Support viewing Reddit Gallery in app. Fix gif not autoplayable in CommentAndPostRecyclerViewAdapter.

app/src/main/AndroidManifest.xml

@@ -23,7 +23,12 @@
         android:theme="@style/AppTheme"
         android:usesCleartextTraffic="true"
         tools:replace="android:label">
-        <activity android:name=".Activity.SendPrivateMessageActivity"
+        <activity android:name=".Activity.ViewRedditGalleryActivity"
+            android:configChanges="orientation|screenSize|layoutDirection"
+            android:parentActivityName=".Activity.MainActivity"
+            android:theme="@style/AppTheme.Draggable" />
+        <activity
+            android:name=".Activity.SendPrivateMessageActivity"
             android:label="@string/send_private_message_activity_label"
             android:parentActivityName=".Activity.MainActivity"
             android:theme="@style/AppTheme.NoActionBar"
@@ -322,7 +327,6 @@
                 android:name="android.support.FILE_PROVIDER_PATHS"
                 android:resource="@xml/file_paths" />
         </provider>
-
         <provider
             android:name="androidx.startup.InitializationProvider"
             android:authorities="${applicationId}.androidx-startup"

app/src/main/java/ml/docilealligator/infinityforreddit/Activity/ViewRedditGalleryActivity.java

@@ -0,0 +1,237 @@
+package ml.docilealligator.infinityforreddit.Activity;
+
+import android.content.SharedPreferences;
+import android.graphics.drawable.ColorDrawable;
+import android.graphics.drawable.Drawable;
+import android.os.Bundle;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.widget.Toast;
+
+import androidx.annotation.NonNull;
+import androidx.appcompat.app.ActionBar;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.fragment.app.Fragment;
+import androidx.fragment.app.FragmentManager;
+import androidx.fragment.app.FragmentStatePagerAdapter;
+import androidx.viewpager.widget.ViewPager;
+
+import com.thefuntasty.hauler.DragDirection;
+import com.thefuntasty.hauler.HaulerView;
+
+import java.util.ArrayList;
+
+import javax.inject.Inject;
+import javax.inject.Named;
+
+import butterknife.BindView;
+import butterknife.ButterKnife;
+import ml.docilealligator.infinityforreddit.Font.ContentFontFamily;
+import ml.docilealligator.infinityforreddit.Font.ContentFontStyle;
+import ml.docilealligator.infinityforreddit.Font.FontFamily;
+import ml.docilealligator.infinityforreddit.Font.FontStyle;
+import ml.docilealligator.infinityforreddit.Font.TitleFontFamily;
+import ml.docilealligator.infinityforreddit.Font.TitleFontStyle;
+import ml.docilealligator.infinityforreddit.Fragment.ViewRedditGalleryImageOrGifFragment;
+import ml.docilealligator.infinityforreddit.Fragment.ViewRedditGalleryVideoFragment;
+import ml.docilealligator.infinityforreddit.Infinity;
+import ml.docilealligator.infinityforreddit.Post.Post;
+import ml.docilealligator.infinityforreddit.R;
+import ml.docilealligator.infinityforreddit.SetAsWallpaperCallback;
+import ml.docilealligator.infinityforreddit.Utils.SharedPreferencesUtils;
+import ml.docilealligator.infinityforreddit.WallpaperSetter;
+
+public class ViewRedditGalleryActivity extends AppCompatActivity implements SetAsWallpaperCallback {
+
+    public static final String EXTRA_REDDIT_GALLERY = "ERG";
+
+    @BindView(R.id.hauler_view_view_reddit_gallery_activity)
+    HaulerView haulerView;
+    @BindView(R.id.view_pager_view_reddit_gallery_activity)
+    ViewPager viewPager;
+    private SectionsPagerAdapter sectionsPagerAdapter;
+    private ArrayList<Post.Gallery> gallery;
+    @Inject
+    @Named("default")
+    SharedPreferences sharedPreferences;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        ((Infinity) getApplication()).getAppComponent().inject(this);
+
+        getTheme().applyStyle(R.style.Theme_Normal, true);
+
+        getTheme().applyStyle(FontStyle.valueOf(sharedPreferences
+                .getString(SharedPreferencesUtils.FONT_SIZE_KEY, FontStyle.Normal.name())).getResId(), true);
+
+        getTheme().applyStyle(TitleFontStyle.valueOf(sharedPreferences
+                .getString(SharedPreferencesUtils.TITLE_FONT_SIZE_KEY, TitleFontStyle.Normal.name())).getResId(), true);
+
+        getTheme().applyStyle(ContentFontStyle.valueOf(sharedPreferences
+                .getString(SharedPreferencesUtils.CONTENT_FONT_SIZE_KEY, ContentFontStyle.Normal.name())).getResId(), true);
+
+        getTheme().applyStyle(FontFamily.valueOf(sharedPreferences
+                .getString(SharedPreferencesUtils.FONT_FAMILY_KEY, FontFamily.Default.name())).getResId(), true);
+
+        getTheme().applyStyle(TitleFontFamily.valueOf(sharedPreferences
+                .getString(SharedPreferencesUtils.TITLE_FONT_FAMILY_KEY, TitleFontFamily.Default.name())).getResId(), true);
+
+        getTheme().applyStyle(ContentFontFamily.valueOf(sharedPreferences
+                .getString(SharedPreferencesUtils.CONTENT_FONT_FAMILY_KEY, ContentFontFamily.Default.name())).getResId(), true);
+
+        setContentView(R.layout.activity_view_reddit_gallery);
+
+        ButterKnife.bind(this);
+
+        ActionBar actionBar = getSupportActionBar();
+        Drawable upArrow = getResources().getDrawable(R.drawable.ic_arrow_back_white_24dp);
+        actionBar.setHomeAsUpIndicator(upArrow);
+        actionBar.setBackgroundDrawable(new ColorDrawable(getResources().getColor(R.color.transparentActionBarAndExoPlayerControllerColor)));
+
+        setTitle(" ");
+
+        gallery = getIntent().getParcelableArrayListExtra(EXTRA_REDDIT_GALLERY);
+        if (gallery == null || gallery.isEmpty()) {
+            finish();
+            return;
+        }
+
+        haulerView.setOnDragDismissedListener(dragDirection -> {
+            int slide = dragDirection == DragDirection.UP ? R.anim.slide_out_up : R.anim.slide_out_down;
+            finish();
+            overridePendingTransition(0, slide);
+        });
+
+        setupViewPager();
+    }
+
+    private void setupViewPager() {
+        setToolbarTitle(0);
+        sectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());
+        viewPager.addOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
+            @Override
+            public void onPageSelected(int position) {
+                setToolbarTitle(position);
+            }
+        });
+        viewPager.setAdapter(sectionsPagerAdapter);
+    }
+
+    private void setToolbarTitle(int position) {
+        if (gallery != null && position >= 0 && position < gallery.size()) {
+            if (gallery.get(position).mediaType == Post.Gallery.TYPE_IMAGE) {
+                setTitle(getString(R.string.view_reddit_gallery_activity_image_label, position + 1, gallery.size()));
+            } else if (gallery.get(position).mediaType == Post.Gallery.TYPE_GIF) {
+                setTitle(getString(R.string.view_reddit_gallery_activity_gif_label, position + 1, gallery.size()));
+            } else {
+                setTitle(getString(R.string.view_reddit_gallery_activity_video_label, position + 1, gallery.size()));
+            }
+        }
+    }
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        return true;
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(@NonNull MenuItem item) {
+        if (item.getItemId() == android.R.id.home) {
+            finish();
+            return true;
+        }
+
+        return false;
+    }
+
+    @Override
+    public void setToHomeScreen(int viewPagerPosition) {
+        if (gallery != null && viewPagerPosition >= 0 && viewPagerPosition < gallery.size()) {
+            WallpaperSetter.set(gallery.get(viewPagerPosition).url, WallpaperSetter.HOME_SCREEN, this,
+                    new WallpaperSetter.SetWallpaperListener() {
+                        @Override
+                        public void success() {
+                            Toast.makeText(ViewRedditGalleryActivity.this, R.string.wallpaper_set, Toast.LENGTH_SHORT).show();
+                        }
+
+                        @Override
+                        public void failed() {
+                            Toast.makeText(ViewRedditGalleryActivity.this, R.string.error_set_wallpaper, Toast.LENGTH_SHORT).show();
+                        }
+                    });
+        }
+    }
+
+    @Override
+    public void setToLockScreen(int viewPagerPosition) {
+        if (gallery != null && viewPagerPosition >= 0 && viewPagerPosition < gallery.size()) {
+            WallpaperSetter.set(gallery.get(viewPagerPosition).url, WallpaperSetter.LOCK_SCREEN, this,
+                    new WallpaperSetter.SetWallpaperListener() {
+                        @Override
+                        public void success() {
+                            Toast.makeText(ViewRedditGalleryActivity.this, R.string.wallpaper_set, Toast.LENGTH_SHORT).show();
+                        }
+
+                        @Override
+                        public void failed() {
+                            Toast.makeText(ViewRedditGalleryActivity.this, R.string.error_set_wallpaper, Toast.LENGTH_SHORT).show();
+                        }
+                    });
+        }
+    }
+
+    @Override
+    public void setToBoth(int viewPagerPosition) {
+        if (gallery != null && viewPagerPosition >= 0 && viewPagerPosition < gallery.size()) {
+            WallpaperSetter.set(gallery.get(viewPagerPosition).url, WallpaperSetter.BOTH_SCREENS, this,
+                    new WallpaperSetter.SetWallpaperListener() {
+                        @Override
+                        public void success() {
+                            Toast.makeText(ViewRedditGalleryActivity.this, R.string.wallpaper_set, Toast.LENGTH_SHORT).show();
+                        }
+
+                        @Override
+                        public void failed() {
+                            Toast.makeText(ViewRedditGalleryActivity.this, R.string.error_set_wallpaper, Toast.LENGTH_SHORT).show();
+                        }
+                    });
+        }
+    }
+
+    public int getCurrentPagePosition() {
+        return viewPager.getCurrentItem();
+    }
+
+    private class SectionsPagerAdapter extends FragmentStatePagerAdapter {
+
+        SectionsPagerAdapter(@NonNull FragmentManager fm) {
+            super(fm, BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT);
+        }
+
+        @NonNull
+        @Override
+        public Fragment getItem(int position) {
+            Post.Gallery media = gallery.get(position);
+            if (media.mediaType == Post.Gallery.TYPE_VIDEO) {
+                ViewRedditGalleryVideoFragment fragment = new ViewRedditGalleryVideoFragment();
+                Bundle bundle = new Bundle();
+                bundle.putParcelable(ViewRedditGalleryVideoFragment.EXTRA_REDDIT_GALLERY_VIDEO, media);
+                fragment.setArguments(bundle);
+                return fragment;
+            } else {
+                ViewRedditGalleryImageOrGifFragment fragment = new ViewRedditGalleryImageOrGifFragment();
+                Bundle bundle = new Bundle();
+                bundle.putParcelable(ViewRedditGalleryImageOrGifFragment.EXTRA_REDDIT_GALLERY_MEDIA, media);
+                fragment.setArguments(bundle);
+                return fragment;
+            }
+        }
+
+        @Override
+        public int getCount() {
+            return gallery.size();
+        }
+    }
+}

