First stab at aggregated stats. Still needs work. Check in to work on home computer

MyTracks/AndroidManifest.xml

@@ -56,8 +56,11 @@
     <activity android:name="com.google.android.apps.mytracks.MyTracksSettings"
               android:label="@string/mytracks_settings" />
 
-    <activity android:name="com.google.android.apps.mytracks.StatsActivity"
+	<activity android:name="com.google.android.apps.mytracks.AggregatedStatsActivity"
-              android:label="@string/statistics"/>
+		android:label="@string/aggregated_stats" />
+
+	<activity android:name="com.google.android.apps.mytracks.StatsActivity"
+		android:label="@string/statistics" />
 
     <activity android:name="com.google.android.apps.mytracks.ChartActivity"
               android:label="@string/elevation_label"/>

MyTracks/res/values/strings.xml

@@ -32,6 +32,7 @@ limitations under the License.
   <string name="choose_track_message">Please select the track to view</string>
   <string name="current_track">Current track</string>
   <string name="current_segment">Last segment</string>
+  <string name="aggregated_stats">Aggregated Statistics</string>
 
   <!-- Error messages -->
   <string name="error_no_location_manager">No location manager was found on this device!</string>

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

@@ -0,0 +1,111 @@
+package com.google.android.apps.mytracks;
+
+import java.util.Collection;
+import java.util.List;
+
+import com.google.android.apps.mytracks.content.MyTracksProviderUtils;
+import com.google.android.apps.mytracks.content.Track;
+import com.google.android.apps.mytracks.stats.TripStatistics;
+import com.google.android.maps.mytracks.R;
+
+import android.app.Activity;
+import android.content.SharedPreferences;
+import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
+import android.os.Bundle;
+import android.os.Handler;
+import android.util.DisplayMetrics;
+import android.util.Log;
+import android.view.Window;
+import android.widget.ScrollView;
+import android.widget.TextView;
+
+/**
+ * Activity for viewing the combined statistics for all the recorded tracks.
+ * 
+ * Other features to add - menu items to change setings.
+ * 
+ * @author Fergus Nelson
+ */
+public class AggregatedStatsActivity extends Activity
+	implements OnSharedPreferenceChangeListener {
+
+	private final StatsUtilities utils;
+	
+	private MyTracksProviderUtils tracksProvider;
+	
+	private boolean metricUnits = true;
+	
+	public AggregatedStatsActivity() {
+		this.utils = new StatsUtilities(this);
+		this.tracksProvider = MyTracksProviderUtils.Factory.get(this);
+	}
+	
+	@Override
+	public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
+		Log.d(MyTracksConstants.TAG, "StatsActivity: onSharedPreferences changed "
+		    + key);
+		if (key != null) {
+	    if (key.equals(MyTracksSettings.METRIC_UNITS)) {
+				metricUnits = sharedPreferences.getBoolean(
+				    MyTracksSettings.METRIC_UNITS, true);
+				utils.setMetricUnits(metricUnits);
+				utils.updateUnits();
+			} 
+		}
+	}
+	
+	@Override
+	protected void onCreate(Bundle savedInstanceState) {
+		super.onCreate(savedInstanceState);
+
+    // We don't need a window title bar:
+    requestWindowFeature(Window.FEATURE_NO_TITLE);
+    //TODO - change to custom layout - without dynamic fields
+    setContentView(R.layout.stats);
+
+    ScrollView sv = ((ScrollView) findViewById(R.id.scrolly));
+    sv.setScrollBarStyle(ScrollView.SCROLLBARS_OUTSIDE_INSET);
+
+    SharedPreferences preferences =
+        getSharedPreferences(MyTracksSettings.SETTINGS_NAME, 0);
+    if (preferences != null) {
+      metricUnits = preferences.getBoolean(MyTracksSettings.METRIC_UNITS,
+          true);
+      preferences.registerOnSharedPreferenceChangeListener(this);
+    }
+    utils.setMetricUnits(metricUnits);
+    utils.updateUnits();
+    utils.setSpeedLabel(R.id.speed_label, R.string.speed, R.string.pace_label);
+    utils.setSpeedLabels();
+
+    DisplayMetrics metrics = new DisplayMetrics();
+    getWindowManager().getDefaultDisplay().getMetrics(metrics);
+    if (metrics.heightPixels > 600) {
+      ((TextView) findViewById(R.id.speed_register)).setTextSize(80.0f);
+    }
+	}
+	
+	private void loadAggregatedStats() {
+		List<Track> tracks = retrieveTracks();
+		TripStatistics rollingStats = null;
+		if (!tracks.isEmpty()) {
+			rollingStats = new TripStatistics(tracks.iterator().next()
+			    .getStatistics());
+			for (int i = 1; i < tracks.size(); i++) {
+				rollingStats.merge(tracks.get(i).getStatistics());
+			}
+		}
+		updateView(rollingStats);
+	}
+	
+	
+	private List<Track> retrieveTracks() {
+		return tracksProvider.retrieveAllTracks();
+	}
+	
+	private void updateView(TripStatistics aggStats) {
+		if (aggStats != null) {
+			
+		}
+	}
+}

