Merge pull request #10018 from Stypox/comment-replies

Add support for comment replies

app/src/main/java/org/schabi/newpipe/MainActivity.java

@@ -44,6 +44,7 @@ import android.widget.FrameLayout;
 import android.widget.Spinner;
 
 import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
 import androidx.appcompat.app.ActionBar;
 import androidx.appcompat.app.ActionBarDrawerToggle;
 import androidx.appcompat.app.AppCompatActivity;
@@ -51,6 +52,7 @@ import androidx.core.app.ActivityCompat;
 import androidx.core.view.GravityCompat;
 import androidx.drawerlayout.widget.DrawerLayout;
 import androidx.fragment.app.Fragment;
+import androidx.fragment.app.FragmentContainerView;
 import androidx.fragment.app.FragmentManager;
 import androidx.preference.PreferenceManager;
 
@@ -64,11 +66,13 @@ import org.schabi.newpipe.databinding.ToolbarLayoutBinding;
 import org.schabi.newpipe.error.ErrorUtil;
 import org.schabi.newpipe.extractor.NewPipe;
 import org.schabi.newpipe.extractor.StreamingService;
+import org.schabi.newpipe.extractor.comments.CommentsInfoItem;
 import org.schabi.newpipe.extractor.exceptions.ExtractionException;
 import org.schabi.newpipe.extractor.services.peertube.PeertubeInstance;
 import org.schabi.newpipe.fragments.BackPressable;
 import org.schabi.newpipe.fragments.MainFragment;
 import org.schabi.newpipe.fragments.detail.VideoDetailFragment;
+import org.schabi.newpipe.fragments.list.comments.CommentRepliesFragment;
 import org.schabi.newpipe.fragments.list.search.SearchFragment;
 import org.schabi.newpipe.local.feed.notifications.NotificationWorker;
 import org.schabi.newpipe.player.Player;
@@ -546,14 +550,21 @@ public class MainActivity extends AppCompatActivity {
         // interacts with a fragment inside fragment_holder so all back presses should be
         // handled by it
         if (bottomSheetHiddenOrCollapsed()) {
-            final Fragment fragment = getSupportFragmentManager()
+            final FragmentManager fm = getSupportFragmentManager();
-                    .findFragmentById(R.id.fragment_holder);
+            final Fragment fragment = fm.findFragmentById(R.id.fragment_holder);
             // If current fragment implements BackPressable (i.e. can/wanna handle back press)
             // delegate the back press to it
             if (fragment instanceof BackPressable) {
                 if (((BackPressable) fragment).onBackPressed()) {
                     return;
                 }
+            } else if (fragment instanceof CommentRepliesFragment) {
+                // expand DetailsFragment if CommentRepliesFragment was opened
+                // to show the top level comments again
+                // Expand DetailsFragment if CommentRepliesFragment was opened
+                // and no other CommentRepliesFragments are on top of the back stack
+                // to show the top level comments again.
+                openDetailFragmentFromCommentReplies(fm, false);
             }
 
         } else {
@@ -629,10 +640,17 @@ public class MainActivity extends AppCompatActivity {
      * </pre>
      */
     private void onHomeButtonPressed() {
-        // If search fragment wasn't found in the backstack...
+        final FragmentManager fm = getSupportFragmentManager();
-        if (!NavigationHelper.tryGotoSearchFragment(getSupportFragmentManager())) {
+        final Fragment fragment = fm.findFragmentById(R.id.fragment_holder);
-            // ...go to the main fragment
+
-            NavigationHelper.gotoMainFragment(getSupportFragmentManager());
+        if (fragment instanceof CommentRepliesFragment) {
+            // Expand DetailsFragment if CommentRepliesFragment was opened
+            // and no other CommentRepliesFragments are on top of the back stack
+            // to show the top level comments again.
+            openDetailFragmentFromCommentReplies(fm, true);
+        } else if (!NavigationHelper.tryGotoSearchFragment(fm)) {
+            // If search fragment wasn't found in the backstack go to the main fragment
+            NavigationHelper.gotoMainFragment(fm);
         }
     }
 
@@ -828,6 +846,68 @@ public class MainActivity extends AppCompatActivity {
         }
     }
 
+    private void openDetailFragmentFromCommentReplies(
+            @NonNull final FragmentManager fm,
+            final boolean popBackStack
+    ) {
+        // obtain the name of the fragment under the replies fragment that's going to be popped
+        @Nullable final String fragmentUnderEntryName;
+        if (fm.getBackStackEntryCount() < 2) {
+            fragmentUnderEntryName = null;
+        } else {
+            fragmentUnderEntryName = fm.getBackStackEntryAt(fm.getBackStackEntryCount() - 2)
+                    .getName();
+        }
+
+        // the root comment is the comment for which the user opened the replies page
+        @Nullable final CommentRepliesFragment repliesFragment =
+                (CommentRepliesFragment) fm.findFragmentByTag(CommentRepliesFragment.TAG);
+        @Nullable final CommentsInfoItem rootComment =
+                repliesFragment == null ? null : repliesFragment.getCommentsInfoItem();
+
+        // sometimes this function pops the backstack, other times it's handled by the system
+        if (popBackStack) {
+            fm.popBackStackImmediate();
+        }
+
+        // only expand the bottom sheet back if there are no more nested comment replies fragments
+        // stacked under the one that is currently being popped
+        if (CommentRepliesFragment.TAG.equals(fragmentUnderEntryName)) {
+            return;
+        }
+
+        final BottomSheetBehavior<FragmentContainerView> behavior = BottomSheetBehavior
+                .from(mainBinding.fragmentPlayerHolder);
+        // do not return to the comment if the details fragment was closed
+        if (behavior.getState() == BottomSheetBehavior.STATE_HIDDEN) {
+            return;
+        }
+
+        // scroll to the root comment once the bottom sheet expansion animation is finished
+        behavior.addBottomSheetCallback(new BottomSheetBehavior.BottomSheetCallback() {
+            @Override
+            public void onStateChanged(@NonNull final View bottomSheet,
+                                       final int newState) {
+                if (newState == BottomSheetBehavior.STATE_EXPANDED) {
+                    final Fragment detailFragment = fm.findFragmentById(
+                            R.id.fragment_player_holder);
+                    if (detailFragment instanceof VideoDetailFragment && rootComment != null) {
+                        // should always be the case
+                        ((VideoDetailFragment) detailFragment).scrollToComment(rootComment);
+                    }
+                    behavior.removeBottomSheetCallback(this);
+                }
+            }
+
+            @Override
+            public void onSlide(@NonNull final View bottomSheet, final float slideOffset) {
+                // not needed, listener is removed once the sheet is expanded
+            }
+        });
+
+        behavior.setState(BottomSheetBehavior.STATE_EXPANDED);
+    }
+
     private boolean bottomSheetHiddenOrCollapsed() {
         final BottomSheetBehavior<FrameLayout> bottomSheetBehavior =
                 BottomSheetBehavior.from(mainBinding.fragmentPlayerHolder);

app/src/main/java/org/schabi/newpipe/error/UserAction.java

@@ -19,6 +19,7 @@ public enum UserAction {
     REQUESTED_PLAYLIST("requested playlist"),
     REQUESTED_KIOSK("requested kiosk"),
     REQUESTED_COMMENTS("requested comments"),
+    REQUESTED_COMMENT_REPLIES("requested comment replies"),
     REQUESTED_FEED("requested feed"),
     REQUESTED_BOOKMARK("bookmark"),
     DELETE_FROM_HISTORY("delete from history"),

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

@@ -74,6 +74,7 @@ import org.schabi.newpipe.error.UserAction;
 import org.schabi.newpipe.extractor.Image;
 import org.schabi.newpipe.extractor.InfoItem;
 import org.schabi.newpipe.extractor.NewPipe;
+import org.schabi.newpipe.extractor.comments.CommentsInfoItem;
 import org.schabi.newpipe.extractor.exceptions.ContentNotSupportedException;
 import org.schabi.newpipe.extractor.exceptions.ExtractionException;
 import org.schabi.newpipe.extractor.stream.AudioStream;
@@ -1012,6 +1013,20 @@ public final class VideoDetailFragment
         updateTabLayoutVisibility();
     }
 
+    public void scrollToComment(final CommentsInfoItem comment) {
+        final int commentsTabPos = pageAdapter.getItemPositionByTitle(COMMENTS_TAB_TAG);
+        final Fragment fragment = pageAdapter.getItem(commentsTabPos);
+        if (!(fragment instanceof CommentsFragment)) {
+            return;
+        }
+
+        // unexpand the app bar only if scrolling to the comment succeeded
+        if (((CommentsFragment) fragment).scrollToComment(comment)) {
+            binding.appBarLayout.setExpanded(false, false);
+            binding.viewPager.setCurrentItem(commentsTabPos, false);
+        }
+    }
+
     /*//////////////////////////////////////////////////////////////////////////
     // Play Utils
     //////////////////////////////////////////////////////////////////////////*/

app/src/main/java/org/schabi/newpipe/fragments/list/BaseListInfoFragment.java

@@ -231,6 +231,8 @@ public abstract class BaseListInfoFragment<I extends InfoItem, L extends ListInf
             if (!result.getRelatedItems().isEmpty()) {
                 infoListAdapter.addInfoItemList(result.getRelatedItems());
                 showListFooter(hasMoreItems());
+            } else if (hasMoreItems()) {
+                loadMoreItems();
             } else {
                 infoListAdapter.clearStreamItemList();
                 showEmptyState();

app/src/main/java/org/schabi/newpipe/fragments/list/comments/CommentRepliesFragment.java

