Implement ViewBindings for Fragments.

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

@@ -40,6 +40,7 @@ import de.dennisguse.opentracks.content.TrackDataListener;
 import de.dennisguse.opentracks.content.data.Marker;
 import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.data.TrackPoint;
+import de.dennisguse.opentracks.databinding.ChartBinding;
 import de.dennisguse.opentracks.stats.TrackStatistics;
 import de.dennisguse.opentracks.stats.TrackStatisticsUpdater;
 import de.dennisguse.opentracks.util.LocationUtils;
@@ -73,6 +74,8 @@ public class ChartFragment extends Fragment implements TrackDataListener {
     private TrackStatisticsUpdater trackStatisticsUpdater;
     private long startTime;
 
+    private ChartBinding viewBinding;
+
     //TODO Why is this needed?
     private int recordingDistanceInterval;
     private String category = "";
@@ -147,15 +150,16 @@ public class ChartFragment extends Fragment implements TrackDataListener {
 
     @Override
     public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
-        return inflater.inflate(R.layout.chart, container, false);
+        viewBinding = ChartBinding.inflate(inflater, container, false);
+        return viewBinding.getRoot();
     }
 
     @Override
     public void onStart() {
         super.onStart();
-        ViewGroup layout = getView().findViewById(R.id.chart_view_layout);
+
         LayoutParams layoutParams = new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
-        layout.addView(chartView, layoutParams);
+        viewBinding.chartViewLayout.addView(chartView, layoutParams);
     }
 
     @Override
@@ -183,6 +187,12 @@ public class ChartFragment extends Fragment implements TrackDataListener {
         layout.removeView(chartView);
     }
 
+    @Override
+    public void onDestroyView() {
+        super.onDestroyView();
+        viewBinding = null;
+    }
+
     @Override
     public void onTrackUpdated(Track track) {
         if (isResumed()) {