app/src/main/java/ml/docilealligator/infinityforreddit/Adapter/CommentAndPostRecyclerViewAdapter.java

@@ -85,6 +85,7 @@ import ml.docilealligator.infinityforreddit.Activity.FilteredThingActivity;
 import ml.docilealligator.infinityforreddit.Activity.LinkResolverActivity;
 import ml.docilealligator.infinityforreddit.Activity.ViewImageOrGifActivity;
 import ml.docilealligator.infinityforreddit.Activity.ViewPostDetailActivity;
+import ml.docilealligator.infinityforreddit.Activity.ViewRedditGalleryActivity;
 import ml.docilealligator.infinityforreddit.Activity.ViewSubredditDetailActivity;
 import ml.docilealligator.infinityforreddit.Activity.ViewUserDetailActivity;
 import ml.docilealligator.infinityforreddit.Activity.ViewVideoActivity;
@@ -119,16 +120,17 @@ public class CommentAndPostRecyclerViewAdapter extends RecyclerView.Adapter<Recy
     private static final int VIEW_TYPE_POST_DETAIL_IMAGE_AND_GIF_AUTOPLAY = 3;
     private static final int VIEW_TYPE_POST_DETAIL_LINK = 4;
     private static final int VIEW_TYPE_POST_DETAIL_NO_PREVIEW_LINK = 5;
-    private static final int VIEW_TYPE_POST_DETAIL_TEXT_TYPE = 6;
-    private static final int VIEW_TYPE_FIRST_LOADING = 7;
-    private static final int VIEW_TYPE_FIRST_LOADING_FAILED = 8;
-    private static final int VIEW_TYPE_NO_COMMENT_PLACEHOLDER = 9;
-    private static final int VIEW_TYPE_COMMENT = 10;
-    private static final int VIEW_TYPE_COMMENT_FULLY_COLLAPSED = 11;
-    private static final int VIEW_TYPE_LOAD_MORE_CHILD_COMMENTS = 12;
-    private static final int VIEW_TYPE_IS_LOADING_MORE_COMMENTS = 13;
-    private static final int VIEW_TYPE_LOAD_MORE_COMMENTS_FAILED = 14;
-    private static final int VIEW_TYPE_VIEW_ALL_COMMENTS = 15;
+    private static final int VIEW_TYPE_POST_DETAIL_GALLERY = 6;
+    private static final int VIEW_TYPE_POST_DETAIL_TEXT_TYPE = 7;
+    private static final int VIEW_TYPE_FIRST_LOADING = 8;
+    private static final int VIEW_TYPE_FIRST_LOADING_FAILED = 9;
+    private static final int VIEW_TYPE_NO_COMMENT_PLACEHOLDER = 10;
+    private static final int VIEW_TYPE_COMMENT = 11;
+    private static final int VIEW_TYPE_COMMENT_FULLY_COLLAPSED = 12;
+    private static final int VIEW_TYPE_LOAD_MORE_CHILD_COMMENTS = 13;
+    private static final int VIEW_TYPE_IS_LOADING_MORE_COMMENTS = 14;
+    private static final int VIEW_TYPE_LOAD_MORE_COMMENTS_FAILED = 15;
+    private static final int VIEW_TYPE_VIEW_ALL_COMMENTS = 16;
 
     private AppCompatActivity mActivity;
     private Retrofit mRetrofit;
@@ -444,6 +446,8 @@ public class CommentAndPostRecyclerViewAdapter extends RecyclerView.Adapter<Recy
                     return VIEW_TYPE_POST_DETAIL_LINK;
                 case Post.NO_PREVIEW_LINK_TYPE:
                     return VIEW_TYPE_POST_DETAIL_NO_PREVIEW_LINK;
+                case Post.GALLERY_TYPE:
+                    return VIEW_TYPE_POST_DETAIL_GALLERY;
                 default:
                     return VIEW_TYPE_POST_DETAIL_TEXT_TYPE;
 
