Hide menu items when track list is empty

MyTracks/res/values/strings.xml

@@ -632,16 +632,6 @@ limitations under the License.
       %2$s the directory. E.g., '/MyTracks/kml'.">
     Exported %1$d of %2$s to %3$s.
   </string>
-  <string name="export_external_storage_no_track"
-    translation_description="When exporting tracks to the external storage, the message in the
-      result dialog when there is no tracks to export.">
-    There is no tracks to export.
-  </string>
-  <string name="export_external_storage_no_track_title"
-    translation_description="When exporting tracks to the external storage, the title in the result
-      dialog when there is no tracks to export.">
-    Export tracks
-  </string>
   <string name="export_external_storage_option"
     translation_description="When exporting a track to the external storage, the option to export as
       a certain file format.

MyTracks/src/com/google/android/apps/mytracks/TrackListActivity.java

@@ -307,7 +307,9 @@ public class TrackListActivity extends AbstractSendToGoogleActivity
   // Menu items
   private MenuItem searchMenuItem;
   private MenuItem startGpsMenuItem;
+  private MenuItem playMultipleItem;
   private MenuItem syncNowMenuItem;
+  private MenuItem aggregatedStatisticsMenuItem;
   private MenuItem exportAllMenuItem;
   private MenuItem importAllMenuItem;
   private MenuItem deleteAllMenuItem;
@@ -469,7 +471,9 @@ public class TrackListActivity extends AbstractSendToGoogleActivity
     ApiAdapterFactory.getApiAdapter().configureSearchWidget(this, searchMenuItem, trackController);
 
     startGpsMenuItem = menu.findItem(R.id.track_list_start_gps);
+    playMultipleItem = menu.findItem(R.id.track_list_play_mutliple);
     syncNowMenuItem = menu.findItem(R.id.track_list_sync_now);
+    aggregatedStatisticsMenuItem = menu.findItem(R.id.track_list_aggregated_statistics);
     exportAllMenuItem = menu.findItem(R.id.track_list_export_all);
     importAllMenuItem = menu.findItem(R.id.track_list_import_all);
     deleteAllMenuItem = menu.findItem(R.id.track_list_delete_all);
@@ -730,6 +734,7 @@ public class TrackListActivity extends AbstractSendToGoogleActivity
    * @param isRecording true if recording
    */
   private void updateMenuItems(boolean isGpsStarted, boolean isRecording) {
+    boolean hasTrack = listView != null && listView.getCount() != 0;
     if (startGpsMenuItem != null) {
       startGpsMenuItem.setVisible(!isRecording);
       if (!isRecording) {
@@ -739,17 +744,23 @@ public class TrackListActivity extends AbstractSendToGoogleActivity
         TrackIconUtils.setMenuIconColor(startGpsMenuItem);        
       }
     }
+    if (playMultipleItem != null) {
+      playMultipleItem.setVisible(hasTrack);
+    }
     if (syncNowMenuItem != null) {
       syncNowMenuItem.setTitle(driveSync ? R.string.menu_sync_now : R.string.menu_sync_drive);
     }
+    if (aggregatedStatisticsMenuItem != null) {
+      aggregatedStatisticsMenuItem.setVisible(hasTrack);
+    }
     if (exportAllMenuItem != null) {
-      exportAllMenuItem.setVisible(!isRecording);
+      exportAllMenuItem.setVisible(hasTrack && !isRecording);
     }
     if (importAllMenuItem != null) {
       importAllMenuItem.setVisible(!isRecording);
     }
     if (deleteAllMenuItem != null) {
-      deleteAllMenuItem.setVisible(!isRecording);
+      deleteAllMenuItem.setVisible(hasTrack && !isRecording);
     }
   }
   

MyTracks/src/com/google/android/apps/mytracks/io/file/exporter/SaveActivity.java

@@ -135,16 +135,10 @@ public class SaveActivity extends Activity {
         String totalTracks = getResources()
             .getQuantityString(R.plurals.tracks, totalCount, totalCount);
         if (successCount == totalCount) {
-          if (totalCount == 0) {
-            iconId = android.R.drawable.ic_dialog_info;
-            titleId = R.string.export_external_storage_no_track_title;
-            message = getString(R.string.export_external_storage_no_track);
-          } else {
-            iconId = R.drawable.ic_dialog_success;
-            titleId = R.string.generic_success_title;
-            message = getString(
-                R.string.export_external_storage_success, totalTracks, directoryDisplayName);
-          }
+          iconId = R.drawable.ic_dialog_success;
+          titleId = R.string.generic_success_title;
+          message = getString(
+              R.string.export_external_storage_success, totalTracks, directoryDisplayName);
         } else {
           iconId = android.R.drawable.ic_dialog_alert;
           titleId = R.string.generic_error_title;

MyTracksTest_E2E/src/com/google/android/apps/mytracks/endtoendtest/common/DeleteTest.java

@@ -71,17 +71,6 @@ public class DeleteTest extends ActivityInstrumentationTestCase2<TrackListActivi
     // There is no track now.
     trackListView = EndToEndTestUtils.SOLO.getCurrentViews(ListView.class);
     assertEquals(0, trackListView.get(0).getCount());
-    // Export when there is no track.
-    EndToEndTestUtils.findMenuItem(activityMyTracks.getString(R.string.menu_export_all), true);
-    EndToEndTestUtils.SOLO.clickOnText(EndToEndTestUtils.GPX.toUpperCase());
-    EndToEndTestUtils
-        .getButtonOnScreen(activityMyTracks.getString(R.string.generic_ok), true, true);
-    EndToEndTestUtils.waitTextToDisappear(activityMyTracks
-        .getString(R.string.generic_progress_title));
-    assertTrue(EndToEndTestUtils.SOLO.waitForText(activityMyTracks
-        .getString(R.string.export_external_storage_no_track)));
-    EndToEndTestUtils
-        .getButtonOnScreen(activityMyTracks.getString(R.string.generic_ok), true, true);
   }
 
   /**