GPS Status: TrackListActivity uses the value of gps status from the service to select appropiate icon.

src/main/java/de/dennisguse/opentracks/services/handlers/HandlerServer.java

@@ -60,6 +60,10 @@ public class HandlerServer {
         service.newGpsStatus(gpsStatusValue);
     }
 
+    public GpsStatusValue getGpsStatus() {
+        return locationHandler.getGpsStatus();
+    }
+
     public interface HandlerServerInterface {
         void newTrackPoint(TrackPoint trackPoint, int gpsAccuracy);
         void newGpsStatus(GpsStatusValue gpsStatusValue);