Use StringUtils.getSpeedParts to geneate all the pace values in DescriptionGeneratorImpl.

MyTracks/res/values/strings.xml

@@ -384,9 +384,9 @@ limitations under the License.
   <string name="description_average_moving_pace"
     translation_description="Average moving pace description.
 
-      %1$.2f pace in minutes per kilometer
-      %2$.1f pace in minutes per mile">
-    Average moving pace: %1$.2f min/km (%2$.1f min/mi)
+      %1$s pace in minutes per kilometer
+      %2$s pace in minutes per mile">
+    Average moving pace: %1$s min/km (%2$s min/mi)
   </string>
   <string name="description_average_moving_speed"
     translation_description="Average moving speed description.
@@ -398,9 +398,9 @@ limitations under the License.
   <string name="description_average_pace"
     translation_description="Average pace description.
 
-      %1$.2f pace in minutes per kilometer
-      %2$.1f pace in minutes per mile">
-    Average pace: %1$.2f min/km (%2$.1f min/mi)
+      %1$s pace in minutes per kilometer
+      %2$s pace in minutes per mile">
+    Average pace: %1$s min/km (%2$s min/mi)
   </string>
   <string name="description_average_speed"
     translation_description="Average speed description.
@@ -427,9 +427,9 @@ limitations under the License.
   <string name="description_fastest_pace"
     translation_description="Fastest pace description.
 
-      %1$.2f pace in minutes per kilometer
-      %2$.1f pace in minutes per mile">
-    Fastest pace: %1$.2f min/km (%2$.1f min/mi)
+      %1$s pace in minutes per kilometer
+      %2$s pace in minutes per mile">
+    Fastest pace: %1$s min/km (%2$s min/mi)
   </string>
   <string name="description_location_accuracy"
     translation_description="Label for location accuracy in meters.">

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

@@ -24,7 +24,6 @@ import com.google.android.maps.mytracks.R;
 import com.google.common.annotations.VisibleForTesting;
 
 import android.content.Context;
-import android.util.Pair;
 
 import java.util.Vector;
 
@@ -117,25 +116,24 @@ public class DescriptionGeneratorImpl implements DescriptionGenerator {
     writeTime(stats.getMovingTime(), builder, R.string.description_moving_time, lineBreak);
 
     // Average speed
-    Pair<Double, Double> averageSpeed = writeSpeed(
-        stats.getAverageSpeed(), builder, R.string.description_average_speed, lineBreak);
+    writeSpeed(stats.getAverageSpeed(), builder, R.string.description_average_speed, lineBreak);
 
     // Average moving speed
-    Pair<Double, Double> averageMovingSpeed = writeSpeed(stats.getAverageMovingSpeed(), builder,
-        R.string.description_average_moving_speed, lineBreak);
+    writeSpeed(stats.getAverageMovingSpeed(), builder, R.string.description_average_moving_speed,
+        lineBreak);
 
     // Max speed
-    Pair<Double, Double> maxSpeed = writeSpeed(
-        stats.getMaxSpeed(), builder, R.string.description_max_speed, lineBreak);
+    writeSpeed(stats.getMaxSpeed(), builder, R.string.description_max_speed, lineBreak);
 
     // Average pace
-    writePace(averageSpeed, builder, R.string.description_average_pace, lineBreak);
+    writePace(stats.getAverageSpeed(), builder, R.string.description_average_pace, lineBreak);
 
     // Average moving pace
-    writePace(averageMovingSpeed, builder, R.string.description_average_moving_pace, lineBreak);
+    writePace(stats.getAverageMovingSpeed(), builder, R.string.description_average_moving_pace,
+        lineBreak);
 
     // Fastest pace
-    writePace(maxSpeed, builder, R.string.description_fastest_pace, lineBreak);
+    writePace(stats.getMaxSpeed(), builder, R.string.description_fastest_pace, lineBreak);
 
     // Max elevation
     writeElevation(stats.getMaxElevation(), builder, R.string.description_max_elevation, lineBreak);
@@ -199,34 +197,29 @@ public class DescriptionGeneratorImpl implements DescriptionGenerator {
    * @param builder StringBuilder to append speed
    * @param resId resource id of speed string
    * @param lineBreak line break string
-   * @return a pair of speed, first in kilometers per hour, second in miles per
-   *         hour.
    */
   @VisibleForTesting
-  Pair<Double, Double> writeSpeed(
+  void writeSpeed(
       double speed, StringBuilder builder, int resId, String lineBreak) {
     double speedInKmHr = speed * UnitConversions.MS_TO_KMH;
     double speedInMiHr = speedInKmHr * UnitConversions.KM_TO_MI;
     builder.append(context.getString(resId, speedInKmHr, speedInMiHr));
     builder.append(lineBreak);
-    return Pair.create(speedInKmHr, speedInMiHr);
   }
 
