Barebone swiping left or right to go to previous or next post in ViewPostDetailActivity.

13 files changed, 2002 insertions, 1649 deletions

diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/AppComponent.java b/app/src/main/java/ml/docilealligator/infinityforreddit/AppComponent.java
index 05aa69fd..9e7ac3aa 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/AppComponent.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/AppComponent.java
@@ -64,6 +64,7 @@ import ml.docilealligator.infinityforreddit.fragments.SubscribedSubredditsListin
 import ml.docilealligator.infinityforreddit.fragments.UserListingFragment;
 import ml.docilealligator.infinityforreddit.fragments.ViewImgurImageFragment;
 import ml.docilealligator.infinityforreddit.fragments.ViewImgurVideoFragment;
+import ml.docilealligator.infinityforreddit.fragments.ViewPostDetailFragment;
 import ml.docilealligator.infinityforreddit.fragments.ViewRedditGalleryImageOrGifFragment;
 import ml.docilealligator.infinityforreddit.fragments.ViewRedditGalleryVideoFragment;
 import ml.docilealligator.infinityforreddit.services.DownloadMediaService;
@@ -248,4 +249,6 @@ public interface AppComponent {
     void inject(ViewImgurImageFragment viewImgurImageFragment);
 
     void inject(ViewRedditGalleryImageOrGifFragment viewRedditGalleryImageOrGifFragment);
+
+    void inject(ViewPostDetailFragment viewPostDetailFragment);
 }
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/activities/EditCommentActivity.java b/app/src/main/java/ml/docilealligator/infinityforreddit/activities/EditCommentActivity.java
index 368d58cc..07c0c2af 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/activities/EditCommentActivity.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/activities/EditCommentActivity.java
@@ -52,8 +52,8 @@ public class EditCommentActivity extends BaseActivity {
     public static final String EXTRA_FULLNAME = "EF";
     public static final String EXTRA_POSITION = "EP";
 
-    static final String EXTRA_EDITED_COMMENT_CONTENT = "EECC";
-    static final String EXTRA_EDITED_COMMENT_POSITION = "EECP";
+    public static final String EXTRA_EDITED_COMMENT_CONTENT = "EECC";
+    public static final String EXTRA_EDITED_COMMENT_POSITION = "EECP";
 
     @BindView(R.id.coordinator_layout_edit_comment_activity)
     CoordinatorLayout coordinatorLayout;
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/activities/EditPostActivity.java b/app/src/main/java/ml/docilealligator/infinityforreddit/activities/EditPostActivity.java
index 0f40fcc7..5c8ea02f 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/activities/EditPostActivity.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/activities/EditPostActivity.java
@@ -50,9 +50,9 @@ import retrofit2.Retrofit;
 
 public class EditPostActivity extends BaseActivity {
 
-    static final String EXTRA_TITLE = "ET";
-    static final String EXTRA_CONTENT = "EC";
-    static final String EXTRA_FULLNAME = "EF";
+    public static final String EXTRA_TITLE = "ET";
+    public static final String EXTRA_CONTENT = "EC";
+    public static final String EXTRA_FULLNAME = "EF";
 
     @BindView(R.id.coordinator_layout_edit_post_activity)
     CoordinatorLayout coordinatorLayout;
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/activities/MainActivity.java b/app/src/main/java/ml/docilealligator/infinityforreddit/activities/MainActivity.java
index 5dfc00d3..83b8a2c9 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/activities/MainActivity.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/activities/MainActivity.java
@@ -968,11 +968,7 @@ public class MainActivity extends BaseActivity implements SortTypeSelectionCallb
     private void changeSortType() {
         int currentPostType = sectionsPagerAdapter.getCurrentPostType();
         Bundle bundle = new Bundle();
-        if (currentPostType != PostDataSource.TYPE_FRONT_PAGE) {
-            bundle.putBoolean(SortTypeBottomSheetFragment.EXTRA_NO_BEST_TYPE, true);
-        } else {
-            bundle.putBoolean(SortTypeBottomSheetFragment.EXTRA_NO_BEST_TYPE, false);
-        }
+        bundle.putBoolean(SortTypeBottomSheetFragment.EXTRA_NO_BEST_TYPE, currentPostType != PostDataSource.TYPE_FRONT_PAGE);
         SortTypeBottomSheetFragment sortTypeBottomSheetFragment = new SortTypeBottomSheetFragment();
         sortTypeBottomSheetFragment.setArguments(bundle);
         sortTypeBottomSheetFragment.show(getSupportFragmentManager(), sortTypeBottomSheetFragment.getTag());
@@ -980,43 +976,43 @@ public class MainActivity extends BaseActivity implements SortTypeSelectionCallb
 
     @Override
     public boolean onOptionsItemSelected(@NonNull MenuItem item) {
-        switch (item.getItemId()) {
-            case R.id.action_search_main_activity:
-                Intent intent = new Intent(this, SearchActivity.class);
-                startActivity(intent);
-                return true;
-            case R.id.action_sort_main_activity:
-                changeSortType();
-                return true;
-            case R.id.action_refresh_main_activity:
-                if (mMenu != null) {
-                    mMenu.findItem(R.id.action_lazy_mode_main_activity).setTitle(R.string.action_start_lazy_mode);
-                }
-                sectionsPagerAdapter.refresh();
-                mFetchUserInfoSuccess = false;
-                loadUserData();
-                return true;
-            case R.id.action_lazy_mode_main_activity:
-                MenuItem lazyModeItem = mMenu.findItem(R.id.action_lazy_mode_main_activity);
-                if (isInLazyMode) {
-                    sectionsPagerAdapter.stopLazyMode();
-                    isInLazyMode = false;
-                    lazyModeItem.setTitle(R.string.action_start_lazy_mode);
-                    params.setScrollFlags(AppBarLayout.LayoutParams.SCROLL_FLAG_SCROLL | AppBarLayout.LayoutParams.SCROLL_FLAG_ENTER_ALWAYS);
+        int itemId = item.getItemId();
+        if (itemId == R.id.action_search_main_activity) {
+            Intent intent = new Intent(this, SearchActivity.class);
+            startActivity(intent);
+            return true;
+        } else if (itemId == R.id.action_sort_main_activity) {
+            changeSortType();
+            return true;
+        } else if (itemId == R.id.action_refresh_main_activity) {
+            if (mMenu != null) {
+                mMenu.findItem(R.id.action_lazy_mode_main_activity).setTitle(R.string.action_start_lazy_mode);
+            }
+            sectionsPagerAdapter.refresh();
+            mFetchUserInfoSuccess = false;
+            loadUserData();
+            return true;
+        } else if (itemId == R.id.action_lazy_mode_main_activity) {
+            MenuItem lazyModeItem = mMenu.findItem(R.id.action_lazy_mode_main_activity);
+            if (isInLazyMode) {
+                sectionsPagerAdapter.stopLazyMode();
+                isInLazyMode = false;
+                lazyModeItem.setTitle(R.string.action_start_lazy_mode);
+                params.setScrollFlags(AppBarLayout.LayoutParams.SCROLL_FLAG_SCROLL | AppBarLayout.LayoutParams.SCROLL_FLAG_ENTER_ALWAYS);
+                collapsingToolbarLayout.setLayoutParams(params);
+            } else {
+                if (sectionsPagerAdapter.startLazyMode()) {
+                    isInLazyMode = true;
+                    lazyModeItem.setTitle(R.string.action_stop_lazy_mode);
+                    params.setScrollFlags(AppBarLayout.LayoutParams.SCROLL_FLAG_NO_SCROLL);
                     collapsingToolbarLayout.setLayoutParams(params);
-                } else {
-                    if (sectionsPagerAdapter.startLazyMode()) {
-                        isInLazyMode = true;
-                        lazyModeItem.setTitle(R.string.action_stop_lazy_mode);
-                        params.setScrollFlags(AppBarLayout.LayoutParams.SCROLL_FLAG_NO_SCROLL);
-                        collapsingToolbarLayout.setLayoutParams(params);
-                    }
                 }
-                return true;
-            case R.id.action_change_post_layout_main_activity:
-                PostLayoutBottomSheetFragment postLayoutBottomSheetFragment = new PostLayoutBottomSheetFragment();
-                postLayoutBottomSheetFragment.show(getSupportFragmentManager(), postLayoutBottomSheetFragment.getTag());
-                return true;
+            }
+            return true;
+        } else if (itemId == R.id.action_change_post_layout_main_activity) {
+            PostLayoutBottomSheetFragment postLayoutBottomSheetFragment = new PostLayoutBottomSheetFragment();
+            postLayoutBottomSheetFragment.show(getSupportFragmentManager(), postLayoutBottomSheetFragment.getTag());
+            return true;
         }
         return false;
     }
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/activities/ViewPostDetailActivity.java b/app/src/main/java/ml/docilealligator/infinityforreddit/activities/ViewPostDetailActivity.java
index a9e83270..b13a49a7 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/activities/ViewPostDetailActivity.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/activities/ViewPostDetailActivity.java
@@ -1,61 +1,41 @@
 package ml.docilealligator.infinityforreddit.activities;
 
+import android.app.Activity;
 import android.content.Intent;
 import android.content.SharedPreferences;
-import android.content.res.Resources;
-import android.graphics.Canvas;
-import android.graphics.drawable.ColorDrawable;
-import android.graphics.drawable.Drawable;
 import android.os.Build;
 import android.os.Bundle;
 import android.os.Handler;
-import android.util.DisplayMetrics;
-import android.view.HapticFeedbackConstants;
 import android.view.KeyEvent;
-import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
 import android.view.Window;
 import android.view.WindowManager;
-import android.widget.ImageView;
-import android.widget.LinearLayout;
-import android.widget.TextView;
 import android.widget.Toast;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.appcompat.widget.Toolbar;
 import androidx.coordinatorlayout.widget.CoordinatorLayout;
-import androidx.core.content.res.ResourcesCompat;
-import androidx.core.graphics.drawable.DrawableCompat;
-import androidx.recyclerview.widget.ItemTouchHelper;
-import androidx.recyclerview.widget.LinearLayoutManager;
-import androidx.recyclerview.widget.LinearSmoothScroller;
-import androidx.recyclerview.widget.RecyclerView;
-import androidx.swiperefreshlayout.widget.SwipeRefreshLayout;
-import androidx.transition.AutoTransition;
-import androidx.transition.TransitionManager;
-
-import com.bumptech.glide.Glide;
-import com.bumptech.glide.RequestManager;
+import androidx.fragment.app.Fragment;
+import androidx.fragment.app.FragmentActivity;
+import androidx.fragment.app.FragmentManager;
+import androidx.viewpager2.adapter.FragmentStateAdapter;
+import androidx.viewpager2.widget.ViewPager2;
+
 import com.evernote.android.state.State;
 import com.github.piasy.biv.BigImageViewer;
 import com.github.piasy.biv.loader.glide.GlideImageLoader;
 import com.google.android.material.appbar.AppBarLayout;
-import com.google.android.material.dialog.MaterialAlertDialogBuilder;
 import com.google.android.material.floatingactionbutton.FloatingActionButton;
 import com.google.android.material.snackbar.Snackbar;
 import com.livefront.bridge.Bridge;
-import com.r0adkll.slidr.Slidr;
 import com.r0adkll.slidr.model.SlidrInterface;
 
 import org.greenrobot.eventbus.EventBus;
 import org.greenrobot.eventbus.Subscribe;
 
 import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.Locale;
-import java.util.Map;
 import java.util.concurrent.Executor;
 
 import javax.inject.Inject;
@@ -63,181 +43,71 @@ import javax.inject.Named;
 
 import butterknife.BindView;
 import butterknife.ButterKnife;
-import im.ene.toro.exoplayer.ExoCreator;
-import im.ene.toro.media.PlaybackInfo;
-import im.ene.toro.media.VolumeInfo;
 import ml.docilealligator.infinityforreddit.ActivityToolbarInterface;
-import ml.docilealligator.infinityforreddit.DeleteThing;
 import ml.docilealligator.infinityforreddit.Flair;
 import ml.docilealligator.infinityforreddit.Infinity;
 import ml.docilealligator.infinityforreddit.R;
 import ml.docilealligator.infinityforreddit.RedditDataRoomDatabase;
-import ml.docilealligator.infinityforreddit.SaveThing;
 import ml.docilealligator.infinityforreddit.SortType;
 import ml.docilealligator.infinityforreddit.SortTypeSelectionCallback;
-import ml.docilealligator.infinityforreddit.adapters.CommentAndPostRecyclerViewAdapter;
-import ml.docilealligator.infinityforreddit.apis.RedditAPI;
 import ml.docilealligator.infinityforreddit.asynctasks.SwitchAccount;
 import ml.docilealligator.infinityforreddit.bottomsheetfragments.FlairBottomSheetFragment;
-import ml.docilealligator.infinityforreddit.bottomsheetfragments.PostCommentSortTypeBottomSheetFragment;
 import ml.docilealligator.infinityforreddit.comment.Comment;
-import ml.docilealligator.infinityforreddit.comment.FetchComment;
-import ml.docilealligator.infinityforreddit.comment.FetchRemovedComment;
-import ml.docilealligator.infinityforreddit.comment.ParseComment;
 import ml.docilealligator.infinityforreddit.customtheme.CustomThemeWrapper;
-import ml.docilealligator.infinityforreddit.customviews.CustomToroContainer;
-import ml.docilealligator.infinityforreddit.events.ChangeNSFWBlurEvent;
-import ml.docilealligator.infinityforreddit.events.ChangeNetworkStatusEvent;
-import ml.docilealligator.infinityforreddit.events.ChangeSpoilerBlurEvent;
-import ml.docilealligator.infinityforreddit.events.PostUpdateEventToDetailActivity;
-import ml.docilealligator.infinityforreddit.events.PostUpdateEventToPostList;
 import ml.docilealligator.infinityforreddit.events.SwitchAccountEvent;
-import ml.docilealligator.infinityforreddit.message.ReadMessage;
-import ml.docilealligator.infinityforreddit.post.FetchPost;
-import ml.docilealligator.infinityforreddit.post.FetchRemovedPost;
-import ml.docilealligator.infinityforreddit.post.HidePost;
-import ml.docilealligator.infinityforreddit.post.ParsePost;
+import ml.docilealligator.infinityforreddit.fragments.PostFragment;
+import ml.docilealligator.infinityforreddit.fragments.ViewPostDetailFragment;
 import ml.docilealligator.infinityforreddit.post.Post;
-import ml.docilealligator.infinityforreddit.subreddit.FetchSubredditData;
-import ml.docilealligator.infinityforreddit.subreddit.SubredditData;
-import ml.docilealligator.infinityforreddit.utils.APIUtils;
 import ml.docilealligator.infinityforreddit.utils.SharedPreferencesUtils;
-import ml.docilealligator.infinityforreddit.utils.Utils;
-import retrofit2.Call;
-import retrofit2.Callback;
-import retrofit2.Response;
-import retrofit2.Retrofit;
-
-import static im.ene.toro.media.PlaybackInfo.INDEX_UNSET;
-import static im.ene.toro.media.PlaybackInfo.TIME_UNSET;
-import static ml.docilealligator.infinityforreddit.activities.CommentActivity.RETURN_EXTRA_COMMENT_DATA_KEY;
-import static ml.docilealligator.infinityforreddit.activities.CommentActivity.WRITE_COMMENT_REQUEST_CODE;
 
 public class ViewPostDetailActivity extends BaseActivity implements FlairBottomSheetFragment.FlairSelectionCallback,
         SortTypeSelectionCallback, ActivityToolbarInterface {
 
+    public static final String EXTRA_POST_LIST = "EPL";
     public static final String EXTRA_POST_DATA = "EPD";
-    public static final String EXTRA_POST_LIST_POSITION = "EPLI";
     public static final String EXTRA_POST_ID = "EPI";
+    public static final String EXTRA_POST_LIST_POSITION = "EPLP";
     public static final String EXTRA_SINGLE_COMMENT_ID = "ESCI";
     public static final String EXTRA_MESSAGE_FULLNAME = "ENI";
     public static final String EXTRA_NEW_ACCOUNT_NAME = "ENAN";
     public static final int EDIT_COMMENT_REQUEST_CODE = 3;
     public static final int GIVE_AWARD_REQUEST_CODE = 100;
-    private static final int EDIT_POST_REQUEST_CODE = 2;
-    String mAccessToken;
     @State
     String mAccountName;
     @State
-    Post mPost;
-    @State
-    boolean isLoadingMoreChildren = false;
-    @State
-    boolean isRefreshing = false;
-    @State
-    boolean isSingleCommentThreadMode = false;
-    @State
-    ArrayList<Comment> comments;
-    @State
-    ArrayList<String> children;
-    @State
-    int mChildrenStartingIndex = 0;
-    @State
-    boolean loadMoreChildrenSuccess = true;
-    @State
-    boolean hasMoreChildren;
-    @State
-    boolean isFetchingComments = false;
-    @State
-    String mMessageFullname;
-    @State
     String mNewAccountName;
-    @State
-    String sortType;
-    @State
-    boolean mRespectSubredditRecommendedSortType;
     @BindView(R.id.coordinator_layout_view_post_detail)
     CoordinatorLayout mCoordinatorLayout;
     @BindView(R.id.appbar_layout_view_post_detail_activity)
     AppBarLayout mAppBarLayout;
     @BindView(R.id.toolbar_view_post_detail_activity)
     Toolbar mToolbar;
-    @BindView(R.id.swipe_refresh_layout_view_post_detail_activity)
-    SwipeRefreshLayout mSwipeRefreshLayout;
-    @BindView(R.id.recycler_view_view_post_detail)
-    CustomToroContainer mRecyclerView;
-    @BindView(R.id.fetch_post_info_linear_layout_view_post_detail_activity)
-    LinearLayout mFetchPostInfoLinearLayout;
-    @BindView(R.id.fetch_post_info_image_view_view_post_detail_activity)
-    ImageView mFetchPostInfoImageView;
-    @BindView(R.id.fetch_post_info_text_view_view_post_detail_activity)
-    TextView mFetchPostInfoTextView;
+    @BindView(R.id.view_pager_2_view_post_detail_activity)
+    ViewPager2 viewPager2;
     @BindView(R.id.fab_view_post_detail_activity)
     FloatingActionButton fab;
     @Inject
-    @Named("no_oauth")
-    Retrofit mRetrofit;
-    @Inject
-    @Named("pushshift")
-    Retrofit pushshiftRetrofit;
-    @Inject
-    @Named("oauth")
-    Retrofit mOauthRetrofit;
-    @Inject
-    @Named("gfycat")
-    Retrofit mGfycatRetrofit;
-    @Inject
-    @Named("redgifs")
-    Retrofit mRedgifsRetrofit;
-    @Inject
     RedditDataRoomDatabase mRedditDataRoomDatabase;
     @Inject
     @Named("default")
     SharedPreferences mSharedPreferences;
     @Inject
-    @Named("sort_type")
-    SharedPreferences mSortTypeSharedPreferences;
-    @Inject
-    @Named("nsfw_and_spoiler")
-    SharedPreferences mNsfwAndSpoilerSharedPreferences;
-    @Inject
     @Named("current_account")
     SharedPreferences mCurrentAccountSharedPreferences;
     @Inject
     CustomThemeWrapper mCustomThemeWrapper;
     @Inject
-    ExoCreator mExoCreator;
-    @Inject
     Executor mExecutor;
-    private RequestManager mGlide;
-    private Locale mLocale;
-    private Menu mMenu;
+    @State
+    ArrayList<Post> posts;
+    @State
+    Post post;
+    private FragmentManager fragmentManager;
+    private SlidrInterface mSlidrInterface;
+    private SectionsPagerAdapter sectionsPagerAdapter;
     private int orientation;
-    private int postListPosition = -1;
-    private String mSingleCommentId;
-    private boolean showToast = false;
-    private boolean isSortingComments = false;
     private boolean mVolumeKeysNavigateComments;
-    private boolean mIsSmoothScrolling = false;
-    private boolean mLockFab;
-    private boolean mSwipeUpToHideFab;
-    private boolean mExpandChildren;
-    private int mWindowWidth;
-    private LinearLayoutManager mLinearLayoutManager;
-    private CommentAndPostRecyclerViewAdapter mAdapter;
-    private RecyclerView.SmoothScroller mSmoothScroller;
-    private PostCommentSortTypeBottomSheetFragment mPostCommentSortTypeBottomSheetFragment;
-    private SlidrInterface mSlidrInterface;
-    private Drawable mSavedIcon;
-    private Drawable mUnsavedIcon;
-    private ColorDrawable backgroundSwipeRight;
-    private ColorDrawable backgroundSwipeLeft;
-    private Drawable drawableSwipeRight;
-    private Drawable drawableSwipeLeft;
-    private int swipeLeftAction;
-    private int swipeRightAction;
-    private float swipeActionThreshold;
-    private ItemTouchHelper touchHelper;
+
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
@@ -257,12 +127,9 @@ public class ViewPostDetailActivity extends BaseActivity implements FlairBottomS
 
         applyCustomTheme();
 
-        mSavedIcon = getMenuItemIcon(R.drawable.ic_bookmark_toolbar_24dp);
-        mUnsavedIcon = getMenuItemIcon(R.drawable.ic_bookmark_border_toolbar_24dp);
-
-        if (mSharedPreferences.getBoolean(SharedPreferencesUtils.SWIPE_RIGHT_TO_GO_BACK, true)) {
+        /*if (mSharedPreferences.getBoolean(SharedPreferencesUtils.SWIPE_RIGHT_TO_GO_BACK, true)) {
             mSlidrInterface = Slidr.attach(this);
-        }
+        }*/
 
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
             Window window = getWindow();
@@ -286,288 +153,59 @@ public class ViewPostDetailActivity extends BaseActivity implements FlairBottomS
                     CoordinatorLayout.LayoutParams params = (CoordinatorLayout.LayoutParams) fab.getLayoutParams();
                     params.bottomMargin += navBarHeight;
                     fab.setLayoutParams(params);
-                    mRecyclerView.setPadding(0, 0, 0, navBarHeight + mRecyclerView.getPaddingBottom());
-                    showToast = true;
                 }
             }
         }
 
-        DisplayMetrics displayMetrics = new DisplayMetrics();
-        getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);
-        mWindowWidth = displayMetrics.widthPixels;
+        fragmentManager = getSupportFragmentManager();
 
-        mToolbar.setTitle("");
-        setSupportActionBar(mToolbar);
-        setToolbarGoToTop(mToolbar);
-
-        mVolumeKeysNavigateComments = mSharedPreferences.getBoolean(SharedPreferencesUtils.VOLUME_KEYS_NAVIGATE_COMMENTS, false);
-        mLockFab = mSharedPreferences.getBoolean(SharedPreferencesUtils.LOCK_JUMP_TO_NEXT_TOP_LEVEL_COMMENT_BUTTON, false);
-        mSwipeUpToHideFab = mSharedPreferences.getBoolean(SharedPreferencesUtils.SWIPE_UP_TO_HIDE_JUMP_TO_NEXT_TOP_LEVEL_COMMENT_BUTTON, false);
-        mExpandChildren = !mSharedPreferences.getBoolean(SharedPreferencesUtils.SHOW_TOP_LEVEL_COMMENTS_FIRST, false);
         if (savedInstanceState == null) {
-            mRespectSubredditRecommendedSortType = mSharedPreferences.getBoolean(SharedPreferencesUtils.RESPECT_SUBREDDIT_RECOMMENDED_COMMENT_SORT_TYPE, false);
+            posts = getIntent().getParcelableArrayListExtra(EXTRA_POST_LIST);
+            post = getIntent().getParcelableExtra(EXTRA_POST_DATA);
         }
 