@@ -0,0 +1,168 @@
+package org.schabi.newpipe.fragments.list.comments;
+
+import static org.schabi.newpipe.util.ServiceHelper.getServiceById;
+
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.constraintlayout.widget.ConstraintLayout;
+import androidx.core.text.HtmlCompat;
+
+import org.schabi.newpipe.R;
+import org.schabi.newpipe.databinding.CommentRepliesHeaderBinding;
+import org.schabi.newpipe.error.UserAction;
+import org.schabi.newpipe.extractor.ListExtractor;
+import org.schabi.newpipe.extractor.comments.CommentsInfoItem;
+import org.schabi.newpipe.fragments.list.BaseListInfoFragment;
+import org.schabi.newpipe.info_list.ItemViewMode;
+import org.schabi.newpipe.util.DeviceUtils;
+import org.schabi.newpipe.util.ExtractorHelper;
+import org.schabi.newpipe.util.Localization;
+import org.schabi.newpipe.util.NavigationHelper;
+import org.schabi.newpipe.util.image.ImageStrategy;
+import org.schabi.newpipe.util.image.PicassoHelper;
+import org.schabi.newpipe.util.text.TextLinkifier;
+
+import java.util.Queue;
+import java.util.function.Supplier;
+
+import io.reactivex.rxjava3.core.Single;
+import io.reactivex.rxjava3.disposables.CompositeDisposable;
+
+public final class CommentRepliesFragment
+        extends BaseListInfoFragment<CommentsInfoItem, CommentRepliesInfo> {
+
+    public static final String TAG = CommentRepliesFragment.class.getSimpleName();
+
+    private CommentsInfoItem commentsInfoItem; // the comment to show replies of
+    private final CompositeDisposable disposables = new CompositeDisposable();
+
+
+    /*//////////////////////////////////////////////////////////////////////////
+    // Constructors and lifecycle
+    //////////////////////////////////////////////////////////////////////////*/
+
+    // only called by the Android framework, after which readFrom is called and restores all data
+    public CommentRepliesFragment() {
+        super(UserAction.REQUESTED_COMMENT_REPLIES);
+    }
+
+    public CommentRepliesFragment(@NonNull final CommentsInfoItem commentsInfoItem) {
+        this();
+        this.commentsInfoItem = commentsInfoItem;
+        // setting "" as title since the title will be properly set right after
+        setInitialData(commentsInfoItem.getServiceId(), commentsInfoItem.getUrl(), "");
+    }
+
+    @Nullable
+    @Override
+    public View onCreateView(@NonNull final LayoutInflater inflater,
+                             @Nullable final ViewGroup container,
+                             @Nullable final Bundle savedInstanceState) {
+        return inflater.inflate(R.layout.fragment_comments, container, false);
+    }
+
+    @Override
+    public void onDestroyView() {
+        disposables.clear();
+        super.onDestroyView();
+    }
+
+    @Override
+    protected Supplier<View> getListHeaderSupplier() {
+        return () -> {
+            final CommentRepliesHeaderBinding binding = CommentRepliesHeaderBinding
+                    .inflate(activity.getLayoutInflater(), itemsList, false);
+            final CommentsInfoItem item = commentsInfoItem;
+
+            // load the author avatar
+            PicassoHelper.loadAvatar(item.getUploaderAvatars()).into(binding.authorAvatar);
+            binding.authorAvatar.setVisibility(ImageStrategy.shouldLoadImages()
+                    ? View.VISIBLE : View.GONE);
+
+            // setup author name and comment date
+            binding.authorName.setText(item.getUploaderName());
+            binding.uploadDate.setText(Localization.relativeTimeOrTextual(
+                    getContext(), item.getUploadDate(), item.getTextualUploadDate()));
+            binding.authorTouchArea.setOnClickListener(
+                    v -> NavigationHelper.openCommentAuthorIfPresent(requireActivity(), item));
+
+            // setup like count, hearted and pinned
+            binding.thumbsUpCount.setText(
+                    Localization.likeCount(requireContext(), item.getLikeCount()));
+            // for heartImage goneMarginEnd was used, but there is no way to tell ConstraintLayout
+            // not to use a different margin only when both the next two views are gone
+            ((ConstraintLayout.LayoutParams) binding.thumbsUpCount.getLayoutParams())
+                    .setMarginEnd(DeviceUtils.dpToPx(
+                            (item.isHeartedByUploader() || item.isPinned() ? 8 : 16),
+                            requireContext()));
+            binding.heartImage.setVisibility(item.isHeartedByUploader() ? View.VISIBLE : View.GONE);
+            binding.pinnedImage.setVisibility(item.isPinned() ? View.VISIBLE : View.GONE);
+
+            // setup comment content
+            TextLinkifier.fromDescription(binding.commentContent, item.getCommentText(),
+                    HtmlCompat.FROM_HTML_MODE_LEGACY, getServiceById(item.getServiceId()),
+                    item.getUrl(), disposables, null);
+
+            return binding.getRoot();
+        };
+    }
+
+
+    /*//////////////////////////////////////////////////////////////////////////
+    // State saving
+    //////////////////////////////////////////////////////////////////////////*/
+
+    @Override
+    public void writeTo(final Queue<Object> objectsToSave) {
+        super.writeTo(objectsToSave);
+        objectsToSave.add(commentsInfoItem);
+    }
+
+    @Override
+    public void readFrom(@NonNull final Queue<Object> savedObjects) throws Exception {
+        super.readFrom(savedObjects);
+        commentsInfoItem = (CommentsInfoItem) savedObjects.poll();
+    }
+
+
+    /*//////////////////////////////////////////////////////////////////////////
+    // Data loading
+    //////////////////////////////////////////////////////////////////////////*/
+
+    @Override
+    protected Single<CommentRepliesInfo> loadResult(final boolean forceLoad) {
+        return Single.fromCallable(() -> new CommentRepliesInfo(commentsInfoItem,
+                // the reply count string will be shown as the activity title
+                Localization.replyCount(requireContext(), commentsInfoItem.getReplyCount())));
+    }
+
+    @Override
+    protected Single<ListExtractor.InfoItemsPage<CommentsInfoItem>> loadMoreItemsLogic() {
+        // commentsInfoItem.getUrl() should contain the url of the original
+        // ListInfo<CommentsInfoItem>, which should be the stream url
+        return ExtractorHelper.getMoreCommentItems(
+                serviceId, commentsInfoItem.getUrl(), currentNextPage);
+    }
+
+
+    /*//////////////////////////////////////////////////////////////////////////
+    // Utils
+    //////////////////////////////////////////////////////////////////////////*/
+
+    @Override
+    protected ItemViewMode getItemViewMode() {
+        return ItemViewMode.LIST;
+    }
+
+    /**
+     * @return the comment to which the replies are shown
+     */
+    public CommentsInfoItem getCommentsInfoItem() {
+        return commentsInfoItem;
+    }
+}

app/src/main/java/org/schabi/newpipe/fragments/list/comments/CommentRepliesInfo.java

@@ -0,0 +1,22 @@
+package org.schabi.newpipe.fragments.list.comments;
+
+import org.schabi.newpipe.extractor.ListInfo;
+import org.schabi.newpipe.extractor.comments.CommentsInfoItem;
+import org.schabi.newpipe.extractor.linkhandler.ListLinkHandler;
+
+import java.util.Collections;
+
+public final class CommentRepliesInfo extends ListInfo<CommentsInfoItem> {
+    /**
+     * This class is used to wrap the comment replies page into a ListInfo object.
+     *
+     * @param comment the comment from which to get replies
+     * @param name will be shown as the fragment title
+     */
+    public CommentRepliesInfo(final CommentsInfoItem comment, final String name) {
+        super(comment.getServiceId(),
+                new ListLinkHandler("", "", "", Collections.emptyList(), null), name);
+        setNextPage(comment.getReplies());
+        setRelatedItems(Collections.emptyList()); // since it must be non-null
+    }
+}

app/src/main/java/org/schabi/newpipe/fragments/list/comments/CommentsFragment.java

@@ -110,4 +110,14 @@ public class CommentsFragment extends BaseListInfoFragment<CommentsInfoItem, Com
     protected ItemViewMode getItemViewMode() {
         return ItemViewMode.LIST;
     }
+
+    public boolean scrollToComment(final CommentsInfoItem comment) {
+        final int position = infoListAdapter.getItemsList().indexOf(comment);
+        if (position < 0) {
+            return false;
+        }
+
+        itemsList.scrollToPosition(position);
+        return true;
+    }
 }

app/src/main/java/org/schabi/newpipe/fragments/list/videos/RelatedItemsFragment.java

@@ -21,18 +21,17 @@ import org.schabi.newpipe.extractor.stream.StreamInfo;
 import org.schabi.newpipe.fragments.list.BaseListInfoFragment;
 import org.schabi.newpipe.info_list.ItemViewMode;
 import org.schabi.newpipe.ktx.ViewUtils;
-import org.schabi.newpipe.util.RelatedItemInfo;
 
 import java.io.Serializable;
 import java.util.function.Supplier;
 
 import io.reactivex.rxjava3.core.Single;
 
