Addressing review comments for revision ca3651f10063.

+ limiting RunCadence to 254, same as it was done for cycling Cadence.

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

@@ -65,6 +65,9 @@ public class TcxTrackWriter implements TrackFormatWriter {
   private PrintWriter pw = null;
   private Track track;
 
+  // Determines whether to encode cadence value as running or cycling cadence.
+  private boolean sportIsCycling;
+
   public TcxTrackWriter(Context context) {
     this.context = context;
 
@@ -77,7 +80,7 @@ public class TcxTrackWriter implements TrackFormatWriter {
   public void prepare(Track track, OutputStream out) {
     this.track = track;
     this.pw = new PrintWriter(out);
-
+    this.sportIsCycling = categoryToTcxSport(track.getCategory()).equals(TCX_SPORT_BIKING);
   }
 
   @Override
@@ -176,41 +179,38 @@ public class TcxTrackWriter implements TrackFormatWriter {
           pw.println("</HeartRateBpm>");
         }
         
-        boolean cadenceAsCyclingCadence = categoryToTcxSport(track.getCategory()).equals(TCX_SPORT_BIKING);
+        boolean cadenceAvailable = sensorData.hasCadence()
-
-        boolean cadenceValueAvailable = sensorData.hasCadence() 
           && sensorData.getCadence().getState() == Sensor.SensorState.SENDING
           && sensorData.getCadence().hasValue();
 
-        // TCX Trackpoint_t contains a sequence, 
+        // TCX Trackpoint_t contains a sequence. Thus, the legacy XML element
-        // legacy XML element <Cadence> needs to be put before <Extensions>
+        // <Cadence> needs to be put before <Extensions>.
-        // Only for the case that activity was marked as biking.
+        // This field should only be used for the case that activity was marked as biking.
-        // Otherwise cadence we interpret it as running cadence data 
+        // Otherwise cadence is interpreted as running cadence data which
-        // and put it into <Extensions>.
+        // is written in the <Extensions> as <RunCadence>.
-        if (cadenceAsCyclingCadence && cadenceValueAvailable) {
+        if (sportIsCycling && cadenceAvailable) {
           pw.print("          <Cadence>");
           pw.print(Math.min(254, sensorData.getCadence().getValue()));
           pw.println("</Cadence>");
         }
 
-        boolean powerValueAvailable = sensorData.hasPower()
+        boolean powerAvailable = sensorData.hasPower()
           && sensorData.getPower().getState() == Sensor.SensorState.SENDING
           && sensorData.getPower().hasValue();
         
-        if(powerValueAvailable
+        if(powerAvailable || (!sportIsCycling && cadenceAvailable)) {
-            || (!cadenceAsCyclingCadence && cadenceValueAvailable)) {
           pw.print("          <Extensions>");
           pw.print("<TPX xmlns=\"http://www.garmin.com/xmlschemas/ActivityExtension/v2\">");
 
           // RunCadence needs to be put before power in order to be understood
           // by Garmin Training Center.
-          if (!cadenceAsCyclingCadence && cadenceValueAvailable) {
+          if (!sportIsCycling && cadenceAvailable) {
             pw.print("<RunCadence>");
-            pw.print(sensorData.getCadence().getValue());
+            pw.print(Math.min(254, sensorData.getCadence().getValue()));
             pw.print("</RunCadence>");
           }
           
-          if (powerValueAvailable) {
+          if (powerAvailable) {
             pw.print("<Watts>");
             pw.print(sensorData.getPower().getValue());
             pw.print("</Watts>");