-        mGlide = Glide.with(this);
-        Resources resources = getResources();
-        mLocale = getResources().getConfiguration().locale;
-
-        mLinearLayoutManager = new LinearLayoutManager(this);
-        mRecyclerView.setLayoutManager(mLinearLayoutManager);
-
-        if (children != null && children.size() > 0) {
-            mRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
-                @Override
-                public void onScrolled(@NonNull RecyclerView recyclerView, int dx, int dy) {
-                    super.onScrolled(recyclerView, dx, dy);
-                    if (!mIsSmoothScrolling && !mLockFab) {
-                        if (!recyclerView.canScrollVertically(1)) {
-                            fab.hide();
-                        } else {
-                            if (dy > 0) {
-                                if (mSwipeUpToHideFab) {
-                                    fab.show();
-                                } else {
-                                    fab.hide();
-                                }
-                            } else {
-                                if (mSwipeUpToHideFab) {
-                                    fab.hide();
-                                } else {
-                                    fab.show();
-                                }
-                            }
-                        }
-                    }
-
-                    if (!isLoadingMoreChildren && loadMoreChildrenSuccess) {
-                        int visibleItemCount = mLinearLayoutManager.getChildCount();
-                        int totalItemCount = mLinearLayoutManager.getItemCount();
-                        int firstVisibleItemPosition = mLinearLayoutManager.findFirstVisibleItemPosition();
-
-                        if ((visibleItemCount + firstVisibleItemPosition >= totalItemCount) && firstVisibleItemPosition >= 0) {
-                            fetchMoreComments();
-                        }
-                    }
-                }
+        orientation = getResources().getConfiguration().orientation;
 
-                @Override
-                public void onScrollStateChanged(@NonNull RecyclerView recyclerView, int newState) {
-                    if (newState == RecyclerView.SCROLL_STATE_IDLE) {
-                        mIsSmoothScrolling = false;
-                    }
-                }
-            });
-        } else {
-            mRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
-                @Override
-                public void onScrolled(@NonNull RecyclerView recyclerView, int dx, int dy) {
-                    super.onScrolled(recyclerView, dx, dy);
-                    if (!mIsSmoothScrolling && !mLockFab) {
-                        if (!recyclerView.canScrollVertically(1)) {
-                            fab.hide();
-                        } else {
-                            if (dy > 0) {
-                                if (mSwipeUpToHideFab) {
-                                    fab.show();
-                                } else {
-                                    fab.hide();
-                                }
-                            } else {
-                                if (mSwipeUpToHideFab) {
-                                    fab.hide();
-                                } else {
-                                    fab.show();
-                                }
-                            }
-                        }
-                    }
-                }
+        mToolbar.setTitle("");
+        setSupportActionBar(mToolbar);
+        setToolbarGoToTop(mToolbar);
 
-                @Override
-                public void onScrollStateChanged(@NonNull RecyclerView recyclerView, int newState) {
-                    if (newState == RecyclerView.SCROLL_STATE_IDLE) {
-                        mIsSmoothScrolling = false;
-                    }
-                }
-            });
+        if (savedInstanceState == null) {
+            mNewAccountName = getIntent().getStringExtra(EXTRA_NEW_ACCOUNT_NAME);
         }
 
-        boolean enableSwipeAction = mSharedPreferences.getBoolean(SharedPreferencesUtils.ENABLE_SWIPE_ACTION, false);
-        boolean vibrateWhenActionTriggered = mSharedPreferences.getBoolean(SharedPreferencesUtils.VIBRATE_WHEN_ACTION_TRIGGERED, true);
-        swipeActionThreshold = Float.parseFloat(mSharedPreferences.getString(SharedPreferencesUtils.SWIPE_ACTION_THRESHOLD, "0.3"));
-        swipeRightAction = Integer.parseInt(mSharedPreferences.getString(SharedPreferencesUtils.SWIPE_RIGHT_ACTION, "1"));
-        swipeLeftAction = Integer.parseInt(mSharedPreferences.getString(SharedPreferencesUtils.SWIPE_LEFT_ACTION, "0"));
-        initializeSwipeActionDrawable();
-        touchHelper = new ItemTouchHelper(new ItemTouchHelper.Callback() {
-            boolean exceedThreshold = false;
-
-            @Override
-            public int getMovementFlags(@NonNull RecyclerView recyclerView, @NonNull RecyclerView.ViewHolder viewHolder) {
-                if (!(viewHolder instanceof CommentAndPostRecyclerViewAdapter.CommentViewHolder)) {
-                    return makeMovementFlags(0, 0);
-                }
-                int swipeFlags = ItemTouchHelper.START | ItemTouchHelper.END;
-                return makeMovementFlags(0, swipeFlags);
-            }
-
-            @Override
-            public boolean onMove(@NonNull RecyclerView recyclerView, @NonNull RecyclerView.ViewHolder viewHolder, @NonNull RecyclerView.ViewHolder target) {
-                return false;
-            }
-
-            @Override
-            public boolean isItemViewSwipeEnabled() {
-                return true;
-            }
+        mAccountName = mCurrentAccountSharedPreferences.getString(SharedPreferencesUtils.ACCOUNT_NAME, null);
 
-            @Override
-            public void onSwiped(@NonNull RecyclerView.ViewHolder viewHolder, int direction) {
-                if (touchHelper != null) {
-                    touchHelper.attachToRecyclerView(null);
-                    touchHelper.attachToRecyclerView(mRecyclerView);
-                    if (mAdapter != null) {
-                        mAdapter.onItemSwipe(viewHolder, direction, swipeLeftAction, swipeRightAction);
-                    }
-                }
-            }
+        mVolumeKeysNavigateComments = mSharedPreferences.getBoolean(SharedPreferencesUtils.VOLUME_KEYS_NAVIGATE_COMMENTS, false);
 
-            @Override
-            public void onChildDraw(@NonNull Canvas c, @NonNull RecyclerView recyclerView, @NonNull RecyclerView.ViewHolder viewHolder, float dX, float dY, int actionState, boolean isCurrentlyActive) {
-                super.onChildDraw(c, recyclerView, viewHolder, dX, dY, actionState, isCurrentlyActive);
-
-                View itemView = viewHolder.itemView;
-                int horizontalOffset = (int) Utils.convertDpToPixel(16, ViewPostDetailActivity.this);
-                if (dX > 0) {
-                    if (dX > (itemView.getRight() - itemView.getLeft()) * swipeActionThreshold) {
-                        if (!exceedThreshold) {
-                            exceedThreshold = true;
-                            if (vibrateWhenActionTriggered) {
-                                viewHolder.itemView.setHapticFeedbackEnabled(true);
-                                viewHolder.itemView.performHapticFeedback(HapticFeedbackConstants.VIRTUAL_KEY, HapticFeedbackConstants.FLAG_IGNORE_GLOBAL_SETTING);
-                            }
-                        }
-                        backgroundSwipeRight.setBounds(0, itemView.getTop(), itemView.getRight(), itemView.getBottom());
-                    } else {
-                        exceedThreshold = false;
-                        backgroundSwipeRight.setBounds(0, 0, 0, 0);
-                    }
-
-                    drawableSwipeRight.setBounds(itemView.getLeft() + ((int) dX) - horizontalOffset - drawableSwipeRight.getIntrinsicWidth(),
-                            (itemView.getBottom() + itemView.getTop() - drawableSwipeRight.getIntrinsicHeight()) / 2,
-                            itemView.getLeft() + ((int) dX) - horizontalOffset,
-                            (itemView.getBottom() + itemView.getTop() + drawableSwipeRight.getIntrinsicHeight()) / 2);
-                    backgroundSwipeRight.draw(c);
-                    drawableSwipeRight.draw(c);
-                } else if (dX < 0) {
-                    if (-dX > (itemView.getRight() - itemView.getLeft()) * swipeActionThreshold) {
-                        if (!exceedThreshold) {
-                            exceedThreshold = true;
-                            if (vibrateWhenActionTriggered) {
-                                viewHolder.itemView.setHapticFeedbackEnabled(true);
-                                viewHolder.itemView.performHapticFeedback(HapticFeedbackConstants.VIRTUAL_KEY, HapticFeedbackConstants.FLAG_IGNORE_GLOBAL_SETTING);
-                            }
-                        }
-                        backgroundSwipeLeft.setBounds(0, itemView.getTop(), itemView.getRight(), itemView.getBottom());
-                    } else {
-                        exceedThreshold = false;
-                        backgroundSwipeLeft.setBounds(0, 0, 0, 0);
-                    }
-                    drawableSwipeLeft.setBounds(itemView.getRight() + ((int) dX) + horizontalOffset,
-                            (itemView.getBottom() + itemView.getTop() - drawableSwipeLeft.getIntrinsicHeight()) / 2,
-                            itemView.getRight() + ((int) dX) + horizontalOffset + drawableSwipeLeft.getIntrinsicWidth(),
-                            (itemView.getBottom() + itemView.getTop() + drawableSwipeLeft.getIntrinsicHeight()) / 2);
-                    backgroundSwipeLeft.draw(c);
-                    drawableSwipeLeft.draw(c);
+        fab.setOnClickListener(view -> {
+            if (sectionsPagerAdapter != null) {
+                ViewPostDetailFragment fragment = sectionsPagerAdapter.getCurrentFragment();
+                if (fragment != null) {
+                    fragment.scrollToNextParentComment();
                 }
             }
-
-            @Override
-            public float getSwipeThreshold(@NonNull RecyclerView.ViewHolder viewHolder) {
-                return swipeActionThreshold;
-            }
         });
 
-        if (enableSwipeAction) {
-            touchHelper.attachToRecyclerView(mRecyclerView);
-        }
-
-        mSwipeRefreshLayout.setOnRefreshListener(() -> refresh(true, true));
-
-        mSmoothScroller = new LinearSmoothScroller(this) {
-            @Override
-            protected int getVerticalSnapPreference() {
-                return LinearSmoothScroller.SNAP_TO_START;
-            }
-        };
-
-        mSingleCommentId = getIntent().getStringExtra(EXTRA_SINGLE_COMMENT_ID);
-        if (savedInstanceState == null) {
-            if (mSingleCommentId != null) {
-                isSingleCommentThreadMode = true;
-            }
-            mMessageFullname = getIntent().getStringExtra(EXTRA_MESSAGE_FULLNAME);
-            mNewAccountName = getIntent().getStringExtra(EXTRA_NEW_ACCOUNT_NAME);
-
-            if (!mRespectSubredditRecommendedSortType || isSingleCommentThreadMode) {
-                sortType = mSortTypeSharedPreferences.getString(SharedPreferencesUtils.SORT_TYPE_POST_COMMENT, SortType.Type.BEST.value.toUpperCase());
-                if (sortType != null) {
-                    mToolbar.setTitle(new SortType(SortType.Type.valueOf(sortType)).getType().fullName);
-                    sortType = sortType.toLowerCase();
-                }
-            }
-        } else {
-            if (sortType != null) {
-                mToolbar.setTitle(new SortType(SortType.Type.valueOf(sortType.toUpperCase())).getType().fullName);
-            }
-        }
-
-        orientation = resources.getConfiguration().orientation;
-
-        mAccessToken = mCurrentAccountSharedPreferences.getString(SharedPreferencesUtils.ACCESS_TOKEN, null);
-        mAccountName = mCurrentAccountSharedPreferences.getString(SharedPreferencesUtils.ACCOUNT_NAME, null);
-
         checkNewAccountAndBindView();
-
-        if (getIntent().hasExtra(EXTRA_POST_LIST_POSITION)) {
-            postListPosition = getIntent().getIntExtra(EXTRA_POST_LIST_POSITION, -1);
-        }
-
-        mPostCommentSortTypeBottomSheetFragment = new PostCommentSortTypeBottomSheetFragment();
     }
 
-    private void initializeSwipeActionDrawable() {
-        if (swipeRightAction == SharedPreferencesUtils.SWIPE_ACITON_DOWNVOTE) {
-            backgroundSwipeRight = new ColorDrawable(mCustomThemeWrapper.getDownvoted());
-            drawableSwipeRight = ResourcesCompat.getDrawable(getResources(), R.drawable.ic_arrow_downward_black_24dp, null);
-        } else {
-            backgroundSwipeRight = new ColorDrawable(mCustomThemeWrapper.getUpvoted());
-            drawableSwipeRight = ResourcesCompat.getDrawable(getResources(), R.drawable.ic_arrow_upward_black_24dp, null);
+    public void setTitle(String title) {
+        if (mToolbar != null) {
+            mToolbar.setTitle(title);
         }
+    }
 
-        if (swipeLeftAction == SharedPreferencesUtils.SWIPE_ACITON_UPVOTE) {
-            backgroundSwipeLeft = new ColorDrawable(mCustomThemeWrapper.getUpvoted());
-            drawableSwipeLeft = ResourcesCompat.getDrawable(getResources(), R.drawable.ic_arrow_upward_black_24dp, null);
-        } else {
-            backgroundSwipeLeft = new ColorDrawable(mCustomThemeWrapper.getDownvoted());
-            drawableSwipeLeft = ResourcesCompat.getDrawable(getResources(), R.drawable.ic_arrow_downward_black_24dp, null);
-        }
+    public void showFab() {
+        fab.show();
     }
 
-    @Override
-    protected void onResume() {
-        super.onResume();
-        if (mAdapter != null && mRecyclerView != null) {
-            mRecyclerView.onWindowVisibilityChanged(View.VISIBLE);
-        }
+    public void hideFab() {
+        fab.hide();
     }
 
-    @Override
-    protected void onPause() {
-        super.onPause();
-        if (mAdapter != null && mRecyclerView != null) {
-            mRecyclerView.onWindowVisibilityChanged(View.GONE);
-        }
+    public void showSnackBar(int resId) {
+        Snackbar.make(mCoordinatorLayout, resId, Snackbar.LENGTH_SHORT).show();
     }
 
     @Override
@@ -584,9 +222,6 @@ public class ViewPostDetailActivity extends BaseActivity implements FlairBottomS
     protected void applyCustomTheme() {
         mCoordinatorLayout.setBackgroundColor(mCustomThemeWrapper.getBackgroundColor());
         applyAppBarLayoutAndToolbarTheme(mAppBarLayout, mToolbar);
-        mSwipeRefreshLayout.setProgressBackgroundColorSchemeColor(mCustomThemeWrapper.getCircularProgressBarBackground());
-        mSwipeRefreshLayout.setColorSchemeColors(mCustomThemeWrapper.getColorAccent());
-        mFetchPostInfoTextView.setTextColor(mCustomThemeWrapper.getSecondaryTextColor());
         applyFABTheme(fab);
     }
 
@@ -599,10 +234,6 @@ public class ViewPostDetailActivity extends BaseActivity implements FlairBottomS
                             Toast.makeText(this, R.string.account_switched, Toast.LENGTH_SHORT).show();
 
                             mNewAccountName = null;
-                            if (newAccount != null) {
-                                mAccessToken = newAccount.getAccessToken();
-                                mAccountName = newAccount.getAccountName();
-                            }
 
                             bindView();
                         });
@@ -615,807 +246,43 @@ public class ViewPostDetailActivity extends BaseActivity implements FlairBottomS
     }
 
     private void bindView() {
-        if (mAccessToken != null && mMessageFullname != null) {
-            ReadMessage.readMessage(mOauthRetrofit, mAccessToken, mMessageFullname, new ReadMessage.ReadMessageListener() {
-                @Override
-                public void readSuccess() {
-                    mMessageFullname = null;
-                }
-
-                @Override
-                public void readFailed() {
-
-                }
-            });
-        }
-
-        if (mPost == null) {
-            mPost = getIntent().getParcelableExtra(EXTRA_POST_DATA);
-        }
-
-        if (mPost == null) {
-            fetchPostAndCommentsById(getIntent().getStringExtra(EXTRA_POST_ID));
-        } else {
-            setupMenu();
-
-            mAdapter = new CommentAndPostRecyclerViewAdapter(ViewPostDetailActivity.this,
-                    mExecutor, mCustomThemeWrapper, mRetrofit, mOauthRetrofit, mGfycatRetrofit,
-                    mRedgifsRetrofit, mRedditDataRoomDatabase, mGlide,
-                    mWindowWidth, mAccessToken, mAccountName, mPost, mLocale, mSingleCommentId,
-                    isSingleCommentThreadMode, mSharedPreferences, mNsfwAndSpoilerSharedPreferences, mExoCreator,
-                    new CommentAndPostRecyclerViewAdapter.CommentRecyclerViewAdapterCallback() {
-                        @Override
-                        public void updatePost(Post post) {
-                            EventBus.getDefault().post(new PostUpdateEventToPostList(mPost, postListPosition));
-                        }
-
-                        @Override
-                        public void retryFetchingComments() {
-                            fetchCommentsRespectRecommendedSort(false);
-                        }
-
-                        @Override
-                        public void retryFetchingMoreComments() {
-                            isLoadingMoreChildren = false;
-                            loadMoreChildrenSuccess = true;
-
-                            fetchMoreComments();
-                        }
-                    });
-            mRecyclerView.setAdapter(mAdapter);
-
-            if (comments == null) {
-                fetchCommentsRespectRecommendedSort(false);
-            } else {
-                if (isRefreshing) {
-                    isRefreshing = false;
-                    refresh(true, true);
-                } else if (isFetchingComments) {
-                    fetchCommentsRespectRecommendedSort(false);
-                } else {
-                    mAdapter.addComments(comments, hasMoreChildren);
-                    if (isLoadingMoreChildren) {
-                        isLoadingMoreChildren = false;
-                        fetchMoreComments();
-                    }
-                }
-            }
-        }
-
-        mRecyclerView.setCacheManager(mAdapter);
-        mRecyclerView.setPlayerInitializer(order -> {
-            VolumeInfo volumeInfo = new VolumeInfo(true, 0f);
-            return new PlaybackInfo(INDEX_UNSET, TIME_UNSET, volumeInfo);
-        });
-
-        fab.setOnClickListener(view -> scrollToNextParentComment());
-    }
-
-    private void setupMenu() {
-        if (mMenu != null) {
-            MenuItem saveItem = mMenu.findItem(R.id.action_save_view_post_detail_activity);
-            MenuItem hideItem = mMenu.findItem(R.id.action_hide_view_post_detail_activity);
-
-            mMenu.findItem(R.id.action_comment_view_post_detail_activity).setVisible(true);
-            mMenu.findItem(R.id.action_sort_view_post_detail_activity).setVisible(true);
-
-            if (mAccessToken != null) {
-                if (mPost.isSaved()) {
-                    saveItem.setVisible(true);
-                    saveItem.setIcon(mSavedIcon);
-                } else {
-                    saveItem.setVisible(true);
-                    saveItem.setIcon(mUnsavedIcon);
-                }
-
-                if (mPost.isHidden()) {
-                    hideItem.setVisible(true);
-                    hideItem.setTitle(R.string.action_unhide_post);
-                } else {
-                    hideItem.setVisible(true);
-                    hideItem.setTitle(R.string.action_hide_post);
-                }
-            } else {
-                saveItem.setVisible(false);
-                hideItem.setVisible(false);
-            }
-
-            if (mPost.getAuthor().equals(mAccountName)) {
-                if (mPost.getPostType() == Post.TEXT_TYPE) {
-                    mMenu.findItem(R.id.action_edit_view_post_detail_activity).setVisible(true);
-                }
-                mMenu.findItem(R.id.action_delete_view_post_detail_activity).setVisible(true);
-
-                MenuItem nsfwItem = mMenu.findItem(R.id.action_nsfw_view_post_detail_activity);
-                nsfwItem.setVisible(true);
-                if (mPost.isNSFW()) {
-                    nsfwItem.setTitle(R.string.action_unmark_nsfw);
-                } else {
-                    nsfwItem.setTitle(R.string.action_mark_nsfw);
-                }
-
-                MenuItem spoilerItem = mMenu.findItem(R.id.action_spoiler_view_post_detail_activity);
-                spoilerItem.setVisible(true);
-                if (mPost.isSpoiler()) {
-                    spoilerItem.setTitle(R.string.action_unmark_spoiler);
-                } else {
-                    spoilerItem.setTitle(R.string.action_mark_spoiler);
-                }
-
-                mMenu.findItem(R.id.action_edit_flair_view_post_detail_activity).setVisible(true);
-            }
-
-            mMenu.findItem(R.id.action_view_crosspost_parent_view_post_detail_activity).setVisible(mPost.getCrosspostParentId() != null);
-
-            if ("[deleted]".equals(mPost.getAuthor()) ||
-                    "[deleted]".equals(mPost.getSelfText()) ||
-                    "[removed]".equals(mPost.getSelfText())
-            ) {
-                mMenu.findItem(R.id.action_see_removed_view_post_detail_activity).setVisible(true);
-            }
-        }
+        sectionsPagerAdapter = new SectionsPagerAdapter(this);
+        viewPager2.setAdapter(sectionsPagerAdapter);
     }
 