@@ -519,6 +523,8 @@ public class CommentAndPostRecyclerViewAdapter extends RecyclerView.Adapter<Recy
                 return new PostDetailLinkViewHolder(LayoutInflater.from(parent.getContext()).inflate(R.layout.item_post_detail_link, parent, false));
             case VIEW_TYPE_POST_DETAIL_NO_PREVIEW_LINK:
                 return new PostDetailNoPreviewLinkViewHolder(LayoutInflater.from(parent.getContext()).inflate(R.layout.item_post_detail_no_preview_link, parent, false));
+            case VIEW_TYPE_POST_DETAIL_GALLERY:
+                return new PostDetailGalleryViewHolder(LayoutInflater.from(parent.getContext()).inflate(R.layout.item_post_detail_gallery, parent, false));
             case VIEW_TYPE_POST_DETAIL_TEXT_TYPE:
                 return new PostDetailTextViewHolder(LayoutInflater.from(parent.getContext()).inflate(R.layout.item_post_detail_text, parent, false));
             case VIEW_TYPE_FIRST_LOADING:
@@ -761,6 +767,16 @@ public class CommentAndPostRecyclerViewAdapter extends RecyclerView.Adapter<Recy
                     mMarkwonAdapter.setMarkdown(mPostDetailMarkwon, mPost.getSelfText());
                     mMarkwonAdapter.notifyDataSetChanged();
                 }
+            } else if (holder instanceof PostDetailGalleryViewHolder) {
+                if (mPost.getPreviewUrl() != null && !mPost.getPreviewUrl().equals("")) {
+                    ((PostDetailGalleryViewHolder) holder).mRelativeLayout.setVisibility(View.VISIBLE);
+                    ((PostDetailGalleryViewHolder) holder).mImageView
+                            .setRatio((float) mPost.getPreviewHeight() / mPost.getPreviewWidth());
+
+                    loadImage((PostDetailGalleryViewHolder) holder);
+                } else {
+                    ((PostDetailGalleryViewHolder) holder).mNoPreviewLinkImageView.setVisibility(View.VISIBLE);
+                }
             } else if (holder instanceof PostDetailTextViewHolder) {
                 if (mPost.getSelfText() != null && !mPost.getSelfText().equals("")) {
                     ((PostDetailTextViewHolder) holder).mContentMarkdownView.setVisibility(View.VISIBLE);
@@ -1224,7 +1240,8 @@ public class CommentAndPostRecyclerViewAdapter extends RecyclerView.Adapter<Recy
 
     private void loadImage(PostDetailBaseViewHolder holder) {
         if (holder instanceof PostDetailImageAndGifAutoplayViewHolder) {
-            RequestBuilder<Drawable> imageRequestBuilder = mGlide.load(mPost.getPreviewUrl())
+            String url = mPost.getPostType() == Post.IMAGE_TYPE ? mPost.getPreviewUrl() : mPost.getUrl();
+            RequestBuilder<Drawable> imageRequestBuilder = mGlide.load(url)
                     .listener(new RequestListener<Drawable>() {
                         @Override
                         public boolean onLoadFailed(@Nullable GlideException e, Object model, Target<Drawable> target, boolean isFirstResource) {
@@ -1318,6 +1335,37 @@ public class CommentAndPostRecyclerViewAdapter extends RecyclerView.Adapter<Recy
                     imageRequestBuilder.into(((PostDetailLinkViewHolder) holder).mImageView);
                 }
             }
+        } else if (holder instanceof PostDetailGalleryViewHolder) {
+            RequestBuilder<Drawable> imageRequestBuilder = mGlide.load(mPost.getPreviewUrl())
+                    .listener(new RequestListener<Drawable>() {
+                        @Override
+                        public boolean onLoadFailed(@Nullable GlideException e, Object model, Target<Drawable> target, boolean isFirstResource) {
+                            ((PostDetailGalleryViewHolder) holder).mLoadImageProgressBar.setVisibility(View.GONE);
+                            ((PostDetailGalleryViewHolder) holder).mLoadImageErrorTextView.setVisibility(View.VISIBLE);
+                            ((PostDetailGalleryViewHolder) holder).mLoadImageErrorTextView.setOnClickListener(view -> {
+                                ((PostDetailGalleryViewHolder) holder).mLoadImageProgressBar.setVisibility(View.VISIBLE);
+                                ((PostDetailGalleryViewHolder) holder).mLoadImageErrorTextView.setVisibility(View.GONE);
+                                loadImage(holder);
+                            });
+                            return false;
+                        }
+
+                        @Override
+                        public boolean onResourceReady(Drawable resource, Object model, Target<Drawable> target, DataSource dataSource, boolean isFirstResource) {
+                            ((PostDetailGalleryViewHolder) holder).mLoadWrapper.setVisibility(View.GONE);
+                            return false;
+                        }
+                    });
+
+            if ((mPost.isNSFW() && mNeedBlurNsfw  && !(mPost.getPostType() == Post.GIF_TYPE && mAutoplayNsfwVideos)) || (mPost.isSpoiler() && mNeedBlurSpoiler)) {
+                imageRequestBuilder.apply(RequestOptions.bitmapTransform(new BlurTransformation(50, 10))).into(((PostDetailGalleryViewHolder) holder).mImageView);
+            } else {
+                if (mImageViewWidth > mPost.getPreviewWidth()) {
+                    imageRequestBuilder.override(Target.SIZE_ORIGINAL).into(((PostDetailGalleryViewHolder) holder).mImageView);
+                } else {
+                    imageRequestBuilder.into(((PostDetailGalleryViewHolder) holder).mImageView);
+                }
+            }
         }
     }
 
@@ -2706,6 +2754,103 @@ public class CommentAndPostRecyclerViewAdapter extends RecyclerView.Adapter<Recy
         }
     }
 
