Android: how to implement gps location via BroadcastReceiver?

Question

satellite navigation

Good afternoon!
Is it correct approach to take coordinates through BroadcastReceiver?
Or is it like extra. method for determining geodata?
How to use this receiver:

protected BroadcastReceiver singleUpdateReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            context.unregisterReceiver(singleUpdateReceiver);

            String key = LocationManager.KEY_LOCATION_CHANGED;
            Location location = (Location)intent.getExtras().get(key);

            Toast.makeText(getApplicationContext(), "BroadcastReceiver: "+Double.toString(location.getLatitude()), Toast.LENGTH_LONG).show();
        }
    };

Is it just to register in the manifest or do I still need to process events in the activity?
And another question on the topic:
getLastKnownLocation gives out only the already available data received before. How to use this method to get up-to-date data at the moment?
Thank you.