-    private Drawable getMenuItemIcon(int drawableId) {
-        Drawable icon = getDrawable(drawableId);
-        if (icon != null) {
-            DrawableCompat.setTint(icon, mCustomThemeWrapper.getToolbarPrimaryTextAndIconColor());
-        }
-
-        return icon;
-    }
-
-    private void fetchPostAndCommentsById(String subredditId) {
-        mFetchPostInfoLinearLayout.setVisibility(View.GONE);
-        mSwipeRefreshLayout.setRefreshing(true);
-        mGlide.clear(mFetchPostInfoImageView);
-
-        Call<String> postAndComments;
-        if (mAccessToken == null) {
-            if (isSingleCommentThreadMode && mSingleCommentId != null) {
-                postAndComments = mRetrofit.create(RedditAPI.class).getPostAndCommentsSingleThreadById(
-                        subredditId, mSingleCommentId, sortType);
-            } else {
-                postAndComments = mRetrofit.create(RedditAPI.class).getPostAndCommentsById(subredditId,
-                        sortType);
-            }
-        } else {
-            if (isSingleCommentThreadMode && mSingleCommentId != null) {
-                postAndComments = mOauthRetrofit.create(RedditAPI.class).getPostAndCommentsSingleThreadByIdOauth(subredditId,
-                        mSingleCommentId, sortType, APIUtils.getOAuthHeader(mAccessToken));
-            } else {
-                postAndComments = mOauthRetrofit.create(RedditAPI.class).getPostAndCommentsByIdOauth(subredditId,
-                        sortType, APIUtils.getOAuthHeader(mAccessToken));
-            }
-        }
-        postAndComments.enqueue(new Callback<String>() {
-            @Override
-            public void onResponse(@NonNull Call<String> call, @NonNull Response<String> response) {
-                mSwipeRefreshLayout.setRefreshing(false);
-
-                if (response.isSuccessful()) {
-                    ParsePost.parsePost(response.body(), new ParsePost.ParsePostListener() {
-                        @Override
-                        public void onParsePostSuccess(Post post) {
-                            mPost = post;
-
-                            setupMenu();
-
-                            mAdapter = new CommentAndPostRecyclerViewAdapter(ViewPostDetailActivity.this,
-                                    mExecutor, mCustomThemeWrapper, mRetrofit, mOauthRetrofit, mGfycatRetrofit,
-                                    mRedgifsRetrofit, mRedditDataRoomDatabase, mGlide,
-                                    mWindowWidth, mAccessToken, mAccountName, mPost, mLocale,
-                                    mSingleCommentId, isSingleCommentThreadMode, mSharedPreferences,
-                                    mNsfwAndSpoilerSharedPreferences, mExoCreator,
-                                    new CommentAndPostRecyclerViewAdapter.CommentRecyclerViewAdapterCallback() {
-                                        @Override
-                                        public void updatePost(Post post) {
-                                            EventBus.getDefault().post(new PostUpdateEventToPostList(mPost, postListPosition));
-                                        }
-
-                                        @Override
-                                        public void retryFetchingComments() {
-                                            fetchCommentsRespectRecommendedSort(false);
-                                        }
-
-                                        @Override
-                                        public void retryFetchingMoreComments() {
-                                            isLoadingMoreChildren = false;
-                                            loadMoreChildrenSuccess = true;
-
-                                            fetchMoreComments();
-                                        }
-                                    });
-                            mRecyclerView.setAdapter(mAdapter);
-
-                            if (mRespectSubredditRecommendedSortType) {
-                                fetchCommentsRespectRecommendedSort(false);
-                            } else {
-                                ParseComment.parseComment(response.body(), new ArrayList<>(), mLocale,
-                                        mExpandChildren, new ParseComment.ParseCommentListener() {
-                                            @Override
-                                            public void onParseCommentSuccess(ArrayList<Comment> expandedComments, String parentId, ArrayList<String> moreChildrenFullnames) {
-                                                ViewPostDetailActivity.this.children = moreChildrenFullnames;
-
-                                                hasMoreChildren = children.size() != 0;
-                                                mAdapter.addComments(expandedComments, hasMoreChildren);
-
-                                                if (children.size() > 0) {
-                                                    mRecyclerView.clearOnScrollListeners();
-                                                    mRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
-                                                        @Override
-                                                        public void onScrolled(@NonNull RecyclerView recyclerView, int dx, int dy) {
-                                                            super.onScrolled(recyclerView, dx, dy);
-                                                            if (!mIsSmoothScrolling && !mLockFab) {
-                                                                if (!recyclerView.canScrollVertically(1)) {
-                                                                    fab.hide();
-                                                                } else {
-                                                                    if (dy > 0) {
-                                                                        if (mSwipeUpToHideFab) {
-                                                                            fab.show();
-                                                                        } else {
-                                                                            fab.hide();
-                                                                        }
-                                                                    } else {
-                                                                        if (mSwipeUpToHideFab) {
-                                                                            fab.hide();
-                                                                        } else {
-                                                                            fab.show();
-                                                                        }
-                                                                    }
-                                                                }
-                                                            }
-
-                                                            if (!isLoadingMoreChildren && loadMoreChildrenSuccess) {
-                                                                int visibleItemCount = mLinearLayoutManager.getChildCount();
-                                                                int totalItemCount = mLinearLayoutManager.getItemCount();
-                                                                int firstVisibleItemPosition = mLinearLayoutManager.findFirstVisibleItemPosition();
-
-                                                                if ((visibleItemCount + firstVisibleItemPosition >= totalItemCount) && firstVisibleItemPosition >= 0) {
-                                                                    fetchMoreComments();
-                                                                }
-                                                            }
-                                                        }
-
-                                                        @Override
-                                                        public void onScrollStateChanged(@NonNull RecyclerView recyclerView, int newState) {
-                                                            if (newState == RecyclerView.SCROLL_STATE_IDLE) {
-                                                                mIsSmoothScrolling = false;
-                                                            }
-                                                        }
-                                                    });
-                                                }
-                                            }
-
-                                            @Override
-                                            public void onParseCommentFailed() {
-                                                mAdapter.initiallyLoadCommentsFailed();
-                                            }
-                                        });
-                            }
-                        }
-
-                        @Override
-                        public void onParsePostFail() {
-                            showErrorView(subredditId);
-                        }
-                    });
-                } else {
-                    showErrorView(subredditId);
-                }
-            }
-
-            @Override
-            public void onFailure(@NonNull Call<String> call, @NonNull Throwable t) {
-                showErrorView(subredditId);
+    private void editComment(String commentAuthor, String commentContentMarkdown, int position) {
+        if (sectionsPagerAdapter != null) {
+            ViewPostDetailFragment fragment = sectionsPagerAdapter.getCurrentFragment();
+            if (fragment != null) {
+                fragment.editComment(commentAuthor, commentContentMarkdown, position);
             }
-        });
-    }
-
-    private void fetchCommentsRespectRecommendedSort(boolean changeRefreshState, boolean checkSortState, String sortType) {
-        if (mRespectSubredditRecommendedSortType && mPost != null) {
-            FetchSubredditData.fetchSubredditData(mRetrofit, mPost.getSubredditName(),
-                    new FetchSubredditData.FetchSubredditDataListener() {
-                        @Override
-                        public void onFetchSubredditDataSuccess(SubredditData subredditData, int nCurrentOnlineSubscribers) {
-                            if (subredditData.getSuggestedCommentSort() == null || subredditData.getSuggestedCommentSort().equals("null") || subredditData.getSuggestedCommentSort().equals("")) {
-                                mRespectSubredditRecommendedSortType = false;
-                                ViewPostDetailActivity.this.sortType = mSortTypeSharedPreferences.getString(SharedPreferencesUtils.SORT_TYPE_POST_COMMENT, SortType.Type.BEST.value.toUpperCase());
-                                if (ViewPostDetailActivity.this.sortType != null) {
-                                    mToolbar.setTitle(new SortType(SortType.Type.valueOf(ViewPostDetailActivity.this.sortType)).getType().fullName);
-                                    ViewPostDetailActivity.this.sortType = ViewPostDetailActivity.this.sortType.toLowerCase();
-                                }
-                                fetchComments(changeRefreshState, checkSortState, ViewPostDetailActivity.this.sortType);
-                            } else {
-                                ViewPostDetailActivity.this.sortType = subredditData.getSuggestedCommentSort();
-                                String sortTypeTemp = ViewPostDetailActivity.this.sortType.toLowerCase().substring(0, 1).toUpperCase() + ViewPostDetailActivity.this.sortType.substring(1);
-                                mToolbar.setTitle(sortTypeTemp);
-                                fetchComments(changeRefreshState, checkSortState, subredditData.getSuggestedCommentSort());
-                            }
-                        }
-
-                        @Override
-                        public void onFetchSubredditDataFail() {
-                            mRespectSubredditRecommendedSortType = false;
-                            ViewPostDetailActivity.this.sortType = mSortTypeSharedPreferences.getString(SharedPreferencesUtils.SORT_TYPE_POST_COMMENT, SortType.Type.BEST.value.toUpperCase());
-                            if (ViewPostDetailActivity.this.sortType != null) {
-                                mToolbar.setTitle(new SortType(SortType.Type.valueOf(ViewPostDetailActivity.this.sortType)).getType().fullName);
-                                ViewPostDetailActivity.this.sortType = ViewPostDetailActivity.this.sortType.toLowerCase();
-                            }
-                        }
-                    });
-        } else {
-            fetchComments(changeRefreshState, checkSortState, sortType);
-        }
-    }
-
-    private void fetchComments(boolean changeRefreshState, boolean checkSortState, String sortType) {
-        isFetchingComments = true;
-        mAdapter.setSingleComment(mSingleCommentId, isSingleCommentThreadMode);
-        mAdapter.initiallyLoading();
-        String commentId = null;
-        if (isSingleCommentThreadMode) {
-            commentId = mSingleCommentId;
         }
-
-        Retrofit retrofit = mAccessToken == null ? mRetrofit : mOauthRetrofit;
-        FetchComment.fetchComments(retrofit, mAccessToken, mPost.getId(), commentId, sortType, mExpandChildren,
-                mLocale, new FetchComment.FetchCommentListener() {
-                    @Override
-                    public void onFetchCommentSuccess(ArrayList<Comment> expandedComments,
-                                                      String parentId, ArrayList<String> children) {
-                        if (checkSortState && isSortingComments) {
-                            if (changeRefreshState) {
-                                isRefreshing = false;
-                            }
-
-                            return;
-                        }
-
-                        ViewPostDetailActivity.this.children = children;
-
-                        comments = expandedComments;
-                        hasMoreChildren = children.size() != 0;
-                        mAdapter.addComments(expandedComments, hasMoreChildren);
-
-                        if (children.size() > 0) {
-                            mRecyclerView.clearOnScrollListeners();
-                            mRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
-                                @Override
-                                public void onScrolled(@NonNull RecyclerView recyclerView, int dx, int dy) {
-                                    super.onScrolled(recyclerView, dx, dy);
-                                    if (!mIsSmoothScrolling && !mLockFab) {
-                                        if (!recyclerView.canScrollVertically(1)) {
-                                            fab.hide();
-                                        } else {
-                                            if (dy > 0) {
-                                                if (mSwipeUpToHideFab) {
-                                                    fab.show();
-                                                } else {
-                                                    fab.hide();
-                                                }
-                                            } else {
-                                                if (mSwipeUpToHideFab) {
-                                                    fab.hide();
-                                                } else {
-                                                    fab.show();
-                                                }
-                                            }
-                                        }
-                                    }
-
-                                    if (!isLoadingMoreChildren && loadMoreChildrenSuccess) {
-                                        int visibleItemCount = mLinearLayoutManager.getChildCount();
-                                        int totalItemCount = mLinearLayoutManager.getItemCount();
-                                        int firstVisibleItemPosition = mLinearLayoutManager.findFirstVisibleItemPosition();
-
-                                        if ((visibleItemCount + firstVisibleItemPosition >= totalItemCount) && firstVisibleItemPosition >= 0) {
-                                            fetchMoreComments();
-                                        }
-                                    }
-                                }
-
-                                @Override
-                                public void onScrollStateChanged(@NonNull RecyclerView recyclerView, int newState) {
-                                    if (newState == RecyclerView.SCROLL_STATE_IDLE) {
-                                        mIsSmoothScrolling = false;
-                                    }
-                                }
-                            });
-                        }
-                        if (changeRefreshState) {
-                            isRefreshing = false;
-                        }
-
-                        isFetchingComments = false;
-                    }
-
-                    @Override
-                    public void onFetchCommentFailed() {
-                        isFetchingComments = false;
-                        if (checkSortState && isSortingComments) {
-                            if (changeRefreshState) {
-                                isRefreshing = false;
-                            }
-
-                            return;
-                        }
-
-                        mAdapter.initiallyLoadCommentsFailed();
-                        if (changeRefreshState) {
-                            isRefreshing = false;
-                        }
-                    }
-                });
-    }
-
-    private void fetchCommentsRespectRecommendedSort(boolean changeRefreshState) {
-        fetchCommentsRespectRecommendedSort(changeRefreshState, true, sortType);
     }
 
-    void fetchMoreComments() {
-        if (isFetchingComments || isLoadingMoreChildren || !loadMoreChildrenSuccess) {
-            return;
-        }
-
-        isLoadingMoreChildren = true;
-
-        Retrofit retrofit = mAccessToken == null ? mRetrofit : mOauthRetrofit;
-        FetchComment.fetchMoreComment(retrofit, mAccessToken, children, mChildrenStartingIndex,
-                0, mExpandChildren, mLocale, new FetchComment.FetchMoreCommentListener() {
-                    @Override
-                    public void onFetchMoreCommentSuccess(ArrayList<Comment> expandedComments, int childrenStartingIndex) {
-                        hasMoreChildren = childrenStartingIndex < children.size();
-                        mAdapter.addComments(expandedComments, hasMoreChildren);
-                        mChildrenStartingIndex = childrenStartingIndex;
-                        isLoadingMoreChildren = false;
-                        loadMoreChildrenSuccess = true;
-                    }
-
-                    @Override
-                    public void onFetchMoreCommentFailed() {
-                        isLoadingMoreChildren = false;
-                        loadMoreChildrenSuccess = false;
-                        mAdapter.loadMoreCommentsFailed();
-                    }
-                });
-    }
-
-    private void refresh(boolean fetchPost, boolean fetchComments) {
-        if (mAdapter != null && !isRefreshing) {
-            isRefreshing = true;
-            mChildrenStartingIndex = 0;
-
-            mFetchPostInfoLinearLayout.setVisibility(View.GONE);
-            mGlide.clear(mFetchPostInfoImageView);
-
-            if (fetchComments) {
-                fetchCommentsRespectRecommendedSort(!fetchPost);
+    private void awardGiven(String awardsHTML, int awardCount, int position) {
+        if (sectionsPagerAdapter != null) {
+            ViewPostDetailFragment fragment = sectionsPagerAdapter.getCurrentFragment();
+            if (fragment != null) {
+                fragment.awardGiven(awardsHTML, awardCount, position);
             }
-
-            if (fetchPost) {
-                Retrofit retrofit;
-                if (mAccessToken == null) {
-                    retrofit = mRetrofit;
-                } else {
-                    retrofit = mOauthRetrofit;
-                }
-                FetchPost.fetchPost(retrofit, mPost.getId(), mAccessToken, mLocale,
-                        new FetchPost.FetchPostListener() {
-                            @Override
-                            public void fetchPostSuccess(Post post) {
-                                mPost = post;
-                                mAdapter.updatePost(mPost);
-                                EventBus.getDefault().post(new PostUpdateEventToPostList(mPost, postListPosition));
-                                isRefreshing = false;
-                                setupMenu();
-                                mSwipeRefreshLayout.setRefreshing(false);
-                            }
-
-                            @Override
-                            public void fetchPostFailed() {
-                                showMessage(R.string.refresh_post_failed);
-                                isRefreshing = false;
-                            }
-                        });
-            }
-        }
-    }
-
-    private void showErrorView(String subredditId) {
-        mSwipeRefreshLayout.setRefreshing(false);
-        mFetchPostInfoLinearLayout.setVisibility(View.VISIBLE);
-        mFetchPostInfoLinearLayout.setOnClickListener(view -> fetchPostAndCommentsById(subredditId));
-        mFetchPostInfoTextView.setText(R.string.load_post_error);
-        mGlide.load(R.drawable.error_image).into(mFetchPostInfoImageView);
-    }
-
-    private void showMessage(int resId) {
-        if (showToast) {
-            Toast.makeText(ViewPostDetailActivity.this, resId, Toast.LENGTH_SHORT).show();
-        } else {
-            Snackbar.make(mCoordinatorLayout, resId, Snackbar.LENGTH_SHORT).show();
         }
     }
 
-    private void markNSFW() {
-        if (mMenu != null) {
-            mMenu.findItem(R.id.action_nsfw_view_post_detail_activity).setTitle(R.string.action_unmark_nsfw);
-        }
-
-        Map<String, String> params = new HashMap<>();
-        params.put(APIUtils.ID_KEY, mPost.getFullName());
-        mOauthRetrofit.create(RedditAPI.class).markNSFW(APIUtils.getOAuthHeader(mAccessToken), params)
-                .enqueue(new Callback<String>() {
-                    @Override
-                    public void onResponse(@NonNull Call<String> call, @NonNull Response<String> response) {
-                        if (response.isSuccessful()) {
-                            if (mMenu != null) {
-                                mMenu.findItem(R.id.action_nsfw_view_post_detail_activity).setTitle(R.string.action_unmark_nsfw);
-                            }
-
-                            refresh(true, false);
-                            showMessage(R.string.mark_nsfw_success);
-                        } else {
-                            if (mMenu != null) {
-                                mMenu.findItem(R.id.action_nsfw_view_post_detail_activity).setTitle(R.string.action_mark_nsfw);
-                            }
-
-                            showMessage(R.string.mark_nsfw_failed);
-                        }
-                    }
-
-                    @Override
-                    public void onFailure(@NonNull Call<String> call, @NonNull Throwable t) {
-                        if (mMenu != null) {
-                            mMenu.findItem(R.id.action_nsfw_view_post_detail_activity).setTitle(R.string.action_mark_nsfw);
-                        }
-
-                        showMessage(R.string.mark_nsfw_failed);
-                    }
-                });
-    }
-
-    private void unmarkNSFW() {
-        if (mMenu != null) {
-            mMenu.findItem(R.id.action_nsfw_view_post_detail_activity).setTitle(R.string.action_mark_nsfw);
-        }
-
-        Map<String, String> params = new HashMap<>();
-        params.put(APIUtils.ID_KEY, mPost.getFullName());
-        mOauthRetrofit.create(RedditAPI.class).unmarkNSFW(APIUtils.getOAuthHeader(mAccessToken), params)
-                .enqueue(new Callback<String>() {
-                    @Override
-                    public void onResponse(@NonNull Call<String> call, @NonNull Response<String> response) {
-                        if (response.isSuccessful()) {
-                            if (mMenu != null) {
-                                mMenu.findItem(R.id.action_nsfw_view_post_detail_activity).setTitle(R.string.action_mark_nsfw);
-                            }
-
-                            refresh(true, false);
-                            showMessage(R.string.unmark_nsfw_success);
-                        } else {
-                            if (mMenu != null) {
-                                mMenu.findItem(R.id.action_nsfw_view_post_detail_activity).setTitle(R.string.action_unmark_nsfw);
-                            }
-
-                            showMessage(R.string.unmark_nsfw_failed);
-                        }
-                    }
-
-                    @Override
-                    public void onFailure(@NonNull Call<String> call, @NonNull Throwable t) {
-                        if (mMenu != null) {
-                            mMenu.findItem(R.id.action_nsfw_view_post_detail_activity).setTitle(R.string.action_unmark_nsfw);
-                        }
-
-                        showMessage(R.string.unmark_nsfw_failed);
-                    }
-                });
-    }
-
-    private void markSpoiler() {
-        if (mMenu != null) {
-            mMenu.findItem(R.id.action_spoiler_view_post_detail_activity).setTitle(R.string.action_unmark_spoiler);
-        }
-
-        Map<String, String> params = new HashMap<>();
-        params.put(APIUtils.ID_KEY, mPost.getFullName());
-        mOauthRetrofit.create(RedditAPI.class).markSpoiler(APIUtils.getOAuthHeader(mAccessToken), params)
-                .enqueue(new Callback<String>() {
-                    @Override
-                    public void onResponse(@NonNull Call<String> call, @NonNull Response<String> response) {
-                        if (response.isSuccessful()) {
-                            if (mMenu != null) {
-                                mMenu.findItem(R.id.action_spoiler_view_post_detail_activity).setTitle(R.string.action_unmark_spoiler);
-                            }
-
-                            refresh(true, false);
-                            showMessage(R.string.mark_spoiler_success);
-                        } else {
-                            if (mMenu != null) {
-                                mMenu.findItem(R.id.action_spoiler_view_post_detail_activity).setTitle(R.string.action_mark_spoiler);
-                            }
-
-                            showMessage(R.string.mark_spoiler_failed);
-                        }
-                    }
-
-                    @Override
-                    public void onFailure(@NonNull Call<String> call, @NonNull Throwable t) {
-                        if (mMenu != null) {
-                            mMenu.findItem(R.id.action_spoiler_view_post_detail_activity).setTitle(R.string.action_mark_spoiler);
-                        }
-
-                        showMessage(R.string.mark_spoiler_failed);
-                    }
-                });
-    }
-
-    private void unmarkSpoiler() {
-        if (mMenu != null) {
-            mMenu.findItem(R.id.action_spoiler_view_post_detail_activity).setTitle(R.string.action_mark_spoiler);
-        }
-
-        Map<String, String> params = new HashMap<>();
-        params.put(APIUtils.ID_KEY, mPost.getFullName());
-        mOauthRetrofit.create(RedditAPI.class).unmarkSpoiler(APIUtils.getOAuthHeader(mAccessToken), params)
-                .enqueue(new Callback<String>() {
-                    @Override
-                    public void onResponse(@NonNull Call<String> call, @NonNull Response<String> response) {
-                        if (response.isSuccessful()) {
-                            if (mMenu != null) {
-                                mMenu.findItem(R.id.action_spoiler_view_post_detail_activity).setTitle(R.string.action_mark_spoiler);
-                            }
-
-                            refresh(true, false);
-                            showMessage(R.string.unmark_spoiler_success);
-                        } else {
-                            if (mMenu != null) {
-                                mMenu.findItem(R.id.action_spoiler_view_post_detail_activity).setTitle(R.string.action_unmark_spoiler);
-                            }
-
-                            showMessage(R.string.unmark_spoiler_failed);
-                        }
-                    }
-
-                    @Override
-                    public void onFailure(@NonNull Call<String> call, @NonNull Throwable t) {
-                        if (mMenu != null) {
-                            mMenu.findItem(R.id.action_spoiler_view_post_detail_activity).setTitle(R.string.action_unmark_spoiler);
-                        }
-
-                        showMessage(R.string.unmark_spoiler_failed);
-                    }
-                });
-    }
-
     public void deleteComment(String fullName, int position) {
-        new MaterialAlertDialogBuilder(this, R.style.MaterialAlertDialogTheme)
-                .setTitle(R.string.delete_this_comment)
-                .setMessage(R.string.are_you_sure)
-                .setPositiveButton(R.string.delete, (dialogInterface, i)
-                        -> DeleteThing.delete(mOauthRetrofit, fullName, mAccessToken, new DeleteThing.DeleteThingListener() {
-                    @Override
-                    public void deleteSuccess() {
-                        Toast.makeText(ViewPostDetailActivity.this, R.string.delete_post_success, Toast.LENGTH_SHORT).show();
-                        mAdapter.deleteComment(position);
-                    }
-
-                    @Override
-                    public void deleteFailed() {
-                        Toast.makeText(ViewPostDetailActivity.this, R.string.delete_post_failed, Toast.LENGTH_SHORT).show();
-                    }
-                }))
-                .setNegativeButton(R.string.cancel, null)
-                .show();
-    }
-
-    public void showRemovedComment(Comment comment, int position) {
-        Toast.makeText(ViewPostDetailActivity.this, R.string.fetching_removed_comment, Toast.LENGTH_SHORT).show();
-        FetchRemovedComment.fetchRemovedComment(
-                pushshiftRetrofit,
-                comment,
-                new FetchRemovedComment.FetchRemovedCommentListener() {
-                    @Override
-                    public void fetchSuccess(Comment comment) {
-                        mAdapter.editComment(comment.getAuthor(), comment.getCommentMarkdown(), position);
-                    }
-
-                    @Override
-                    public void fetchFailed() {
-                        Toast.makeText(ViewPostDetailActivity.this, R.string.show_removed_comment_failed, Toast.LENGTH_SHORT).show();
-                    }
-                });
-    }
-
-    public void changeToNomalThreadMode() {
-        isSingleCommentThreadMode = false;
-        mSingleCommentId = null;
-        mRespectSubredditRecommendedSortType = mSharedPreferences.getBoolean(SharedPreferencesUtils.RESPECT_SUBREDDIT_RECOMMENDED_COMMENT_SORT_TYPE, false);
-        refresh(false, true);
-    }
-
-    public void scrollToNextParentComment() {
-        if (mLinearLayoutManager != null) {
-            int currentPosition = mLinearLayoutManager.findFirstVisibleItemPosition();
-            if (mAdapter != null) {
-                int nextParentPosition = mAdapter.getNextParentCommentPosition(currentPosition);
-                if (nextParentPosition < 0) {
-                    return;
-                }
-                mSmoothScroller.setTargetPosition(nextParentPosition);
-                if (mLinearLayoutManager != null) {
-                    mIsSmoothScrolling = true;
-                    mLinearLayoutManager.startSmoothScroll(mSmoothScroller);
-                }
+        if (sectionsPagerAdapter != null) {
+            ViewPostDetailFragment fragment = sectionsPagerAdapter.getCurrentFragment();
+            if (fragment != null) {
+                fragment.deleteComment(fullName, position);
             }
         }
     }
 