+    class PostDetailGalleryViewHolder extends PostDetailBaseViewHolder {
+        @BindView(R.id.icon_gif_image_view_item_post_detail_gallery)
+        AspectRatioGifImageView mIconGifImageView;
+        @BindView(R.id.subreddit_text_view_item_post_detail_gallery)
+        TextView mSubredditTextView;
+        @BindView(R.id.user_text_view_item_post_detail_gallery)
+        TextView mUserTextView;
+        @BindView(R.id.author_flair_text_view_item_post_detail_gallery)
+        TextView mAuthorFlairTextView;
+        @BindView(R.id.post_time_text_view_item_post_detail_gallery)
+        TextView mPostTimeTextView;
+        @BindView(R.id.title_text_view_item_post_detail_gallery)
+        TextView mTitleTextView;
+        @BindView(R.id.type_text_view_item_post_detail_gallery)
+        CustomTextView mTypeTextView;
+        @BindView(R.id.crosspost_image_view_item_post_detail_gallery)
+        ImageView mCrosspostImageView;
+        @BindView(R.id.archived_image_view_item_post_detail_gallery)
+        ImageView mArchivedImageView;
+        @BindView(R.id.locked_image_view_item_post_detail_gallery)
+        ImageView mLockedImageView;
+        @BindView(R.id.nsfw_text_view_item_post_detail_gallery)
+        CustomTextView mNSFWTextView;
+        @BindView(R.id.spoiler_custom_text_view_item_post_detail_gallery)
+        CustomTextView mSpoilerTextView;
+        @BindView(R.id.flair_custom_text_view_item_post_detail_gallery)
+        CustomTextView mFlairTextView;
+        @BindView(R.id.awards_text_view_item_post_detail_gallery)
+        TextView mAwardsTextView;
+        @BindView(R.id.image_view_wrapper_item_post_detail_gallery)
+        RelativeLayout mRelativeLayout;
+        @BindView(R.id.load_wrapper_item_post_detail_gallery)
+        RelativeLayout mLoadWrapper;
+        @BindView(R.id.progress_bar_item_post_detail_gallery)
+        ProgressBar mLoadImageProgressBar;
+        @BindView(R.id.load_image_error_text_view_item_post_detail_gallery)
+        TextView mLoadImageErrorTextView;
+        @BindView(R.id.image_view_item_post_detail_gallery)
+        AspectRatioGifImageView mImageView;
+        @BindView(R.id.image_view_no_preview_link_item_post_detail_gallery)
+        ImageView mNoPreviewLinkImageView;
+        @BindView(R.id.bottom_constraint_layout_item_post_detail_gallery)
+        ConstraintLayout mBottomConstraintLayout;
+        @BindView(R.id.plus_button_item_post_detail_gallery)
+        ImageView mUpvoteButton;
+        @BindView(R.id.score_text_view_item_post_detail_gallery)
+        TextView mScoreTextView;
+        @BindView(R.id.minus_button_item_post_detail_gallery)
+        ImageView mDownvoteButton;
+        @BindView(R.id.comments_count_item_post_detail_gallery)
+        TextView commentsCountTextView;
+        @BindView(R.id.save_button_item_post_detail_gallery)
+        ImageView mSaveButton;
+        @BindView(R.id.share_button_item_post_detail_gallery)
+        ImageView mShareButton;
+
+        PostDetailGalleryViewHolder(@NonNull View itemView) {
+            super(itemView);
+            ButterKnife.bind(this, itemView);
+            setBaseView(mIconGifImageView,
+                    mSubredditTextView,
+                    mUserTextView,
+                    mAuthorFlairTextView,
+                    mPostTimeTextView,
+                    mTitleTextView,
+                    mTypeTextView,
+                    mCrosspostImageView,
+                    mArchivedImageView,
+                    mLockedImageView,
+                    mNSFWTextView,
+                    mSpoilerTextView,
+                    mFlairTextView,
+                    mAwardsTextView,
+                    mBottomConstraintLayout,
+                    mUpvoteButton,
+                    mScoreTextView,
+                    mDownvoteButton,
+                    commentsCountTextView,
+                    mSaveButton,
+                    mShareButton);
+
+            mLoadImageProgressBar.setIndeterminateTintList(ColorStateList.valueOf(mColorAccent));
+            mLoadImageErrorTextView.setTextColor(mPrimaryTextColor);
+            mNoPreviewLinkImageView.setBackgroundColor(mNoPreviewLinkBackgroundColor);
+
+            mImageView.setOnClickListener(view -> {
+                Intent intent = new Intent(mActivity, ViewRedditGalleryActivity.class);
+                intent.putParcelableArrayListExtra(ViewRedditGalleryActivity.EXTRA_REDDIT_GALLERY, mPost.getGallery());
+                mActivity.startActivity(intent);
+            });
+
+            mNoPreviewLinkImageView.setOnClickListener(view -> {
+                mImageView.performClick();
+            });
+        }
+    }
+
     class PostDetailTextViewHolder extends PostDetailBaseViewHolder {
         @BindView(R.id.icon_gif_image_view_item_post_detail_text)
         AspectRatioGifImageView mIconGifImageView;

app/src/main/java/ml/docilealligator/infinityforreddit/Adapter/PostRecyclerViewAdapter.java

@@ -70,6 +70,7 @@ import ml.docilealligator.infinityforreddit.Activity.FilteredThingActivity;
 import ml.docilealligator.infinityforreddit.Activity.LinkResolverActivity;
 import ml.docilealligator.infinityforreddit.Activity.ViewImageOrGifActivity;
 import ml.docilealligator.infinityforreddit.Activity.ViewPostDetailActivity;
+import ml.docilealligator.infinityforreddit.Activity.ViewRedditGalleryActivity;
 import ml.docilealligator.infinityforreddit.Activity.ViewSubredditDetailActivity;
 import ml.docilealligator.infinityforreddit.Activity.ViewUserDetailActivity;
 import ml.docilealligator.infinityforreddit.Activity.ViewVideoActivity;
@@ -104,9 +105,10 @@ public class PostRecyclerViewAdapter extends PagedListAdapter<Post, RecyclerView
     private static final int VIEW_TYPE_POST_CARD_LINK_TYPE = 4;
     private static final int VIEW_TYPE_POST_CARD_NO_PREVIEW_LINK_TYPE = 5;
     private static final int VIEW_TYPE_POST_CARD_TEXT_TYPE = 6;
-    private static final int VIEW_TYPE_POST_COMPACT = 7;
-    private static final int VIEW_TYPE_ERROR = 8;
-    private static final int VIEW_TYPE_LOADING = 9;
+    private static final int VIEW_TYPE_POST_CARD_GALLERY_TYPE = 7;
+    private static final int VIEW_TYPE_POST_COMPACT = 8;
+    private static final int VIEW_TYPE_ERROR = 9;
+    private static final int VIEW_TYPE_LOADING = 10;
     private static final DiffUtil.ItemCallback<Post> DIFF_CALLBACK = new DiffUtil.ItemCallback<Post>() {
         @Override
         public boolean areItemsTheSame(@NonNull Post post, @NonNull Post t1) {
@@ -309,6 +311,8 @@ public class PostRecyclerViewAdapter extends PagedListAdapter<Post, RecyclerView
                             return VIEW_TYPE_POST_CARD_LINK_TYPE;
                         case Post.NO_PREVIEW_LINK_TYPE:
                             return VIEW_TYPE_POST_CARD_NO_PREVIEW_LINK_TYPE;
+                        case Post.GALLERY_TYPE:
+                            return VIEW_TYPE_POST_CARD_GALLERY_TYPE;
                         default:
                             return VIEW_TYPE_POST_CARD_TEXT_TYPE;
                     }
@@ -333,6 +337,8 @@ public class PostRecyclerViewAdapter extends PagedListAdapter<Post, RecyclerView
             return new PostLinkTypeViewHolder(LayoutInflater.from(parent.getContext()).inflate(R.layout.item_post_link, parent, false));
         } else if (viewType == VIEW_TYPE_POST_CARD_NO_PREVIEW_LINK_TYPE) {
             return new PostNoPreviewLinkTypeViewHolder(LayoutInflater.from(parent.getContext()).inflate(R.layout.item_post_no_preview_link, parent, false));
+        } else if (viewType == VIEW_TYPE_POST_CARD_GALLERY_TYPE) {
+            return new PostGalleryTypeViewHolder(LayoutInflater.from(parent.getContext()).inflate(R.layout.item_post_gallery, parent, false));
         } else if (viewType == VIEW_TYPE_POST_CARD_TEXT_TYPE) {
             return new PostTextTypeViewHolder(LayoutInflater.from(parent.getContext()).inflate(R.layout.item_post_text, parent, false));
         } else if (viewType == VIEW_TYPE_POST_COMPACT) {
@@ -586,12 +592,20 @@ public class PostRecyclerViewAdapter extends PagedListAdapter<Post, RecyclerView
                     loadImage(holder, post);
 
