How to write xml file into Sd Card by get Value from Listview

[tawisak]

package demo.weatherforecast.main;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import org.xmlpull.v1.XmlSerializer;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.util.Log;
import android.util.Xml;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.Toast;

public class EditCity extends Activity {
	String xmlFilepath = "/sdcard/searchcity.xml";
	ArrayList<String> allListCity = new ArrayList<String>();	
	SimpleAdapter tempListAdapter;
	ArrayList<HashMap<String, String>> weatherlist = new ArrayList<HashMap<String, String>>();
	HashMap<String, String> map = new HashMap<String, String>();
	ListView listViewInfo;
	
	public void tempUpdate(){
		XmlHelper xmlHp = new XmlHelper();
		if(xmlHp.readAllCity().isEmpty()){
			
		}
		else{
			ArrayList<String> tmpweatherArr = new ArrayList<String>();
			WeatherHelper whp = new WeatherHelper();
			tmpweatherArr = xmlHp.readAllCity();
			Iterator<String> itr = tmpweatherArr.iterator();
			 String[] tmpResult = new String[3];
			while(itr.hasNext()){
				tmpResult = whp.getCurrentTemp(itr.next().toString());
				if(tmpResult[0].equalsIgnoreCase("error")){
					Toast.makeText(this, "Cannot retieve weather infomation from WebService", Toast.LENGTH_LONG).show();
				}
				else{
					Toast.makeText(this, "City "+ tmpResult[0] +" Lowest:"+ tmpResult[1] +" Highest:"+ tmpResult[2], Toast.LENGTH_LONG).show();
					map = new HashMap<String, String>();
					map.put("city", tmpResult[0]);
					map.put("low", tmpResult[1]);
					map.put("high", tmpResult[2]);
					weatherlist.add(map);
					//weatherArr.add(tmpResult[0]);
					listViewInfo.setAdapter(tempListAdapter);					
				}
			}
		}
	}
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
    	super.onCreate(savedInstanceState);
        setContentView(R.layout.edit);
        listViewInfo = (ListView)findViewById(R.id.listView1);
        tempListAdapter = new SimpleAdapter(this, weatherlist, R.layout.list_row,
	            new String[] {"city", "low", "high"}, new int[] {R.id.CITY_CELL, R.id.LOW_CELL, R.id.HIGH_CELL});
		listViewInfo.setAdapter(tempListAdapter);
		tempUpdate();	
		listViewInfo.setOnItemClickListener(new OnItemClickListener() {

			@Override
			public void onItemClick(AdapterView<?> a, View v,
					 final int position, long id) {
				// TODO Auto-generated method stub
				AlertDialog.Builder adb = new AlertDialog.Builder(
						EditCity.this);
				adb.setTitle("Delete?");
				adb.setMessage("Are you sure you want to delete ");
//				final int positionToRemove = position;
				adb.setNegativeButton("Cancel", null);
				adb.setPositiveButton("Ok",
						new AlertDialog.OnClickListener() {
							@Override
							public void onClick(DialogInterface dialog,
									int which) {
								// TODO Auto-generated method stub
								try
								{	
									weatherlist.remove(position);	
									listViewInfo.setAdapter(tempListAdapter);	
									System.out.println(position);								
									WriteIntoXML(weatherlist);
								}catch(Exception e)
								{
//									
								}
							}

							private void WriteIntoXML(ArrayList<HashMap<String, String>> weatherlist) {
								// TODO Auto-generated method stub
							 
							}
						});
				adb.show();
			}
		});
    }
}