-    public void scrollToPreviousParentComment() {
-        if (mLinearLayoutManager != null) {
-            int currentPosition = mLinearLayoutManager.findFirstVisibleItemPosition();
-            if (mAdapter != null) {
-                int nextParentPosition = mAdapter.getPreviousParentCommentPosition(currentPosition);
-                if (nextParentPosition < 0) {
-                    return;
-                }
-                mSmoothScroller.setTargetPosition(nextParentPosition);
-                if (mLinearLayoutManager != null) {
-                    mIsSmoothScrolling = true;
-                    mLinearLayoutManager.startSmoothScroll(mSmoothScroller);
-                }
-            }
-        }
-    }
-
-    public void delayTransition() {
-        TransitionManager.beginDelayedTransition(mRecyclerView, new AutoTransition());
-    }
-
-    @Subscribe
-    public void onPostUpdateEvent(PostUpdateEventToDetailActivity event) {
-        if (mPost.getId().equals(event.post.getId())) {
-            mPost.setVoteType(event.post.getVoteType());
-            mPost.setSaved(event.post.isSaved());
-            if (mMenu != null) {
-                if (event.post.isSaved()) {
-                    mMenu.findItem(R.id.action_save_view_post_detail_activity).setIcon(mSavedIcon);
-                } else {
-                    mMenu.findItem(R.id.action_save_view_post_detail_activity).setIcon(mUnsavedIcon);
-                }
+    public void showRemovedComment(Comment comment, int position) {
+        if (sectionsPagerAdapter != null) {
+            ViewPostDetailFragment fragment = sectionsPagerAdapter.getCurrentFragment();
+            if (fragment != null) {
+                fragment.showRemovedComment(comment, position);
             }
-            mAdapter.updatePost(mPost);
-        }
-    }
-
-    @Subscribe
-    public void onChangeNSFWBlurEvent(ChangeNSFWBlurEvent event) {
-        mAdapter.setBlurNSFW(event.needBlurNSFW);
-        refreshAdapter();
-    }
-
-    @Subscribe
-    public void onChangeSpoilerBlurEvent(ChangeSpoilerBlurEvent event) {
-        mAdapter.setBlurSpoiler(event.needBlurSpoiler);
-        refreshAdapter();
-    }
-
-    private void refreshAdapter() {
-        int previousPosition = -1;
-        if (mLinearLayoutManager != null) {
-            previousPosition = mLinearLayoutManager.findFirstVisibleItemPosition();
-        }
-
-        RecyclerView.LayoutManager layoutManager = mRecyclerView.getLayoutManager();
-        mRecyclerView.setAdapter(null);
-        mRecyclerView.setLayoutManager(null);
-        mRecyclerView.setAdapter(mAdapter);
-        mRecyclerView.setLayoutManager(layoutManager);
-
-        if (previousPosition > 0) {
-            mRecyclerView.scrollToPosition(previousPosition);
         }
     }
 
@@ -1426,271 +293,11 @@ public class ViewPostDetailActivity extends BaseActivity implements FlairBottomS
         }
     }
 
-    @Subscribe
-    public void onChangeNetworkStatusEvent(ChangeNetworkStatusEvent changeNetworkStatusEvent) {
-        if (mAdapter != null) {
-            String autoplay = mSharedPreferences.getString(SharedPreferencesUtils.VIDEO_AUTOPLAY, SharedPreferencesUtils.VIDEO_AUTOPLAY_VALUE_NEVER);
-            String dataSavingMode = mSharedPreferences.getString(SharedPreferencesUtils.DATA_SAVING_MODE, SharedPreferencesUtils.DATA_SAVING_MODE_OFF);
-            boolean stateChanged = false;
-            if (autoplay.equals(SharedPreferencesUtils.VIDEO_AUTOPLAY_VALUE_ON_WIFI)) {
-                mAdapter.setAutoplay(changeNetworkStatusEvent.connectedNetwork == Utils.NETWORK_TYPE_WIFI);
-                stateChanged = true;
-            }
-            if (dataSavingMode.equals(SharedPreferencesUtils.DATA_SAVING_MODE_ONLY_ON_CELLULAR_DATA)) {
-                mAdapter.setDataSavingMode(changeNetworkStatusEvent.connectedNetwork == Utils.NETWORK_TYPE_CELLULAR);
-                stateChanged = true;
-            }
-
-            if (stateChanged) {
-                refreshAdapter();
-            }
-        }
-    }
-
-    @Override
-    public boolean onCreateOptionsMenu(Menu menu) {
-        getMenuInflater().inflate(R.menu.view_post_detail_activity, menu);
-        applyMenuItemTheme(menu);
-        mMenu = menu;
-        if (mPost != null) {
-            setupMenu();
-        }
-        return true;
-    }
-
-    public void showRemovedPost() {
-        Toast.makeText(ViewPostDetailActivity.this, R.string.fetching_removed_post, Toast.LENGTH_SHORT).show();
-        FetchRemovedPost.fetchRemovedPost(
-                pushshiftRetrofit,
-                mPost,
-                new FetchRemovedPost.FetchRemovedPostListener() {
-                    @Override
-                    public void fetchSuccess(Post post) {
-                        mPost = post;
-                        mAdapter.updatePost(post);
-                    }
-
-                    @Override
-                    public void fetchFailed() {
-                        Toast.makeText(ViewPostDetailActivity.this, R.string.show_removed_post_failed, Toast.LENGTH_SHORT).show();
-                    }
-                });
-    }
-
     @Override
     public boolean onOptionsItemSelected(@NonNull MenuItem item) {
-        switch (item.getItemId()) {
-            case R.id.action_refresh_view_post_detail_activity:
-                refresh(true, true);
-                return true;
-            case R.id.action_comment_view_post_detail_activity:
-                if (mPost != null) {
-                    if (mPost.isArchived()) {
-                        showMessage(R.string.archived_post_reply_unavailable);
-                        return true;
-                    }
-
-                    if (mPost.isLocked()) {
-                        showMessage(R.string.locked_post_comment_unavailable);
-                        return true;
-                    }
-
-                    if (mAccessToken == null) {
-                        showMessage(R.string.login_first);
-                        return true;
-                    }
-
-                    Intent intent = new Intent(this, CommentActivity.class);
-                    intent.putExtra(CommentActivity.EXTRA_COMMENT_PARENT_TEXT_MARKDOWN_KEY, mPost.getTitle());
-                    intent.putExtra(CommentActivity.EXTRA_COMMENT_PARENT_BODY_MARKDOWN_KEY, mPost.getSelfText());
-                    intent.putExtra(CommentActivity.EXTRA_COMMENT_PARENT_BODY_KEY, mPost.getSelfTextPlain());
-                    intent.putExtra(CommentActivity.EXTRA_PARENT_FULLNAME_KEY, mPost.getFullName());
-                    intent.putExtra(CommentActivity.EXTRA_PARENT_DEPTH_KEY, 0);
-                    intent.putExtra(CommentActivity.EXTRA_IS_REPLYING_KEY, false);
-                    startActivityForResult(intent, WRITE_COMMENT_REQUEST_CODE);
-                }
-                return true;
-            case R.id.action_save_view_post_detail_activity:
-                if (mPost != null && mAccessToken != null) {
-                    if (mPost.isSaved()) {
-                        item.setIcon(mUnsavedIcon);
-                        SaveThing.unsaveThing(mOauthRetrofit, mAccessToken, mPost.getFullName(),
-                                new SaveThing.SaveThingListener() {
-                                    @Override
-                                    public void success() {
-                                        mPost.setSaved(false);
-                                        item.setIcon(mUnsavedIcon);
-                                        showMessage(R.string.post_unsaved_success);
-                                        EventBus.getDefault().post(new PostUpdateEventToPostList(mPost, postListPosition));
-                                    }
-
-                                    @Override
-                                    public void failed() {
-                                        mPost.setSaved(true);
-                                        item.setIcon(mSavedIcon);
-                                        showMessage(R.string.post_unsaved_failed);
-                                        EventBus.getDefault().post(new PostUpdateEventToPostList(mPost, postListPosition));
-                                    }
-                                });
-                    } else {
-                        item.setIcon(mSavedIcon);
-                        SaveThing.saveThing(mOauthRetrofit, mAccessToken, mPost.getFullName(),
-                                new SaveThing.SaveThingListener() {
-                                    @Override
-                                    public void success() {
-                                        mPost.setSaved(true);
-                                        item.setIcon(mSavedIcon);
-                                        showMessage(R.string.post_saved_success);
-                                        EventBus.getDefault().post(new PostUpdateEventToPostList(mPost, postListPosition));
-                                    }
-
-                                    @Override
-                                    public void failed() {
-                                        mPost.setSaved(false);
-                                        item.setIcon(mUnsavedIcon);
-                                        showMessage(R.string.post_saved_failed);
-                                        EventBus.getDefault().post(new PostUpdateEventToPostList(mPost, postListPosition));
-                                    }
-                                });
-                    }
-                }
-                return true;
-            case R.id.action_sort_view_post_detail_activity:
-                if (mPost != null) {
-                    mPostCommentSortTypeBottomSheetFragment.show(getSupportFragmentManager(), mPostCommentSortTypeBottomSheetFragment.getTag());
-                }
-                return true;
-            case R.id.action_view_crosspost_parent_view_post_detail_activity:
-                Intent crosspostIntent = new Intent(this, ViewPostDetailActivity.class);
-                crosspostIntent.putExtra(ViewPostDetailActivity.EXTRA_POST_ID, mPost.getCrosspostParentId());
-                startActivity(crosspostIntent);
-                return true;
-            case R.id.action_hide_view_post_detail_activity:
-                if (mPost != null && mAccessToken != null) {
-                    if (mPost.isHidden()) {
-                        item.setTitle(R.string.action_hide_post);
-
-                        HidePost.unhidePost(mOauthRetrofit, mAccessToken, mPost.getFullName(), new HidePost.HidePostListener() {
-                            @Override
-                            public void success() {
-                                mPost.setHidden(false);
-                                item.setTitle(R.string.action_hide_post);
-                                showMessage(R.string.post_unhide_success);
-                                EventBus.getDefault().post(new PostUpdateEventToPostList(mPost, postListPosition));
-                            }
-
-                            @Override
-                            public void failed() {
-                                mPost.setHidden(true);
-                                item.setTitle(R.string.action_unhide_post);
-                                showMessage(R.string.post_unhide_failed);
-                                EventBus.getDefault().post(new PostUpdateEventToPostList(mPost, postListPosition));
-                            }
-                        });
-                    } else {
-                        item.setTitle(R.string.action_unhide_post);
-
-                        HidePost.hidePost(mOauthRetrofit, mAccessToken, mPost.getFullName(), new HidePost.HidePostListener() {
-                            @Override
-                            public void success() {
-                                mPost.setHidden(true);
-                                item.setTitle(R.string.action_unhide_post);
-                                showMessage(R.string.post_hide_success);
-                                EventBus.getDefault().post(new PostUpdateEventToPostList(mPost, postListPosition));
-                            }
-
-                            @Override
-                            public void failed() {
-                                mPost.setHidden(false);
-                                item.setTitle(R.string.action_hide_post);
-                                showMessage(R.string.post_hide_failed);
-                                EventBus.getDefault().post(new PostUpdateEventToPostList(mPost, postListPosition));
-                            }
-                        });
-                    }
-                }
-                return true;
-            case R.id.action_edit_view_post_detail_activity:
-                Intent editPostIntent = new Intent(this, EditPostActivity.class);
-                editPostIntent.putExtra(EditPostActivity.EXTRA_FULLNAME, mPost.getFullName());
-                editPostIntent.putExtra(EditPostActivity.EXTRA_TITLE, mPost.getTitle());
-                editPostIntent.putExtra(EditPostActivity.EXTRA_CONTENT, mPost.getSelfText());
-                startActivityForResult(editPostIntent, EDIT_POST_REQUEST_CODE);
-                return true;
-            case R.id.action_delete_view_post_detail_activity:
-                new MaterialAlertDialogBuilder(this, R.style.MaterialAlertDialogTheme)
-                        .setTitle(R.string.delete_this_post)
-                        .setMessage(R.string.are_you_sure)
-                        .setPositiveButton(R.string.delete, (dialogInterface, i)
-                                -> DeleteThing.delete(mOauthRetrofit, mPost.getFullName(), mAccessToken, new DeleteThing.DeleteThingListener() {
-                            @Override
-                            public void deleteSuccess() {
-                                Toast.makeText(ViewPostDetailActivity.this, R.string.delete_post_success, Toast.LENGTH_SHORT).show();
-                                finish();
-                            }
-
-                            @Override
-                            public void deleteFailed() {
-                                showMessage(R.string.delete_post_failed);
-                            }
-                        }))
-                        .setNegativeButton(R.string.cancel, null)
-                        .show();
-                return true;
-            case R.id.action_nsfw_view_post_detail_activity:
-                if (mPost.isNSFW()) {
-                    unmarkNSFW();
-                } else {
-                    markNSFW();
-                }
-                return true;
-            case R.id.action_spoiler_view_post_detail_activity:
-                if (mPost.isSpoiler()) {
-                    unmarkSpoiler();
-                } else {
-                    markSpoiler();
-                }
-                return true;
-            case R.id.action_edit_flair_view_post_detail_activity:
-                FlairBottomSheetFragment flairBottomSheetFragment = new FlairBottomSheetFragment();
-                Bundle bundle = new Bundle();
-                bundle.putString(FlairBottomSheetFragment.EXTRA_ACCESS_TOKEN, mAccessToken);
-                bundle.putString(FlairBottomSheetFragment.EXTRA_SUBREDDIT_NAME, mPost.getSubredditName());
-                flairBottomSheetFragment.setArguments(bundle);
-                flairBottomSheetFragment.show(getSupportFragmentManager(), flairBottomSheetFragment.getTag());
-                return true;
-            case R.id.action_give_award_view_post_detail_activity:
-                if (mAccessToken == null) {
-                    Toast.makeText(this, R.string.login_first, Toast.LENGTH_SHORT).show();
-                    return true;
-                }
-
-                Intent giveAwardIntent = new Intent(this, GiveAwardActivity.class);
-                giveAwardIntent.putExtra(GiveAwardActivity.EXTRA_THING_FULLNAME, mPost.getFullName());
-                giveAwardIntent.putExtra(GiveAwardActivity.EXTRA_ITEM_POSITION, 0);
-                startActivityForResult(giveAwardIntent, GIVE_AWARD_REQUEST_CODE);
-                return true;
-            case R.id.action_report_view_post_detail_activity:
-                if (mAccessToken == null) {
-                    Toast.makeText(this, R.string.login_first, Toast.LENGTH_SHORT).show();
-                    return true;
-                }
-                Intent intent = new Intent(this, ReportActivity.class);
-                intent.putExtra(ReportActivity.EXTRA_SUBREDDIT_NAME, mPost.getSubredditName());
-                intent.putExtra(ReportActivity.EXTRA_THING_FULLNAME, mPost.getFullName());
-                startActivity(intent);
-                return true;
-            case R.id.action_see_removed_view_post_detail_activity:
-                showRemovedPost();
-                return true;
-            case R.id.action_crosspost_view_post_detail_activity:
-                Intent submitCrosspostIntent = new Intent(this, SubmitCrosspostActivity.class);
-                submitCrosspostIntent.putExtra(SubmitCrosspostActivity.EXTRA_POST, mPost);
-                startActivity(submitCrosspostIntent);
-                return true;
-            case android.R.id.home:
-                onBackPressed();
-                return true;
+        if (item.getItemId() == android.R.id.home) {
+            onBackPressed();
+            return true;
         }
         return false;
     }
@@ -1698,42 +305,19 @@ public class ViewPostDetailActivity extends BaseActivity implements FlairBottomS
     @Override
     protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
         super.onActivityResult(requestCode, resultCode, data);
-        if (requestCode == WRITE_COMMENT_REQUEST_CODE) {
-            if (data != null && resultCode == RESULT_OK) {
-                if (data.hasExtra(RETURN_EXTRA_COMMENT_DATA_KEY)) {
-                    Comment comment = data.getParcelableExtra(RETURN_EXTRA_COMMENT_DATA_KEY);
-                    if (comment != null && comment.getDepth() == 0) {
-                        mAdapter.addComment(comment);
-                    } else {
-                        String parentFullname = data.getStringExtra(CommentActivity.EXTRA_PARENT_FULLNAME_KEY);
-                        int parentPosition = data.getIntExtra(CommentActivity.EXTRA_PARENT_POSITION_KEY, -1);
-                        if (parentFullname != null && parentPosition >= 0) {
-                            mAdapter.addChildComment(comment, parentFullname, parentPosition);
-                        }
-                    }
-                } else {
-                    Toast.makeText(this, R.string.send_comment_failed, Toast.LENGTH_SHORT).show();
-                }
-            }
-        } else if (requestCode == EDIT_POST_REQUEST_CODE) {
-            if (resultCode == RESULT_OK) {
-                refresh(true, false);
-            }
-        } else if (requestCode == EDIT_COMMENT_REQUEST_CODE) {
-            if (data != null && resultCode == RESULT_OK) {
-                mAdapter.editComment(null,
+        if (requestCode == EDIT_COMMENT_REQUEST_CODE) {
+            if (data != null && resultCode == Activity.RESULT_OK) {
+                editComment(null,
                         data.getStringExtra(EditCommentActivity.EXTRA_EDITED_COMMENT_CONTENT),
                         data.getExtras().getInt(EditCommentActivity.EXTRA_EDITED_COMMENT_POSITION));
             }
         } else if (requestCode == GIVE_AWARD_REQUEST_CODE) {
-            if (data != null && resultCode == RESULT_OK) {
+            if (data != null && resultCode == Activity.RESULT_OK) {
                 Toast.makeText(this, R.string.give_award_success, Toast.LENGTH_SHORT).show();
                 int position = data.getIntExtra(GiveAwardActivity.EXTRA_RETURN_ITEM_POSITION, 0);
                 String newAwardsHTML = data.getStringExtra(GiveAwardActivity.EXTRA_RETURN_NEW_AWARDS);
                 int newAwardsCount = data.getIntExtra(GiveAwardActivity.EXTRA_RETURN_NEW_AWARDS_COUNT, 0);
-                if (mAdapter != null) {
-                    mAdapter.giveAward(newAwardsHTML, newAwardsCount, position);
-                }
+                awardGiven(newAwardsHTML, newAwardsCount, position);
             }
         }
     }
@@ -1741,7 +325,6 @@ public class ViewPostDetailActivity extends BaseActivity implements FlairBottomS
     @Override
     protected void onSaveInstanceState(@NonNull Bundle outState) {
         super.onSaveInstanceState(outState);
-        comments = mAdapter == null ? null : mAdapter.getVisibleComments();
         Bridge.saveInstanceState(this, outState);
     }
 
@@ -1765,13 +348,16 @@ public class ViewPostDetailActivity extends BaseActivity implements FlairBottomS
     @Override
     public boolean onKeyDown(int keyCode, KeyEvent event) {
         if (mVolumeKeysNavigateComments) {
-            switch (keyCode) {
-                case KeyEvent.KEYCODE_VOLUME_UP:
-                    scrollToPreviousParentComment();
-                    return true;
-                case KeyEvent.KEYCODE_VOLUME_DOWN:
-                    scrollToNextParentComment();
-                    return true;
+            ViewPostDetailFragment fragment = sectionsPagerAdapter.getCurrentFragment();
+            if (fragment != null) {
+                switch (keyCode) {
+                    case KeyEvent.KEYCODE_VOLUME_UP:
+                        fragment.scrollToPreviousParentComment();
+                        return true;
+                    case KeyEvent.KEYCODE_VOLUME_DOWN:
+                        fragment.scrollToNextParentComment();
+                        return true;
+                }
             }
         }
         return super.onKeyDown(keyCode, event);
@@ -1779,46 +365,19 @@ public class ViewPostDetailActivity extends BaseActivity implements FlairBottomS
 
     @Override
     public void flairSelected(Flair flair) {
-        Map<String, String> params = new HashMap<>();
-        params.put(APIUtils.API_TYPE_KEY, APIUtils.API_TYPE_JSON);
-        params.put(APIUtils.FLAIR_TEMPLATE_ID_KEY, flair.getId());
-        params.put(APIUtils.LINK_KEY, mPost.getFullName());
-        params.put(APIUtils.TEXT_KEY, flair.getText());
-
-        mOauthRetrofit.create(RedditAPI.class).selectFlair(mPost.getSubredditNamePrefixed(),
-                APIUtils.getOAuthHeader(mAccessToken), params).enqueue(new Callback<String>() {
-            @Override
-            public void onResponse(@NonNull Call<String> call, @NonNull Response<String> response) {
-                if (response.isSuccessful()) {
-                    refresh(true, false);
-                    showMessage(R.string.update_flair_success);
-                } else {
-                    showMessage(R.string.update_flair_failed);
-                }
-            }
-
-            @Override
-            public void onFailure(@NonNull Call<String> call, @NonNull Throwable t) {
-                showMessage(R.string.update_flair_failed);
-            }
-        });
+        ViewPostDetailFragment fragment = sectionsPagerAdapter.getCurrentFragment();
+        if (fragment != null) {
+            fragment.changeFlair(flair);
+        }
     }
 
     @Override
     public void sortTypeSelected(SortType sortType) {
-        mFetchPostInfoLinearLayout.setVisibility(View.GONE);
-        mGlide.clear(mFetchPostInfoImageView);
-        mChildrenStartingIndex = 0;
-        if (children != null) {
-            children.clear();
-        }
-        this.sortType = sortType.getType().value;
-        if (!mSharedPreferences.getBoolean(SharedPreferencesUtils.RESPECT_SUBREDDIT_RECOMMENDED_COMMENT_SORT_TYPE, false)) {
-            mSortTypeSharedPreferences.edit().putString(SharedPreferencesUtils.SORT_TYPE_POST_COMMENT, sortType.getType().name()).apply();
+        ViewPostDetailFragment fragment = sectionsPagerAdapter.getCurrentFragment();
+        if (fragment != null) {
+            fragment.changeSortType(sortType);
+            mToolbar.setTitle(sortType.getType().fullName);
         }
-        fetchCommentsRespectRecommendedSort(false, false, sortType.getType().value);
-
-        mToolbar.setTitle(sortType.getType().fullName);
     }
 
     public void lockSwipeRightToGoBack() {
@@ -1835,8 +394,47 @@ public class ViewPostDetailActivity extends BaseActivity implements FlairBottomS
 
     @Override
     public void onLongPress() {
-        if (mLinearLayoutManager != null) {
-            mLinearLayoutManager.scrollToPositionWithOffset(0, 0);
+        ViewPostDetailFragment fragment = sectionsPagerAdapter.getCurrentFragment();
+        if (fragment != null) {
+            fragment.goToTop();
+        }
+    }
+
+    private class SectionsPagerAdapter extends FragmentStateAdapter {
+
+        public SectionsPagerAdapter(@NonNull FragmentActivity fragmentActivity) {
+            super(fragmentActivity);
+        }
+
+        @NonNull
+        @Override
+        public Fragment createFragment(int position) {
+            ViewPostDetailFragment fragment = new ViewPostDetailFragment();
+            Bundle bundle = new Bundle();
+            if (posts == null) {
+                bundle.putParcelable(ViewPostDetailFragment.EXTRA_POST_DATA, post);
+            } else {
+                bundle.putParcelable(ViewPostDetailFragment.EXTRA_POST_DATA, posts.get(position));
+            }
+            fragment.setArguments(bundle);
+            return fragment;
+        }
+
+        @Override
+        public int getItemCount() {
+            return posts == null ? 1 : posts.size();
+        }
+
+        @Nullable
+        ViewPostDetailFragment getCurrentFragment() {
+            if (viewPager2 == null || fragmentManager == null) {
+                return null;
+            }
+            Fragment fragment = fragmentManager.findFragmentByTag("f" + viewPager2.getCurrentItem());
+            if (fragment instanceof PostFragment) {
+                return (ViewPostDetailFragment) fragment;
+            }
+            return null;
         }
     }
 }
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/CommentAndPostRecyclerViewAdapter.java b/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/CommentAndPostRecyclerViewAdapter.java
index 0d4569ca..11a9df06 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/CommentAndPostRecyclerViewAdapter.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/CommentAndPostRecyclerViewAdapter.java
@@ -113,6 +113,7 @@ import ml.docilealligator.infinityforreddit.comment.FetchComment;
 import ml.docilealligator.infinityforreddit.customtheme.CustomThemeWrapper;
 import ml.docilealligator.infinityforreddit.customviews.AspectRatioGifImageView;
 import ml.docilealligator.infinityforreddit.customviews.MarkwonLinearLayoutManager;
+import ml.docilealligator.infinityforreddit.fragments.ViewPostDetailFragment;
 import ml.docilealligator.infinityforreddit.post.Post;
 import ml.docilealligator.infinityforreddit.post.PostDataSource;
 import ml.docilealligator.infinityforreddit.utils.APIUtils;
@@ -143,6 +144,7 @@ public class CommentAndPostRecyclerViewAdapter extends RecyclerView.Adapter<Recy
     private static final int VIEW_TYPE_VIEW_ALL_COMMENTS = 17;
 
     private AppCompatActivity mActivity;
+    private ViewPostDetailFragment mFragment;
     private Executor mExecutor;
     private Retrofit mRetrofit;
     private Retrofit mOauthRetrofit;
@@ -238,7 +240,7 @@ public class CommentAndPostRecyclerViewAdapter extends RecyclerView.Adapter<Recy
     private float mScale;
     private ExoCreator mExoCreator;
 