                     String domain = Uri.parse(post.getUrl()).getHost();
-                    ((PostLinkTypeViewHolder) holder).linkTextView.setVisibility(View.VISIBLE);
                     ((PostLinkTypeViewHolder) holder).linkTextView.setText(domain);
                 } else if (holder instanceof PostNoPreviewLinkTypeViewHolder) {
-                    String noPreviewLinkDomain = Uri.parse(post.getUrl()).getHost();
-                    ((PostNoPreviewLinkTypeViewHolder) holder).linkTextView.setVisibility(View.VISIBLE);
-                    ((PostNoPreviewLinkTypeViewHolder) holder).linkTextView.setText(noPreviewLinkDomain);
+                    ((PostNoPreviewLinkTypeViewHolder) holder).linkTextView.setText(Uri.parse(post.getUrl()).getHost());
+                } else if (holder instanceof PostGalleryTypeViewHolder) {
+                    if (post.getPreviewUrl() != null && !post.getPreviewUrl().equals("")) {
+                        ((PostGalleryTypeViewHolder) holder).imageWrapperRelativeLayout.setVisibility(View.VISIBLE);
+                        ((PostGalleryTypeViewHolder) holder).progressBar.setVisibility(View.VISIBLE);
+                        ((PostGalleryTypeViewHolder) holder).imageView
+                                .setRatio((float) post.getPreviewHeight() / post.getPreviewWidth());
+
+                        loadImage(holder, post);
+                    } else {
+                        ((PostGalleryTypeViewHolder) holder).noPreviewLinkImageView.setVisibility(View.VISIBLE);
+                    }
                 } else if (holder instanceof PostTextTypeViewHolder) {
                     if (post.getSelfTextPlainTrimmed() != null && !post.getSelfTextPlainTrimmed().equals("")) {
                         ((PostTextTypeViewHolder) holder).contentTextView.setVisibility(View.VISIBLE);
@@ -945,6 +959,38 @@ public class PostRecyclerViewAdapter extends PagedListAdapter<Post, RecyclerView
                     imageRequestBuilder.into(((PostLinkTypeViewHolder) holder).imageView);
                 }
             }
+        } else if (holder instanceof PostGalleryTypeViewHolder) {
+            RequestBuilder<Drawable> imageRequestBuilder = mGlide.load(post.getPreviewUrl()).listener(new RequestListener<Drawable>() {
+                @Override
+                public boolean onLoadFailed(@Nullable GlideException e, Object model, Target<Drawable> target, boolean isFirstResource) {
+                    ((PostGalleryTypeViewHolder) holder).progressBar.setVisibility(View.GONE);
+                    ((PostGalleryTypeViewHolder) holder).errorRelativeLayout.setVisibility(View.VISIBLE);
+                    ((PostGalleryTypeViewHolder) holder).errorRelativeLayout.setOnClickListener(view -> {
+                        ((PostGalleryTypeViewHolder) holder).progressBar.setVisibility(View.VISIBLE);
+                        ((PostGalleryTypeViewHolder) holder).errorRelativeLayout.setVisibility(View.GONE);
+                        loadImage(holder, post);
+                    });
+                    return false;
+                }
+
+                @Override
+                public boolean onResourceReady(Drawable resource, Object model, Target<Drawable> target, DataSource dataSource, boolean isFirstResource) {
+                    ((PostGalleryTypeViewHolder) holder).errorRelativeLayout.setVisibility(View.GONE);
+                    ((PostGalleryTypeViewHolder) holder).progressBar.setVisibility(View.GONE);
+                    return false;
+                }
+            });
+
+            if ((post.isNSFW() && mNeedBlurNSFW && !(post.getPostType() == Post.GIF_TYPE && mAutoplayNsfwVideos)) || post.isSpoiler() && mNeedBlurSpoiler) {
+                imageRequestBuilder.apply(RequestOptions.bitmapTransform(new BlurTransformation(50, 10)))
+                        .into(((PostGalleryTypeViewHolder) holder).imageView);
+            } else {
+                if (mImageViewWidth > post.getPreviewWidth()) {
+                    imageRequestBuilder.override(Target.SIZE_ORIGINAL).into(((PostGalleryTypeViewHolder) holder).imageView);
+                } else {
+                    imageRequestBuilder.into(((PostGalleryTypeViewHolder) holder).imageView);
+                }
+            }
         } else if (holder instanceof PostCompactBaseViewHolder) {
             String previewUrl = post.getThumbnailPreviewUrl().equals("") ? post.getPreviewUrl() : post.getThumbnailPreviewUrl();
             RequestBuilder<Drawable> imageRequestBuilder = mGlide.load(previewUrl)
@@ -1107,6 +1153,11 @@ public class PostRecyclerViewAdapter extends PagedListAdapter<Post, RecyclerView
                 mGlide.clear(((PostLinkTypeViewHolder) holder).imageView);
                 ((PostLinkTypeViewHolder) holder).imageView.getLayoutParams().height = FrameLayout.LayoutParams.WRAP_CONTENT;
                 ((PostLinkTypeViewHolder) holder).errorRelativeLayout.setVisibility(View.GONE);
+            } else if (holder instanceof PostGalleryTypeViewHolder) {
+                mGlide.clear(((PostGalleryTypeViewHolder) holder).imageView);
+                ((PostGalleryTypeViewHolder) holder).imageWrapperRelativeLayout.setVisibility(View.GONE);
+                ((PostGalleryTypeViewHolder) holder).errorRelativeLayout.setVisibility(View.GONE);
+                ((PostGalleryTypeViewHolder) holder).noPreviewLinkImageView.setVisibility(View.GONE);
             } else if (holder instanceof PostTextTypeViewHolder) {
                 ((PostTextTypeViewHolder) holder).contentTextView.setVisibility(View.GONE);
             }
@@ -2233,6 +2284,109 @@ public class PostRecyclerViewAdapter extends PagedListAdapter<Post, RecyclerView
         }
     }
 
+    class PostGalleryTypeViewHolder extends PostBaseViewHolder {
+        @BindView(R.id.card_view_item_post_gallery_type)
+        MaterialCardView cardView;
+        @BindView(R.id.icon_gif_image_view_item_post_gallery_type)
+        AspectRatioGifImageView iconGifImageView;
+        @BindView(R.id.subreddit_name_text_view_item_post_gallery_type)
+        TextView subredditTextView;
+        @BindView(R.id.user_text_view_item_post_gallery_type)
+        TextView userTextView;
+        @BindView(R.id.stickied_post_image_view_item_post_gallery_type)
+        ImageView stickiedPostImageView;
+        @BindView(R.id.post_time_text_view_item_post_gallery_type)
+        TextView postTimeTextView;
+        @BindView(R.id.title_text_view_item_post_gallery_type)
+        TextView titleTextView;
+        @BindView(R.id.type_text_view_item_post_gallery_type)
+        CustomTextView typeTextView;
+        @BindView(R.id.archived_image_view_item_post_gallery_type)
+        ImageView archivedImageView;
+        @BindView(R.id.locked_image_view_item_post_gallery_type)
+        ImageView lockedImageView;
+        @BindView(R.id.crosspost_image_view_item_post_gallery_type)
+        ImageView crosspostImageView;
+        @BindView(R.id.nsfw_text_view_item_post_gallery_type)
+        CustomTextView nsfwTextView;
+        @BindView(R.id.spoiler_custom_text_view_item_post_gallery_type)
+        CustomTextView spoilerTextView;
+        @BindView(R.id.flair_custom_text_view_item_post_gallery_type)
+        CustomTextView flairTextView;
+        @BindView(R.id.awards_text_view_item_post_gallery_type)
+        CustomTextView awardsTextView;
+        @BindView(R.id.image_wrapper_relative_layout_item_post_gallery)
+        RelativeLayout imageWrapperRelativeLayout;
+        @BindView(R.id.progress_bar_item_post_gallery_type)
+        ProgressBar progressBar;
+        @BindView(R.id.image_view_item_post_gallery_type)
+        AspectRatioGifImageView imageView;
+        @BindView(R.id.load_image_error_relative_layout_item_post_gallery_type)
+        RelativeLayout errorRelativeLayout;
+        @BindView(R.id.load_image_error_text_view_item_post_gallery_type)
+        TextView errorTextView;
+        @BindView(R.id.image_view_no_preview_gallery_item_post_gallery_type)
+        ImageView noPreviewLinkImageView;
+        @BindView(R.id.bottom_constraint_layout_item_post_gallery_type)
+        ConstraintLayout bottomConstraintLayout;
+        @BindView(R.id.plus_button_item_post_gallery_type)
+        ImageView upvoteButton;
+        @BindView(R.id.score_text_view_item_post_gallery_type)
+        TextView scoreTextView;
+        @BindView(R.id.minus_button_item_post_gallery_type)
+        ImageView downvoteButton;
+        @BindView(R.id.comments_count_item_post_gallery_type)
+        TextView commentsCountTextView;
+        @BindView(R.id.save_button_item_post_gallery_type)
+        ImageView saveButton;
+        @BindView(R.id.share_button_item_post_gallery_type)
+        ImageView shareButton;
+
+        PostGalleryTypeViewHolder(View itemView) {
+            super(itemView);
+            ButterKnife.bind(this, itemView);
+            setBaseView(cardView,
+                    iconGifImageView,
+                    subredditTextView,
+                    userTextView,
+                    stickiedPostImageView,
+                    postTimeTextView,
+                    titleTextView,
+                    typeTextView,
+                    archivedImageView,
+                    lockedImageView,
+                    crosspostImageView,
+                    nsfwTextView,
+                    spoilerTextView,
+                    flairTextView,
+                    awardsTextView,
+                    bottomConstraintLayout,
+                    upvoteButton,
+                    scoreTextView,
+                    downvoteButton,
+                    commentsCountTextView,
+                    saveButton,
+                    shareButton);
+
+            noPreviewLinkImageView.setBackgroundColor(mNoPreviewLinkBackgroundColor);
+            progressBar.setIndeterminateTintList(ColorStateList.valueOf(mColorAccent));
+            errorTextView.setTextColor(mPrimaryTextColor);
+
+            imageView.setOnClickListener(view -> {
+                Post post = getItem(getAdapterPosition());
+                if (post != null) {
+                    Intent intent = new Intent(mActivity, ViewRedditGalleryActivity.class);
+                    intent.putParcelableArrayListExtra(ViewRedditGalleryActivity.EXTRA_REDDIT_GALLERY, post.getGallery());
+                    mActivity.startActivity(intent);
+                }
+            });
+
+            noPreviewLinkImageView.setOnClickListener(view -> {
+                imageView.performClick();
+            });
+        }
+    }
+
     class PostTextTypeViewHolder extends PostBaseViewHolder {
         @BindView(R.id.card_view_item_post_text_type)
         MaterialCardView cardView;

