Cleanup: use Java 17's instanceof.

Fixes #1757.

src/main/java/de/dennisguse/opentracks/TrackListActivity.java

@@ -379,8 +379,8 @@ public class TrackListActivity extends AbstractTrackDeleteActivity implements Co
         startGpsMenuItem.setVisibility(!isRecording ? View.VISIBLE : View.INVISIBLE);
         if (!isRecording) {
             startGpsMenuItem.setIcon(AppCompatResources.getDrawable(this, isGpsStarted ? gpsStatusValue.icon : R.drawable.ic_gps_off_24dp));
-            if (startGpsMenuItem.getIcon() instanceof AnimatedVectorDrawable) {
-                ((AnimatedVectorDrawable) startGpsMenuItem.getIcon()).start();
+            if (startGpsMenuItem.getIcon() instanceof AnimatedVectorDrawable animatedVectorDrawable) {
+                animatedVectorDrawable.start();
             }
         }
     }

src/main/java/de/dennisguse/opentracks/settings/ResetDialogPreference.java

@@ -49,8 +49,8 @@ public class ResetDialogPreference extends DialogPreference {
                 Toast.makeText(activity, R.string.settings_layout_reset_done, Toast.LENGTH_SHORT).show();
             }
 
-            if (activity instanceof ResetCallback) {
-                ((ResetCallback) activity).onReset();
+            if (activity instanceof ResetCallback resetCallback) {
+                resetCallback.onReset();
             }
         }
     }

src/main/java/de/dennisguse/opentracks/settings/SensorsSettingsFragment.java

@@ -52,9 +52,9 @@ public class SensorsSettingsFragment extends PreferenceFragmentCompat {
     private void setWheelCircumferenceInputFilter() {
         EditTextPreference wheelPreference = findPreference(getString(R.string.settings_sensor_bluetooth_cycling_speed_wheel_circumference_key));
         wheelPreference.setOnPreferenceChangeListener((preference, newValue) -> {
-            if (newValue instanceof String) {
+            if (newValue instanceof String newValueString) {
                 try {
-                    int newValueInt = Integer.parseInt((String) newValue);
+                    int newValueInt = Integer.parseInt(newValueString);
                     return newValueInt >= 100 && newValueInt < 4000;
                 } catch (NumberFormatException e) {
                     Log.w(TAG, "Entered string is no number.");

src/main/java/de/dennisguse/opentracks/ui/markers/MarkerDetailActivity.java

@@ -61,12 +61,12 @@ public class MarkerDetailActivity extends AbstractActivity implements DeleteMark
 
         Object bundleMarkerId = getIntent().getExtras().get(EXTRA_MARKER_ID);
         Marker.Id markerId = null;
-        if (bundleMarkerId instanceof Marker.Id) {
-            markerId = (Marker.Id) bundleMarkerId;
+        if (bundleMarkerId instanceof Marker.Id cast) {
+            markerId = cast;
         }
-        if (bundleMarkerId instanceof Long) {
+        if (bundleMarkerId instanceof Long cast) {
             //Incoming Intent via Dashboard API.
-            markerId = new Marker.Id((Long) bundleMarkerId);
+            markerId = new Marker.Id(cast);
         }
         if (markerId == null) {
             Log.d(TAG, "invalid marker id");

src/main/java/de/dennisguse/opentracks/ui/util/ViewUtils.java

@@ -20,10 +20,10 @@ public class ViewUtils {
 
         for (int i = 0; i < view.getChildCount(); i++) {
             final View child = view.getChildAt(i);
-            if (child instanceof ViewGroup) {
-                makeClickableLinks((ViewGroup) child);
-            } else if (child instanceof TextView) {
-                ((TextView) child).setMovementMethod(LinkMovementMethod.getInstance());
+            if (child instanceof ViewGroup childVg) {
+                makeClickableLinks(childVg);
+            } else if (child instanceof TextView childTv) {
+                childTv.setMovementMethod(LinkMovementMethod.getInstance());
             }
         }
     }

src/main/java/de/dennisguse/opentracks/util/StringUtils.java

@@ -240,9 +240,9 @@ public class StringUtils {
     public static OffsetDateTime parseTime(String xmlDateTime) {
         try {
             TemporalAccessor t = DateTimeFormatter.ISO_DATE_TIME.parseBest(xmlDateTime, ZonedDateTime::from, LocalDateTime::from);
-            if (t instanceof LocalDateTime) {
+            if (t instanceof LocalDateTime localDateTime) {
                 Log.w(TAG, "Date does not contain timezone information: using UTC.");
-                t = ((LocalDateTime) t).atZone(ZoneOffset.UTC);
+                t = localDateTime.atZone(ZoneOffset.UTC);
             }
             return OffsetDateTime.from(t);
         } catch (Exception e) {