Android Multi-Threaded Geocoding

This version uses multi-threading to run the geocoder.getFromLocationName() method in a separate thread for improved performance.

 <?xml version="1.0" encoding="utf-8"?>
<!-- This file is /res/layout/geocode.xml -->
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="fill_parent" android:layout_height="fill_parent">
  <LinearLayout android:layout_width="fill_parent"
       android:layout_alignParentBottom="true" android:layout_height="wrap_content"
       android:orientation="vertical">
       <EditText android:layout_width="fill_parent" android:id="@+id/location"
            android:layout_height="wrap_content" android:text="Enter location" />
       <Button android:id="@+id/geocodeBtn" android:layout_width="wrap_content"
            android:layout_height="wrap_content" android:text="Find Location" />
  </LinearLayout>
  <com.google.android.maps.MapView
       android:id="@+id/geoMap" android:clickable="true"
       android:layout_width="fill_parent" android:layout_height="320px"
       android:apiKey="XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX" />
</RelativeLayout>

 package com.gta;
import java.io.IOException;
import java.util.List;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.ProgressDialog;
import android.location.Address;
import android.location.Geocoder;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import com.google.android.maps.GeoPoint;
import com.google.android.maps.MapActivity;
import com.google.android.maps.MapView;
public class GeocodingThreadActivity extends MapActivity
{
Geocoder geocoder = null;
MapView mapView = null;
ProgressDialog progDialog=null;
List<Address> addressList=null;
@Override
protected boolean isLocationDisplayed() {
 return false;
}
@Override
protected boolean isRouteDisplayed() {
 return false;
}
@Override
protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.geocode);
 mapView = (MapView)findViewById(R.id.geoMap);
 mapView.setBuiltInZoomControls(true);
 // lat/long of IICP
 GeoPoint pt = new GeoPoint((int)(5.34079*1000000),(int)(100.28241*1000000));
 mapView.getController().setZoom(10);
 mapView.getController().setCenter(pt);
 Button geoBtn =(Button)findViewById(R.id.geocodeBtn);
 geocoder = new Geocoder(this);
 geoBtn.setOnClickListener(new OnClickListener(){
   @Override
   public void onClick(View view) {
     EditText loc = (EditText)findViewById(R.id.location);
     String locationName = loc.getText().toString();
     progDialog = ProgressDialog.show(GeocodingThreadActivity.this, "Processing...", "Finding Location...", true, false);
     findLocation(locationName);
   }});
}
private void findLocation(final String locationName)
{
 Thread thrd = new Thread()
 {
   public void run()
   {
     try {
       // do backgrond work
       addressList = geocoder.getFromLocationName(locationName, 5);
       //send message to handler to process results
       uiCallback.sendEmptyMessage(0);
     } catch (IOException e) {
       e.printStackTrace();
     }
   }
 };
 thrd.start();
}
// ui thread callback handler
private Handler uiCallback = new Handler()
{
 @Override
 public void handleMessage(Message msg)
 {
   progDialog.dismiss();
   if(addressList!=null && addressList.size()>0)
   {
     int lat = (int)(addressList.get(0).getLatitude()*1000000);
     int lng = (int)(addressList.get(0).getLongitude()*1000000);
     GeoPoint pt = new GeoPoint(lat,lng);
     mapView.getController().setZoom(15);
     mapView.getController().setCenter(pt);
   }
   else
   {
     Dialog foundNothingDlg = new AlertDialog.Builder(GeocodingThreadActivity.this)
      .setIcon(0)
      .setTitle("Failed to Find Location")
      .setPositiveButton("Ok", null)
      .setMessage("Location Not Found...")
     .create();
     foundNothingDlg.show();
   }
 }
};
}