-public class RelatedItemsFragment extends BaseListInfoFragment<InfoItem, RelatedItemInfo>
+public class RelatedItemsFragment extends BaseListInfoFragment<InfoItem, RelatedItemsInfo>
         implements SharedPreferences.OnSharedPreferenceChangeListener {
     private static final String INFO_KEY = "related_info_key";
 
-    private RelatedItemInfo relatedItemInfo;
+    private RelatedItemsInfo relatedItemsInfo;
 
     /*//////////////////////////////////////////////////////////////////////////
     // Views
@@ -69,7 +68,7 @@ public class RelatedItemsFragment extends BaseListInfoFragment<InfoItem, Related
 
     @Override
     protected Supplier<View> getListHeaderSupplier() {
-        if (relatedItemInfo == null || relatedItemInfo.getRelatedItems() == null) {
+        if (relatedItemsInfo == null || relatedItemsInfo.getRelatedItems() == null) {
             return null;
         }
 
@@ -97,8 +96,8 @@ public class RelatedItemsFragment extends BaseListInfoFragment<InfoItem, Related
     //////////////////////////////////////////////////////////////////////////*/
 
     @Override
-    protected Single<RelatedItemInfo> loadResult(final boolean forceLoad) {
+    protected Single<RelatedItemsInfo> loadResult(final boolean forceLoad) {
-        return Single.fromCallable(() -> relatedItemInfo);
+        return Single.fromCallable(() -> relatedItemsInfo);
     }
 
     @Override
@@ -110,7 +109,7 @@ public class RelatedItemsFragment extends BaseListInfoFragment<InfoItem, Related
     }
 
     @Override
-    public void handleResult(@NonNull final RelatedItemInfo result) {
+    public void handleResult(@NonNull final RelatedItemsInfo result) {
         super.handleResult(result);
 
         if (headerBinding != null) {
@@ -137,23 +136,23 @@ public class RelatedItemsFragment extends BaseListInfoFragment<InfoItem, Related
 
     private void setInitialData(final StreamInfo info) {
         super.setInitialData(info.getServiceId(), info.getUrl(), info.getName());
-        if (this.relatedItemInfo == null) {
+        if (this.relatedItemsInfo == null) {
-            this.relatedItemInfo = RelatedItemInfo.getInfo(info);
+            this.relatedItemsInfo = new RelatedItemsInfo(info);
         }
     }
 
     @Override
     public void onSaveInstanceState(@NonNull final Bundle outState) {
         super.onSaveInstanceState(outState);
-        outState.putSerializable(INFO_KEY, relatedItemInfo);
+        outState.putSerializable(INFO_KEY, relatedItemsInfo);
     }
 
     @Override
     protected void onRestoreInstanceState(@NonNull final Bundle savedState) {
         super.onRestoreInstanceState(savedState);
         final Serializable serializable = savedState.getSerializable(INFO_KEY);
-        if (serializable instanceof RelatedItemInfo) {
+        if (serializable instanceof RelatedItemsInfo) {
-            this.relatedItemInfo = (RelatedItemInfo) serializable;
+            this.relatedItemsInfo = (RelatedItemsInfo) serializable;
         }
     }
 

app/src/main/java/org/schabi/newpipe/fragments/list/videos/RelatedItemsInfo.java

@@ -0,0 +1,22 @@
+package org.schabi.newpipe.fragments.list.videos;
+
+import org.schabi.newpipe.extractor.InfoItem;
+import org.schabi.newpipe.extractor.ListInfo;
+import org.schabi.newpipe.extractor.linkhandler.ListLinkHandler;
+import org.schabi.newpipe.extractor.stream.StreamInfo;
+
+import java.util.ArrayList;
+import java.util.Collections;
+
+public final class RelatedItemsInfo extends ListInfo<InfoItem> {
+    /**
+     * This class is used to wrap the related items of a StreamInfo into a ListInfo object.
+     *
+     * @param info the stream info from which to get related items
+     */
+    public RelatedItemsInfo(final StreamInfo info) {
+        super(info.getServiceId(), new ListLinkHandler(info.getOriginalUrl(), info.getUrl(),
+                info.getId(), Collections.emptyList(), null), info.getName());
+        setRelatedItems(new ArrayList<>(info.getRelatedItems()));
+    }
+}

app/src/main/java/org/schabi/newpipe/info_list/InfoItemBuilder.java

@@ -13,8 +13,7 @@ import org.schabi.newpipe.extractor.playlist.PlaylistInfoItem;
 import org.schabi.newpipe.extractor.stream.StreamInfoItem;
 import org.schabi.newpipe.info_list.holder.ChannelInfoItemHolder;
 import org.schabi.newpipe.info_list.holder.ChannelMiniInfoItemHolder;
-import org.schabi.newpipe.info_list.holder.CommentsInfoItemHolder;
+import org.schabi.newpipe.info_list.holder.CommentInfoItemHolder;
-import org.schabi.newpipe.info_list.holder.CommentsMiniInfoItemHolder;
 import org.schabi.newpipe.info_list.holder.InfoItemHolder;
 import org.schabi.newpipe.info_list.holder.PlaylistInfoItemHolder;
 import org.schabi.newpipe.info_list.holder.PlaylistMiniInfoItemHolder;
@@ -87,8 +86,7 @@ public class InfoItemBuilder {
                 return useMiniVariant ? new PlaylistMiniInfoItemHolder(this, parent)
                         : new PlaylistInfoItemHolder(this, parent);
             case COMMENT:
-                return useMiniVariant ? new CommentsMiniInfoItemHolder(this, parent)
+                return new CommentInfoItemHolder(this, parent);
-                        : new CommentsInfoItemHolder(this, parent);
             default:
                 throw new RuntimeException("InfoType not expected = " + infoType.name());
         }

app/src/main/java/org/schabi/newpipe/info_list/InfoListAdapter.java

@@ -21,8 +21,7 @@ import org.schabi.newpipe.info_list.holder.ChannelCardInfoItemHolder;
 import org.schabi.newpipe.info_list.holder.ChannelGridInfoItemHolder;
 import org.schabi.newpipe.info_list.holder.ChannelInfoItemHolder;
 import org.schabi.newpipe.info_list.holder.ChannelMiniInfoItemHolder;
-import org.schabi.newpipe.info_list.holder.CommentsInfoItemHolder;
+import org.schabi.newpipe.info_list.holder.CommentInfoItemHolder;
-import org.schabi.newpipe.info_list.holder.CommentsMiniInfoItemHolder;
 import org.schabi.newpipe.info_list.holder.InfoItemHolder;
 import org.schabi.newpipe.info_list.holder.PlaylistCardInfoItemHolder;
 import org.schabi.newpipe.info_list.holder.PlaylistGridInfoItemHolder;
@@ -79,8 +78,7 @@ public class InfoListAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolde
     private static final int PLAYLIST_HOLDER_TYPE = 0x301;
     private static final int GRID_PLAYLIST_HOLDER_TYPE = 0x302;
     private static final int CARD_PLAYLIST_HOLDER_TYPE = 0x303;
-    private static final int MINI_COMMENT_HOLDER_TYPE = 0x400;
+    private static final int COMMENT_HOLDER_TYPE = 0x400;
-    private static final int COMMENT_HOLDER_TYPE = 0x401;
 
     private final LayoutInflater layoutInflater;
     private final InfoItemBuilder infoItemBuilder;
@@ -271,7 +269,7 @@ public class InfoListAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolde
                     return PLAYLIST_HOLDER_TYPE;
                 }
             case COMMENT:
-                return useMiniVariant ? MINI_COMMENT_HOLDER_TYPE : COMMENT_HOLDER_TYPE;
+                return COMMENT_HOLDER_TYPE;
             default:
                 return -1;
         }
@@ -320,10 +318,8 @@ public class InfoListAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolde
                 return new PlaylistGridInfoItemHolder(infoItemBuilder, parent);
             case CARD_PLAYLIST_HOLDER_TYPE:
                 return new PlaylistCardInfoItemHolder(infoItemBuilder, parent);
-            case MINI_COMMENT_HOLDER_TYPE:
-                return new CommentsMiniInfoItemHolder(infoItemBuilder, parent);
             case COMMENT_HOLDER_TYPE:
-                return new CommentsInfoItemHolder(infoItemBuilder, parent);
+                return new CommentInfoItemHolder(infoItemBuilder, parent);
             default:
                 return new FallbackViewHolder(new View(parent.getContext()));
         }

app/src/main/java/org/schabi/newpipe/info_list/holder/CommentInfoItemHolder.java

@@ -1,30 +1,28 @@
 package org.schabi.newpipe.info_list.holder;
 
 import static android.text.TextUtils.isEmpty;
+import static org.schabi.newpipe.util.ServiceHelper.getServiceById;
 
 import android.graphics.Paint;
 import android.text.Layout;
 import android.text.method.LinkMovementMethod;
 import android.text.style.URLSpan;
-import android.util.Log;
 import android.view.View;
 import android.view.ViewGroup;
+import android.widget.Button;
 import android.widget.ImageView;
 import android.widget.RelativeLayout;
 import android.widget.TextView;
 
