From 6ce0db575f0469c47bc42527211c35d62fa126dd Mon Sep 17 00:00:00 2001
From: Jimmy Shih <jshih@google.com>
Date: Fri, 23 Aug 2013 12:51:53 -0700
Subject: [PATCH] Fix null pointer exception with dataSourceManager in
 TrackDataHub

---
 .../apps/mytracks/content/TrackDataHub.java   | 20 ++++++++++++-------
 1 file changed, 13 insertions(+), 7 deletions(-)

diff --git a/MyTracks/src/com/google/android/apps/mytracks/content/TrackDataHub.java b/MyTracks/src/com/google/android/apps/mytracks/content/TrackDataHub.java
index a155d5ed8..c15a75543 100644
--- a/MyTracks/src/com/google/android/apps/mytracks/content/TrackDataHub.java
+++ b/MyTracks/src/com/google/android/apps/mytracks/content/TrackDataHub.java
@@ -117,8 +117,10 @@ public class TrackDataHub implements DataSourceListener {
     runInHanderThread(new Runnable() {
         @Override
       public void run() {
-        dataSourceManager.updateListeners(trackDataManager.getRegisteredTrackDataTypes());
-        loadDataForAll();
+        if (dataSourceManager != null) {
+          dataSourceManager.updateListeners(trackDataManager.getRegisteredTrackDataTypes());
+          loadDataForAll();
+        }
       }
     });
   }
@@ -173,9 +175,11 @@ public class TrackDataHub implements DataSourceListener {
     runInHanderThread(new Runnable() {
         @Override
       public void run() {
-        trackDataManager.registerListener(trackDataListener, trackDataTypes);
-        dataSourceManager.updateListeners(trackDataManager.getRegisteredTrackDataTypes());
-        loadDataForListener(trackDataListener);
+        if (dataSourceManager != null) {
+          trackDataManager.registerListener(trackDataListener, trackDataTypes);
+          dataSourceManager.updateListeners(trackDataManager.getRegisteredTrackDataTypes());
+          loadDataForListener(trackDataListener);
+        }
       }
     });
   }
@@ -189,8 +193,10 @@ public class TrackDataHub implements DataSourceListener {
     runInHanderThread(new Runnable() {
         @Override
       public void run() {
-        trackDataManager.unregisterListener(trackDataListener);
-        dataSourceManager.updateListeners(trackDataManager.getRegisteredTrackDataTypes());
+        if (dataSourceManager != null) {
+          trackDataManager.unregisterListener(trackDataListener);
+          dataSourceManager.updateListeners(trackDataManager.getRegisteredTrackDataTypes());
+        }
       }
     });
   }