Differentiating between GPS provider unavailable and disabled - unavailable, in some implementations (such as Samsung's) just means it doesn't have a fix.

(Fixes issue 505)

MyTracks/src/com/google/android/apps/mytracks/content/DataSourceManager.java

@@ -24,7 +24,7 @@ import java.util.Set;
 
 /**
  * External data source manager, which converts system-level events into My Tracks data events.
- * 
+ *
  * @author Rodrigo Damazio
  */
 class DataSourceManager {
@@ -36,6 +36,7 @@ class DataSourceManager {
     void notifyPointsUpdated();
     void notifyPreferenceChanged(String key);
     void notifyLocationProviderEnabled(boolean enabled);
+    void notifyLocationProviderAvailable(boolean available);
     void notifyLocationChanged(Location loc);
     void notifyHeadingChanged(float heading);
   }
@@ -93,7 +94,7 @@ class DataSourceManager {
     public void onStatusChanged(String provider, int status, Bundle extras) {
       if (!LocationManager.GPS_PROVIDER.equals(provider)) return;
 
-      listener.notifyLocationProviderEnabled(status == LocationProvider.AVAILABLE);
+      listener.notifyLocationProviderAvailable(status == LocationProvider.AVAILABLE);
     }
 
     @Override
@@ -168,7 +169,7 @@ class DataSourceManager {
       neededListeners.remove(ListenerDataType.SAMPLED_OUT_POINT_UPDATES);
       neededListeners.add(ListenerDataType.POINT_UPDATES);
     }
-    
+
     Log.d(TAG, "Updating internal listeners to types " + neededListeners);
 
     // Unnecessary = registered - needed

MyTracks/src/com/google/android/apps/mytracks/content/TrackDataHub.java

@@ -129,6 +129,12 @@ public class TrackDataHub {
       TrackDataHub.this.notifyFixType();
     }
 
+    @Override
+    public void notifyLocationProviderAvailable(boolean available) {
+      hasFix = available;
+      TrackDataHub.this.notifyFixType();
+    }
+
     @Override
     public void notifyLocationChanged(Location loc) {
       TrackDataHub.this.notifyLocationChanged(loc,