+import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
-import androidx.appcompat.app.AppCompatActivity;
 import androidx.core.text.HtmlCompat;
+import androidx.fragment.app.FragmentActivity;
 
 import org.schabi.newpipe.R;
-import org.schabi.newpipe.error.ErrorUtil;
 import org.schabi.newpipe.extractor.InfoItem;
-import org.schabi.newpipe.extractor.NewPipe;
-import org.schabi.newpipe.extractor.ServiceList;
 import org.schabi.newpipe.extractor.StreamingService;
 import org.schabi.newpipe.extractor.comments.CommentsInfoItem;
-import org.schabi.newpipe.extractor.exceptions.ExtractionException;
 import org.schabi.newpipe.extractor.stream.Description;
 import org.schabi.newpipe.info_list.InfoItemBuilder;
 import org.schabi.newpipe.local.history.HistoryRecordManager;
@@ -41,8 +39,7 @@ import java.util.function.Consumer;
 
 import io.reactivex.rxjava3.disposables.CompositeDisposable;
 
-public class CommentsMiniInfoItemHolder extends InfoItemHolder {
+public class CommentInfoItemHolder extends InfoItemHolder {
-    private static final String TAG = "CommentsMiniIIHolder";
     private static final String ELLIPSIS = "…";
 
     private static final int COMMENT_DEFAULT_LINES = 2;
@@ -57,23 +54,34 @@ public class CommentsMiniInfoItemHolder extends InfoItemHolder {
     private final RelativeLayout itemRoot;
     private final ImageView itemThumbnailView;
     private final TextView itemContentView;
+    private final ImageView itemThumbsUpView;
     private final TextView itemLikesCountView;
-    private final TextView itemPublishedTime;
+    private final TextView itemTitleView;
+    private final ImageView itemHeartView;
+    private final ImageView itemPinnedView;
+    private final Button repliesButton;
 
     private final CompositeDisposable disposables = new CompositeDisposable();
-    @Nullable private Description commentText;
+    @Nullable
-    @Nullable private StreamingService streamService;
+    private Description commentText;
-    @Nullable private String streamUrl;
+    @Nullable
+    private StreamingService streamService;
+    @Nullable
+    private String streamUrl;
 
-    CommentsMiniInfoItemHolder(final InfoItemBuilder infoItemBuilder, final int layoutId,
+    public CommentInfoItemHolder(final InfoItemBuilder infoItemBuilder,
-                               final ViewGroup parent) {
+                                 final ViewGroup parent) {
-        super(infoItemBuilder, layoutId, parent);
+        super(infoItemBuilder, R.layout.list_comment_item, parent);
 
         itemRoot = itemView.findViewById(R.id.itemRoot);
         itemThumbnailView = itemView.findViewById(R.id.itemThumbnailView);
-        itemLikesCountView = itemView.findViewById(R.id.detail_thumbs_up_count_view);
-        itemPublishedTime = itemView.findViewById(R.id.itemPublishedTime);
         itemContentView = itemView.findViewById(R.id.itemCommentContentView);
+        itemThumbsUpView = itemView.findViewById(R.id.detail_thumbs_up_img_view);
+        itemLikesCountView = itemView.findViewById(R.id.detail_thumbs_up_count_view);
+        itemTitleView = itemView.findViewById(R.id.itemTitleView);
+        itemHeartView = itemView.findViewById(R.id.detail_heart_image_view);
+        itemPinnedView = itemView.findViewById(R.id.detail_pinned_view);
+        repliesButton = itemView.findViewById(R.id.replies_button);
 
         commentHorizontalPadding = (int) infoItemBuilder.getContext()
                 .getResources().getDimension(R.dimen.comments_horizontal_padding);
@@ -85,11 +93,6 @@ public class CommentsMiniInfoItemHolder extends InfoItemHolder {
         ellipsisWidthPx = paintAtContentSize.measureText(ELLIPSIS);
     }
 
-    public CommentsMiniInfoItemHolder(final InfoItemBuilder infoItemBuilder,
-                                      final ViewGroup parent) {
-        this(infoItemBuilder, R.layout.list_comments_mini_item, parent);
-    }
-
     @Override
     public void updateFromItem(final InfoItem infoItem,
                                final HistoryRecordManager historyRecordManager) {
@@ -98,6 +101,8 @@ public class CommentsMiniInfoItemHolder extends InfoItemHolder {
         }
         final CommentsInfoItem item = (CommentsInfoItem) infoItem;
 
+
+        // load the author avatar
         PicassoHelper.loadAvatar(item.getUploaderAvatars()).into(itemThumbnailView);
         if (ImageStrategy.shouldLoadImages()) {
             itemThumbnailView.setVisibility(View.VISIBLE);
@@ -108,18 +113,33 @@ public class CommentsMiniInfoItemHolder extends InfoItemHolder {
             itemRoot.setPadding(commentHorizontalPadding, commentVerticalPadding,
                     commentHorizontalPadding, commentVerticalPadding);
         }
-
-
         itemThumbnailView.setOnClickListener(view -> openCommentAuthor(item));
 
-        try {
+
-            streamService = NewPipe.getService(item.getServiceId());
+        // setup the top row, with pinned icon, author name and comment date
-        } catch (final ExtractionException e) {
+        itemPinnedView.setVisibility(item.isPinned() ? View.VISIBLE : View.GONE);
-            // should never happen
+        itemTitleView.setText(Localization.concatenateStrings(item.getUploaderName(),
-            ErrorUtil.showUiErrorSnackbar(itemBuilder.getContext(), "Getting StreamingService", e);
+                Localization.relativeTimeOrTextual(itemBuilder.getContext(), item.getUploadDate(),
-            Log.w(TAG, "Cannot obtain service from comment service id, defaulting to YouTube", e);
+                        item.getTextualUploadDate())));
-            streamService = ServiceList.YouTube;
+
-        }
+
+        // setup bottom row, with likes, heart and replies button
+        itemLikesCountView.setText(
+                Localization.likeCount(itemBuilder.getContext(), item.getLikeCount()));
+
+        itemHeartView.setVisibility(item.isHeartedByUploader() ? View.VISIBLE : View.GONE);
+
+        final boolean hasReplies = item.getReplies() != null;
+        repliesButton.setOnClickListener(hasReplies ? v -> openCommentReplies(item) : null);
+        repliesButton.setVisibility(hasReplies ? View.VISIBLE : View.GONE);
+        repliesButton.setText(hasReplies
+                ? Localization.replyCount(itemBuilder.getContext(), item.getReplyCount()) : "");
+        ((RelativeLayout.LayoutParams) itemThumbsUpView.getLayoutParams()).topMargin =
+                hasReplies ? 0 : DeviceUtils.dpToPx(6, itemBuilder.getContext());
+
+
+        // setup comment content and click listeners to expand/ellipsize it
+        streamService = getServiceById(item.getServiceId());
         streamUrl = item.getUrl();
         commentText = item.getCommentText();
         ellipsize();
@@ -127,22 +147,6 @@ public class CommentsMiniInfoItemHolder extends InfoItemHolder {
         //noinspection ClickableViewAccessibility
         itemContentView.setOnTouchListener(CommentTextOnTouchListener.INSTANCE);
 
-        if (item.getLikeCount() >= 0) {
-            itemLikesCountView.setText(
-                    Localization.shortCount(
-                            itemBuilder.getContext(),
-                            item.getLikeCount()));
-        } else {
-            itemLikesCountView.setText("-");
-        }
-
-        if (item.getUploadDate() != null) {
-            itemPublishedTime.setText(Localization.relativeTime(item.getUploadDate()
-                    .offsetDateTime()));
-        } else {
-            itemPublishedTime.setText(item.getTextualUploadDate());
-        }
-
         itemView.setOnClickListener(view -> {
             toggleEllipsize();
             if (itemBuilder.getOnCommentsSelectedListener() != null) {
@@ -150,7 +154,6 @@ public class CommentsMiniInfoItemHolder extends InfoItemHolder {
             }
         });
 
-
         itemView.setOnLongClickListener(view -> {
             if (DeviceUtils.isTv(itemBuilder.getContext())) {
                 openCommentAuthor(item);
@@ -164,20 +167,14 @@ public class CommentsMiniInfoItemHolder extends InfoItemHolder {
         });
     }
 
-    private void openCommentAuthor(final CommentsInfoItem item) {
+    private void openCommentAuthor(@NonNull final CommentsInfoItem item) {
-        if (isEmpty(item.getUploaderUrl())) {
+        NavigationHelper.openCommentAuthorIfPresent((FragmentActivity) itemBuilder.getContext(),
-            return;
+                item);
-        }
+    }
-        final AppCompatActivity activity = (AppCompatActivity) itemBuilder.getContext();
+
-        try {
+    private void openCommentReplies(@NonNull final CommentsInfoItem item) {
-            NavigationHelper.openChannelFragment(
+        NavigationHelper.openCommentRepliesFragment((FragmentActivity) itemBuilder.getContext(),
-                    activity.getSupportFragmentManager(),
+                item);
-                    item.getServiceId(),
-                    item.getUploaderUrl(),
-                    item.getUploaderName());
-        } catch (final Exception e) {
-            ErrorUtil.showUiErrorSnackbar(activity, "Opening channel fragment", e);
-        }
     }
 
     private void allowLinkFocus() {

app/src/main/java/org/schabi/newpipe/info_list/holder/CommentsInfoItemHolder.java

