download web service in xml file and bind particular tag to listview

Step 1> activity_main.xml:
<ScrollView
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity" >

<LinearLayout
           android:layout_width="match_parent"
        android:layout_height="match_parent"

        android:orientation="vertical">
<ListView
                  android:id="@+id/listView1"
           android:layout_width="match_parent"
           android:layout_height="407dp" >
       <LinearLayout/>

<ScrollView/>



Step 2>  download and Configure  ksoap2 library.jar file



Step 3> paste this code in MainActivity.java:

package com.example.rajutaskwebservice;

import java.io.File;

import java.util.ArrayList;

import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;

import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;

import android.app.Activity;
import android.os.Bundle;
import android.os.Environment;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;

public class MainActivity extends Activity {
ListView lv;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
lv=(ListView)findViewById(R.id.listView1);
Toast.makeText(getApplicationContext(),"welcome", Toast.LENGTH_LONG).show();


//first downlode web service in xml format
/*
  new Thread(){
public void run(){

try{

DefaultHttpClient client=new DefaultHttpClient();

//Toast.makeText(getApplicationContext(),"welcome1", Toast.LENGTH_LONG).show();
HttpGet get=new HttpGet(" give ur web service .php");


HttpResponse response=client.execute(get);
// Toast.makeText(getApplicationContext(),"welcome2", Toast.LENGTH_LONG).show();

//data reading
InputStream isr=response.getEntity().getContent();

String out_path=Environment.getExternalStorageDirectory()+"/out_put_file.xml";
//data writing
FileOutputStream fos=new FileOutputStream(out_path);


int i=isr.read();
String msg="";
// Toast.makeText(getApplicationContext(),"welcome3", Toast.LENGTH_LONG).show();

while(i!=-1){
msg=msg+(char)i;
fos.write(i); 

i=isr.read();
}


if(i==-1){
displayResult(msg);
}

 
// Toast.makeText(getApplicationContext(),msg, Toast.LENGTH_LONG).show();

}
catch(Exception e)
{

// Toast.makeText(getApplicationContext(),"fdfsdds", Toast.LENGTH_LONG).show();
}
 




}
}.start();


}


public void displayResult(String res){


Toast.makeText(getApplicationContext(), res, 2000).show();

}*/

// this is for binding particular tag to list view

try
{

         SAXParserFactory factory=SAXParserFactory.newInstance();
         SAXParser parse=factory.newSAXParser();
         String path=Environment.getExternalStorageDirectory()+"/out_put_file.xml";
         File f=new File(path);
        // String[] values=f.list();
         final ArrayList values=new ArrayList();
         parse.parse(f,new DefaultHandler()
         {
          boolean value=false;
          @Override
         public void characters(char[] ch, int start, int length)
         throws SAXException {
         // TODO Auto-generated method stub
         super.characters(ch, start, length);
         if(value)
         {
         values.add(new String(ch,start,length)); 
         }
         }
          public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException
          {
        
          if(qName.equalsIgnoreCase("source"))
          {
                            //here "source" is nothing but required tag which is to bind to listview

          value=true;
          }
          };
           public void endElement(String uri, String localName, String qName) throws SAXException
           {
           if(qName.equalsIgnoreCase("source"))
           {
           value=false;
           }
           };
         }
        );
        
  ArrayAdapter adapter=new ArrayAdapter(getApplicationContext(), android.R.layout.simple_list_item_1,values);
  lv.setAdapter(adapter);
   }
catch (Exception e)
{
// TODO: handle exception
}
}

}