app/src/main/java/ml/docilealligator/infinityforreddit/AppComponent.java

@@ -38,6 +38,7 @@ import ml.docilealligator.infinityforreddit.Activity.InboxActivity;
 import ml.docilealligator.infinityforreddit.Activity.ViewMultiRedditDetailActivity;
 import ml.docilealligator.infinityforreddit.Activity.ViewPostDetailActivity;
 import ml.docilealligator.infinityforreddit.Activity.ViewPrivateMessagesActivity;
+import ml.docilealligator.infinityforreddit.Activity.ViewRedditGalleryActivity;
 import ml.docilealligator.infinityforreddit.Activity.ViewSubredditDetailActivity;
 import ml.docilealligator.infinityforreddit.Activity.ViewUserDetailActivity;
 import ml.docilealligator.infinityforreddit.Activity.ViewVideoActivity;
@@ -52,6 +53,7 @@ import ml.docilealligator.infinityforreddit.Fragment.SubredditListingFragment;
 import ml.docilealligator.infinityforreddit.Fragment.SubscribedSubredditsListingFragment;
 import ml.docilealligator.infinityforreddit.Fragment.UserListingFragment;
 import ml.docilealligator.infinityforreddit.Fragment.ViewImgurVideoFragment;
+import ml.docilealligator.infinityforreddit.Fragment.ViewRedditGalleryVideoFragment;
 import ml.docilealligator.infinityforreddit.Service.DownloadRedditVideoService;
 import ml.docilealligator.infinityforreddit.Service.SubmitPostService;
 import ml.docilealligator.infinityforreddit.Settings.AdvancedPreferenceFragment;
@@ -182,4 +184,8 @@ public interface AppComponent {
     void inject(SendPrivateMessageActivity sendPrivateMessageActivity);
 
     void inject(VideoPreferenceFragment videoPreferenceFragment);
+
+    void inject(ViewRedditGalleryActivity viewRedditGalleryActivity);
+
+    void inject(ViewRedditGalleryVideoFragment viewRedditGalleryVideoFragment);
 }

app/src/main/java/ml/docilealligator/infinityforreddit/Fragment/ViewImgurImageFragment.java

@@ -139,14 +139,14 @@ public class ViewImgurImageFragment extends Fragment {
 
     @Override
     public void onCreateOptionsMenu(@NonNull Menu menu, @NonNull MenuInflater inflater) {
-        inflater.inflate(R.menu.view_imgur_image_fragments, menu);
+        inflater.inflate(R.menu.view_imgur_image_fragment, menu);
         super.onCreateOptionsMenu(menu, inflater);
     }
 
     @Override
     public boolean onOptionsItemSelected(@NonNull MenuItem item) {
         switch (item.getItemId()) {
-            case R.id.action_download_view_imgur_image_fragments:
+            case R.id.action_download_view_imgur_image_fragment:
                 if (isDownloading) {
                     return false;
                 }
@@ -172,7 +172,7 @@ public class ViewImgurImageFragment extends Fragment {
                 }
 
                 return true;
-            case R.id.action_share_view_imgur_image_fragments:
+            case R.id.action_share_view_imgur_image_fragment:
                 glide.asBitmap().load(imgurMedia.getLink()).into(new CustomTarget<Bitmap>() {
 
                     @Override
@@ -212,7 +212,7 @@ public class ViewImgurImageFragment extends Fragment {
                     }
                 });
                 return true;
-            case R.id.action_set_wallpaper_view_imgur_image_fragments:
+            case R.id.action_set_wallpaper_view_imgur_image_fragment:
                 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
                     SetAsWallpaperBottomSheetFragment setAsWallpaperBottomSheetFragment = new SetAsWallpaperBottomSheetFragment();
                     Bundle bundle = new Bundle();

app/src/main/java/ml/docilealligator/infinityforreddit/Fragment/ViewImgurVideoFragment.java

@@ -52,9 +52,6 @@ import ml.docilealligator.infinityforreddit.MediaDownloaderImpl;
 import ml.docilealligator.infinityforreddit.R;
 import ml.docilealligator.infinityforreddit.Utils.SharedPreferencesUtils;
 
-/**
- * A simple {@link Fragment} subclass.
- */
 public class ViewImgurVideoFragment extends Fragment {
 
     public static final String EXTRA_IMGUR_VIDEO = "EIV";
@@ -154,7 +151,7 @@ public class ViewImgurVideoFragment extends Fragment {
 
     @Override
     public boolean onOptionsItemSelected(@NonNull MenuItem item) {
-        if (item.getItemId() == R.id.action_download_view_imgur_image_fragments) {
+        if (item.getItemId() == R.id.action_download_view_imgur_video_fragment) {
             isDownloading = true;
             if (Build.VERSION.SDK_INT >= 23) {
                 if (ContextCompat.checkSelfPermission(activity,

app/src/main/java/ml/docilealligator/infinityforreddit/Fragment/ViewRedditGalleryImageOrGifFragment.java