@@ -1,63 +0,0 @@
-package org.schabi.newpipe.info_list.holder;
-
-import android.view.View;
-import android.view.ViewGroup;
-import android.widget.ImageView;
-import android.widget.TextView;
-
-import org.schabi.newpipe.R;
-import org.schabi.newpipe.extractor.InfoItem;
-import org.schabi.newpipe.extractor.comments.CommentsInfoItem;
-import org.schabi.newpipe.info_list.InfoItemBuilder;
-import org.schabi.newpipe.local.history.HistoryRecordManager;
-
-/*
- * Created by Christian Schabesberger on 12.02.17.
- *
- * Copyright (C) Christian Schabesberger 2016 <chris.schabesberger@mailbox.org>
- * ChannelInfoItemHolder .java is part of NewPipe.
- *
- * NewPipe is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * NewPipe is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with NewPipe.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-public class CommentsInfoItemHolder extends CommentsMiniInfoItemHolder {
-    public final TextView itemTitleView;
-    private final ImageView itemHeartView;
-    private final ImageView itemPinnedView;
-
-    public CommentsInfoItemHolder(final InfoItemBuilder infoItemBuilder, final ViewGroup parent) {
-        super(infoItemBuilder, R.layout.list_comments_item, parent);
-
-        itemTitleView = itemView.findViewById(R.id.itemTitleView);
-        itemHeartView = itemView.findViewById(R.id.detail_heart_image_view);
-        itemPinnedView = itemView.findViewById(R.id.detail_pinned_view);
-    }
-
-    @Override
-    public void updateFromItem(final InfoItem infoItem,
-                               final HistoryRecordManager historyRecordManager) {
-        super.updateFromItem(infoItem, historyRecordManager);
-
-        if (!(infoItem instanceof CommentsInfoItem)) {
-            return;
-        }
-        final CommentsInfoItem item = (CommentsInfoItem) infoItem;
-
-        itemTitleView.setText(item.getUploaderName());
-
-        itemHeartView.setVisibility(item.isHeartedByUploader() ? View.VISIBLE : View.GONE);
-
-        itemPinnedView.setVisibility(item.isPinned() ? View.VISIBLE : View.GONE);
-    }
-}

app/src/main/java/org/schabi/newpipe/info_list/holder/StreamInfoItemHolder.java

@@ -12,10 +12,6 @@ import org.schabi.newpipe.info_list.InfoItemBuilder;
 import org.schabi.newpipe.local.history.HistoryRecordManager;
 import org.schabi.newpipe.util.Localization;
 
-import androidx.preference.PreferenceManager;
-
-import static org.schabi.newpipe.MainActivity.DEBUG;
-
 /*
  * Created by Christian Schabesberger on 01.08.16.
  * <p>
@@ -81,7 +77,9 @@ public class StreamInfoItemHolder extends StreamMiniInfoItemHolder {
             }
         }
 
-        final String uploadDate = getFormattedRelativeUploadDate(infoItem);
+        final String uploadDate = Localization.relativeTimeOrTextual(itemBuilder.getContext(),
+                infoItem.getUploadDate(),
+                infoItem.getTextualUploadDate());
         if (!TextUtils.isEmpty(uploadDate)) {
             if (viewsAndDate.isEmpty()) {
                 return uploadDate;
@@ -92,20 +90,4 @@ public class StreamInfoItemHolder extends StreamMiniInfoItemHolder {
 
         return viewsAndDate;
     }
-
-    private String getFormattedRelativeUploadDate(final StreamInfoItem infoItem) {
-        if (infoItem.getUploadDate() != null) {
-            String formattedRelativeTime = Localization
-                    .relativeTime(infoItem.getUploadDate().offsetDateTime());
-
-            if (DEBUG && PreferenceManager.getDefaultSharedPreferences(itemBuilder.getContext())
-                    .getBoolean(itemBuilder.getContext()
-                            .getString(R.string.show_original_time_ago_key), false)) {
-                formattedRelativeTime += " (" + infoItem.getTextualUploadDate() + ")";
-            }
-            return formattedRelativeTime;
-        } else {
-            return infoItem.getTextualUploadDate();
-        }
-    }
 }

app/src/main/java/org/schabi/newpipe/util/ExtractorHelper.java

@@ -162,6 +162,15 @@ public final class ExtractorHelper {
                 CommentsInfo.getMoreItems(NewPipe.getService(serviceId), info, nextPage));
     }
 
+    public static Single<InfoItemsPage<CommentsInfoItem>> getMoreCommentItems(
+            final int serviceId,
+            final String url,
+            final Page nextPage) {
+        checkServiceId(serviceId);
+        return Single.fromCallable(() ->
+                CommentsInfo.getMoreItems(NewPipe.getService(serviceId), url, nextPage));
+    }
+
     public static Single<PlaylistInfo> getPlaylistInfo(final int serviceId,
                                                        final String url,
                                                        final boolean forceLoad) {

app/src/main/java/org/schabi/newpipe/util/Localization.java

@@ -1,5 +1,7 @@
 package org.schabi.newpipe.util;
 
+import static org.schabi.newpipe.MainActivity.DEBUG;
+
 import android.annotation.SuppressLint;
 import android.content.Context;
 import android.content.SharedPreferences;
@@ -22,6 +24,7 @@ import org.ocpsoft.prettytime.units.Decade;
 import org.schabi.newpipe.R;
 import org.schabi.newpipe.extractor.ListExtractor;
 import org.schabi.newpipe.extractor.localization.ContentCountry;
+import org.schabi.newpipe.extractor.localization.DateWrapper;
 import org.schabi.newpipe.extractor.stream.AudioStream;
 import org.schabi.newpipe.extractor.stream.AudioTrackType;
 
@@ -82,7 +85,7 @@ public final class Localization {
                 .fromLocale(getPreferredLocale(context));
     }
 
-    public static ContentCountry getPreferredContentCountry(final Context context) {
+    public static ContentCountry getPreferredContentCountry(@NonNull final Context context) {
         final String contentCountry = PreferenceManager.getDefaultSharedPreferences(context)
                 .getString(context.getString(R.string.content_country_key),
                         context.getString(R.string.default_localization_key));
@@ -92,41 +95,43 @@ public final class Localization {
         return new ContentCountry(contentCountry);
     }
 
-    public static Locale getPreferredLocale(final Context context) {
+    public static Locale getPreferredLocale(@NonNull final Context context) {
         return getLocaleFromPrefs(context, R.string.content_language_key);
     }
 
-    public static Locale getAppLocale(final Context context) {
+    public static Locale getAppLocale(@NonNull final Context context) {
         return getLocaleFromPrefs(context, R.string.app_language_key);
     }
 
-    public static String localizeNumber(final Context context, final long number) {
+    public static String localizeNumber(@NonNull final Context context, final long number) {
         return localizeNumber(context, (double) number);
     }
 
-    public static String localizeNumber(final Context context, final double number) {
+    public static String localizeNumber(@NonNull final Context context, final double number) {
         final NumberFormat nf = NumberFormat.getInstance(getAppLocale(context));
         return nf.format(number);
     }
 
-    public static String formatDate(final OffsetDateTime offsetDateTime, final Context context) {
+    public static String formatDate(@NonNull final Context context,
+                                    @NonNull final OffsetDateTime offsetDateTime) {
         return DateTimeFormatter.ofLocalizedDate(FormatStyle.MEDIUM)
                 .withLocale(getAppLocale(context)).format(offsetDateTime
                         .atZoneSameInstant(ZoneId.systemDefault()));
     }
 
     @SuppressLint("StringFormatInvalid")
-    public static String localizeUploadDate(final Context context,
+    public static String localizeUploadDate(@NonNull final Context context,
-                                            final OffsetDateTime offsetDateTime) {
+                                            @NonNull final OffsetDateTime offsetDateTime) {
-        return context.getString(R.string.upload_date_text, formatDate(offsetDateTime, context));
+        return context.getString(R.string.upload_date_text, formatDate(context, offsetDateTime));
     }
 
-    public static String localizeViewCount(final Context context, final long viewCount) {
+    public static String localizeViewCount(@NonNull final Context context, final long viewCount) {
         return getQuantity(context, R.plurals.views, R.string.no_views, viewCount,
                 localizeNumber(context, viewCount));
     }
 
-    public static String localizeStreamCount(final Context context, final long streamCount) {
+    public static String localizeStreamCount(@NonNull final Context context,
+                                             final long streamCount) {
         switch ((int) streamCount) {
             case (int) ListExtractor.ITEM_COUNT_UNKNOWN:
                 return "";
@@ -140,7 +145,8 @@ public final class Localization {
         }
     }
 
-    public static String localizeStreamCountMini(final Context context, final long streamCount) {
+    public static String localizeStreamCountMini(@NonNull final Context context,
+                                                 final long streamCount) {
         switch ((int) streamCount) {
             case (int) ListExtractor.ITEM_COUNT_UNKNOWN:
                 return "";
@@ -153,12 +159,13 @@ public final class Localization {
         }
     }
 
-    public static String localizeWatchingCount(final Context context, final long watchingCount) {
+    public static String localizeWatchingCount(@NonNull final Context context,
+                                               final long watchingCount) {
         return getQuantity(context, R.plurals.watching, R.string.no_one_watching, watchingCount,
                 localizeNumber(context, watchingCount));
     }
 
-    public static String shortCount(final Context context, final long count) {
+    public static String shortCount(@NonNull final Context context, final long count) {
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
             return CompactDecimalFormat.getInstance(getAppLocale(context),
                     CompactDecimalFormat.CompactStyle.SHORT).format(count);
@@ -179,36 +186,58 @@ public final class Localization {
         }
     }
 
