UI: split stats_item between generic and sensor (some bugfixes).

Part of #24.

src/main/java/de/dennisguse/opentracks/fragments/StatisticsRecordingFragment.java

@@ -162,7 +162,7 @@ public class StatisticsRecordingFragment extends Fragment {
 
                 viewBinding.statsLayout.addView(viewHolder.getView(), param);
             } catch (Exception e) {
-                throw new RuntimeException(e);
+                throw new RuntimeException("Could not add " + dataField.getKey(), e);
             }
         }
     }

src/main/java/de/dennisguse/opentracks/ui/customRecordingLayout/DataField.java

@@ -87,4 +87,14 @@ public class DataField implements Parcelable {
     public int hashCode() {
         return Objects.hash(key, isVisible, isPrimary, isWide);
     }
+
+    @Override
+    public String toString() {
+        return "DataField{" +
+                "key='" + key + '\'' +
+                ", isVisible=" + isVisible +
+                ", isPrimary=" + isPrimary +
+                ", isWide=" + isWide +
+                '}';
+    }
 }

src/main/java/de/dennisguse/opentracks/viewmodels/SensorStatisticsViewHolder.java

@@ -3,8 +3,6 @@ package de.dennisguse.opentracks.viewmodels;
 import android.util.Pair;
 import android.view.LayoutInflater;
 
-import androidx.core.content.ContextCompat;
-
 import de.dennisguse.opentracks.R;
 import de.dennisguse.opentracks.data.models.HeartRateZones;
 import de.dennisguse.opentracks.databinding.StatsSensorItemBinding;
@@ -19,12 +17,13 @@ public abstract class SensorStatisticsViewHolder extends StatisticViewHolder<Sta
 
     @Override
     protected StatsSensorItemBinding createViewBinding(LayoutInflater inflater) {
-        return null;
+        return StatsSensorItemBinding.inflate(inflater);
     }
 
     @Override
     public void configureUI(DataField dataField) {
-
+        getBinding().statsValue.setTextAppearance(getContext(), dataField.isPrimary() ? R.style.TextAppearance_OpenTracks_PrimaryValue : R.style.TextAppearance_OpenTracks_SecondaryValue);
+        getBinding().statsDescriptionMain.setTextAppearance(getContext(), dataField.isPrimary() ? R.style.TextAppearance_OpenTracks_PrimaryHeader : R.style.TextAppearance_OpenTracks_SecondaryHeader);
     }
 
     public static class SensorHeartRate extends SensorStatisticsViewHolder {
@@ -45,7 +44,7 @@ public abstract class SensorStatisticsViewHolder extends StatisticViewHolder<Sta
             //TODO Loads preference every time
             HeartRateZones zones = PreferencesUtils.getHeartRateZones();
             int textColor;
-            if (sensorDataSet != null) {
+            if (sensorDataSet != null && sensorDataSet.getHeartRate() != null) {
                 textColor = zones.getTextColorForZone(getContext(), sensorDataSet.getHeartRate().first);
             } else {
                 textColor = zones.getTextColorForZone(getContext(), null);
@@ -57,7 +56,7 @@ public abstract class SensorStatisticsViewHolder extends StatisticViewHolder<Sta
 
             getBinding().statsDescriptionSecondary.setText(sensorName);
 
-            getBinding().statsValue.setTextColor(ContextCompat.getColor(getContext(), textColor));
+            getBinding().statsValue.setTextColor(textColor);
         }
     }