I don't know if you really need to be notified via broadcast receiver, but if it is not absolutely required then you can use GpsStatus.Listener :
Here is how to use it :
mLocationManager.addGpsStatusListener(new GpsStatus.Listener(){
@Override
public void onGpsStatusChanged(int event) {
if(event==GpsStatus.GPS_EVENT_STARTED){
Log.d(TAG,"Gps Started");
}else if(event==GpsStatus.GPS_EVENT_STOPPED){
Log.d(TAG,"Gps Stopped");
}
}
});
And if you really need to receive this info via BroadcastReceiver : just wrap this code in a Service and send the event from there.