-    public static String listeningCount(final Context context, final long listeningCount) {
+    public static String listeningCount(@NonNull final Context context, final long listeningCount) {
         return getQuantity(context, R.plurals.listening, R.string.no_one_listening, listeningCount,
                 shortCount(context, listeningCount));
     }
 
-    public static String shortWatchingCount(final Context context, final long watchingCount) {
+    public static String shortWatchingCount(@NonNull final Context context,
+                                            final long watchingCount) {
         return getQuantity(context, R.plurals.watching, R.string.no_one_watching, watchingCount,
                 shortCount(context, watchingCount));
     }
 
-    public static String shortViewCount(final Context context, final long viewCount) {
+    public static String shortViewCount(@NonNull final Context context, final long viewCount) {
         return getQuantity(context, R.plurals.views, R.string.no_views, viewCount,
                 shortCount(context, viewCount));
     }
 
-    public static String shortSubscriberCount(final Context context, final long subscriberCount) {
+    public static String shortSubscriberCount(@NonNull final Context context,
+                                              final long subscriberCount) {
         return getQuantity(context, R.plurals.subscribers, R.string.no_subscribers, subscriberCount,
                 shortCount(context, subscriberCount));
     }
 
-    public static String downloadCount(final Context context, final int downloadCount) {
+    public static String downloadCount(@NonNull final Context context, final int downloadCount) {
         return getQuantity(context, R.plurals.download_finished_notification, 0,
                 downloadCount, shortCount(context, downloadCount));
     }
 
-    public static String deletedDownloadCount(final Context context, final int deletedCount) {
+    public static String deletedDownloadCount(@NonNull final Context context,
+                                              final int deletedCount) {
         return getQuantity(context, R.plurals.deleted_downloads_toast, 0,
                 deletedCount, shortCount(context, deletedCount));
     }
 
+    public static String replyCount(@NonNull final Context context, final int replyCount) {
+        return getQuantity(context, R.plurals.replies, 0, replyCount,
+                String.valueOf(replyCount));
+    }
+
+    /**
+     * @param context the Android context
+     * @param likeCount the like count, possibly negative if unknown
+     * @return if {@code likeCount} is smaller than {@code 0}, the string {@code "-"}, otherwise
+     *         the result of calling {@link #shortCount(Context, long)} on the like count
+     */
+    public static String likeCount(@NonNull final Context context, final int likeCount) {
+        if (likeCount < 0) {
+            return "-";
+        } else {
+            return shortCount(context, likeCount);
+        }
+    }
+
     public static String getDurationString(final long duration) {
         final String output;
 
@@ -241,7 +270,8 @@ public final class Localization {
      * @return duration in a human readable string.
      */
     @NonNull
-    public static String localizeDuration(final Context context, final int durationInSecs) {
+    public static String localizeDuration(@NonNull final Context context,
+                                          final int durationInSecs) {
         if (durationInSecs < 0) {
             throw new IllegalArgumentException("duration can not be negative");
         }
@@ -278,7 +308,7 @@ public final class Localization {
      * @param track   an {@link AudioStream} of the track
      * @return the localized name of the audio track
      */
-    public static String audioTrackName(final Context context, final AudioStream track) {
+    public static String audioTrackName(@NonNull final Context context, final AudioStream track) {
         final String name;
         if (track.getAudioLocale() != null) {
             name = track.getAudioLocale().getDisplayLanguage(getAppLocale(context));
@@ -298,7 +328,8 @@ public final class Localization {
     }
 
     @Nullable
-    private static String audioTrackType(final Context context, final AudioTrackType trackType) {
+    private static String audioTrackType(@NonNull final Context context,
+                                         final AudioTrackType trackType) {
         switch (trackType) {
             case ORIGINAL:
                 return context.getString(R.string.audio_track_type_original);
@@ -314,20 +345,45 @@ public final class Localization {
     // Pretty Time
     //////////////////////////////////////////////////////////////////////////*/
 
-    public static void initPrettyTime(final PrettyTime time) {
+    public static void initPrettyTime(@NonNull final PrettyTime time) {
         prettyTime = time;
         // Do not use decades as YouTube doesn't either.
         prettyTime.removeUnit(Decade.class);
     }
 
-    public static PrettyTime resolvePrettyTime(final Context context) {
+    public static PrettyTime resolvePrettyTime(@NonNull final Context context) {
         return new PrettyTime(getAppLocale(context));
     }
 
-    public static String relativeTime(final OffsetDateTime offsetDateTime) {
+    public static String relativeTime(@NonNull final OffsetDateTime offsetDateTime) {
         return prettyTime.formatUnrounded(offsetDateTime);
     }
 
+    /**
+     * @param context the Android context; if {@code null} then even if in debug mode and the
+     *                setting is enabled, {@code textual} will not be shown next to {@code parsed}
+     * @param parsed  the textual date or time ago parsed by NewPipeExtractor, or {@code null} if
+     *                the extractor could not parse it
+     * @param textual the original textual date or time ago string as provided by services
+     * @return {@link #relativeTime(OffsetDateTime)} is used if {@code parsed != null}, otherwise
+     *         {@code textual} is returned. If in debug mode, {@code context != null},
+     *         {@code parsed != null} and the relevant setting is enabled, {@code textual} will
+     *         be appended to the returned string for debugging purposes.
+     */
+    public static String relativeTimeOrTextual(@Nullable final Context context,
+                                               @Nullable final DateWrapper parsed,
+                                               final String textual) {
+        if (parsed == null) {
+            return textual;
+        } else if (DEBUG && context != null && PreferenceManager
+                .getDefaultSharedPreferences(context)
+                .getBoolean(context.getString(R.string.show_original_time_ago_key), false)) {
+            return relativeTime(parsed.offsetDateTime()) + " (" + textual + ")";
+        } else {
+            return relativeTime(parsed.offsetDateTime());
+        }
+    }
+
     public static void assureCorrectAppLanguage(final Context c) {
         final Resources res = c.getResources();
         final DisplayMetrics dm = res.getDisplayMetrics();
@@ -336,7 +392,8 @@ public final class Localization {
         res.updateConfiguration(conf, dm);
     }
 
-    private static Locale getLocaleFromPrefs(final Context context, @StringRes final int prefKey) {
+    private static Locale getLocaleFromPrefs(@NonNull final Context context,
+                                             @StringRes final int prefKey) {
         final SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(context);
         final String defaultKey = context.getString(R.string.default_localization_key);
         final String languageCode = sp.getString(context.getString(prefKey), defaultKey);
@@ -352,8 +409,10 @@ public final class Localization {
         return new BigDecimal(value).setScale(1, RoundingMode.HALF_UP).doubleValue();
     }
 
-    private static String getQuantity(final Context context, @PluralsRes final int pluralId,
+    private static String getQuantity(@NonNull final Context context,
-                                      @StringRes final int zeroCaseStringId, final long count,
+                                      @PluralsRes final int pluralId,
+                                      @StringRes final int zeroCaseStringId,
+                                      final long count,
                                       final String formattedCount) {
         if (count == 0) {
             return context.getString(zeroCaseStringId);

app/src/main/java/org/schabi/newpipe/util/NavigationHelper.java

@@ -1,5 +1,6 @@
 package org.schabi.newpipe.util;
 
+import static android.text.TextUtils.isEmpty;
 import static org.schabi.newpipe.util.ListHelper.getUrlAndNonTorrentStreams;
 
 import android.annotation.SuppressLint;
@@ -17,6 +18,7 @@ import androidx.appcompat.app.AlertDialog;
 import androidx.appcompat.app.AppCompatActivity;
 import androidx.core.content.ContextCompat;
 import androidx.fragment.app.Fragment;
+import androidx.fragment.app.FragmentActivity;
 import androidx.fragment.app.FragmentManager;
 import androidx.fragment.app.FragmentTransaction;
 
@@ -29,8 +31,10 @@ import org.schabi.newpipe.RouterActivity;
 import org.schabi.newpipe.about.AboutActivity;
 import org.schabi.newpipe.database.feed.model.FeedGroupEntity;
 import org.schabi.newpipe.download.DownloadActivity;
+import org.schabi.newpipe.error.ErrorUtil;
 import org.schabi.newpipe.extractor.NewPipe;
 import org.schabi.newpipe.extractor.StreamingService;
+import org.schabi.newpipe.extractor.comments.CommentsInfoItem;
 import org.schabi.newpipe.extractor.exceptions.ExtractionException;
 import org.schabi.newpipe.extractor.stream.AudioStream;
 import org.schabi.newpipe.extractor.stream.DeliveryMethod;
@@ -41,6 +45,7 @@ import org.schabi.newpipe.extractor.stream.VideoStream;
 import org.schabi.newpipe.fragments.MainFragment;
 import org.schabi.newpipe.fragments.detail.VideoDetailFragment;
 import org.schabi.newpipe.fragments.list.channel.ChannelFragment;
+import org.schabi.newpipe.fragments.list.comments.CommentRepliesFragment;
 import org.schabi.newpipe.fragments.list.kiosk.KioskFragment;
 import org.schabi.newpipe.fragments.list.playlist.PlaylistFragment;
 import org.schabi.newpipe.fragments.list.search.SearchFragment;
@@ -476,6 +481,35 @@ public final class NavigationHelper {
                 item.getServiceId(), uploaderUrl, item.getUploaderName());
     }
 
