Android,Getting data from server

package com.Valluru;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import android.app.ListActivity;
import android.content.Intent;
import android.net.ParseException;
import android.net.Uri;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;

public class Food extends ListActivity {
    String result = null;
    InputStream is = null;
    StringBuilder sb=null;
       List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
    ListView list1;

    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        list1 = (ListView) findViewById(android.R.id.list);

        //http post
        try{
            HttpClient httpclient = new DefaultHttpClient();
            HttpPost httppost = new HttpPost("http://10.0.2.2/atm.php");
            HttpResponse response = httpclient.execute(httppost);
            HttpEntity entity = response.getEntity();
            is = entity.getContent();
        }catch(Exception e){
            Log.e("log_tag", "Error in http connection"+e.toString());
        }
   
        //convert response to string
        try{
            BufferedReader reader = new BufferedReader(new InputStreamReader(is,"iso-8859-1"),8);
            sb = new StringBuilder();
            sb.append(reader.readLine() + "\n");
            String line="0";
        
            while ((line = reader.readLine()) != null) {
                sb.append(line + "\n");
            }
           
            is.close();
            result=sb.toString();
           
        }catch(Exception e){
            Log.e("log_tag", "Error converting result "+e.toString());
        }

        //paring data
        String fd_id;
        String fd_name;
        try{
          JSONArray jArray = new JSONArray(result);
          JSONObject json_data=null;
         
          for(int i=0;i<jArray.length();i++){
                json_data = jArray.getJSONObject(i);
                fd_id =json_data.getString("ATM_ID");
               
                fd_name = json_data.getString("ATM_NAME");
                nameValuePairs.add(new list<String, String>(fd_id, fd_name));
          }
         
          list1.setAdapter(new ArrayAdapter<NameValuePair>(getApplicationContext(),android.R.layout.simple_expandable_list_item_1,nameValuePairs));
         
        }catch(JSONException e1){
            Toast.makeText(getBaseContext(), "No ATM Found", Toast.LENGTH_LONG).show();
        }catch (ParseException e1){
            e1.printStackTrace();
        }
    }
}




//list.java

package com.Valluru;

import org.apache.http.NameValuePair;

import android.R.integer;

public class list<T,V> implements NameValuePair {
    T data;
    V text;
   
    public list(T data, V text)
    {
        this.data = data;
        this.text = text;
    }
   
    @Override
    public String toString(){
        return text.toString();
    }

    @Override
    public String getName() {
        return (String) data;
    }

    @Override
    public String getValue() {
        return (String) text;
    }
   
   

}


// PHP code

<?php
  mysql_connect("localhost","root");
  mysql_select_db("FOOD");
  $sql=mysql_query("select * from FOOD where FOOD_NAME like '%'");
  while($row=mysql_fetch_assoc($sql)) $output[]=$row;
  print(json_encode($output));
  mysql_close();
?>