-    public CommentAndPostRecyclerViewAdapter(AppCompatActivity activity, Executor executor, CustomThemeWrapper customThemeWrapper,
+    public CommentAndPostRecyclerViewAdapter(AppCompatActivity activity, ViewPostDetailFragment fragment, Executor executor, CustomThemeWrapper customThemeWrapper,
                                              Retrofit retrofit, Retrofit oauthRetrofit, Retrofit gfycatRetrofit,
                                              Retrofit redgifsRetrofit,
                                              RedditDataRoomDatabase redditDataRoomDatabase, RequestManager glide,
@@ -249,6 +251,7 @@ public class CommentAndPostRecyclerViewAdapter extends RecyclerView.Adapter<Recy
                                              SharedPreferences nsfwAndSpoilerSharedPreferences, ExoCreator exoCreator,
                                              CommentRecyclerViewAdapterCallback commentRecyclerViewAdapterCallback) {
         mActivity = activity;
+        mFragment = fragment;
         mExecutor = executor;
         mRetrofit = retrofit;
         mOauthRetrofit = oauthRetrofit;
@@ -3765,9 +3768,9 @@ public class CommentAndPostRecyclerViewAdapter extends RecyclerView.Adapter<Recy
             if (bottomConstraintLayout.getLayoutParams().height == 0) {
                 bottomConstraintLayout.getLayoutParams().height = LinearLayout.LayoutParams.WRAP_CONTENT;
                 topScoreTextView.setVisibility(View.GONE);
-                ((ViewPostDetailActivity) mActivity).delayTransition();
+                mFragment.delayTransition();
             } else {
-                ((ViewPostDetailActivity) mActivity).delayTransition();
+                mFragment.delayTransition();
                 bottomConstraintLayout.getLayoutParams().height = 0;
                 topScoreTextView.setVisibility(View.VISIBLE);
             }
@@ -3944,7 +3947,7 @@ public class CommentAndPostRecyclerViewAdapter extends RecyclerView.Adapter<Recy
                 if (mActivity != null && mActivity instanceof ViewPostDetailActivity) {
                     mIsSingleCommentThreadMode = false;
                     mSingleCommentId = null;
-                    ((ViewPostDetailActivity) mActivity).changeToNomalThreadMode();
+                    mFragment.changeToNomalThreadMode();
                 }
             });
 
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/PostRecyclerViewAdapter.java b/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/PostRecyclerViewAdapter.java
index 515d0552..60043539 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/PostRecyclerViewAdapter.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/adapters/PostRecyclerViewAdapter.java
@@ -92,6 +92,7 @@ import ml.docilealligator.infinityforreddit.bottomsheetfragments.ShareLinkBottom
 import ml.docilealligator.infinityforreddit.customtheme.CustomThemeWrapper;
 import ml.docilealligator.infinityforreddit.customviews.AspectRatioGifImageView;
 import ml.docilealligator.infinityforreddit.events.PostUpdateEventToDetailActivity;
+import ml.docilealligator.infinityforreddit.fragments.PostFragment;
 import ml.docilealligator.infinityforreddit.post.Post;
 import ml.docilealligator.infinityforreddit.post.PostDataSource;
 import ml.docilealligator.infinityforreddit.user.UserDao;
@@ -128,6 +129,7 @@ public class PostRecyclerViewAdapter extends PagedListAdapter<Post, RecyclerView
         }
     };
     private AppCompatActivity mActivity;
+    private PostFragment mFragment;
     private Executor mExecutor;
     private Retrofit mOauthRetrofit;
     private Retrofit mRetrofit;
@@ -207,7 +209,7 @@ public class PostRecyclerViewAdapter extends PagedListAdapter<Post, RecyclerView
     private ExoCreator mExoCreator;
     private Callback mCallback;
 
-    public PostRecyclerViewAdapter(AppCompatActivity activity, Executor executor, Retrofit oauthRetrofit, Retrofit retrofit,
+    public PostRecyclerViewAdapter(AppCompatActivity activity, PostFragment fragment, Executor executor, Retrofit oauthRetrofit, Retrofit retrofit,
                                    Retrofit gfycatRetrofit, Retrofit redgifsRetrofit,
                                    RedditDataRoomDatabase redditDataRoomDatabase,
                                    CustomThemeWrapper customThemeWrapper, Locale locale, int imageViewWidth,
@@ -218,6 +220,7 @@ public class PostRecyclerViewAdapter extends PagedListAdapter<Post, RecyclerView
         super(DIFF_CALLBACK);
         if (activity != null) {
             mActivity = activity;
+            mFragment = fragment;
             mExecutor = executor;
             mOauthRetrofit = oauthRetrofit;
             mRetrofit = retrofit;
@@ -1629,7 +1632,7 @@ public class PostRecyclerViewAdapter extends PagedListAdapter<Post, RecyclerView
                         canStartActivity = false;
 
                         Intent intent = new Intent(mActivity, ViewPostDetailActivity.class);
-                        intent.putExtra(ViewPostDetailActivity.EXTRA_POST_DATA, post);
+                        intent.putExtra(ViewPostDetailActivity.EXTRA_POST_LIST, mFragment.getPostList());
                         intent.putExtra(ViewPostDetailActivity.EXTRA_POST_LIST_POSITION, getAdapterPosition());
                         mActivity.startActivity(intent);
                     }
@@ -2645,7 +2648,7 @@ public class PostRecyclerViewAdapter extends PagedListAdapter<Post, RecyclerView
                     canStartActivity = false;
 
                     Intent intent = new Intent(mActivity, ViewPostDetailActivity.class);
-                    intent.putExtra(ViewPostDetailActivity.EXTRA_POST_DATA, post);
+                    intent.putExtra(ViewPostDetailActivity.EXTRA_POST_LIST, mFragment.getPostList());
                     intent.putExtra(ViewPostDetailActivity.EXTRA_POST_LIST_POSITION, getAdapterPosition());
                     mActivity.startActivity(intent);
                 }
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/fragments/PostFragment.java b/app/src/main/java/ml/docilealligator/infinityforreddit/fragments/PostFragment.java
index 90b1a798..eb69cbee 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/fragments/PostFragment.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/fragments/PostFragment.java
@@ -437,7 +437,7 @@ public class PostFragment extends Fragment implements FragmentCommunicator {
             sortType = new SortType(SortType.Type.valueOf(sort), SortType.Time.valueOf(sortTime));
             postLayout = mPostLayoutSharedPreferences.getInt(SharedPreferencesUtils.POST_LAYOUT_SEARCH_POST, defaultPostLayout);
 
-            mAdapter = new PostRecyclerViewAdapter(activity, mExecutor, mOauthRetrofit, mRetrofit, mGfycatRetrofit,
+            mAdapter = new PostRecyclerViewAdapter(activity, this, mExecutor, mOauthRetrofit, mRetrofit, mGfycatRetrofit,
                     mRedgifsRetrofit, mRedditDataRoomDatabase, mCustomThemeWrapper, locale,
                     windowWidth, accessToken, accountName, postType, postLayout, true,
                     mSharedPreferences, mNsfwAndSpoilerSharedPreferences, mPostHistorySharedPreferences,
@@ -503,7 +503,7 @@ public class PostFragment extends Fragment implements FragmentCommunicator {
                 sortType = new SortType(SortType.Type.valueOf(sort));
             }
 
-            mAdapter = new PostRecyclerViewAdapter(activity, mExecutor, mOauthRetrofit, mRetrofit, mGfycatRetrofit,
+            mAdapter = new PostRecyclerViewAdapter(activity, this, mExecutor, mOauthRetrofit, mRetrofit, mGfycatRetrofit,
                     mRedgifsRetrofit, mRedditDataRoomDatabase, mCustomThemeWrapper, locale,
                     windowWidth, accessToken, accountName, postType, postLayout, displaySubredditName,
                     mSharedPreferences, mNsfwAndSpoilerSharedPreferences, mPostHistorySharedPreferences,
@@ -567,7 +567,7 @@ public class PostFragment extends Fragment implements FragmentCommunicator {
                 sortType = new SortType(SortType.Type.valueOf(sort));
             }
 
-            mAdapter = new PostRecyclerViewAdapter(activity, mExecutor, mOauthRetrofit, mRetrofit, mGfycatRetrofit,
+            mAdapter = new PostRecyclerViewAdapter(activity, this, mExecutor, mOauthRetrofit, mRetrofit, mGfycatRetrofit,
                     mRedgifsRetrofit, mRedditDataRoomDatabase, mCustomThemeWrapper, locale,
                     windowWidth, accessToken, accountName, postType, postLayout, true,
                     mSharedPreferences, mNsfwAndSpoilerSharedPreferences, mPostHistorySharedPreferences,
@@ -631,7 +631,7 @@ public class PostFragment extends Fragment implements FragmentCommunicator {
             }
             postLayout = mPostLayoutSharedPreferences.getInt(SharedPreferencesUtils.POST_LAYOUT_USER_POST_BASE + username, defaultPostLayout);
 
-            mAdapter = new PostRecyclerViewAdapter(activity, mExecutor, mOauthRetrofit, mRetrofit, mGfycatRetrofit,
+            mAdapter = new PostRecyclerViewAdapter(activity, this, mExecutor, mOauthRetrofit, mRetrofit, mGfycatRetrofit,
                     mRedgifsRetrofit, mRedditDataRoomDatabase, mCustomThemeWrapper, locale,
                     windowWidth, accessToken, accountName, postType, postLayout, true,
                     mSharedPreferences, mNsfwAndSpoilerSharedPreferences, mPostHistorySharedPreferences,
@@ -686,7 +686,7 @@ public class PostFragment extends Fragment implements FragmentCommunicator {
             }
             postLayout = mPostLayoutSharedPreferences.getInt(SharedPreferencesUtils.POST_LAYOUT_FRONT_PAGE_POST, defaultPostLayout);
 
-            mAdapter = new PostRecyclerViewAdapter(activity, mExecutor, mOauthRetrofit, mRetrofit, mGfycatRetrofit,
+            mAdapter = new PostRecyclerViewAdapter(activity, this, mExecutor, mOauthRetrofit, mRetrofit, mGfycatRetrofit,
                     mRedgifsRetrofit, mRedditDataRoomDatabase, mCustomThemeWrapper, locale,
                     windowWidth, accessToken, accountName, postType, postLayout, true,
                     mSharedPreferences, mNsfwAndSpoilerSharedPreferences, mPostHistorySharedPreferences,
@@ -1061,6 +1061,10 @@ public class PostFragment extends Fragment implements FragmentCommunicator {
         }
     }
 
