

android:label="@string/app_name"

android:theme="@style/AppTheme" >

<activity

android:name=".MainActivity"

android:label="PtR ListView"

>

<intent-filter>

<action android:name="android.intent.action.MAIN" />

<category android:name="android.intent.category.LAUNCHER" />

</intent-filter>

</activity>

</application>

</manifest>