AndroidManifest.xml

{code class="brush:xml;highlight:[4,5]"}

<?xml version="1.0" encoding="UTF-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="net.learn2develop.GPS">
    <uses-permission
        android:name="android.permission.ACCESS_FINE_LOCATION" />
    <application>
         <activity android:name=".GPS" android:label="GPS">
            <intent-filter>
                <action android:name="android.intent.action.MAIN"/>
                <category android:name="android.intent.category.LAUNCHER"/>
            </intent-filter>
        </activity>
    </application>
</manifest>

{/code}

GPS.java

{code}

package com.losremediosinformaticos.GPS;

import android.app.Activity;
import android.content.Context;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.widget.Toast;

public class GPS extends Activity {
    private LocationManager lm;
    private LocationListener locationListener;

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle icicle) {
        super.onCreate(icicle);
        setContentView(R.layout.main);

        //---use the LocationManager class to obtain GPS locations---
        lm = (LocationManager)
            getSystemService(Context.LOCATION_SERVICE);

        locationListener = new MyLocationListener();

        lm.requestLocationUpdates(
            LocationManager.GPS_PROVIDER,
            0,
            0,
            locationListener);
    }
    
    private class MyLocationListener implements LocationListener
    {
        @Override
        public void onLocationChanged(Location loc) {
            if (loc != null) {
                Toast.makeText(getBaseContext(),
                    "Location changed : Lat: " + loc.getLatitude() +
                    " Lng: " + loc.getLongitude(),
                    Toast.LENGTH_SHORT).show();
            }
        }

        @Override
        public void onProviderDisabled(String provider) {
            // TODO Auto-generated method stub
        }

        @Override
        public void onProviderEnabled(String provider) {
            // TODO Auto-generated method stub
        }

        @Override
        public void onStatusChanged(String provider, int status,
            Bundle extras) {
            // TODO Auto-generated method stub
        }
    }

}

{/code}

Fuente: http://www.devx.com/wireless/Article/39239/1954