How to periodically find gps location in Android

I am writing an app that records a new gps location every ten minutes on the dot.

I've tried location pollers, putting the location listener in a service, and putting the location listener in an activity but none of these methods work for me.

I need a method to turn on the gps location listener 2 minutes before I begin recording my location data (to give the gps ample time to find a location or determine there is no signal). I've been doing this by using an alarm that calls my gpsActivity 2 minutes before I call my updatelocation class. My updatelocation class then takes the gpsActivity's locationmanager and extracts a location from it.

In theory this should work but when I put it on my phone I always get bad data (accuracy is too low or no signal at all)

If someone could help me out I would be extremely grateful.

Thanks

Alarm calls this class 2 mins before update location

public class GPSActivity extends Activity {

    public static LocationListener loc_listener = null;
    public static LocationManager locationManager = null;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
        getGPS();
    }

    public static void getGPS() {
        if (loc_listener == null) {
            loc_listener = new LocationListener() {

                @Override
                public void onStatusChanged(String provider, int status,
                        Bundle extras) {}

                @Override
                public void onProviderEnabled(String provider) {}

                @Override
                public void onProviderDisabled(String provider) {}

                @Override
                public void onLocationChanged(Location location) {}
            };
        }
        locationManager.requestLocationUpdates(
                LocationManager.GPS_PROVIDER, 0,