   /**
    * Writes pace.
-   *
-   * @param speed a pair of speed, first in kilometers per hour, second in miles
-   *          per hour
+   * 
+   * @param speed speed in meters per second
    * @param builder StringBuilder to append pace
    * @param resId resource id of pace string
    * @param lineBreak line break string
    */
   @VisibleForTesting
-  void writePace(
-      Pair<Double, Double> speed, StringBuilder builder, int resId, String lineBreak) {
-    double paceInMinKm = getPace(speed.first);
-    double paceInMinMi = getPace(speed.second);
-    builder.append(context.getString(resId, paceInMinKm, paceInMinMi));
+  void writePace(double speed, StringBuilder builder, int resId, String lineBreak) {
+    String[] paceInMetrics = StringUtils.getSpeedParts(context, speed, true, false);
+    String[] paceInImperial = StringUtils.getSpeedParts(context, speed, false, false);
+    builder.append(context.getString(resId, paceInMetrics[0], paceInImperial[0]));
     builder.append(lineBreak);
   }
 
@@ -262,14 +255,4 @@ public class DescriptionGeneratorImpl implements DescriptionGenerator {
     builder.append(context.getString(resId, gradeInPercent));
     builder.append(lineBreak);
   }
-
-  /**
-   * Gets pace (in minutes) from speed.
-   *
-   * @param speed speed in hours
-   */
-  @VisibleForTesting
-  double getPace(double speed) {
-    return speed == 0 ? 0.0 : 60.0 / speed; // convert from hours to minutes
-  }
 }

MyTracksTest/src/com/google/android/apps/mytracks/content/DescriptionGeneratorImplTest.java

@@ -68,9 +68,9 @@ public class DescriptionGeneratorImplTest extends AndroidTestCase {
       + "Average speed: 120.00 km/h (74.6 mi/h)<br>"
       + "Average moving speed: 240.00 km/h (149.1 mi/h)<br>"
       + "Max speed: 360.00 km/h (223.7 mi/h)<br>"
-      + "Average pace: 0.50 min/km (0.8 min/mi)<br>"
-      + "Average moving pace: 0.25 min/km (0.4 min/mi)<br>"
-      + "Fastest pace: 0.17 min/km (0.3 min/mi)<br>"
+      + "Average pace: 0.50 min/km (0.80 min/mi)<br>"
+      + "Average moving pace: 0.25 min/km (0.40 min/mi)<br>"
+      + "Fastest pace: 0.17 min/km (0.27 min/mi)<br>"
       + "Max elevation: 550 m (1804 ft)<br>"
       + "Min elevation: -500 m (-1640 ft)<br>"
       + "Elevation gain: 6000 m (19685 ft)<br>"
@@ -103,9 +103,9 @@ public class DescriptionGeneratorImplTest extends AndroidTestCase {
       + "Average speed: 120.00 km/h (74.6 mi/h)\n"
       + "Average moving speed: 240.00 km/h (149.1 mi/h)\n"
       + "Max speed: 360.00 km/h (223.7 mi/h)\n"
-      + "Average pace: 0.50 min/km (0.8 min/mi)\n"
-      + "Average moving pace: 0.25 min/km (0.4 min/mi)\n"
-      + "Fastest pace: 0.17 min/km (0.3 min/mi)\n"
+      + "Average pace: 0.50 min/km (0.80 min/mi)\n"
+      + "Average moving pace: 0.25 min/km (0.40 min/mi)\n"
+      + "Fastest pace: 0.17 min/km (0.27 min/mi)\n"
       + "Max elevation: 550 m (1804 ft)\n"
       + "Min elevation: -500 m (-1640 ft)\n"
       + "Elevation gain: 6000 m (19685 ft)\n"
@@ -162,9 +162,8 @@ public class DescriptionGeneratorImplTest extends AndroidTestCase {
    */
   public void testWritePace() {
     StringBuilder builder = new StringBuilder();
-    descriptionGenerator.writePace(
-        new Pair<Double, Double>(1.1, 2.2), builder, R.string.description_average_pace, "\n");
-    assertEquals("Average pace: 54.55 min/km (27.3 min/mi)\n", builder.toString());
+    descriptionGenerator.writePace(1.1, builder, R.string.description_average_pace, "\n");
+    assertEquals("Average pace: 15.15 min/km (24.38 min/mi)\n", builder.toString());
   }
 
   /**
@@ -197,18 +196,4 @@ public class DescriptionGeneratorImplTest extends AndroidTestCase {
         Double.POSITIVE_INFINITY, builder, R.string.description_max_grade, "<br>");
     assertEquals("Max grade: 0 %<br>", builder.toString());
   }
-
-  /**
-   * Tests {@link DescriptionGeneratorImpl#getPace(double)}.
-   */
-  public void testGetPace() {
-    assertEquals(12.0, descriptionGenerator.getPace(5));
-  }
-
-  /**
-   * Tests {@link DescriptionGeneratorImpl#getPace(double)} with zero speed.
-   */
-  public void testGetPace_zero() {
-    assertEquals(0.0, descriptionGenerator.getPace(0));
-  }
 }