@@ -0,0 +1,297 @@
+package ml.docilealligator.infinityforreddit.Fragment;
+
+import android.Manifest;
+import android.content.Context;
+import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.graphics.Bitmap;
+import android.graphics.drawable.Drawable;
+import android.net.Uri;
+import android.os.Build;
+import android.os.Bundle;
+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.LinearLayout;
+import android.widget.ProgressBar;
+import android.widget.Toast;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.core.app.ActivityCompat;
+import androidx.core.content.ContextCompat;
+import androidx.core.content.FileProvider;
+import androidx.fragment.app.Fragment;
+
+import com.bumptech.glide.Glide;
+import com.bumptech.glide.RequestManager;
+import com.bumptech.glide.load.DataSource;
+import com.bumptech.glide.load.engine.GlideException;
+import com.bumptech.glide.load.resource.gif.GifDrawable;
+import com.bumptech.glide.request.RequestListener;
+import com.bumptech.glide.request.target.CustomTarget;
+import com.bumptech.glide.request.target.Target;
+import com.bumptech.glide.request.transition.Transition;
+import com.davemorrissey.labs.subscaleview.ImageSource;
+import com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView;
+
+import java.io.File;
+
+import butterknife.BindView;
+import butterknife.ButterKnife;
+import ml.docilealligator.infinityforreddit.Activity.ViewRedditGalleryActivity;
+import ml.docilealligator.infinityforreddit.AsyncTask.SaveGIFToFileAsyncTask;
+import ml.docilealligator.infinityforreddit.AsyncTask.SaveImageToFileAsyncTask;
+import ml.docilealligator.infinityforreddit.BottomSheetFragment.SetAsWallpaperBottomSheetFragment;
+import ml.docilealligator.infinityforreddit.BuildConfig;
+import ml.docilealligator.infinityforreddit.MediaDownloader;
+import ml.docilealligator.infinityforreddit.MediaDownloaderImpl;
+import ml.docilealligator.infinityforreddit.Post.Post;
+import ml.docilealligator.infinityforreddit.R;
+import ml.docilealligator.infinityforreddit.SetAsWallpaperCallback;
+
+public class ViewRedditGalleryImageOrGifFragment extends Fragment {
+
+    public static final String EXTRA_REDDIT_GALLERY_MEDIA = "ERGM";
+    private static final int PERMISSION_REQUEST_WRITE_EXTERNAL_STORAGE = 0;
+
+    @BindView(R.id.progress_bar_view_reddit_gallery_image_or_gif_fragment)
+    ProgressBar progressBar;
+    @BindView(R.id.image_view_view_reddit_gallery_image_or_gif_fragment)
+    SubsamplingScaleImageView imageView;
+    @BindView(R.id.load_image_error_linear_layout_view_reddit_gallery_image_or_gif_fragment)
+    LinearLayout errorLinearLayout;
+
+    private ViewRedditGalleryActivity activity;
+    private RequestManager glide;
+    private MediaDownloader mediaDownloader;
+    private Post.Gallery media;
+    private boolean isDownloading = false;
+    private boolean isActionBarHidden = false;
+
+    public ViewRedditGalleryImageOrGifFragment() {
+        // Required empty public constructor
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        View rootView = inflater.inflate(R.layout.fragment_view_reddit_gallery_image_or_gif, container, false);
+
+        ButterKnife.bind(this, rootView);
+
+        setHasOptionsMenu(true);
+
+        media = getArguments().getParcelable(EXTRA_REDDIT_GALLERY_MEDIA);
+        glide = Glide.with(activity);
+        mediaDownloader = new MediaDownloaderImpl();
+        loadImage();
+
+        imageView.setOnClickListener(view -> {
+            if (isActionBarHidden) {
+                activity.getWindow().getDecorView().setSystemUiVisibility(
+                        View.SYSTEM_UI_FLAG_LAYOUT_STABLE
+                                | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
+                                | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN);
+                isActionBarHidden = false;
+            } else {
+                activity.getWindow().getDecorView().setSystemUiVisibility(
+                        View.SYSTEM_UI_FLAG_LAYOUT_STABLE
+                                | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
+                                | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
+                                | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
+                                | View.SYSTEM_UI_FLAG_FULLSCREEN
+                                | View.SYSTEM_UI_FLAG_IMMERSIVE);
+                isActionBarHidden = true;
+            }
+        });
+
+        return rootView;
+    }
+
+    private void loadImage() {
+        glide.asBitmap().load(media.url).listener(new RequestListener<Bitmap>() {
+            @Override
+            public boolean onLoadFailed(@Nullable GlideException e, Object model, Target<Bitmap> target, boolean isFirstResource) {
+                progressBar.setVisibility(View.GONE);
+                errorLinearLayout.setVisibility(View.VISIBLE);
+                return false;
+            }
+
+            @Override
+            public boolean onResourceReady(Bitmap resource, Object model, Target<Bitmap> target, DataSource dataSource, boolean isFirstResource) {
+                progressBar.setVisibility(View.GONE);
+                return false;
+            }
+        }).into(new CustomTarget<Bitmap>() {
+            @Override
+            public void onResourceReady(@NonNull Bitmap resource, @Nullable Transition<? super Bitmap> transition) {
+                imageView.setImage(ImageSource.bitmap(resource));
+            }
+
+            @Override
+            public void onLoadCleared(@Nullable Drawable placeholder) {
+
+            }
+        });
+    }
+
+    @Override
+    public void onCreateOptionsMenu(@NonNull Menu menu, @NonNull MenuInflater inflater) {
+        inflater.inflate(R.menu.view_reddit_gallery_image_or_gif_fragment, menu);
+        super.onCreateOptionsMenu(menu, inflater);
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(@NonNull MenuItem item) {
+        switch (item.getItemId()) {
+            case R.id.action_download_view_reddit_gallery_image_or_gif_fragment:
+                if (isDownloading) {
+                    return false;
+                }
+
+                isDownloading = true;
+
+                if (Build.VERSION.SDK_INT >= 23) {
+                    if (ContextCompat.checkSelfPermission(activity,
+                            Manifest.permission.WRITE_EXTERNAL_STORAGE)
+                            != PackageManager.PERMISSION_GRANTED) {
+
+                        // Permission is not granted
+                        // No explanation needed; request the permission
+                        ActivityCompat.requestPermissions(activity,
+                                new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE},
+                                PERMISSION_REQUEST_WRITE_EXTERNAL_STORAGE);
+                    } else {
+                        // Permission has already been granted
+                        mediaDownloader.download(media.url, media.fileName, getContext());
+                    }
+                } else {
+                    mediaDownloader.download(media.url, media.fileName, getContext());
+                }
+
+                return true;
+            case R.id.action_share_view_reddit_gallery_image_or_gif_fragment:
+                if (media.mediaType == Post.Gallery.TYPE_GIF) {
+                    shareGif();
+                } else {
+                    shareImage();
+                }
+                return true;
+            case R.id.action_set_wallpaper_view_reddit_gallery_image_or_gif_fragment:
+                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
+                    SetAsWallpaperBottomSheetFragment setAsWallpaperBottomSheetFragment = new SetAsWallpaperBottomSheetFragment();
+                    Bundle bundle = new Bundle();
+                    bundle.putInt(SetAsWallpaperBottomSheetFragment.EXTRA_VIEW_PAGER_POSITION, activity.getCurrentPagePosition());
+                    setAsWallpaperBottomSheetFragment.setArguments(bundle);
+                    setAsWallpaperBottomSheetFragment.show(activity.getSupportFragmentManager(), setAsWallpaperBottomSheetFragment.getTag());
+                } else {
+                    ((SetAsWallpaperCallback) activity).setToBoth(activity.getCurrentPagePosition());
+                }
+                return true;
+        }
+
+        return false;
+    }
+
+    private void shareImage() {
+        glide.asBitmap().load(media.url).into(new CustomTarget<Bitmap>() {
+            @Override
+            public void onResourceReady(@NonNull Bitmap resource, @Nullable Transition<? super Bitmap> transition) {
+                if (activity.getExternalCacheDir() != null) {
+                    Toast.makeText(activity, R.string.save_image_first, Toast.LENGTH_SHORT).show();
+                    new SaveImageToFileAsyncTask(resource, activity.getExternalCacheDir().getPath(),
+                            media.fileName,
+                            new SaveImageToFileAsyncTask.SaveImageToFileAsyncTaskListener() {
+                                @Override
+                                public void saveSuccess(File imageFile) {
+                                    Uri uri = FileProvider.getUriForFile(activity,
+                                            BuildConfig.APPLICATION_ID + ".provider", imageFile);
+                                    Intent shareIntent = new Intent();
+                                    shareIntent.setAction(Intent.ACTION_SEND);
+                                    shareIntent.putExtra(Intent.EXTRA_STREAM, uri);
+                                    shareIntent.setType("image/*");
+                                    shareIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
+                                    startActivity(Intent.createChooser(shareIntent, getString(R.string.share)));
+                                }
+
+                                @Override
+                                public void saveFailed() {
+                                    Toast.makeText(activity,
+                                            R.string.cannot_save_image, Toast.LENGTH_SHORT).show();
+                                }
+                            }).execute();
+                } else {
+                    Toast.makeText(activity,
+                            R.string.cannot_get_storage, Toast.LENGTH_SHORT).show();
+                }
+            }
+
+            @Override
+            public void onLoadCleared(@Nullable Drawable placeholder) {
+
+            }
+        });
+    }
+
+    private void shareGif() {
+        Toast.makeText(activity, R.string.save_gif_first, Toast.LENGTH_SHORT).show();
+        glide.asGif().load(media.url).listener(new RequestListener<GifDrawable>() {
+            @Override
+            public boolean onLoadFailed(@Nullable GlideException e, Object model, Target<GifDrawable> target, boolean isFirstResource) {
+                return false;
+            }
+
+            @Override
+            public boolean onResourceReady(GifDrawable resource, Object model, Target<GifDrawable> target, DataSource dataSource, boolean isFirstResource) {
+                if (activity.getExternalCacheDir() != null) {
+                    new SaveGIFToFileAsyncTask(resource, activity.getExternalCacheDir().getPath(), media.fileName,
+                            new SaveGIFToFileAsyncTask.SaveGIFToFileAsyncTaskListener() {
+                                @Override
+                                public void saveSuccess(File imageFile) {
+                                    Uri uri = FileProvider.getUriForFile(activity,
+                                            BuildConfig.APPLICATION_ID + ".provider", imageFile);
+                                    Intent shareIntent = new Intent();
+                                    shareIntent.setAction(Intent.ACTION_SEND);
+                                    shareIntent.putExtra(Intent.EXTRA_STREAM, uri);
+                                    shareIntent.setType("image/*");
+                                    shareIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
+                                    startActivity(Intent.createChooser(shareIntent, getString(R.string.share)));
+                                }
+
+                                @Override
+                                public void saveFailed() {
+                                    Toast.makeText(activity,
+                                            R.string.cannot_save_gif, Toast.LENGTH_SHORT).show();
+                                }
+                            }).execute();
+                } else {
+                    Toast.makeText(activity,
+                            R.string.cannot_get_storage, Toast.LENGTH_SHORT).show();
+                }
+                return false;
+            }
+        }).submit();
+    }
+
+    @Override
+    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
+        if (requestCode == PERMISSION_REQUEST_WRITE_EXTERNAL_STORAGE && grantResults.length > 0) {
+            if (grantResults[0] == PackageManager.PERMISSION_DENIED) {
+                Toast.makeText(activity, R.string.no_storage_permission, Toast.LENGTH_SHORT).show();
+            } else if (grantResults[0] == PackageManager.PERMISSION_GRANTED && isDownloading) {
+                mediaDownloader.download(media.url, media.fileName, getContext());
+            }
+            isDownloading = false;
+        }
+    }
+
+    @Override
+    public void onAttach(@NonNull Context context) {
+        super.onAttach(context);
+        activity = (ViewRedditGalleryActivity) context;
+    }
+}