+    public ArrayList<Post> getPostList() {
+        return new ArrayList<>(mPostViewModel.getPosts().getValue());
+    }
+
     @Override
     public void onAttach(@NonNull Context context) {
         super.onAttach(context);
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/fragments/ViewPostDetailFragment.java b/app/src/main/java/ml/docilealligator/infinityforreddit/fragments/ViewPostDetailFragment.java
new file mode 100644
index 00000000..5e41fdec
--- /dev/null
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/fragments/ViewPostDetailFragment.java
@@ -0,0 +1,1733 @@
+package ml.docilealligator.infinityforreddit.fragments;
+
+import android.annotation.SuppressLint;
+import android.app.Activity;
+import android.content.Context;
+import android.content.Intent;
+import android.content.SharedPreferences;
+import android.content.res.Resources;
+import android.graphics.Canvas;
+import android.graphics.drawable.ColorDrawable;
+import android.graphics.drawable.Drawable;
+import android.os.Bundle;
+import android.util.DisplayMetrics;
+import android.view.HapticFeedbackConstants;
+import android.view.LayoutInflater;
+import android.view.Menu;
+import android.view.MenuInflater;
+import android.view.MenuItem;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+import android.widget.LinearLayout;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.appcompat.view.menu.MenuItemImpl;
+import androidx.core.content.ContextCompat;
+import androidx.core.content.res.ResourcesCompat;
+import androidx.core.graphics.drawable.DrawableCompat;
+import androidx.fragment.app.Fragment;
+import androidx.recyclerview.widget.ItemTouchHelper;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.LinearSmoothScroller;
+import androidx.recyclerview.widget.RecyclerView;
+import androidx.swiperefreshlayout.widget.SwipeRefreshLayout;
+import androidx.transition.AutoTransition;
+import androidx.transition.TransitionManager;
+
+import com.bumptech.glide.Glide;
+import com.bumptech.glide.RequestManager;
+import com.evernote.android.state.State;
+import com.google.android.material.dialog.MaterialAlertDialogBuilder;
+import com.livefront.bridge.Bridge;
+
+import org.greenrobot.eventbus.EventBus;
+import org.greenrobot.eventbus.Subscribe;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.Locale;
+import java.util.Map;
+import java.util.concurrent.Executor;
+
+import javax.inject.Inject;
+import javax.inject.Named;
+
+import butterknife.BindView;
+import butterknife.ButterKnife;
+import im.ene.toro.exoplayer.ExoCreator;
+import im.ene.toro.media.PlaybackInfo;
+import im.ene.toro.media.VolumeInfo;
+import ml.docilealligator.infinityforreddit.DeleteThing;
+import ml.docilealligator.infinityforreddit.Flair;
+import ml.docilealligator.infinityforreddit.FragmentCommunicator;
+import ml.docilealligator.infinityforreddit.Infinity;
+import ml.docilealligator.infinityforreddit.R;
+import ml.docilealligator.infinityforreddit.RedditDataRoomDatabase;
+import ml.docilealligator.infinityforreddit.SaveThing;
+import ml.docilealligator.infinityforreddit.SortType;
+import ml.docilealligator.infinityforreddit.activities.CommentActivity;
+import ml.docilealligator.infinityforreddit.activities.EditPostActivity;
+import ml.docilealligator.infinityforreddit.activities.GiveAwardActivity;
+import ml.docilealligator.infinityforreddit.activities.ReportActivity;
+import ml.docilealligator.infinityforreddit.activities.SubmitCrosspostActivity;
+import ml.docilealligator.infinityforreddit.activities.ViewPostDetailActivity;
+import ml.docilealligator.infinityforreddit.adapters.CommentAndPostRecyclerViewAdapter;
+import ml.docilealligator.infinityforreddit.apis.RedditAPI;
+import ml.docilealligator.infinityforreddit.bottomsheetfragments.FlairBottomSheetFragment;
+import ml.docilealligator.infinityforreddit.bottomsheetfragments.PostCommentSortTypeBottomSheetFragment;
+import ml.docilealligator.infinityforreddit.comment.Comment;
+import ml.docilealligator.infinityforreddit.comment.FetchComment;
+import ml.docilealligator.infinityforreddit.comment.FetchRemovedComment;
+import ml.docilealligator.infinityforreddit.comment.ParseComment;
+import ml.docilealligator.infinityforreddit.customtheme.CustomThemeWrapper;
+import ml.docilealligator.infinityforreddit.customviews.CustomToroContainer;
+import ml.docilealligator.infinityforreddit.events.ChangeNSFWBlurEvent;
+import ml.docilealligator.infinityforreddit.events.ChangeNetworkStatusEvent;
+import ml.docilealligator.infinityforreddit.events.ChangeSpoilerBlurEvent;
+import ml.docilealligator.infinityforreddit.events.PostUpdateEventToDetailActivity;
+import ml.docilealligator.infinityforreddit.events.PostUpdateEventToPostList;
+import ml.docilealligator.infinityforreddit.message.ReadMessage;
+import ml.docilealligator.infinityforreddit.post.FetchPost;
+import ml.docilealligator.infinityforreddit.post.FetchRemovedPost;
+import ml.docilealligator.infinityforreddit.post.HidePost;
+import ml.docilealligator.infinityforreddit.post.ParsePost;
+import ml.docilealligator.infinityforreddit.post.Post;
+import ml.docilealligator.infinityforreddit.subreddit.FetchSubredditData;
+import ml.docilealligator.infinityforreddit.subreddit.SubredditData;
+import ml.docilealligator.infinityforreddit.utils.APIUtils;
+import ml.docilealligator.infinityforreddit.utils.SharedPreferencesUtils;
+import ml.docilealligator.infinityforreddit.utils.Utils;
+import retrofit2.Call;
+import retrofit2.Callback;
+import retrofit2.Response;
+import retrofit2.Retrofit;
+
+import static im.ene.toro.media.PlaybackInfo.INDEX_UNSET;
+import static im.ene.toro.media.PlaybackInfo.TIME_UNSET;
+import static ml.docilealligator.infinityforreddit.activities.CommentActivity.RETURN_EXTRA_COMMENT_DATA_KEY;
+import static ml.docilealligator.infinityforreddit.activities.CommentActivity.WRITE_COMMENT_REQUEST_CODE;
+
+public class ViewPostDetailFragment extends Fragment implements FragmentCommunicator {
+
+    public static final String EXTRA_POST_DATA = "EPD";
+    public static final String EXTRA_POST_ID = "EPI";
+    public static final String EXTRA_SINGLE_COMMENT_ID = "ESCI";
+    public static final String EXTRA_MESSAGE_FULLNAME = "EMF";
+    public static final String EXTRA_POST_LIST_POSITION = "EPLP";
+    private static final int EDIT_POST_REQUEST_CODE = 2;
+
+    @BindView(R.id.swipe_refresh_layout_view_post_detail_fragment)
+    SwipeRefreshLayout mSwipeRefreshLayout;
+    @BindView(R.id.recycler_view_view_post_detail_fragment)
+    CustomToroContainer mRecyclerView;
+    @BindView(R.id.fetch_post_info_linear_layout_view_post_detail_fragment)
+    LinearLayout mFetchPostInfoLinearLayout;
+    @BindView(R.id.fetch_post_info_image_view_view_post_detail_fragment)
+    ImageView mFetchPostInfoImageView;
+    @BindView(R.id.fetch_post_info_text_view_view_post_detail_fragment)
+    TextView mFetchPostInfoTextView;
+    @Inject
+    @Named("no_oauth")
+    Retrofit mRetrofit;
+    @Inject
+    @Named("pushshift")
+    Retrofit pushshiftRetrofit;
+    @Inject
+    @Named("oauth")
+    Retrofit mOauthRetrofit;
+    @Inject
+    @Named("gfycat")
+    Retrofit mGfycatRetrofit;
+    @Inject
+    @Named("redgifs")
+    Retrofit mRedgifsRetrofit;
+    @Inject
+    RedditDataRoomDatabase mRedditDataRoomDatabase;
+    @Inject
+    @Named("default")
+    SharedPreferences mSharedPreferences;
+    @Inject
+    @Named("sort_type")
+    SharedPreferences mSortTypeSharedPreferences;
+    @Inject
+    @Named("nsfw_and_spoiler")
+    SharedPreferences mNsfwAndSpoilerSharedPreferences;
+    @Inject
+    @Named("current_account")
+    SharedPreferences mCurrentAccountSharedPreferences;
+    @Inject
+    CustomThemeWrapper mCustomThemeWrapper;
+    @Inject
+    ExoCreator mExoCreator;
+    @Inject
+    Executor mExecutor;
+    @State
+    Post mPost;
+    @State
+    boolean isLoadingMoreChildren = false;
+    @State
+    boolean isRefreshing = false;
+    @State
+    boolean isSingleCommentThreadMode = false;
+    @State
+    ArrayList<Comment> comments;
+    @State
+    ArrayList<String> children;
+    @State
+    int mChildrenStartingIndex = 0;
+    @State
+    boolean loadMoreChildrenSuccess = true;
+    @State
+    boolean hasMoreChildren;
+    @State
+    boolean isFetchingComments = false;
+    @State
+    String mMessageFullname;
+    @State
+    String sortType;
+    @State
+    boolean mRespectSubredditRecommendedSortType;
+    private ViewPostDetailActivity activity;
+    private RequestManager mGlide;
+    private Locale mLocale;
+    private Menu mMenu;
+    private String mAccessToken;
+    private String mAccountName;
+    private int postListPosition = -1;
+    private String mSingleCommentId;
+    private boolean showToast = false;
+    private boolean isSortingComments = false;
+    private boolean mIsSmoothScrolling = false;
+    private boolean mLockFab;
+    private boolean mSwipeUpToHideFab;
+    private boolean mExpandChildren;
+    private int mWindowWidth;
+    private LinearLayoutManager mLinearLayoutManager;
+    private CommentAndPostRecyclerViewAdapter mAdapter;
+    private RecyclerView.SmoothScroller mSmoothScroller;
+    private Drawable mSavedIcon;
+    private Drawable mUnsavedIcon;
+    private ColorDrawable backgroundSwipeRight;
+    private ColorDrawable backgroundSwipeLeft;
+    private Drawable drawableSwipeRight;
+    private Drawable drawableSwipeLeft;
+    private int swipeLeftAction;
+    private int swipeRightAction;
+    private float swipeActionThreshold;
+    private ItemTouchHelper touchHelper;
+
+    public ViewPostDetailFragment() {
+        // Required empty public constructor
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        // Inflate the layout for this fragment
+        View rootView = inflater.inflate(R.layout.fragment_view_post_detail, container, false);
+
+        ((Infinity) activity.getApplication()).getAppComponent().inject(this);
+
+        setHasOptionsMenu(true);
+
+        Bridge.restoreInstanceState(this, savedInstanceState);
+
+        ButterKnife.bind(this, rootView);
+
+        EventBus.getDefault().register(this);
+
+        applyTheme();
+
+        mAccessToken = mCurrentAccountSharedPreferences.getString(SharedPreferencesUtils.ACCESS_TOKEN, null);
+        mAccountName = mCurrentAccountSharedPreferences.getString(SharedPreferencesUtils.ACCOUNT_NAME, null);
+
+        mSavedIcon = getMenuItemIcon(R.drawable.ic_bookmark_toolbar_24dp);
+        mUnsavedIcon = getMenuItemIcon(R.drawable.ic_bookmark_border_toolbar_24dp);
+
+        if (activity != null && activity.isImmersiveInterface()) {
+            mRecyclerView.setPadding(0, 0, 0, activity.getNavBarHeight() + mRecyclerView.getPaddingBottom());
+            showToast = true;
+        }
+
+        DisplayMetrics displayMetrics = new DisplayMetrics();
+        activity.getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);
+        mWindowWidth = displayMetrics.widthPixels;
+
+        mLockFab = mSharedPreferences.getBoolean(SharedPreferencesUtils.LOCK_JUMP_TO_NEXT_TOP_LEVEL_COMMENT_BUTTON, false);
+        mSwipeUpToHideFab = mSharedPreferences.getBoolean(SharedPreferencesUtils.SWIPE_UP_TO_HIDE_JUMP_TO_NEXT_TOP_LEVEL_COMMENT_BUTTON, false);
+        mExpandChildren = !mSharedPreferences.getBoolean(SharedPreferencesUtils.SHOW_TOP_LEVEL_COMMENTS_FIRST, false);
+        if (savedInstanceState == null) {
+            mRespectSubredditRecommendedSortType = mSharedPreferences.getBoolean(SharedPreferencesUtils.RESPECT_SUBREDDIT_RECOMMENDED_COMMENT_SORT_TYPE, false);
+        }
+
+        mGlide = Glide.with(this);
+        Resources resources = getResources();
+        mLocale = getResources().getConfiguration().locale;
+
+        mLinearLayoutManager = new LinearLayoutManager(activity);
+        mRecyclerView.setLayoutManager(mLinearLayoutManager);
+
+        if (children != null && children.size() > 0) {
+            mRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
+                @Override
+                public void onScrolled(@NonNull RecyclerView recyclerView, int dx, int dy) {
+                    super.onScrolled(recyclerView, dx, dy);
+                    if (!mIsSmoothScrolling && !mLockFab) {
+                        if (!recyclerView.canScrollVertically(1)) {
+                            activity.hideFab();
+                        } else {
+                            if (dy > 0) {
+                                if (mSwipeUpToHideFab) {
+                                    activity.showFab();
+                                } else {
+                                    activity.hideFab();
+                                }
+                            } else {
+                                if (mSwipeUpToHideFab) {
+                                    activity.hideFab();
+                                } else {
+                                    activity.showFab();
+                                }
+                            }
+                        }
+                    }
+
+                    if (!isLoadingMoreChildren && loadMoreChildrenSuccess) {
+                        int visibleItemCount = mLinearLayoutManager.getChildCount();
+                        int totalItemCount = mLinearLayoutManager.getItemCount();
+                        int firstVisibleItemPosition = mLinearLayoutManager.findFirstVisibleItemPosition();
+
+                        if ((visibleItemCount + firstVisibleItemPosition >= totalItemCount) && firstVisibleItemPosition >= 0) {
+                            fetchMoreComments();
+                        }
+                    }
+                }
+
+                @Override
+                public void onScrollStateChanged(@NonNull RecyclerView recyclerView, int newState) {
+                    if (newState == RecyclerView.SCROLL_STATE_IDLE) {
+                        mIsSmoothScrolling = false;
+                    }
+                }
+            });
+        } else {
+            mRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
+                @Override
+                public void onScrolled(@NonNull RecyclerView recyclerView, int dx, int dy) {
+                    super.onScrolled(recyclerView, dx, dy);
+                    if (!mIsSmoothScrolling && !mLockFab) {
+                        if (!recyclerView.canScrollVertically(1)) {
+                            activity.hideFab();
+                        } else {
+                            if (dy > 0) {
+                                if (mSwipeUpToHideFab) {
+                                    activity.showFab();
+                                } else {
+                                    activity.hideFab();
+                                }
+                            } else {
+                                if (mSwipeUpToHideFab) {
+                                    activity.hideFab();
+                                } else {
+                                    activity.showFab();
+                                }
+                            }
+                        }
+                    }
+                }
+
+                @Override
+                public void onScrollStateChanged(@NonNull RecyclerView recyclerView, int newState) {
+                    if (newState == RecyclerView.SCROLL_STATE_IDLE) {
+                        mIsSmoothScrolling = false;
+                    }
+                }
+            });
+        }
+
+        boolean enableSwipeAction = mSharedPreferences.getBoolean(SharedPreferencesUtils.ENABLE_SWIPE_ACTION, false);
+        boolean vibrateWhenActionTriggered = mSharedPreferences.getBoolean(SharedPreferencesUtils.VIBRATE_WHEN_ACTION_TRIGGERED, true);
+        swipeActionThreshold = Float.parseFloat(mSharedPreferences.getString(SharedPreferencesUtils.SWIPE_ACTION_THRESHOLD, "0.3"));
+        swipeRightAction = Integer.parseInt(mSharedPreferences.getString(SharedPreferencesUtils.SWIPE_RIGHT_ACTION, "1"));
+        swipeLeftAction = Integer.parseInt(mSharedPreferences.getString(SharedPreferencesUtils.SWIPE_LEFT_ACTION, "0"));
+        initializeSwipeActionDrawable();
+        touchHelper = new ItemTouchHelper(new ItemTouchHelper.Callback() {
+            boolean exceedThreshold = false;
+
+            @Override
+            public int getMovementFlags(@NonNull RecyclerView recyclerView, @NonNull RecyclerView.ViewHolder viewHolder) {
+                if (!(viewHolder instanceof CommentAndPostRecyclerViewAdapter.CommentViewHolder)) {
+                    return makeMovementFlags(0, 0);
+                }
+                int swipeFlags = ItemTouchHelper.START | ItemTouchHelper.END;
+                return makeMovementFlags(0, swipeFlags);
+            }
+
+            @Override
+            public boolean onMove(@NonNull RecyclerView recyclerView, @NonNull RecyclerView.ViewHolder viewHolder, @NonNull RecyclerView.ViewHolder target) {
+                return false;
+            }
+
+            @Override
+            public boolean isItemViewSwipeEnabled() {
+                return true;
+            }
+
+            @Override
+            public void onSwiped(@NonNull RecyclerView.ViewHolder viewHolder, int direction) {
+                if (touchHelper != null) {
+                    touchHelper.attachToRecyclerView(null);
+                    touchHelper.attachToRecyclerView(mRecyclerView);
+                    if (mAdapter != null) {
+                        mAdapter.onItemSwipe(viewHolder, direction, swipeLeftAction, swipeRightAction);
+                    }
+                }
+            }
+
+            @Override
+            public void onChildDraw(@NonNull Canvas c, @NonNull RecyclerView recyclerView, @NonNull RecyclerView.ViewHolder viewHolder, float dX, float dY, int actionState, boolean isCurrentlyActive) {
+                super.onChildDraw(c, recyclerView, viewHolder, dX, dY, actionState, isCurrentlyActive);
+
+                View itemView = viewHolder.itemView;
+                int horizontalOffset = (int) Utils.convertDpToPixel(16, activity);
+                if (dX > 0) {
+                    if (dX > (itemView.getRight() - itemView.getLeft()) * swipeActionThreshold) {
+                        if (!exceedThreshold) {
+                            exceedThreshold = true;
+                            if (vibrateWhenActionTriggered) {
+                                viewHolder.itemView.setHapticFeedbackEnabled(true);
+                                viewHolder.itemView.performHapticFeedback(HapticFeedbackConstants.VIRTUAL_KEY, HapticFeedbackConstants.FLAG_IGNORE_GLOBAL_SETTING);
+                            }
+                        }
+                        backgroundSwipeRight.setBounds(0, itemView.getTop(), itemView.getRight(), itemView.getBottom());
+                    } else {
+                        exceedThreshold = false;
+                        backgroundSwipeRight.setBounds(0, 0, 0, 0);
+                    }
+
+                    drawableSwipeRight.setBounds(itemView.getLeft() + ((int) dX) - horizontalOffset - drawableSwipeRight.getIntrinsicWidth(),
+                            (itemView.getBottom() + itemView.getTop() - drawableSwipeRight.getIntrinsicHeight()) / 2,
+                            itemView.getLeft() + ((int) dX) - horizontalOffset,
+                            (itemView.getBottom() + itemView.getTop() + drawableSwipeRight.getIntrinsicHeight()) / 2);
+                    backgroundSwipeRight.draw(c);
+                    drawableSwipeRight.draw(c);
+                } else if (dX < 0) {
+                    if (-dX > (itemView.getRight() - itemView.getLeft()) * swipeActionThreshold) {
+                        if (!exceedThreshold) {
+                            exceedThreshold = true;
+                            if (vibrateWhenActionTriggered) {
+                                viewHolder.itemView.setHapticFeedbackEnabled(true);
+                                viewHolder.itemView.performHapticFeedback(HapticFeedbackConstants.VIRTUAL_KEY, HapticFeedbackConstants.FLAG_IGNORE_GLOBAL_SETTING);
+                            }
+                        }
+                        backgroundSwipeLeft.setBounds(0, itemView.getTop(), itemView.getRight(), itemView.getBottom());
+                    } else {
+                        exceedThreshold = false;
+                        backgroundSwipeLeft.setBounds(0, 0, 0, 0);
+                    }
+                    drawableSwipeLeft.setBounds(itemView.getRight() + ((int) dX) + horizontalOffset,
+                            (itemView.getBottom() + itemView.getTop() - drawableSwipeLeft.getIntrinsicHeight()) / 2,
+                            itemView.getRight() + ((int) dX) + horizontalOffset + drawableSwipeLeft.getIntrinsicWidth(),
+                            (itemView.getBottom() + itemView.getTop() + drawableSwipeLeft.getIntrinsicHeight()) / 2);
+                    backgroundSwipeLeft.draw(c);
+                    drawableSwipeLeft.draw(c);
+                }
+            }
+
+            @Override
+            public float getSwipeThreshold(@NonNull RecyclerView.ViewHolder viewHolder) {
+                return swipeActionThreshold;
+            }
+        });
+
+        if (enableSwipeAction) {
+            touchHelper.attachToRecyclerView(mRecyclerView);
+        }
+
+        mSwipeRefreshLayout.setOnRefreshListener(() -> refresh(true, true));
+
+        mSmoothScroller = new LinearSmoothScroller(activity) {
+            @Override
+            protected int getVerticalSnapPreference() {
+                return LinearSmoothScroller.SNAP_TO_START;
+            }
+        };
+
+        mSingleCommentId = getArguments().getString(EXTRA_SINGLE_COMMENT_ID);
+        if (savedInstanceState == null) {
+            if (mSingleCommentId != null) {
+                isSingleCommentThreadMode = true;
+            }
+            mMessageFullname = getArguments().getString(EXTRA_MESSAGE_FULLNAME);
+
+            if (!mRespectSubredditRecommendedSortType || isSingleCommentThreadMode) {
+                sortType = mSortTypeSharedPreferences.getString(SharedPreferencesUtils.SORT_TYPE_POST_COMMENT, SortType.Type.BEST.value.toUpperCase());
+                if (sortType != null) {
+                    activity.setTitle(new SortType(SortType.Type.valueOf(sortType)).getType().fullName);
+                    sortType = sortType.toLowerCase();
+                }
+            }
+        } else {
+            if (sortType != null) {
+                activity.setTitle(new SortType(SortType.Type.valueOf(sortType.toUpperCase())).getType().fullName);
+            }
+        }
+
+        if (getArguments().containsKey(EXTRA_POST_LIST_POSITION)) {
+            postListPosition = getArguments().getInt(EXTRA_POST_LIST_POSITION, -1);
+        }
+
+        bindView();
+
+        return rootView;
+    }
+
+    private void bindView() {
+        if (mAccessToken != null && mMessageFullname != null) {
+            ReadMessage.readMessage(mOauthRetrofit, mAccessToken, mMessageFullname, new ReadMessage.ReadMessageListener() {
+                @Override
+                public void readSuccess() {
+                    mMessageFullname = null;
+                }
+
+                @Override
+                public void readFailed() {
+
+                }
+            });
+        }
+
+        if (mPost == null) {
+            mPost = getArguments().getParcelable(EXTRA_POST_DATA);
+        }
+
+        if (mPost == null) {
+            fetchPostAndCommentsById(getArguments().getString(EXTRA_POST_ID));
+        } else {
+            setupMenu();
+
+            mAdapter = new CommentAndPostRecyclerViewAdapter(activity,
+                    this, mExecutor, mCustomThemeWrapper, mRetrofit, mOauthRetrofit, mGfycatRetrofit,
+                    mRedgifsRetrofit, mRedditDataRoomDatabase, mGlide,
+                    mWindowWidth, mAccessToken, mAccountName, mPost, mLocale, mSingleCommentId,
+                    isSingleCommentThreadMode, mSharedPreferences, mNsfwAndSpoilerSharedPreferences, mExoCreator,
+                    new CommentAndPostRecyclerViewAdapter.CommentRecyclerViewAdapterCallback() {
+                        @Override
+                        public void updatePost(Post post) {
+                            EventBus.getDefault().post(new PostUpdateEventToPostList(mPost, postListPosition));
+                        }
+
+                        @Override
+                        public void retryFetchingComments() {
+                            fetchCommentsRespectRecommendedSort(false);
+                        }
+
+                        @Override
+                        public void retryFetchingMoreComments() {
+                            isLoadingMoreChildren = false;
+                            loadMoreChildrenSuccess = true;
+
+                            fetchMoreComments();
+                        }
+                    });
+            mRecyclerView.setAdapter(mAdapter);
+
+            if (comments == null) {
+                fetchCommentsRespectRecommendedSort(false);
+            } else {
+                if (isRefreshing) {
+                    isRefreshing = false;
+                    refresh(true, true);
+                } else if (isFetchingComments) {
+                    fetchCommentsRespectRecommendedSort(false);
+                } else {
+                    mAdapter.addComments(comments, hasMoreChildren);
+                    if (isLoadingMoreChildren) {
+                        isLoadingMoreChildren = false;
+                        fetchMoreComments();
+                    }
+                }
+            }
+        }
+
+        mRecyclerView.setCacheManager(mAdapter);
+        mRecyclerView.setPlayerInitializer(order -> {
+            VolumeInfo volumeInfo = new VolumeInfo(true, 0f);
+            return new PlaybackInfo(INDEX_UNSET, TIME_UNSET, volumeInfo);
+        });
+    }
+
+    private void setupMenu() {
+        if (mMenu != null) {
+            MenuItem saveItem = mMenu.findItem(R.id.action_save_view_post_detail_fragment);
+            MenuItem hideItem = mMenu.findItem(R.id.action_hide_view_post_detail_fragment);
+
+            mMenu.findItem(R.id.action_comment_view_post_detail_fragment).setVisible(true);
+            mMenu.findItem(R.id.action_sort_view_post_detail_fragment).setVisible(true);
+
+            if (mAccessToken != null) {
+                if (mPost.isSaved()) {
+                    saveItem.setVisible(true);
+                    saveItem.setIcon(mSavedIcon);
+                } else {
+                    saveItem.setVisible(true);
+                    saveItem.setIcon(mUnsavedIcon);
+                }
+
+                if (mPost.isHidden()) {
+                    hideItem.setVisible(true);
+                    hideItem.setTitle(R.string.action_unhide_post);
+                } else {
+                    hideItem.setVisible(true);
+                    hideItem.setTitle(R.string.action_hide_post);
+                }
+            } else {
+                saveItem.setVisible(false);
+                hideItem.setVisible(false);
+            }
+
+            if (mPost.getAuthor().equals(mAccountName)) {
+                if (mPost.getPostType() == Post.TEXT_TYPE) {
+                    mMenu.findItem(R.id.action_edit_view_post_detail_fragment).setVisible(true);
+                }
+                mMenu.findItem(R.id.action_delete_view_post_detail_fragment).setVisible(true);
+
+                MenuItem nsfwItem = mMenu.findItem(R.id.action_nsfw_view_post_detail_fragment);
+                nsfwItem.setVisible(true);
+                if (mPost.isNSFW()) {
+                    nsfwItem.setTitle(R.string.action_unmark_nsfw);
+                } else {
+                    nsfwItem.setTitle(R.string.action_mark_nsfw);
+                }
+
+                MenuItem spoilerItem = mMenu.findItem(R.id.action_spoiler_view_post_detail_fragment);
+                spoilerItem.setVisible(true);
+                if (mPost.isSpoiler()) {
+                    spoilerItem.setTitle(R.string.action_unmark_spoiler);
+                } else {
+                    spoilerItem.setTitle(R.string.action_mark_spoiler);
+                }
+
+                mMenu.findItem(R.id.action_edit_flair_view_post_detail_fragment).setVisible(true);
+            }
+
+            mMenu.findItem(R.id.action_view_crosspost_parent_view_post_detail_fragment).setVisible(mPost.getCrosspostParentId() != null);
+
+            if ("[deleted]".equals(mPost.getAuthor()) ||
+                    "[deleted]".equals(mPost.getSelfText()) ||
+                    "[removed]".equals(mPost.getSelfText())
+            ) {
+                mMenu.findItem(R.id.action_see_removed_view_post_detail_fragment).setVisible(true);
+            }
+        }
+    }
+
+    private void initializeSwipeActionDrawable() {
+        if (swipeRightAction == SharedPreferencesUtils.SWIPE_ACITON_DOWNVOTE) {
+            backgroundSwipeRight = new ColorDrawable(mCustomThemeWrapper.getDownvoted());
+            drawableSwipeRight = ResourcesCompat.getDrawable(getResources(), R.drawable.ic_arrow_downward_black_24dp, null);
+        } else {
+            backgroundSwipeRight = new ColorDrawable(mCustomThemeWrapper.getUpvoted());
+            drawableSwipeRight = ResourcesCompat.getDrawable(getResources(), R.drawable.ic_arrow_upward_black_24dp, null);
+        }
+
+        if (swipeLeftAction == SharedPreferencesUtils.SWIPE_ACITON_UPVOTE) {
+            backgroundSwipeLeft = new ColorDrawable(mCustomThemeWrapper.getUpvoted());
+            drawableSwipeLeft = ResourcesCompat.getDrawable(getResources(), R.drawable.ic_arrow_upward_black_24dp, null);
+        } else {
+            backgroundSwipeLeft = new ColorDrawable(mCustomThemeWrapper.getDownvoted());
+            drawableSwipeLeft = ResourcesCompat.getDrawable(getResources(), R.drawable.ic_arrow_downward_black_24dp, null);
+        }
+    }
+
+    private Drawable getMenuItemIcon(int drawableId) {
+        Drawable icon = ContextCompat.getDrawable(activity, drawableId);
+        if (icon != null) {
+            DrawableCompat.setTint(icon, mCustomThemeWrapper.getToolbarPrimaryTextAndIconColor());
+        }
+
+        return icon;
+    }
+
+    public void addComment(Comment comment) {
+        if (mAdapter != null) {
+            mAdapter.addComment(comment);
+        }
+    }
+
+    public void addChildComment(Comment comment, String parentFullname, int parentPosition) {
+        if (mAdapter != null) {
+            mAdapter.addChildComment(comment, parentFullname, parentPosition);
+        }
+    }
+
+    public void editComment(String commentAuthor, String commentContentMarkdown, int position) {
+        if (mAdapter != null) {
+            mAdapter.editComment(commentAuthor,
+                    commentContentMarkdown,
+                    position);
+        }
+    }
+
+    public void awardGiven(String awardsHTML, int awardCount, int position) {
+        if (mAdapter != null) {
+            mAdapter.giveAward(awardsHTML, awardCount, position);
+        }
+    }
+
+    public void changeFlair(Flair flair) {
+        Map<String, String> params = new HashMap<>();
+        params.put(APIUtils.API_TYPE_KEY, APIUtils.API_TYPE_JSON);
+        params.put(APIUtils.FLAIR_TEMPLATE_ID_KEY, flair.getId());
+        params.put(APIUtils.LINK_KEY, mPost.getFullName());
+        params.put(APIUtils.TEXT_KEY, flair.getText());
+
+        mOauthRetrofit.create(RedditAPI.class).selectFlair(mPost.getSubredditNamePrefixed(),
+                APIUtils.getOAuthHeader(mAccessToken), params).enqueue(new Callback<String>() {
+            @Override
+            public void onResponse(@NonNull Call<String> call, @NonNull Response<String> response) {
+                if (response.isSuccessful()) {
+                    refresh(true, false);
+                    showMessage(R.string.update_flair_success);
+                } else {
+                    showMessage(R.string.update_flair_failed);
+                }
+            }
+
+            @Override
+            public void onFailure(@NonNull Call<String> call, @NonNull Throwable t) {
+                showMessage(R.string.update_flair_failed);
+            }
+        });
+    }
+
+    public void changeSortType(SortType sortType) {
+        mFetchPostInfoLinearLayout.setVisibility(View.GONE);
+        mGlide.clear(mFetchPostInfoImageView);
+        mChildrenStartingIndex = 0;
+        if (children != null) {
+            children.clear();
+        }
+        this.sortType = sortType.getType().value;
+        if (!mSharedPreferences.getBoolean(SharedPreferencesUtils.RESPECT_SUBREDDIT_RECOMMENDED_COMMENT_SORT_TYPE, false)) {
+            mSortTypeSharedPreferences.edit().putString(SharedPreferencesUtils.SORT_TYPE_POST_COMMENT, sortType.getType().name()).apply();
+        }
+        fetchCommentsRespectRecommendedSort(false, false, sortType.getType().value);
+    }
+
+    public void goToTop() {
+        if (mLinearLayoutManager != null) {
+            mLinearLayoutManager.scrollToPositionWithOffset(0, 0);
+        }
+    }
+
+    @Override
+    public void onCreateOptionsMenu(@NonNull Menu menu, @NonNull MenuInflater inflater) {
+        inflater.inflate(R.menu.view_post_detail_fragment, menu);
+        applyMenuItemTheme(menu);
+        mMenu = menu;
+        if (mPost != null) {
+            setupMenu();
+        }
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(@NonNull MenuItem item) {
+        int itemId = item.getItemId();
+        if (itemId == R.id.action_refresh_view_post_detail_fragment) {
+            refresh(true, true);
+            return true;
+        } else if (itemId == R.id.action_comment_view_post_detail_fragment) {
+            if (mPost != null) {
+                if (mPost.isArchived()) {
+                    showMessage(R.string.archived_post_reply_unavailable);
+                    return true;
+                }
+
+                if (mPost.isLocked()) {
+                    showMessage(R.string.locked_post_comment_unavailable);
+                    return true;
+                }
+
+                if (mAccessToken == null) {
+                    showMessage(R.string.login_first);
+                    return true;
+                }
+
+                Intent intent = new Intent(activity, CommentActivity.class);
+                intent.putExtra(CommentActivity.EXTRA_COMMENT_PARENT_TEXT_MARKDOWN_KEY, mPost.getTitle());
+                intent.putExtra(CommentActivity.EXTRA_COMMENT_PARENT_BODY_MARKDOWN_KEY, mPost.getSelfText());
+                intent.putExtra(CommentActivity.EXTRA_COMMENT_PARENT_BODY_KEY, mPost.getSelfTextPlain());
+                intent.putExtra(CommentActivity.EXTRA_PARENT_FULLNAME_KEY, mPost.getFullName());
+                intent.putExtra(CommentActivity.EXTRA_PARENT_DEPTH_KEY, 0);
+                intent.putExtra(CommentActivity.EXTRA_IS_REPLYING_KEY, false);
+                startActivityForResult(intent, WRITE_COMMENT_REQUEST_CODE);
+            }
+            return true;
+        } else if (itemId == R.id.action_save_view_post_detail_fragment) {
+            if (mPost != null && mAccessToken != null) {
+                if (mPost.isSaved()) {
+                    item.setIcon(mUnsavedIcon);
+                    SaveThing.unsaveThing(mOauthRetrofit, mAccessToken, mPost.getFullName(),
+                            new SaveThing.SaveThingListener() {
+                                @Override
+                                public void success() {
+                                    mPost.setSaved(false);
+                                    item.setIcon(mUnsavedIcon);
+                                    showMessage(R.string.post_unsaved_success);
+                                    EventBus.getDefault().post(new PostUpdateEventToPostList(mPost, postListPosition));
+                                }
+
+                                @Override
+                                public void failed() {
+                                    mPost.setSaved(true);
+                                    item.setIcon(mSavedIcon);
+                                    showMessage(R.string.post_unsaved_failed);
+                                    EventBus.getDefault().post(new PostUpdateEventToPostList(mPost, postListPosition));
+                                }
+                            });
+                } else {
+                    item.setIcon(mSavedIcon);
+                    SaveThing.saveThing(mOauthRetrofit, mAccessToken, mPost.getFullName(),
+                            new SaveThing.SaveThingListener() {
+                                @Override
+                                public void success() {
+                                    mPost.setSaved(true);
+                                    item.setIcon(mSavedIcon);
+                                    showMessage(R.string.post_saved_success);
+                                    EventBus.getDefault().post(new PostUpdateEventToPostList(mPost, postListPosition));
+                                }
+
+                                @Override
+                                public void failed() {
+                                    mPost.setSaved(false);
+                                    item.setIcon(mUnsavedIcon);
+                                    showMessage(R.string.post_saved_failed);
+                                    EventBus.getDefault().post(new PostUpdateEventToPostList(mPost, postListPosition));
+                                }
+                            });
+                }
+            }
+            return true;
+        } else if (itemId == R.id.action_sort_view_post_detail_fragment) {
+            if (mPost != null) {
+                PostCommentSortTypeBottomSheetFragment postCommentSortTypeBottomSheetFragment = new PostCommentSortTypeBottomSheetFragment();
+                postCommentSortTypeBottomSheetFragment.show(activity.getSupportFragmentManager(), postCommentSortTypeBottomSheetFragment.getTag());
+            }
+            return true;
+        } else if (itemId == R.id.action_view_crosspost_parent_view_post_detail_fragment) {
+            Intent crosspostIntent = new Intent(activity, ViewPostDetailActivity.class);
+            crosspostIntent.putExtra(ViewPostDetailActivity.EXTRA_POST_ID, mPost.getCrosspostParentId());
+            startActivity(crosspostIntent);
+            return true;
+        } else if (itemId == R.id.action_hide_view_post_detail_fragment) {
+            if (mPost != null && mAccessToken != null) {
+                if (mPost.isHidden()) {
+                    item.setTitle(R.string.action_hide_post);
+
+                    HidePost.unhidePost(mOauthRetrofit, mAccessToken, mPost.getFullName(), new HidePost.HidePostListener() {
+                        @Override
+                        public void success() {
+                            mPost.setHidden(false);
+                            item.setTitle(R.string.action_hide_post);
+                            showMessage(R.string.post_unhide_success);
+                            EventBus.getDefault().post(new PostUpdateEventToPostList(mPost, postListPosition));
+                        }
+
+                        @Override
+                        public void failed() {
+                            mPost.setHidden(true);
+                            item.setTitle(R.string.action_unhide_post);
+                            showMessage(R.string.post_unhide_failed);
+                            EventBus.getDefault().post(new PostUpdateEventToPostList(mPost, postListPosition));
+                        }
+                    });
+                } else {
+                    item.setTitle(R.string.action_unhide_post);
+
+                    HidePost.hidePost(mOauthRetrofit, mAccessToken, mPost.getFullName(), new HidePost.HidePostListener() {
+                        @Override
+                        public void success() {
+                            mPost.setHidden(true);
+                            item.setTitle(R.string.action_unhide_post);
+                            showMessage(R.string.post_hide_success);
+                            EventBus.getDefault().post(new PostUpdateEventToPostList(mPost, postListPosition));
+                        }
+
+                        @Override
+                        public void failed() {
+                            mPost.setHidden(false);
+                            item.setTitle(R.string.action_hide_post);
+                            showMessage(R.string.post_hide_failed);
+                            EventBus.getDefault().post(new PostUpdateEventToPostList(mPost, postListPosition));
+                        }
+                    });
+                }
+            }
+            return true;
+        } else if (itemId == R.id.action_edit_view_post_detail_fragment) {
+            Intent editPostIntent = new Intent(activity, EditPostActivity.class);
+            editPostIntent.putExtra(EditPostActivity.EXTRA_FULLNAME, mPost.getFullName());
+            editPostIntent.putExtra(EditPostActivity.EXTRA_TITLE, mPost.getTitle());
+            editPostIntent.putExtra(EditPostActivity.EXTRA_CONTENT, mPost.getSelfText());
+            startActivityForResult(editPostIntent, EDIT_POST_REQUEST_CODE);
+            return true;
+        } else if (itemId == R.id.action_delete_view_post_detail_fragment) {
+            new MaterialAlertDialogBuilder(activity, R.style.MaterialAlertDialogTheme)
+                    .setTitle(R.string.delete_this_post)
+                    .setMessage(R.string.are_you_sure)
+                    .setPositiveButton(R.string.delete, (dialogInterface, i)
+                            -> DeleteThing.delete(mOauthRetrofit, mPost.getFullName(), mAccessToken, new DeleteThing.DeleteThingListener() {
+                        @Override
+                        public void deleteSuccess() {
+                            Toast.makeText(activity, R.string.delete_post_success, Toast.LENGTH_SHORT).show();
+                            activity.finish();
+                        }
+
+                        @Override
+                        public void deleteFailed() {
+                            showMessage(R.string.delete_post_failed);
+                        }
+                    }))
+                    .setNegativeButton(R.string.cancel, null)
+                    .show();
+            return true;
