Use toArray() with zero-length arrays.

app/src/main/java/androidx/fragment/app/FragmentStatePagerAdapterMenuWorkaround.java

@@ -282,11 +282,9 @@ public abstract class FragmentStatePagerAdapterMenuWorkaround extends PagerAdapt
     @Nullable
     public Parcelable saveState() {
         Bundle state = null;
-        if (mSavedState.size() > 0) {
+        if (!mSavedState.isEmpty()) {
             state = new Bundle();
-            final Fragment.SavedState[] fss = new Fragment.SavedState[mSavedState.size()];
-            mSavedState.toArray(fss);
-            state.putParcelableArray("states", fss);
+            state.putParcelableArray("states", mSavedState.toArray(new Fragment.SavedState[0]));
         }
         for (int i = 0; i < mFragments.size(); i++) {
             final Fragment f = mFragments.get(i);

app/src/main/java/org/schabi/newpipe/fragments/detail/VideoDetailFragment.java

@@ -2167,12 +2167,8 @@ public final class VideoDetailFragment
         } else {
             final int selectedVideoStreamIndexForExternalPlayers =
                     ListHelper.getDefaultResolutionIndex(activity, videoStreamsForExternalPlayers);
-            final CharSequence[] resolutions =
-                    new CharSequence[videoStreamsForExternalPlayers.size()];
-
-            for (int i = 0; i < videoStreamsForExternalPlayers.size(); i++) {
-                resolutions[i] = videoStreamsForExternalPlayers.get(i).getResolution();
-            }
+            final CharSequence[] resolutions = videoStreamsForExternalPlayers.stream()
+                    .map(VideoStream::getResolution).toArray(CharSequence[]::new);
 
             builder.setSingleChoiceItems(resolutions, selectedVideoStreamIndexForExternalPlayers,
                     null);

app/src/main/java/org/schabi/newpipe/fragments/list/search/SearchFragment.java

@@ -919,7 +919,7 @@ public class SearchFragment extends BaseListFragment<SearchInfo, ListExtractor.I
         filterItemCheckedId = item.getItemId();
         item.setChecked(true);
 
-        contentFilter = new String[]{theContentFilter.get(0)};
+        contentFilter = theContentFilter.toArray(new String[0]);
 
         if (!TextUtils.isEmpty(searchString)) {
             search(searchString, contentFilter, sortFilter);
@@ -980,8 +980,7 @@ public class SearchFragment extends BaseListFragment<SearchInfo, ListExtractor.I
         isCorrectedSearch = result.isCorrectedSearch();
 
         // List<MetaInfo> cannot be bundled without creating some containers
-        metaInfo = new MetaInfo[result.getMetaInfo().size()];
-        metaInfo = result.getMetaInfo().toArray(metaInfo);
+        metaInfo = result.getMetaInfo().toArray(new MetaInfo[0]);
         showMetaInfoInTextView(result.getMetaInfo(), searchBinding.searchMetaInfoTextView,
                 searchBinding.searchMetaInfoSeparator, disposables);
 

app/src/main/java/org/schabi/newpipe/player/notification/NotificationConstants.java

@@ -14,7 +14,6 @@ import org.schabi.newpipe.util.Localization;
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.util.ArrayList;
-import java.util.Arrays;
 import java.util.List;
 import java.util.SortedSet;
 import java.util.TreeSet;
@@ -115,7 +114,7 @@ public final class NotificationConstants {
     };
 
 
-    public static final Integer[] SLOT_COMPACT_DEFAULTS = {0, 1, 2};
+    public static final List<Integer> SLOT_COMPACT_DEFAULTS = List.of(0, 1, 2);
 
     public static final int[] SLOT_COMPACT_PREF_KEYS = {
             R.string.notification_slot_compact_0_key,
@@ -181,7 +180,7 @@ public final class NotificationConstants {
 
             if (compactSlot == Integer.MAX_VALUE) {
                 // settings not yet populated, return default values
-                return new ArrayList<>(Arrays.asList(SLOT_COMPACT_DEFAULTS));
+                return SLOT_COMPACT_DEFAULTS;
             }
 
             // a negative value (-1) is set when the user does not want a particular compact slot

app/src/main/java/org/schabi/newpipe/player/notification/NotificationUtil.java

@@ -99,10 +99,7 @@ public final class NotificationUtil {
         // build the compact slot indices array (need code to convert from Integer... because Java)
         final List<Integer> compactSlotList = NotificationConstants.getCompactSlotsFromPreferences(
                 player.getContext(), player.getPrefs(), nonNothingSlotCount);
-        final int[] compactSlots = new int[compactSlotList.size()];
-        for (int i = 0; i < compactSlotList.size(); i++) {
-            compactSlots[i] = compactSlotList.get(i);
-        }
+        final int[] compactSlots = compactSlotList.stream().mapToInt(i -> i).toArray();
 
         builder.setStyle(new androidx.media.app.NotificationCompat.MediaStyle()
                     .setMediaSession(player.getMediaSessionManager().getSessionToken())

app/src/main/java/org/schabi/newpipe/settings/custom/NotificationActionsPreference.java

@@ -34,7 +34,9 @@ import org.schabi.newpipe.util.DeviceUtils;
 import org.schabi.newpipe.util.ThemeHelper;
 import org.schabi.newpipe.views.FocusOverlayView;
 
+import java.util.ArrayList;
 import java.util.List;
+import java.util.stream.IntStream;
 
 public class NotificationActionsPreference extends Preference {
 
@@ -74,13 +76,10 @@ public class NotificationActionsPreference extends Preference {
     ////////////////////////////////////////////////////////////////////////////
 
     private void setupActions(@NonNull final View view) {
-        compactSlots =
-                NotificationConstants.getCompactSlotsFromPreferences(
-                        getContext(), getSharedPreferences(), 5);
-        notificationSlots = new NotificationSlot[5];
-        for (int i = 0; i < 5; i++) {
-            notificationSlots[i] = new NotificationSlot(i, view);
-        }
+        compactSlots = new ArrayList<>(NotificationConstants
+                .getCompactSlotsFromPreferences(getContext(), getSharedPreferences(), 5));
+        notificationSlots = IntStream.range(0, 5).mapToObj(i -> new NotificationSlot(i, view))
+                .toArray(NotificationSlot[]::new);
     }
 
 

app/src/main/java/org/schabi/newpipe/streams/WebMReader.java

@@ -348,8 +348,7 @@ public class WebMReader {
             ensure(elemTrackEntry);
         }
 
-        final WebMTrack[] entries = new WebMTrack[trackEntries.size()];
-        trackEntries.toArray(entries);
+        final WebMTrack[] entries = trackEntries.toArray(new WebMTrack[0]);
 
         for (final WebMTrack entry : entries) {
             switch (entry.trackType) {