title: MyLocationOverlay vs. LocationManager, and background Service
body: <p>I am developing an app. in which I share my location with friends (very much like google latitude). I have a service which is running as daemon: it should display received locations, and publish current user location each x seconds.</p>
  
  <p>Now, being quite new to Android and Maps, I am a bit confused about MyLocationOverlay and LocationManager.</p>
  
  <p>While experimenting with the MapActivity, I am using MyLocationOverlay which seems very handy to display my location. Problem is, I am not sure where it is taking the location from (net, gps,.. ?) and how often it updates it. Moreover, I suppose I cannot use it outside the MapActivity, hence I'll need to use the LocationManager anyway.</p>
  
  <p>The question is: using the LocationManager to do the background work and MyLocationOverlay to only show my location would be too much? I suppose it would be better to only use the LocationManager, right?</p>