TrackDataListener now passes most recent TrackPoint to onNewTrackPointsDone().

src/main/java/de/dennisguse/opentracks/content/TrackDataHub.java

@@ -365,10 +365,11 @@ public class TrackDataHub implements SharedPreferences.OnSharedPreferenceChangeL
             next = new TrackPoint.Id(localLastSeenTrackPointIdId.getId() + 1); //TODO startTrackPointId + 1 is an assumption assumption; should be derived from the DB.
         }
 
+        TrackPoint trackPoint = null;
         try (TrackPointIterator trackPointIterator = contentProviderUtils.getTrackPointLocationIterator(selectedTrackId, next)) {
 
             while (trackPointIterator.hasNext()) {
-                TrackPoint trackPoint = trackPointIterator.next();
+                trackPoint = trackPointIterator.next();
                 TrackPoint.Id trackPointId = trackPoint.getId();
 
                 // Stop if past the last wanted point
@@ -398,10 +399,13 @@ public class TrackDataHub implements SharedPreferences.OnSharedPreferenceChangeL
                 }
 
                 localNumLoadedTrackPoints++;
-                localLastSeenTrackPointIdId = trackPointId;
             }
         }
 
+        if (trackPoint != null) {
+            localLastSeenTrackPointIdId = trackPoint.getId();
+        }
+
         if (updateSamplingState) {
             numLoadedPoints = localNumLoadedTrackPoints;
             firstSeenTrackPointId = localFirstSeenTrackPointId;
@@ -409,7 +413,7 @@ public class TrackDataHub implements SharedPreferences.OnSharedPreferenceChangeL
         }
 
         for (TrackDataListener listener : sampledInListeners) {
-            listener.onNewTrackPointsDone();
+            listener.onNewTrackPointsDone(trackPoint);
         }
     }
 

src/main/java/de/dennisguse/opentracks/content/TrackDataListener.java

@@ -16,6 +16,8 @@
 
 package de.dennisguse.opentracks.content;
 
+import androidx.annotation.Nullable;
+
 import de.dennisguse.opentracks.content.data.Marker;
 import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.data.TrackPoint;
@@ -57,7 +59,7 @@ public interface TrackDataListener {
      * Called when finish sending new track points.
      * This gets called after every batch of calls to {@link #onSampledInTrackPoint(TrackPoint)} and {@link #onSampledOutTrackPoint(TrackPoint)}.
      */
-    void onNewTrackPointsDone();
+    void onNewTrackPointsDone(@Nullable TrackPoint lastTrackPoint);
 
     /**
      * Called to clear previously sent markers.

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

@@ -240,7 +240,7 @@ public class ChartFragment extends Fragment implements TrackDataListener {
     }
 
     @Override
-    public void onNewTrackPointsDone() {
+    public void onNewTrackPointsDone(TrackPoint unused) {
         if (isResumed()) {
             chartView.addChartPoints(pendingPoints);
             pendingPoints.clear();

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

@@ -212,7 +212,7 @@ public class IntervalsFragment extends Fragment implements TrackDataListener {
     }
 
     @Override
-    public void onNewTrackPointsDone() {
+    public void onNewTrackPointsDone(TrackPoint unused) {
         if (isResumed()) {
             runOnUiThread(this::loadIntervals);
         }

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

@@ -173,28 +173,27 @@ public class StatisticsRecordingFragment extends Fragment implements TrackDataLi
 
     @Override
     public void onSampledInTrackPoint(TrackPoint trackPoint) {
-        lastTrackPoint = trackPoint;
+        // We don't care.
     }
 
     @Override
     public void onSampledOutTrackPoint(TrackPoint trackPoint) {
-        lastTrackPoint = trackPoint;
+        // We don't care.
     }
 
     @Override
-    public void onNewTrackPointsDone() {
+    public void onNewTrackPointsDone(TrackPoint newLastTrackPoint) {
         if (isResumed()) {
             getActivity().runOnUiThread(() -> {
                 if (isResumed()) {
+                    this.lastTrackPoint = newLastTrackPoint;
+
                     if (!isSelectedTrackRecording() || isSelectedTrackPaused()) {
-                        lastTrackPoint = null;
+                        this.lastTrackPoint = null;
                     }
 
-                    TrackPoint trackPoint = lastTrackPoint; //NOTE: There seems to be a race condition; just fix the symptom for now.
-                    if (trackPoint != null && trackPoint.hasLocation()) {
-                        if (!trackPoint.isRecent()) {
-                            lastTrackPoint = null;
-                        }
+                    if (this.lastTrackPoint != null && this.lastTrackPoint.hasLocation() && !this.lastTrackPoint.isRecent()) {
+                        this.lastTrackPoint = null;
                     }
                     setLocationValues();
                 }
@@ -276,7 +275,7 @@ public class StatisticsRecordingFragment extends Fragment implements TrackDataLi
                 if (sensorDataSet.getCyclingCadence() != null) {
                     sensorDataList.add(new SensorDataModel(sensorDataSet.getCyclingCadence()));
                 }
-                if(sensorDataSet.getCyclingPower() != null) {
+                if (sensorDataSet.getCyclingPower() != null) {
                     sensorDataList.add(new SensorDataModel(sensorDataSet.getCyclingPower()));
                 }
                 sensorsAdapter.swapData(sensorDataList);