+    /**
+     * Opens the comment author channel fragment, if the {@link CommentsInfoItem#getUploaderUrl()}
+     * of {@code comment} is non-null. Shows a UI-error snackbar if something goes wrong.
+     *
+     * @param activity the activity with the fragment manager and in which to show the snackbar
+     * @param comment the comment whose uploader/author will be opened
+     */
+    public static void openCommentAuthorIfPresent(@NonNull final FragmentActivity activity,
+                                                  @NonNull final CommentsInfoItem comment) {
+        if (isEmpty(comment.getUploaderUrl())) {
+            return;
+        }
+        try {
+            openChannelFragment(activity.getSupportFragmentManager(), comment.getServiceId(),
+                    comment.getUploaderUrl(), comment.getUploaderName());
+        } catch (final Exception e) {
+            ErrorUtil.showUiErrorSnackbar(activity, "Opening channel fragment", e);
+        }
+    }
+
+    public static void openCommentRepliesFragment(@NonNull final FragmentActivity activity,
+                                                  @NonNull final CommentsInfoItem comment) {
+        defaultTransaction(activity.getSupportFragmentManager())
+                .replace(R.id.fragment_holder, new CommentRepliesFragment(comment),
+                        CommentRepliesFragment.TAG)
+                .addToBackStack(CommentRepliesFragment.TAG)
+                .commit();
+    }
+
     public static void openPlaylistFragment(final FragmentManager fragmentManager,
                                             final int serviceId, final String url,
                                             @NonNull final String name) {

app/src/main/java/org/schabi/newpipe/util/RelatedItemInfo.java

@@ -1,27 +0,0 @@
-package org.schabi.newpipe.util;
-
-import org.schabi.newpipe.extractor.InfoItem;
-import org.schabi.newpipe.extractor.ListInfo;
-import org.schabi.newpipe.extractor.linkhandler.ListLinkHandler;
-import org.schabi.newpipe.extractor.stream.StreamInfo;
-
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.List;
-
-public class RelatedItemInfo extends ListInfo<InfoItem> {
-    public RelatedItemInfo(final int serviceId, final ListLinkHandler listUrlIdHandler,
-                           final String name) {
-        super(serviceId, listUrlIdHandler, name);
-    }
-
-    public static RelatedItemInfo getInfo(final StreamInfo info) {
-        final ListLinkHandler handler = new ListLinkHandler(
-                info.getOriginalUrl(), info.getUrl(), info.getId(), Collections.emptyList(), null);
-        final RelatedItemInfo relatedItemInfo = new RelatedItemInfo(
-                info.getServiceId(), handler, info.getName());
-        final List<InfoItem> relatedItems = new ArrayList<>(info.getRelatedItems());
-        relatedItemInfo.setRelatedItems(relatedItems);
-        return relatedItemInfo;
-    }
-}

app/src/main/java/org/schabi/newpipe/util/ServiceHelper.java

@@ -144,6 +144,19 @@ public final class ServiceHelper {
                 .orElse("<unknown>");
     }
 
+    /**
+     * @param serviceId the id of the service
+     * @return the service corresponding to the provided id
+     * @throws java.util.NoSuchElementException if there is no service with the provided id
+     */
+    @NonNull
+    public static StreamingService getServiceById(final int serviceId) {
+        return ServiceList.all().stream()
+                .filter(s -> s.getServiceId() == serviceId)
+                .findFirst()
+                .orElseThrow();
+    }
+
     public static void setSelectedServiceId(final Context context, final int serviceId) {
         String serviceName;
         try {

app/src/main/res/layout/comment_replies_header.xml

@@ -0,0 +1,137 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content">
+
+    <com.google.android.material.imageview.ShapeableImageView
+        android:id="@+id/authorAvatar"
+        android:layout_width="42dp"
+        android:layout_height="42dp"
+        android:layout_marginStart="16dp"
+        android:layout_marginTop="16dp"
+        android:focusable="false"
+        android:src="@drawable/placeholder_person"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:shapeAppearance="@style/CircularImageView"
+        tools:ignore="RtlHardcoded" />
+
+    <org.schabi.newpipe.views.NewPipeTextView
+        android:id="@+id/authorName"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="8dp"
+        android:layout_marginEnd="8dp"
+        android:ellipsize="end"
+        android:lines="1"
+        android:textAppearance="?android:attr/textAppearanceLarge"
+        android:textSize="16sp"
+        app:layout_constraintBottom_toTopOf="@+id/uploadDate"
+        app:layout_constraintEnd_toStartOf="@+id/thumbsUpImage"
+        app:layout_constraintStart_toEndOf="@+id/authorAvatar"
+        app:layout_constraintTop_toTopOf="@+id/authorAvatar"
+        tools:text="@tools:sample/lorem/random" />
+
+    <org.schabi.newpipe.views.NewPipeTextView
+        android:id="@+id/uploadDate"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="8dp"
+        android:layout_marginEnd="8dp"
+        android:ellipsize="end"
+        android:lines="1"
+        android:textAppearance="?android:attr/textAppearanceSmall"
+        android:textSize="14sp"
+        app:layout_constraintBottom_toBottomOf="@+id/authorAvatar"
+        app:layout_constraintEnd_toStartOf="@+id/thumbsUpImage"
+        app:layout_constraintStart_toEndOf="@+id/authorAvatar"
+        app:layout_constraintTop_toBottomOf="@+id/authorName"
+        tools:text="5 months ago" />
+
+    <ImageView
+        android:id="@+id/thumbsUpImage"
+        android:layout_width="21sp"
+        android:layout_height="21sp"
+        android:layout_marginEnd="@dimen/video_item_detail_like_margin"
+        android:contentDescription="@string/detail_likes_img_view_description"
+        android:src="@drawable/ic_thumb_up"
+        app:layout_constraintBottom_toBottomOf="@+id/authorAvatar"
+        app:layout_constraintEnd_toStartOf="@+id/thumbsUpCount"
+        app:layout_constraintTop_toTopOf="@+id/authorAvatar" />
+
+    <org.schabi.newpipe.views.NewPipeTextView
+        android:id="@+id/thumbsUpCount"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginEnd="8dp"
+        android:gravity="center"
+        android:lines="1"
+        android:textAppearance="?android:attr/textAppearanceMedium"
+        android:textSize="14sp"
+        app:layout_constraintBottom_toBottomOf="@+id/authorAvatar"
+        app:layout_constraintEnd_toStartOf="@+id/heartImage"
+        app:layout_constraintTop_toTopOf="@+id/authorAvatar"
+        tools:text="12M" />
+
+    <ImageView
+        android:id="@+id/heartImage"
+        android:layout_width="21sp"
+        android:layout_height="21sp"
+        android:layout_marginEnd="4dp"
+        android:contentDescription="@string/detail_heart_img_view_description"
+        android:src="@drawable/ic_heart"
+        app:layout_constraintBottom_toBottomOf="@+id/authorAvatar"
+        app:layout_constraintEnd_toStartOf="@+id/pinnedImage"
+        app:layout_constraintTop_toTopOf="@+id/authorAvatar"
+        app:layout_goneMarginEnd="16dp" />
+
+    <View
+        android:id="@+id/authorTouchArea"
+        android:layout_width="0dp"
+        android:layout_height="0dp"
+        android:layout_margin="8dp"
+        android:background="?attr/selectableItemBackground"
+        app:layout_constraintBottom_toTopOf="@+id/commentContent"
+        app:layout_constraintEnd_toStartOf="@+id/thumbsUpImage"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <ImageView
+        android:id="@+id/pinnedImage"
+        android:layout_width="21sp"
+        android:layout_height="21sp"
+        android:layout_marginEnd="16dp"
+        android:contentDescription="@string/detail_pinned_comment_view_description"
+        android:src="@drawable/ic_pin"
+        app:layout_constraintBottom_toBottomOf="@+id/authorAvatar"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintTop_toTopOf="@+id/authorAvatar" />
+
+    <org.schabi.newpipe.views.NewPipeTextView
+        android:id="@+id/commentContent"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="16dp"
+        android:layout_marginTop="16dp"
+        android:layout_marginEnd="16dp"
+        android:textAppearance="?android:attr/textAppearanceLarge"
+        android:textSize="14sp"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/authorAvatar"
+        tools:text="@tools:sample/lorem/random[10]" />
+
+    <View
+        android:layout_width="match_parent"
+        android:layout_height="1px"
+        android:layout_marginTop="16dp"
+        android:layout_marginBottom="8dp"
+        android:background="?attr/separator_color"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/commentContent" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/layout/fragment_comments.xml

@@ -9,7 +9,7 @@
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         android:scrollbars="vertical"
-        tools:listitem="@layout/list_comments_item" />
+        tools:listitem="@layout/list_comment_item" />
 