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

@@ -142,6 +142,7 @@ public class MyTracks extends TabActivity implements OnTouchListener,
   private MenuItem listMarkers;
   private MenuItem settings;
   private MenuItem help;
+  private MenuItem aggregatedStats;
 
   /*
    * Information on upload success to MyMaps/Docs.
@@ -432,6 +433,8 @@ public class MyTracks extends TabActivity implements OnTouchListener,
     settings.setIcon(android.R.drawable.ic_menu_preferences);
     help = menu.add(0, MyTracksConstants.MENU_HELP, 10002, R.string.help);
     help.setIcon(android.R.drawable.ic_menu_info_details);
+    aggregatedStats = menu.add(0, MyTracksConstants.MENU_AGGREGATED_STATS, 
+    		10003, R.string.aggregated_stats);
     return true;
   }
 
@@ -488,6 +491,11 @@ public class MyTracks extends TabActivity implements OnTouchListener,
         setSelectedTrack(-1);
         return true;
       }
+      case MyTracksConstants.MENU_AGGREGATED_STATS: {
+    	Intent startIntent = new Intent(this, AggregatedStatsActivity.class);
+        startActivity(startIntent);
+        return true;
+      }
     }
     return super.onOptionsItemSelected(item);
   }

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

@@ -77,6 +77,7 @@ public abstract class MyTracksConstants {
   public static final int MENU_CHART_SETTINGS = 8;
   public static final int MENU_HELP = 9;
   public static final int MENU_CURRENT_SEGMENT = 10;
+  public static final int MENU_AGGREGATED_STATS = 11;
 
   /*
    * Context menu ids:

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

@@ -15,6 +15,9 @@
  */
 package com.google.android.apps.mytracks.content;
 
+import java.util.Collection;
+import java.util.List;
+
 import android.content.Context;
 import android.database.Cursor;
 import android.location.Location;
@@ -183,6 +186,15 @@ public interface MyTracksProviderUtils {
    * @return a Track object, or null if not found
    */
   Track getTrack(long id);
+  
+	/**
+	 * Retrieves all tracks without track points. If no tracks exist an empty
+	 * collection will be returns. Use {@link #getTrackPoints(Track, int)} to load
+	 * the track points.
+	 * 
+	 * @return a collection of all the recorded tracks
+	 */
+	List<Track> retrieveAllTracks();
 
   /**
    * Loads the track points for a given track.

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

@@ -15,6 +15,10 @@
  */
 package com.google.android.apps.mytracks.content;
 
+import java.util.Collection;
+import java.util.LinkedList;
+import java.util.List;
+
 import com.google.android.apps.mytracks.stats.TripStatistics;
 
 import android.content.ContentValues;
@@ -802,6 +806,17 @@ public class MyTracksProviderUtilsImpl implements MyTracksProviderUtils {
     String select = TracksColumns._ID + "=" + id;
     return findTrackBy(select);
   }
+  
+  public List<Track> retrieveAllTracks() {
+  	List<Track> tracks = new LinkedList<Track>();
+  	Cursor cursor = getTracksCursor(null);
+  	if (cursor != null) {
+  		do {
+  			tracks.add(createTrack(cursor));
+  		} while(cursor.moveToNext());
+  	}
+  	return tracks;
+  }
 
   @Override
   public long getTrackPoints(Track track, int maxPoints) {