Android: Get recent location only, not getLastKnownLocation?

Question

I am developing an Android application in which current and precise location is key. After GPS fix is detected, it moves to the next activity.

The problem is that I tested it outdoors and found that sometimes it just uses a location from a previous fix.

So what I am asking; is there any other logic to get location from LocationManager other than by getLastKnownLocation? I haven't yet found an example that wouldn't look something like

    Location location = locationManager.getLastKnownLocation(provider);

Thanx!

Answer 1

Here's the sample code from the official guide (with little modifications):

// Acquire a reference to the system Location Manager
LocationManager locationManager = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);

// Define a listener that responds to location updates
LocationListener locationListener = new LocationListener() {
    public void onLocationChanged(Location location) {
         makeUseOfNewLocation(location);
    }

    public void onStatusChanged(String provider, int status, Bundle extras) {}
    public void onProviderEnabled(String provider) {}
    public void onProviderDisabled(String provider) {}
  };

// Register the listener with the Location Manager to receive location updates
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListener);

In here, you just request updates from the GPS, and as soon as the location is received, you'll get a callback call.

Answer 2

You can use LocationListener and then call locationManager.requestLocationUpdates() passing your own listener implementation.