+        } else if (itemId == R.id.action_nsfw_view_post_detail_fragment) {
+            if (mPost.isNSFW()) {
+                unmarkNSFW();
+            } else {
+                markNSFW();
+            }
+            return true;
+        } else if (itemId == R.id.action_spoiler_view_post_detail_fragment) {
+            if (mPost.isSpoiler()) {
+                unmarkSpoiler();
+            } else {
+                markSpoiler();
+            }
+            return true;
+        } else if (itemId == R.id.action_edit_flair_view_post_detail_fragment) {
+            FlairBottomSheetFragment flairBottomSheetFragment = new FlairBottomSheetFragment();
+            Bundle bundle = new Bundle();
+            bundle.putString(FlairBottomSheetFragment.EXTRA_ACCESS_TOKEN, mAccessToken);
+            bundle.putString(FlairBottomSheetFragment.EXTRA_SUBREDDIT_NAME, mPost.getSubredditName());
+            flairBottomSheetFragment.setArguments(bundle);
+            flairBottomSheetFragment.show(activity.getSupportFragmentManager(), flairBottomSheetFragment.getTag());
+            return true;
+        } else if (itemId == R.id.action_give_award_view_post_detail_fragment) {
+            if (mAccessToken == null) {
+                Toast.makeText(activity, R.string.login_first, Toast.LENGTH_SHORT).show();
+                return true;
+            }
+
+            Intent giveAwardIntent = new Intent(activity, GiveAwardActivity.class);
+            giveAwardIntent.putExtra(GiveAwardActivity.EXTRA_THING_FULLNAME, mPost.getFullName());
+            giveAwardIntent.putExtra(GiveAwardActivity.EXTRA_ITEM_POSITION, 0);
+            activity.startActivityForResult(giveAwardIntent, ViewPostDetailActivity.GIVE_AWARD_REQUEST_CODE);
+            return true;
+        } else if (itemId == R.id.action_report_view_post_detail_fragment) {
+            if (mAccessToken == null) {
+                Toast.makeText(activity, R.string.login_first, Toast.LENGTH_SHORT).show();
+                return true;
+            }
+            Intent intent = new Intent(activity, ReportActivity.class);
+            intent.putExtra(ReportActivity.EXTRA_SUBREDDIT_NAME, mPost.getSubredditName());
+            intent.putExtra(ReportActivity.EXTRA_THING_FULLNAME, mPost.getFullName());
+            startActivity(intent);
+            return true;
+        } else if (itemId == R.id.action_see_removed_view_post_detail_fragment) {
+            showRemovedPost();
+            return true;
+        } else if (itemId == R.id.action_crosspost_view_post_detail_fragment) {
+            Intent submitCrosspostIntent = new Intent(activity, SubmitCrosspostActivity.class);
+            submitCrosspostIntent.putExtra(SubmitCrosspostActivity.EXTRA_POST, mPost);
+            startActivity(submitCrosspostIntent);
+            return true;
+        }
+        return false;
+    }
+
+    @Override
+    public void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
+        if (requestCode == WRITE_COMMENT_REQUEST_CODE) {
+            if (data != null && resultCode == Activity.RESULT_OK) {
+                if (data.hasExtra(RETURN_EXTRA_COMMENT_DATA_KEY)) {
+                    Comment comment = data.getParcelableExtra(RETURN_EXTRA_COMMENT_DATA_KEY);
+                    if (comment != null && comment.getDepth() == 0) {
+                        addComment(comment);
+                    } else {
+                        String parentFullname = data.getStringExtra(CommentActivity.EXTRA_PARENT_FULLNAME_KEY);
+                        int parentPosition = data.getIntExtra(CommentActivity.EXTRA_PARENT_POSITION_KEY, -1);
+                        if (parentFullname != null && parentPosition >= 0) {
+                            addChildComment(comment, parentFullname, parentPosition);
+                        }
+                    }
+                } else {
+                    Toast.makeText(activity, R.string.send_comment_failed, Toast.LENGTH_SHORT).show();
+                }
+            }
+        } else if (requestCode == EDIT_POST_REQUEST_CODE) {
+            if (resultCode == Activity.RESULT_OK) {
+                refresh(true, false);
+            }
+        }
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+        if (mAdapter != null && mRecyclerView != null) {
+            mRecyclerView.onWindowVisibilityChanged(View.VISIBLE);
+        }
+    }
+
+    @Override
+    public void onPause() {
+        super.onPause();
+        if (mAdapter != null && mRecyclerView != null) {
+            mRecyclerView.onWindowVisibilityChanged(View.GONE);
+        }
+    }
+
+    @Override
+    public void onSaveInstanceState(@NonNull Bundle outState) {
+        super.onSaveInstanceState(outState);
+        comments = mAdapter == null ? null : mAdapter.getVisibleComments();
+        Bridge.saveInstanceState(this, outState);
+    }
+
+    @Override
+    public void onDestroyView() {
+        super.onDestroyView();
+        Bridge.clear(this);
+    }
+
+    @SuppressLint("RestrictedApi")
+    protected boolean applyMenuItemTheme(Menu menu) {
+        if (mCustomThemeWrapper != null) {
+            int size = Math.min(menu.size(), 2);
+            for (int i = 0; i < size; i++) {
+                MenuItem item = menu.getItem(i);
+                if (((MenuItemImpl) item).requestsActionButton()) {
+                    Drawable drawable = item.getIcon();
+                    if (drawable != null) {
+                        DrawableCompat.setTint(drawable, mCustomThemeWrapper.getToolbarPrimaryTextAndIconColor());
+                        item.setIcon(drawable);
+                    }
+                }
+            }
+        }
+        return true;
+    }
+
+    private void fetchPostAndCommentsById(String subredditId) {
+        mFetchPostInfoLinearLayout.setVisibility(View.GONE);
+        mSwipeRefreshLayout.setRefreshing(true);
+        mGlide.clear(mFetchPostInfoImageView);
+
+        Call<String> postAndComments;
+        if (mAccessToken == null) {
+            if (isSingleCommentThreadMode && mSingleCommentId != null) {
+                postAndComments = mRetrofit.create(RedditAPI.class).getPostAndCommentsSingleThreadById(
+                        subredditId, mSingleCommentId, sortType);
+            } else {
+                postAndComments = mRetrofit.create(RedditAPI.class).getPostAndCommentsById(subredditId,
+                        sortType);
+            }
+        } else {
+            if (isSingleCommentThreadMode && mSingleCommentId != null) {
+                postAndComments = mOauthRetrofit.create(RedditAPI.class).getPostAndCommentsSingleThreadByIdOauth(subredditId,
+                        mSingleCommentId, sortType, APIUtils.getOAuthHeader(mAccessToken));
+            } else {
+                postAndComments = mOauthRetrofit.create(RedditAPI.class).getPostAndCommentsByIdOauth(subredditId,
+                        sortType, APIUtils.getOAuthHeader(mAccessToken));
+            }
+        }
+        postAndComments.enqueue(new Callback<String>() {
+            @Override
+            public void onResponse(@NonNull Call<String> call, @NonNull Response<String> response) {
+                mSwipeRefreshLayout.setRefreshing(false);
+
+                if (response.isSuccessful()) {
+                    ParsePost.parsePost(response.body(), new ParsePost.ParsePostListener() {
+                        @Override
+                        public void onParsePostSuccess(Post post) {
+                            mPost = post;
+
+                            setupMenu();
+
+                            mAdapter = new CommentAndPostRecyclerViewAdapter(activity,
+                                    ViewPostDetailFragment.this, mExecutor, mCustomThemeWrapper, mRetrofit, mOauthRetrofit, mGfycatRetrofit,
+                                    mRedgifsRetrofit, mRedditDataRoomDatabase, mGlide,
+                                    mWindowWidth, mAccessToken, mAccountName, mPost, mLocale,
+                                    mSingleCommentId, isSingleCommentThreadMode, mSharedPreferences,
+                                    mNsfwAndSpoilerSharedPreferences, mExoCreator,
+                                    new CommentAndPostRecyclerViewAdapter.CommentRecyclerViewAdapterCallback() {
+                                        @Override
+                                        public void updatePost(Post post) {
+                                            EventBus.getDefault().post(new PostUpdateEventToPostList(mPost, postListPosition));
+                                        }
+
+                                        @Override
+                                        public void retryFetchingComments() {
+                                            fetchCommentsRespectRecommendedSort(false);
+                                        }
+
+                                        @Override
+                                        public void retryFetchingMoreComments() {
+                                            isLoadingMoreChildren = false;
+                                            loadMoreChildrenSuccess = true;
+
+                                            fetchMoreComments();
+                                        }
+                                    });
+                            mRecyclerView.setAdapter(mAdapter);
+
+                            if (mRespectSubredditRecommendedSortType) {
+                                fetchCommentsRespectRecommendedSort(false);
+                            } else {
+                                ParseComment.parseComment(response.body(), new ArrayList<>(), mLocale,
+                                        mExpandChildren, new ParseComment.ParseCommentListener() {
+                                            @Override
+                                            public void onParseCommentSuccess(ArrayList<Comment> expandedComments, String parentId, ArrayList<String> moreChildrenFullnames) {
+                                                ViewPostDetailFragment.this.children = moreChildrenFullnames;
+
+                                                hasMoreChildren = children.size() != 0;
+                                                mAdapter.addComments(expandedComments, hasMoreChildren);
+
+                                                if (children.size() > 0) {
+                                                    mRecyclerView.clearOnScrollListeners();
+                                                    mRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
+                                                        @Override
+                                                        public void onScrolled(@NonNull RecyclerView recyclerView, int dx, int dy) {
+                                                            super.onScrolled(recyclerView, dx, dy);
+                                                            if (!mIsSmoothScrolling && !mLockFab) {
+                                                                if (!recyclerView.canScrollVertically(1)) {
+                                                                    activity.hideFab();
+                                                                } else {
+                                                                    if (dy > 0) {
+                                                                        if (mSwipeUpToHideFab) {
+                                                                            activity.showFab();
+                                                                        } else {
+                                                                            activity.hideFab();
+                                                                        }
+                                                                    } else {
+                                                                        if (mSwipeUpToHideFab) {
+                                                                            activity.hideFab();
+                                                                        } else {
+                                                                            activity.showFab();
+                                                                        }
+                                                                    }
+                                                                }
+                                                            }
+
+                                                            if (!isLoadingMoreChildren && loadMoreChildrenSuccess) {
+                                                                int visibleItemCount = mLinearLayoutManager.getChildCount();
+                                                                int totalItemCount = mLinearLayoutManager.getItemCount();
+                                                                int firstVisibleItemPosition = mLinearLayoutManager.findFirstVisibleItemPosition();
+
+                                                                if ((visibleItemCount + firstVisibleItemPosition >= totalItemCount) && firstVisibleItemPosition >= 0) {
+                                                                    fetchMoreComments();
+                                                                }
+                                                            }
+                                                        }
+
+                                                        @Override
+                                                        public void onScrollStateChanged(@NonNull RecyclerView recyclerView, int newState) {
+                                                            if (newState == RecyclerView.SCROLL_STATE_IDLE) {
+                                                                mIsSmoothScrolling = false;
+                                                            }
+                                                        }
+                                                    });
+                                                }
+                                            }
+
+                                            @Override
+                                            public void onParseCommentFailed() {
+                                                mAdapter.initiallyLoadCommentsFailed();
+                                            }
+                                        });
+                            }
+                        }
+
+                        @Override
+                        public void onParsePostFail() {
+                            showErrorView(subredditId);
+                        }
+                    });
+                } else {
+                    showErrorView(subredditId);
+                }
+            }
+
+            @Override
+            public void onFailure(@NonNull Call<String> call, @NonNull Throwable t) {
+                showErrorView(subredditId);
+            }
+        });
+    }
+
+    private void fetchCommentsRespectRecommendedSort(boolean changeRefreshState, boolean checkSortState, String sortType) {
+        if (mRespectSubredditRecommendedSortType && mPost != null) {
+            FetchSubredditData.fetchSubredditData(mRetrofit, mPost.getSubredditName(),
+                    new FetchSubredditData.FetchSubredditDataListener() {
+                        @Override
+                        public void onFetchSubredditDataSuccess(SubredditData subredditData, int nCurrentOnlineSubscribers) {
+                            if (subredditData.getSuggestedCommentSort() == null || subredditData.getSuggestedCommentSort().equals("null") || subredditData.getSuggestedCommentSort().equals("")) {
+                                mRespectSubredditRecommendedSortType = false;
+                                ViewPostDetailFragment.this.sortType = mSortTypeSharedPreferences.getString(SharedPreferencesUtils.SORT_TYPE_POST_COMMENT, SortType.Type.BEST.value.toUpperCase());
+                                if (ViewPostDetailFragment.this.sortType != null) {
+                                    activity.setTitle(new SortType(SortType.Type.valueOf(ViewPostDetailFragment.this.sortType)).getType().fullName);
+                                    ViewPostDetailFragment.this.sortType = ViewPostDetailFragment.this.sortType.toLowerCase();
+                                }
+                                fetchComments(changeRefreshState, checkSortState, ViewPostDetailFragment.this.sortType);
+                            } else {
+                                ViewPostDetailFragment.this.sortType = subredditData.getSuggestedCommentSort();
+                                String sortTypeTemp = ViewPostDetailFragment.this.sortType.toLowerCase().substring(0, 1).toUpperCase() + ViewPostDetailFragment.this.sortType.substring(1);
+                                activity.setTitle(sortTypeTemp);
+                                fetchComments(changeRefreshState, checkSortState, subredditData.getSuggestedCommentSort());
+                            }
+                        }
+
+                        @Override
+                        public void onFetchSubredditDataFail() {
+                            mRespectSubredditRecommendedSortType = false;
+                            ViewPostDetailFragment.this.sortType = mSortTypeSharedPreferences.getString(SharedPreferencesUtils.SORT_TYPE_POST_COMMENT, SortType.Type.BEST.value.toUpperCase());
+                            if (ViewPostDetailFragment.this.sortType != null) {
+                                activity.setTitle(new SortType(SortType.Type.valueOf(ViewPostDetailFragment.this.sortType)).getType().fullName);
+                                ViewPostDetailFragment.this.sortType = ViewPostDetailFragment.this.sortType.toLowerCase();
+                            }
+                        }
+                    });
+        } else {
+            fetchComments(changeRefreshState, checkSortState, sortType);
+        }
+    }
+
+    private void fetchComments(boolean changeRefreshState, boolean checkSortState, String sortType) {
+        isFetchingComments = true;
+        mAdapter.setSingleComment(mSingleCommentId, isSingleCommentThreadMode);
+        mAdapter.initiallyLoading();
+        String commentId = null;
+        if (isSingleCommentThreadMode) {
+            commentId = mSingleCommentId;
+        }
+
+        Retrofit retrofit = mAccessToken == null ? mRetrofit : mOauthRetrofit;
+        FetchComment.fetchComments(retrofit, mAccessToken, mPost.getId(), commentId, sortType, mExpandChildren,
+                mLocale, new FetchComment.FetchCommentListener() {
+                    @Override
+                    public void onFetchCommentSuccess(ArrayList<Comment> expandedComments,
+                                                      String parentId, ArrayList<String> children) {
+                        if (checkSortState && isSortingComments) {
+                            if (changeRefreshState) {
+                                isRefreshing = false;
+                            }
+
+                            return;
+                        }
+
+                        ViewPostDetailFragment.this.children = children;
+
+                        comments = expandedComments;
+                        hasMoreChildren = children.size() != 0;
+                        mAdapter.addComments(expandedComments, hasMoreChildren);
+
+                        if (children.size() > 0) {
+                            mRecyclerView.clearOnScrollListeners();
+                            mRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
+                                @Override
+                                public void onScrolled(@NonNull RecyclerView recyclerView, int dx, int dy) {
+                                    super.onScrolled(recyclerView, dx, dy);
+                                    if (!mIsSmoothScrolling && !mLockFab) {
+                                        if (!recyclerView.canScrollVertically(1)) {
+                                            activity.hideFab();
+                                        } else {
+                                            if (dy > 0) {
+                                                if (mSwipeUpToHideFab) {
+                                                    activity.showFab();
+                                                } else {
+                                                    activity.hideFab();
+                                                }
+                                            } else {
+                                                if (mSwipeUpToHideFab) {
+                                                    activity.hideFab();
+                                                } else {
+                                                    activity.showFab();
+                                                }
+                                            }
+                                        }
+                                    }
+
+                                    if (!isLoadingMoreChildren && loadMoreChildrenSuccess) {
+                                        int visibleItemCount = mLinearLayoutManager.getChildCount();
+                                        int totalItemCount = mLinearLayoutManager.getItemCount();
+                                        int firstVisibleItemPosition = mLinearLayoutManager.findFirstVisibleItemPosition();
+
+                                        if ((visibleItemCount + firstVisibleItemPosition >= totalItemCount) && firstVisibleItemPosition >= 0) {
+                                            fetchMoreComments();
+                                        }
+                                    }
+                                }
+
+                                @Override
+                                public void onScrollStateChanged(@NonNull RecyclerView recyclerView, int newState) {
+                                    if (newState == RecyclerView.SCROLL_STATE_IDLE) {
+                                        mIsSmoothScrolling = false;
+                                    }
+                                }
+                            });
+                        }
+                        if (changeRefreshState) {
+                            isRefreshing = false;
+                        }
+
+                        isFetchingComments = false;
+                    }
+
+                    @Override
+                    public void onFetchCommentFailed() {
+                        isFetchingComments = false;
+                        if (checkSortState && isSortingComments) {
+                            if (changeRefreshState) {
+                                isRefreshing = false;
+                            }
+
+                            return;
+                        }
+
+                        mAdapter.initiallyLoadCommentsFailed();
+                        if (changeRefreshState) {
+                            isRefreshing = false;
+                        }
+                    }
+                });
+    }
+
+    private void fetchCommentsRespectRecommendedSort(boolean changeRefreshState) {
+        fetchCommentsRespectRecommendedSort(changeRefreshState, true, sortType);
+    }
+
+    void fetchMoreComments() {
+        if (isFetchingComments || isLoadingMoreChildren || !loadMoreChildrenSuccess) {
+            return;
+        }
+
+        isLoadingMoreChildren = true;
+
+        Retrofit retrofit = mAccessToken == null ? mRetrofit : mOauthRetrofit;
+        FetchComment.fetchMoreComment(retrofit, mAccessToken, children, mChildrenStartingIndex,
+                0, mExpandChildren, mLocale, new FetchComment.FetchMoreCommentListener() {
+                    @Override
+                    public void onFetchMoreCommentSuccess(ArrayList<Comment> expandedComments, int childrenStartingIndex) {
+                        hasMoreChildren = childrenStartingIndex < children.size();
+                        mAdapter.addComments(expandedComments, hasMoreChildren);
+                        mChildrenStartingIndex = childrenStartingIndex;
+                        isLoadingMoreChildren = false;
+                        loadMoreChildrenSuccess = true;
+                    }
+
+                    @Override
+                    public void onFetchMoreCommentFailed() {
+                        isLoadingMoreChildren = false;
+                        loadMoreChildrenSuccess = false;
+                        mAdapter.loadMoreCommentsFailed();
+                    }
+                });
+    }
+
+    public void refresh(boolean fetchPost, boolean fetchComments) {
+        if (mAdapter != null && !isRefreshing) {
+            isRefreshing = true;
+            mChildrenStartingIndex = 0;
+
+            mFetchPostInfoLinearLayout.setVisibility(View.GONE);
+            mGlide.clear(mFetchPostInfoImageView);
+
+            if (fetchComments) {
+                fetchCommentsRespectRecommendedSort(!fetchPost);
+            }
+
+            if (fetchPost) {
+                Retrofit retrofit;
+                if (mAccessToken == null) {
+                    retrofit = mRetrofit;
+                } else {
+                    retrofit = mOauthRetrofit;
+                }
+                FetchPost.fetchPost(retrofit, mPost.getId(), mAccessToken, mLocale,
+                        new FetchPost.FetchPostListener() {
+                            @Override
+                            public void fetchPostSuccess(Post post) {
+                                mPost = post;
+                                mAdapter.updatePost(mPost);
+                                EventBus.getDefault().post(new PostUpdateEventToPostList(mPost, postListPosition));
+                                isRefreshing = false;
+                                setupMenu();
+                                mSwipeRefreshLayout.setRefreshing(false);
+                            }
+
+                            @Override
+                            public void fetchPostFailed() {
+                                showMessage(R.string.refresh_post_failed);
+                                isRefreshing = false;
+                            }
+                        });
+            }
+        }
+    }
+
+    private void showErrorView(String subredditId) {
+        mSwipeRefreshLayout.setRefreshing(false);
+        mFetchPostInfoLinearLayout.setVisibility(View.VISIBLE);
+        mFetchPostInfoLinearLayout.setOnClickListener(view -> fetchPostAndCommentsById(subredditId));
+        mFetchPostInfoTextView.setText(R.string.load_post_error);
+        mGlide.load(R.drawable.error_image).into(mFetchPostInfoImageView);
+    }
+
+    private void showMessage(int resId) {
+        if (showToast) {
+            Toast.makeText(activity, resId, Toast.LENGTH_SHORT).show();
+        } else {
+            activity.showSnackBar(resId);
+        }
+    }
+
+    private void markNSFW() {
+        if (mMenu != null) {
+            mMenu.findItem(R.id.action_nsfw_view_post_detail_fragment).setTitle(R.string.action_unmark_nsfw);
+        }
+
+        Map<String, String> params = new HashMap<>();
+        params.put(APIUtils.ID_KEY, mPost.getFullName());
+        mOauthRetrofit.create(RedditAPI.class).markNSFW(APIUtils.getOAuthHeader(mAccessToken), params)
+                .enqueue(new Callback<String>() {
+                    @Override
+                    public void onResponse(@NonNull Call<String> call, @NonNull Response<String> response) {
+                        if (response.isSuccessful()) {
+                            if (mMenu != null) {
+                                mMenu.findItem(R.id.action_nsfw_view_post_detail_fragment).setTitle(R.string.action_unmark_nsfw);
+                            }
+
+                            refresh(true, false);
+                            showMessage(R.string.mark_nsfw_success);
+                        } else {
+                            if (mMenu != null) {
+                                mMenu.findItem(R.id.action_nsfw_view_post_detail_fragment).setTitle(R.string.action_mark_nsfw);
+                            }
+
+                            showMessage(R.string.mark_nsfw_failed);
+                        }
+                    }
+
+                    @Override
+                    public void onFailure(@NonNull Call<String> call, @NonNull Throwable t) {
+                        if (mMenu != null) {
+                            mMenu.findItem(R.id.action_nsfw_view_post_detail_fragment).setTitle(R.string.action_mark_nsfw);
+                        }
+
+                        showMessage(R.string.mark_nsfw_failed);
+                    }
+                });
+    }
+
+    private void unmarkNSFW() {
+        if (mMenu != null) {
+            mMenu.findItem(R.id.action_nsfw_view_post_detail_fragment).setTitle(R.string.action_mark_nsfw);
+        }
+
+        Map<String, String> params = new HashMap<>();
+        params.put(APIUtils.ID_KEY, mPost.getFullName());
+        mOauthRetrofit.create(RedditAPI.class).unmarkNSFW(APIUtils.getOAuthHeader(mAccessToken), params)
+                .enqueue(new Callback<String>() {
+                    @Override
+                    public void onResponse(@NonNull Call<String> call, @NonNull Response<String> response) {
+                        if (response.isSuccessful()) {
+                            if (mMenu != null) {
+                                mMenu.findItem(R.id.action_nsfw_view_post_detail_fragment).setTitle(R.string.action_mark_nsfw);
+                            }
+
+                            refresh(true, false);
+                            showMessage(R.string.unmark_nsfw_success);
+                        } else {
+                            if (mMenu != null) {
+                                mMenu.findItem(R.id.action_nsfw_view_post_detail_fragment).setTitle(R.string.action_unmark_nsfw);
+                            }
+
+                            showMessage(R.string.unmark_nsfw_failed);
+                        }
+                    }
+
+                    @Override
+                    public void onFailure(@NonNull Call<String> call, @NonNull Throwable t) {
+                        if (mMenu != null) {
+                            mMenu.findItem(R.id.action_nsfw_view_post_detail_fragment).setTitle(R.string.action_unmark_nsfw);
+                        }
+
+                        showMessage(R.string.unmark_nsfw_failed);
+                    }
+                });
+    }
+
+    private void markSpoiler() {
+        if (mMenu != null) {
+            mMenu.findItem(R.id.action_spoiler_view_post_detail_fragment).setTitle(R.string.action_unmark_spoiler);
+        }
+
+        Map<String, String> params = new HashMap<>();
+        params.put(APIUtils.ID_KEY, mPost.getFullName());
+        mOauthRetrofit.create(RedditAPI.class).markSpoiler(APIUtils.getOAuthHeader(mAccessToken), params)
+                .enqueue(new Callback<String>() {
+                    @Override
+                    public void onResponse(@NonNull Call<String> call, @NonNull Response<String> response) {
+                        if (response.isSuccessful()) {
+                            if (mMenu != null) {
+                                mMenu.findItem(R.id.action_spoiler_view_post_detail_fragment).setTitle(R.string.action_unmark_spoiler);
+                            }
+
+                            refresh(true, false);
+                            showMessage(R.string.mark_spoiler_success);
+                        } else {
+                            if (mMenu != null) {
+                                mMenu.findItem(R.id.action_spoiler_view_post_detail_fragment).setTitle(R.string.action_mark_spoiler);
+                            }
+
+                            showMessage(R.string.mark_spoiler_failed);
+                        }
+                    }
+
+                    @Override
+                    public void onFailure(@NonNull Call<String> call, @NonNull Throwable t) {
+                        if (mMenu != null) {
+                            mMenu.findItem(R.id.action_spoiler_view_post_detail_fragment).setTitle(R.string.action_mark_spoiler);
+                        }
+
+                        showMessage(R.string.mark_spoiler_failed);
+                    }
+                });
+    }
+
+    private void unmarkSpoiler() {
+        if (mMenu != null) {
+            mMenu.findItem(R.id.action_spoiler_view_post_detail_fragment).setTitle(R.string.action_mark_spoiler);
+        }
+
+        Map<String, String> params = new HashMap<>();
+        params.put(APIUtils.ID_KEY, mPost.getFullName());
+        mOauthRetrofit.create(RedditAPI.class).unmarkSpoiler(APIUtils.getOAuthHeader(mAccessToken), params)
+                .enqueue(new Callback<String>() {
+                    @Override
+                    public void onResponse(@NonNull Call<String> call, @NonNull Response<String> response) {
+                        if (response.isSuccessful()) {
+                            if (mMenu != null) {
+                                mMenu.findItem(R.id.action_spoiler_view_post_detail_fragment).setTitle(R.string.action_mark_spoiler);
+                            }
+
+                            refresh(true, false);
+                            showMessage(R.string.unmark_spoiler_success);
+                        } else {
+                            if (mMenu != null) {
+                                mMenu.findItem(R.id.action_spoiler_view_post_detail_fragment).setTitle(R.string.action_unmark_spoiler);
+                            }
+
+                            showMessage(R.string.unmark_spoiler_failed);
+                        }
+                    }
+
+                    @Override
+                    public void onFailure(@NonNull Call<String> call, @NonNull Throwable t) {
+                        if (mMenu != null) {
+                            mMenu.findItem(R.id.action_spoiler_view_post_detail_fragment).setTitle(R.string.action_unmark_spoiler);
+                        }
+
+                        showMessage(R.string.unmark_spoiler_failed);
+                    }
+                });
+    }
+
+    public void deleteComment(String fullName, int position) {
+        new MaterialAlertDialogBuilder(activity, R.style.MaterialAlertDialogTheme)
+                .setTitle(R.string.delete_this_comment)
+                .setMessage(R.string.are_you_sure)
+                .setPositiveButton(R.string.delete, (dialogInterface, i)
+                        -> DeleteThing.delete(mOauthRetrofit, fullName, mAccessToken, new DeleteThing.DeleteThingListener() {
+                    @Override
+                    public void deleteSuccess() {
+                        Toast.makeText(activity, R.string.delete_post_success, Toast.LENGTH_SHORT).show();
+                        mAdapter.deleteComment(position);
+                    }
+
+                    @Override
+                    public void deleteFailed() {
+                        Toast.makeText(activity, R.string.delete_post_failed, Toast.LENGTH_SHORT).show();
+                    }
+                }))
+                .setNegativeButton(R.string.cancel, null)
+                .show();
+    }
+
+    public void showRemovedComment(Comment comment, int position) {
+        Toast.makeText(activity, R.string.fetching_removed_comment, Toast.LENGTH_SHORT).show();
+        FetchRemovedComment.fetchRemovedComment(
+                pushshiftRetrofit,
+                comment,
+                new FetchRemovedComment.FetchRemovedCommentListener() {
+                    @Override
+                    public void fetchSuccess(Comment comment) {
+                        mAdapter.editComment(comment.getAuthor(), comment.getCommentMarkdown(), position);
+                    }
+
+                    @Override
+                    public void fetchFailed() {
+                        Toast.makeText(activity, R.string.show_removed_comment_failed, Toast.LENGTH_SHORT).show();
+                    }
+                });
+    }
+
+    public void changeToNomalThreadMode() {
+        isSingleCommentThreadMode = false;
+        mSingleCommentId = null;
+        mRespectSubredditRecommendedSortType = mSharedPreferences.getBoolean(SharedPreferencesUtils.RESPECT_SUBREDDIT_RECOMMENDED_COMMENT_SORT_TYPE, false);
+        refresh(false, true);
+    }
+
+    public void scrollToNextParentComment() {
+        if (mLinearLayoutManager != null) {
+            int currentPosition = mLinearLayoutManager.findFirstVisibleItemPosition();
+            if (mAdapter != null) {
+                int nextParentPosition = mAdapter.getNextParentCommentPosition(currentPosition);
+                if (nextParentPosition < 0) {
+                    return;
+                }
+                mSmoothScroller.setTargetPosition(nextParentPosition);
+                if (mLinearLayoutManager != null) {
+                    mIsSmoothScrolling = true;
+                    mLinearLayoutManager.startSmoothScroll(mSmoothScroller);
+                }
+            }
+        }
+    }
+
+    public void scrollToPreviousParentComment() {
+        if (mLinearLayoutManager != null) {
+            int currentPosition = mLinearLayoutManager.findFirstVisibleItemPosition();
+            if (mAdapter != null) {
+                int nextParentPosition = mAdapter.getPreviousParentCommentPosition(currentPosition);
+                if (nextParentPosition < 0) {
+                    return;
+                }
+                mSmoothScroller.setTargetPosition(nextParentPosition);
+                if (mLinearLayoutManager != null) {
+                    mIsSmoothScrolling = true;
+                    mLinearLayoutManager.startSmoothScroll(mSmoothScroller);
+                }
+            }
+        }
+    }
+
+    public void delayTransition() {
+        TransitionManager.beginDelayedTransition(mRecyclerView, new AutoTransition());
+    }
+
+    public void showRemovedPost() {
+        Toast.makeText(activity, R.string.fetching_removed_post, Toast.LENGTH_SHORT).show();
+        FetchRemovedPost.fetchRemovedPost(
+                pushshiftRetrofit,
+                mPost,
+                new FetchRemovedPost.FetchRemovedPostListener() {
+                    @Override
+                    public void fetchSuccess(Post post) {
+                        mPost = post;
+                        mAdapter.updatePost(post);
+                    }
+
+                    @Override
+                    public void fetchFailed() {
+                        Toast.makeText(activity, R.string.show_removed_post_failed, Toast.LENGTH_SHORT).show();
+                    }
+                });
+    }
+
+    @Subscribe
+    public void onPostUpdateEvent(PostUpdateEventToDetailActivity event) {
+        if (mPost.getId().equals(event.post.getId())) {
+            mPost.setVoteType(event.post.getVoteType());
+            mPost.setSaved(event.post.isSaved());
+            if (mMenu != null) {
+                if (event.post.isSaved()) {
+                    mMenu.findItem(R.id.action_save_view_post_detail_fragment).setIcon(mSavedIcon);
+                } else {
+                    mMenu.findItem(R.id.action_save_view_post_detail_fragment).setIcon(mUnsavedIcon);
+                }
+            }
+            mAdapter.updatePost(mPost);
+        }
+    }
+
+    @Subscribe
+    public void onChangeNSFWBlurEvent(ChangeNSFWBlurEvent event) {
+        mAdapter.setBlurNSFW(event.needBlurNSFW);
+        refreshAdapter();
+    }
+
+    @Subscribe
+    public void onChangeSpoilerBlurEvent(ChangeSpoilerBlurEvent event) {
+        mAdapter.setBlurSpoiler(event.needBlurSpoiler);
+        refreshAdapter();
+    }
+
+    private void refreshAdapter() {
+        int previousPosition = -1;
+        if (mLinearLayoutManager != null) {
+            previousPosition = mLinearLayoutManager.findFirstVisibleItemPosition();
+        }
+
+        RecyclerView.LayoutManager layoutManager = mRecyclerView.getLayoutManager();
+        mRecyclerView.setAdapter(null);
+        mRecyclerView.setLayoutManager(null);
+        mRecyclerView.setAdapter(mAdapter);
+        mRecyclerView.setLayoutManager(layoutManager);
+
+        if (previousPosition > 0) {
+            mRecyclerView.scrollToPosition(previousPosition);
+        }
+    }
+
+    @Subscribe
+    public void onChangeNetworkStatusEvent(ChangeNetworkStatusEvent changeNetworkStatusEvent) {
+        if (mAdapter != null) {
+            String autoplay = mSharedPreferences.getString(SharedPreferencesUtils.VIDEO_AUTOPLAY, SharedPreferencesUtils.VIDEO_AUTOPLAY_VALUE_NEVER);
+            String dataSavingMode = mSharedPreferences.getString(SharedPreferencesUtils.DATA_SAVING_MODE, SharedPreferencesUtils.DATA_SAVING_MODE_OFF);
+            boolean stateChanged = false;
+            if (autoplay.equals(SharedPreferencesUtils.VIDEO_AUTOPLAY_VALUE_ON_WIFI)) {
+                mAdapter.setAutoplay(changeNetworkStatusEvent.connectedNetwork == Utils.NETWORK_TYPE_WIFI);
+                stateChanged = true;
+            }
+            if (dataSavingMode.equals(SharedPreferencesUtils.DATA_SAVING_MODE_ONLY_ON_CELLULAR_DATA)) {
+                mAdapter.setDataSavingMode(changeNetworkStatusEvent.connectedNetwork == Utils.NETWORK_TYPE_CELLULAR);
+                stateChanged = true;
+            }
+
+            if (stateChanged) {
+                refreshAdapter();
+            }
+        }
+    }
+
+    @Override
+    public void onAttach(@NonNull Context context) {
+        super.onAttach(context);
+        activity = (ViewPostDetailActivity) context;
+    }
+
+    @Override
+    public void applyTheme() {
+        mSwipeRefreshLayout.setProgressBackgroundColorSchemeColor(mCustomThemeWrapper.getCircularProgressBarBackground());
+        mSwipeRefreshLayout.setColorSchemeColors(mCustomThemeWrapper.getColorAccent());
+        mFetchPostInfoTextView.setTextColor(mCustomThemeWrapper.getSecondaryTextColor());
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_view_post_detail.xml b/app/src/main/res/layout/activity_view_post_detail.xml
index 2e3479d0..d16899f3 100644
--- a/app/src/main/res/layout/activity_view_post_detail.xml
+++ b/app/src/main/res/layout/activity_view_post_detail.xml
@@ -32,44 +32,11 @@
 