     <ProgressBar
         android:id="@+id/loading_progress_bar"

app/src/main/res/layout/list_comment_item.xml

@@ -15,10 +15,8 @@
         android:layout_width="42dp"
         android:layout_height="42dp"
         android:layout_alignParentStart="true"
-        android:layout_alignParentLeft="true"
         android:layout_alignParentTop="true"
-        android:layout_marginLeft="3dp"
+        android:layout_marginEnd="@dimen/comment_item_avatar_right_margin"
-        android:layout_marginRight="@dimen/comment_item_avatar_right_margin"
         android:focusable="false"
         android:src="@drawable/placeholder_person"
         app:shapeAppearance="@style/CircularImageView"
@@ -29,83 +27,78 @@
         android:layout_width="@dimen/video_item_detail_pinned_image_width"
         android:layout_height="@dimen/video_item_detail_pinned_image_height"
         android:layout_alignParentTop="true"
-        android:layout_marginRight="@dimen/video_item_detail_pinned_right_margin"
+        android:layout_marginEnd="@dimen/video_item_detail_pinned_right_margin"
         android:layout_toEndOf="@+id/itemThumbnailView"
         android:contentDescription="@string/detail_pinned_comment_view_description"
-        android:src="@drawable/ic_pin"
+        android:src="@drawable/ic_pin" />
-        android:visibility="gone"
-        tools:visibility="visible" />
 
     <org.schabi.newpipe.views.NewPipeTextView
         android:id="@+id/itemTitleView"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:layout_alignParentTop="true"
-        android:layout_marginBottom="@dimen/video_item_search_image_right_margin"
         android:layout_toEndOf="@+id/detail_pinned_view"
         android:ellipsize="end"
         android:lines="1"
         android:textAppearance="?android:attr/textAppearanceSmall"
         android:textSize="@dimen/comment_item_title_text_size"
-        tools:text="Author Name, Lorem ipsum" />
+        tools:text="Author Name, Lorem ipsum • 5 months ago" />
 
     <org.schabi.newpipe.views.NewPipeTextView
         android:id="@+id/itemCommentContentView"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:layout_below="@id/itemTitleView"
-        android:layout_marginBottom="@dimen/channel_item_description_to_details_margin"
+        android:layout_marginTop="6dp"
         android:layout_toEndOf="@+id/itemThumbnailView"
-        android:layout_toRightOf="@+id/itemThumbnailView"
         android:textAppearance="?android:attr/textAppearanceLarge"
         android:textSize="@dimen/comment_item_content_text_size"
-        tools:text="Comment Content, Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nunc tristique vitae sem vitae blanditLorem ipsum dolor sit amet, consectetur adipiscing elit. Nunc tristique vitae sem vitae blanditLorem ipsum dolor sit amet, consectetur adipiscing elit. Nunc tristique vitae sem vitae blandit" />
+        tools:text="@tools:sample/lorem/random[1]" />
-
 
     <ImageView
         android:id="@+id/detail_thumbs_up_img_view"
         android:layout_width="@dimen/video_item_detail_like_image_width"
         android:layout_height="@dimen/video_item_detail_like_image_height"
         android:layout_below="@id/itemCommentContentView"
-        android:layout_toRightOf="@+id/itemThumbnailView"
+        android:layout_alignBottom="@+id/replies_button"
+        android:layout_toEndOf="@+id/itemThumbnailView"
         android:contentDescription="@string/detail_likes_img_view_description"
         android:src="@drawable/ic_thumb_up" />
 
     <org.schabi.newpipe.views.NewPipeTextView
         android:id="@+id/detail_thumbs_up_count_view"
         android:layout_width="wrap_content"
-        android:layout_height="@dimen/video_item_detail_like_image_height"
+        android:layout_height="wrap_content"
-        android:layout_below="@id/itemCommentContentView"
+        android:layout_alignTop="@id/detail_thumbs_up_img_view"
-        android:layout_marginLeft="@dimen/video_item_detail_like_margin"
+        android:layout_alignBottom="@id/detail_thumbs_up_img_view"
-        android:layout_toRightOf="@id/detail_thumbs_up_img_view"
+        android:layout_marginStart="@dimen/video_item_detail_like_margin"
+        android:layout_toEndOf="@id/detail_thumbs_up_img_view"
+        android:gravity="center"
         android:lines="1"
         android:textAppearance="?android:attr/textAppearanceMedium"
         android:textSize="@dimen/video_item_detail_likes_text_size"
-        tools:ignore="RtlHardcoded"
         tools:text="12M" />
 
     <ImageView
         android:id="@+id/detail_heart_image_view"
         android:layout_width="@dimen/video_item_detail_heart_image_size"
         android:layout_height="@dimen/video_item_detail_heart_image_size"
-        android:layout_below="@id/itemCommentContentView"
+        android:layout_alignTop="@id/detail_thumbs_up_img_view"
-        android:layout_marginLeft="@dimen/video_item_detail_heart_margin"
+        android:layout_alignBottom="@id/detail_thumbs_up_img_view"
-        android:layout_toRightOf="@+id/detail_thumbs_up_count_view"
+        android:layout_marginStart="@dimen/video_item_detail_heart_margin"
+        android:layout_toEndOf="@+id/detail_thumbs_up_count_view"
         android:contentDescription="@string/detail_heart_img_view_description"
-        android:src="@drawable/ic_heart"
+        android:src="@drawable/ic_heart" />
-        android:visibility="gone"
-        tools:visibility="visible" />
 
-    <org.schabi.newpipe.views.NewPipeTextView
+    <Button
-        android:id="@+id/itemPublishedTime"
+        android:id="@+id/replies_button"
+        style="?android:attr/borderlessButtonStyle"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_below="@id/itemCommentContentView"
-        android:layout_marginLeft="12dp"
+        android:layout_alignParentEnd="true"
-        android:layout_toRightOf="@id/detail_heart_image_view"
+        android:layout_marginStart="@dimen/video_item_detail_heart_margin"
-        android:lines="1"
+        android:minHeight="0dp"
-        android:textAppearance="?android:attr/textAppearanceSmall"
+        tools:text="543 replies" />
-        android:textSize="@dimen/video_item_search_upload_date_text_size"
-        tools:text="1 year ago" />
 
 </RelativeLayout>

app/src/main/res/layout/list_comments_mini_item.xml

@@ -1,69 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
-    xmlns:tools="http://schemas.android.com/tools"
-    android:id="@+id/itemRoot"
-    android:layout_width="match_parent"
-    android:layout_height="wrap_content"
-    android:background="?attr/selectableItemBackground"
-    android:clickable="true"
-    android:focusable="true"
-    android:padding="@dimen/video_item_search_padding">
-
-    <com.google.android.material.imageview.ShapeableImageView
-        android:id="@+id/itemThumbnailView"
-        android:layout_width="42dp"
-        android:layout_height="42dp"
-        android:layout_centerVertical="true"
-        android:layout_marginStart="3dp"
-        android:layout_marginRight="15dp"
-        android:src="@drawable/placeholder_person"
-        app:shapeAppearance="@style/CircularImageView"
-        tools:ignore="RtlHardcoded" />
-
-
-    <org.schabi.newpipe.views.NewPipeTextView
-        android:id="@+id/itemCommentContentView"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:layout_marginBottom="@dimen/channel_item_description_to_details_margin"
-        android:layout_toRightOf="@+id/itemThumbnailView"
-        android:textAppearance="?android:attr/textAppearanceSmall"
-        android:textSize="@dimen/comment_item_content_text_size"
-        tools:text="Channel description, Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nunc tristique vitae sem vitae blanditLorem ipsum dolor sit amet, consectetur adipiscing elit. Nunc tristique vitae sem vitae blanditLorem ipsum dolor sit amet, consectetur adipiscing elit. Nunc tristique vitae sem vitae blandit" />
-
-    <ImageView
-        android:id="@+id/detail_thumbs_up_img_view"
-        android:layout_width="@dimen/video_item_detail_like_image_width"
-        android:layout_height="@dimen/video_item_detail_like_image_height"
-        android:layout_below="@id/itemCommentContentView"
-        android:layout_toRightOf="@+id/itemThumbnailView"
-        android:contentDescription="@string/detail_likes_img_view_description"
-        android:src="@drawable/ic_thumb_up" />
-
-    <org.schabi.newpipe.views.NewPipeTextView
-        android:id="@+id/detail_thumbs_up_count_view"
-        android:layout_width="wrap_content"
-        android:layout_height="@dimen/video_item_detail_like_image_height"
-        android:layout_below="@id/itemCommentContentView"
-        android:layout_marginLeft="@dimen/video_item_detail_like_margin"
-        android:layout_toRightOf="@id/detail_thumbs_up_img_view"
-        android:lines="1"
-        android:textAppearance="?android:attr/textAppearanceMedium"
-        android:textSize="@dimen/video_item_detail_likes_text_size"
-        tools:ignore="RtlHardcoded"
-        tools:text="12M" />
-
-    <org.schabi.newpipe.views.NewPipeTextView
-        android:id="@+id/itemPublishedTime"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_below="@id/itemCommentContentView"
-        android:layout_marginLeft="12dp"
-        android:layout_toRightOf="@id/detail_thumbs_up_count_view"
-        android:lines="1"
-        android:textAppearance="?android:attr/textAppearanceSmall"
-        android:textSize="@dimen/video_item_search_upload_date_text_size"
-        tools:text="1 year ago" />
-
-</RelativeLayout>

app/src/main/res/values/strings.xml

@@ -838,4 +838,8 @@
     <string name="share_playlist_with_list">Share URL list</string>
     <string name="video_details_list_item">- %1$s: %2$s</string>
     <string name="share_playlist_content_details">%1$s\n%2$s</string>
+    <plurals name="replies">
+        <item quantity="one">%s reply</item>
+        <item quantity="other">%s replies</item>
+    </plurals>
 </resources>