Fix an nullpointexception issue when run ChartFragmentTest.

MyTracks/src/com/google/android/apps/mytracks/fragments/ChartFragment.java

@@ -34,6 +34,7 @@ import com.google.android.apps.mytracks.util.UnitConversions;
 import com.google.android.maps.mytracks.R;
 import com.google.common.annotations.VisibleForTesting;
 
+import android.content.Context;
 import android.location.Location;
 import android.os.Bundle;
 import android.support.v4.app.Fragment;
@@ -188,7 +189,7 @@ public class ChartFragment extends Fragment implements TrackDataListener {
   public void onSampledInTrackPoint(Location location) {
     if (isResumed()) {
       double[] data = new double[ChartView.NUM_SERIES + 1];
-      fillDataPoint(location, data);
+      fillDataPoint(location, data, getActivity());
       pendingPoints.add(data);
     }
   }
@@ -196,14 +197,14 @@ public class ChartFragment extends Fragment implements TrackDataListener {
   @Override
   public void onSampledOutTrackPoint(Location location) {
     if (isResumed()) {
-      fillDataPoint(location, null);
+      fillDataPoint(location, null, getActivity());
     }
   }
 
   @Override
   public void onSegmentSplit(Location location) {
     if (isResumed()) {
-      fillDataPoint(location, null);
+      fillDataPoint(location, null, getActivity());
     }
   }
 
@@ -439,9 +440,10 @@ public class ChartFragment extends Fragment implements TrackDataListener {
    * 
    * @param location the location
    * @param data the data point to fill in, can be null
+   * @param context the context
    */
   @VisibleForTesting
-  void fillDataPoint(Location location, double data[]) {
+  void fillDataPoint(Location location, double data[], Context context) {
     double timeOrDistance = Double.NaN;
     double elevation = Double.NaN;
     double speed = Double.NaN;
@@ -451,7 +453,7 @@ public class ChartFragment extends Fragment implements TrackDataListener {
     double power = Double.NaN;
 
     if (tripStatisticsUpdater != null) {
-      tripStatisticsUpdater.addLocation(location, recordingDistanceInterval, getActivity());
+      tripStatisticsUpdater.addLocation(location, recordingDistanceInterval, context);
       TripStatistics tripStatistics = tripStatisticsUpdater.getTripStatistics();
       if (chartByDistance) {
         double distance = tripStatistics.getTotalDistance() * UnitConversions.M_TO_KM;

MyTracksTest/src/com/google/android/apps/mytracks/fragments/ChartFragmentTest.java

@@ -358,7 +358,7 @@ public class ChartFragmentTest extends AndroidTestCase {
    */
   private double[] fillDataPointTestHelper(Location location) {
     double[] point = new double[ChartView.NUM_SERIES + 1];
-    chartFragment.fillDataPoint(location, point);
+    chartFragment.fillDataPoint(location, point, getContext());
     return point;
   }