     </com.google.android.material.appbar.AppBarLayout>
 
-    <androidx.swiperefreshlayout.widget.SwipeRefreshLayout
-        android:id="@+id/swipe_refresh_layout_view_post_detail_activity"
+    <androidx.viewpager2.widget.ViewPager2
+        android:id="@+id/view_pager_2_view_post_detail_activity"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
-        app:layout_behavior="@string/appbar_scrolling_view_behavior">
-
-        <ml.docilealligator.infinityforreddit.customviews.CustomToroContainer
-            android:id="@+id/recycler_view_view_post_detail"
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:paddingBottom="144dp"
-            android:clipToPadding="false" />
-
-    </androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
-
-    <LinearLayout
-        android:id="@+id/fetch_post_info_linear_layout_view_post_detail_activity"
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:gravity="center"
-        android:orientation="vertical"
-        android:visibility="gone">
-
-        <ImageView
-            android:id="@+id/fetch_post_info_image_view_view_post_detail_activity"
-            android:layout_width="150dp"
-            android:layout_height="wrap_content" />
-
-        <TextView
-            android:id="@+id/fetch_post_info_text_view_view_post_detail_activity"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_marginTop="16dp"
-            android:gravity="center"
-            android:textSize="?attr/font_default"
-            android:fontFamily="?attr/font_family" />
-
-    </LinearLayout>
+        app:layout_behavior="@string/appbar_scrolling_view_behavior" />
 
     <com.google.android.material.floatingactionbutton.FloatingActionButton
         android:id="@+id/fab_view_post_detail_activity"
diff --git a/app/src/main/res/layout/fragment_view_post_detail.xml b/app/src/main/res/layout/fragment_view_post_detail.xml
new file mode 100644
index 00000000..7b2c314a
--- /dev/null
+++ b/app/src/main/res/layout/fragment_view_post_detail.xml
@@ -0,0 +1,48 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    tools:context=".fragments.ViewPostDetailFragment">
+
+    <androidx.swiperefreshlayout.widget.SwipeRefreshLayout
+        android:id="@+id/swipe_refresh_layout_view_post_detail_fragment"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        app:layout_behavior="@string/appbar_scrolling_view_behavior">
+
+        <ml.docilealligator.infinityforreddit.customviews.CustomToroContainer
+            android:id="@+id/recycler_view_view_post_detail_fragment"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:paddingBottom="144dp"
+            android:clipToPadding="false" />
+
+    </androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
+
+    <LinearLayout
+        android:id="@+id/fetch_post_info_linear_layout_view_post_detail_fragment"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:gravity="center"
+        android:orientation="vertical"
+        android:visibility="gone">
+
+        <ImageView
+            android:id="@+id/fetch_post_info_image_view_view_post_detail_fragment"
+            android:layout_width="150dp"
+            android:layout_height="wrap_content" />
+
+        <TextView
+            android:id="@+id/fetch_post_info_text_view_view_post_detail_fragment"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="16dp"
+            android:gravity="center"
+            android:textSize="?attr/font_default"
+            android:fontFamily="?attr/font_family" />
+
+    </LinearLayout>
+
+</FrameLayout>
\ No newline at end of file
diff --git a/app/src/main/res/menu/view_post_detail_activity.xml b/app/src/main/res/menu/view_post_detail_fragment.xml
index 454603aa..d9e66bd6 100644
--- a/app/src/main/res/menu/view_post_detail_activity.xml
+++ b/app/src/main/res/menu/view_post_detail_fragment.xml
@@ -2,7 +2,7 @@
 <menu xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto">
     <item
-        android:id="@+id/action_comment_view_post_detail_activity"
+        android:id="@+id/action_comment_view_post_detail_fragment"
         android:orderInCategory="1"
         android:title="@string/action_add_comment"
         android:icon="@drawable/ic_comment_toolbar_24dp"
@@ -10,92 +10,92 @@
         android:visible="false" />
 
     <item
-        android:id="@+id/action_save_view_post_detail_activity"
+        android:id="@+id/action_save_view_post_detail_fragment"
         android:orderInCategory="2"
         android:title="@string/action_save_post"
         app:showAsAction="ifRoom"
         android:visible="false" />
 
     <item
-        android:id="@+id/action_sort_view_post_detail_activity"
+        android:id="@+id/action_sort_view_post_detail_fragment"
         android:orderInCategory="3"
         android:title="@string/action_sort"
         app:showAsAction="never"
         android:visible="false" />
 
     <item
-        android:id="@+id/action_refresh_view_post_detail_activity"
+        android:id="@+id/action_refresh_view_post_detail_fragment"
         android:orderInCategory="4"
         android:title="@string/action_refresh"
         app:showAsAction="never" />
 
     <item
-        android:id="@+id/action_view_crosspost_parent_view_post_detail_activity"
+        android:id="@+id/action_view_crosspost_parent_view_post_detail_fragment"
         android:orderInCategory="5"
         android:title="@string/action_view_crosspost_parent"
         app:showAsAction="never"
         android:visible="false" />
 
     <item
-        android:id="@+id/action_hide_view_post_detail_activity"
+        android:id="@+id/action_hide_view_post_detail_fragment"
         android:orderInCategory="6"
         app:showAsAction="never"
         android:visible="false" />
 
     <item
-        android:id="@+id/action_edit_view_post_detail_activity"
+        android:id="@+id/action_edit_view_post_detail_fragment"
         android:orderInCategory="7"
         android:title="@string/action_edit_post"
         app:showAsAction="never"
         android:visible="false" />
 
     <item
-        android:id="@+id/action_delete_view_post_detail_activity"
+        android:id="@+id/action_delete_view_post_detail_fragment"
         android:orderInCategory="8"
         android:title="@string/action_delete_post"
         app:showAsAction="never"
         android:visible="false" />
 
     <item
-        android:id="@+id/action_nsfw_view_post_detail_activity"
+        android:id="@+id/action_nsfw_view_post_detail_fragment"
         android:orderInCategory="9"
         app:showAsAction="never"
         android:visible="false" />
 
     <item
-        android:id="@+id/action_spoiler_view_post_detail_activity"
+        android:id="@+id/action_spoiler_view_post_detail_fragment"
         android:orderInCategory="10"
         app:showAsAction="never"
         android:visible="false" />
 
     <item
-        android:id="@+id/action_edit_flair_view_post_detail_activity"
+        android:id="@+id/action_edit_flair_view_post_detail_fragment"
         android:orderInCategory="11"
         android:title="@string/action_edit_flair"
         app:showAsAction="never"
         android:visible="false" />
 
     <item
-        android:id="@+id/action_give_award_view_post_detail_activity"
+        android:id="@+id/action_give_award_view_post_detail_fragment"
         android:orderInCategory="12"
         android:title="@string/action_give_award"
         app:showAsAction="never" />
 
     <item
-        android:id="@+id/action_report_view_post_detail_activity"
+        android:id="@+id/action_report_view_post_detail_fragment"
         android:orderInCategory="13"
         android:title="@string/action_report"
         app:showAsAction="never" />
 
     <item
-        android:id="@+id/action_see_removed_view_post_detail_activity"
+        android:id="@+id/action_see_removed_view_post_detail_fragment"
         android:orderInCategory="14"
         android:title="@string/action_see_removed"
         app:showAsAction="never"
         android:visible="false" />
 
     <item
-        android:id="@+id/action_crosspost_view_post_detail_activity"
+        android:id="@+id/action_crosspost_view_post_detail_fragment"
         android:orderInCategory="15"
         android:title="@string/action_crosspost"
         app:showAsAction="never" />
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 50eab52f..b06b9b52 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -1016,7 +1016,5 @@
     <string name="add_subreddit_or_user_to_multireddit_failed">Unable to add %1$s to multireddit %2$s</string>
 
     <string name="choose_a_user">Choose a user</string>
-    <!-- TODO: Remove or change this placeholder text -->
-    <string name="hello_blank_fragment">Hello blank fragment</string>
 
 </resources>