异步交互解析xml文件

代码列表：

MainActivity.class:

package com.example.yuekao_one_try;

import java.util.List;

import com.example.vo.Item;
import com.example.vo.Root;
import com.google.gson.Gson;
import com.thoughtworks.xstream.XStream;

import android.os.AsyncTask;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.widget.GridView;
import android.widget.ListView;

public class MainActivity extends Activity {
     private String URL = "http://apis.juhe.cn/goodbook/catalog?key=9d6ef8c31647a206e05fcaff70527182&dtype=xml";
    private ListView list_view;
    private List<Item> list;
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        list_view=(ListView) findViewById(R.id.list_view);
        new Thread(){
            public void run() {
                
                new Asyn().execute(URL);
            };
        }.start();
        
    }

    private class Asyn extends AsyncTask<String, Integer, String>{

        private  String s;
        protected String doInBackground(String... params) {
            // TODO Auto-generated method stub
            
            s=Networkutil.httpol(URL);
            
            return s;
        }
        @Override
        protected void onPostExecute(String result) {
            // TODO Auto-generated method stub
            
            
            XStream xStream=new XStream();
            xStream.processAnnotations(Root.class);
            Root root=(Root) xStream.fromXML(result);
            List<Item> list=root.getResult().getItem();
                Mybase base=new Mybase(list, getApplicationContext());
                list_view.setAdapter(base);
        }
        
    }

}  

NetworkUtil.class:

package com.example.yuekao_one_try;

import java.io.IOException;

import org.apache.http.HttpEntity;
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.client.params.HttpClientParams;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;
import org.apache.http.util.EntityUtils;

import android.os.DeadObjectException;

public class Networkutil {
        public static String httpol(String url){
            String result="";
            
            HttpGet httpGet=new HttpGet(url);
            //设置请求参数
            HttpParams parmars=new BasicHttpParams();
         HttpConnectionParams.setConnectionTimeout(parmars, 5000);
//            HttpConnectionParams.setSoTimeout(parmars, 5*100);
            HttpClient httpClient=new DefaultHttpClient(parmars);
            try {
                HttpResponse httpResponse=httpClient.execute(httpGet);
                int len=httpResponse.getStatusLine().getStatusCode();
                if(len==200){
                    HttpEntity httpEntity=httpResponse.getEntity();
                    result=EntityUtils.toString(httpEntity, "utf-8");
                    
                }
                
                
            } catch (ClientProtocolException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            
            
            
            
            
            
            
            
            return result;
        }
}

vo类：
Root.class:

package com.example.vo;

import com.thoughtworks.xstream.annotations.XStreamAlias;

@XStreamAlias("root")
public class Root {
    private String resultcode;
    private String reason;
    private Mylist result;
    private String error_code;
    public String getResultcode() {
        return resultcode;
    }
    public void setResultcode(String resultcode) {
        this.resultcode = resultcode;
    }
    public String getReason() {
        return reason;
    }
    public void setReason(String reason) {
        this.reason = reason;
    }
    public Mylist getResult() {
        return result;
    }
    public void setResult(Mylist result) {
        this.result = result;
    }
    public String getError_code() {
        return error_code;
    }
    public void setError_code(String error_code) {
        this.error_code = error_code;
    }
    
    
}

Mylist.class:

package com.example.vo;

import java.util.List;

import com.thoughtworks.xstream.annotations.XStreamAlias;
import com.thoughtworks.xstream.annotations.XStreamImplicit;

@XStreamAlias("result")
public class Mylist {
@XStreamImplicit(itemFieldName="item")
private List<Item> item;

public List<Item> getItem() {
    return item;
}

public void setItem(List<Item> item) {
    this.item = item;
}

}

Item.class:

package com.example.vo;

import com.thoughtworks.xstream.annotations.XStreamAlias;

@XStreamAlias("item")
public class Item {
private String id;
private String catalog;
public String getId() {
    return id;
}
public void setId(String id) {
    this.id = id;
}
public String getCatalog() {
    return catalog;
}
public void setCatalog(String catalog) {
    this.catalog = catalog;
}

}