app/src/main/java/ml/docilealligator/infinityforreddit/Fragment/ViewRedditGalleryVideoFragment.java

@@ -0,0 +1,285 @@
+package ml.docilealligator.infinityforreddit.Fragment;
+
+import android.Manifest;
+import android.app.Activity;
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.content.pm.PackageManager;
+import android.content.res.Configuration;
+import android.media.AudioManager;
+import android.net.Uri;
+import android.os.Build;
+import android.os.Bundle;
+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.ImageButton;
+import android.widget.LinearLayout;
+import android.widget.Toast;
+
+import androidx.annotation.NonNull;
+import androidx.core.app.ActivityCompat;
+import androidx.core.content.ContextCompat;
+import androidx.fragment.app.Fragment;
+
+import com.google.android.exoplayer2.ExoPlayerFactory;
+import com.google.android.exoplayer2.Player;
+import com.google.android.exoplayer2.SimpleExoPlayer;
+import com.google.android.exoplayer2.source.ProgressiveMediaSource;
+import com.google.android.exoplayer2.source.TrackGroupArray;
+import com.google.android.exoplayer2.trackselection.AdaptiveTrackSelection;
+import com.google.android.exoplayer2.trackselection.DefaultTrackSelector;
+import com.google.android.exoplayer2.trackselection.TrackSelection;
+import com.google.android.exoplayer2.trackselection.TrackSelectionArray;
+import com.google.android.exoplayer2.trackselection.TrackSelector;
+import com.google.android.exoplayer2.ui.PlayerView;
+import com.google.android.exoplayer2.upstream.DataSource;
+import com.google.android.exoplayer2.upstream.DefaultDataSourceFactory;
+import com.google.android.exoplayer2.util.Util;
+
+import javax.inject.Inject;
+import javax.inject.Named;
+
+import butterknife.BindView;
+import butterknife.ButterKnife;
+import ml.docilealligator.infinityforreddit.Infinity;
+import ml.docilealligator.infinityforreddit.MediaDownloader;
+import ml.docilealligator.infinityforreddit.MediaDownloaderImpl;
+import ml.docilealligator.infinityforreddit.Post.Post;
+import ml.docilealligator.infinityforreddit.R;
+import ml.docilealligator.infinityforreddit.Utils.SharedPreferencesUtils;
+
+public class ViewRedditGalleryVideoFragment extends Fragment {
+
+    public static final String EXTRA_REDDIT_GALLERY_VIDEO = "EIV";
+    private static final String IS_MUTE_STATE = "IMS";
+    private static final String POSITION_STATE = "PS";
+    private static final int PERMISSION_REQUEST_WRITE_EXTERNAL_STORAGE = 0;
+    @BindView(R.id.player_view_view_reddit_gallery_video_fragment)
+    PlayerView videoPlayerView;
+    @BindView(R.id.mute_exo_playback_control_view)
+    ImageButton muteButton;
+    private Activity activity;
+    private Post.Gallery galleryVideo;
+    private SimpleExoPlayer player;
+    private DataSource.Factory dataSourceFactory;
+    private MediaDownloader mediaDownloader;
+    private boolean wasPlaying = false;
+    private boolean isMute = false;
+    private boolean isDownloading = false;
+    @Inject
+    @Named("default")
+    SharedPreferences mSharedPreferences;
+
+    public ViewRedditGalleryVideoFragment() {
+        // Required empty public constructor
+    }
+
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        View rootView = inflater.inflate(R.layout.fragment_view_reddit_gallery_video, container, false);
+
+        ((Infinity) activity.getApplication()).getAppComponent().inject(this);
+
+        ButterKnife.bind(this, rootView);
+
+        setHasOptionsMenu(true);
+
+        activity.setVolumeControlStream(AudioManager.STREAM_MUSIC);
+
+        galleryVideo = getArguments().getParcelable(EXTRA_REDDIT_GALLERY_VIDEO);
+
+        if (!mSharedPreferences.getBoolean(SharedPreferencesUtils.VIDEO_PLAYER_IGNORE_NAV_BAR, false)) {
+            if (getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT || getResources().getBoolean(R.bool.isTablet)) {
+                //Set player controller bottom margin in order to display it above the navbar
+                int resourceId = getResources().getIdentifier("navigation_bar_height", "dimen", "android");
+                LinearLayout controllerLinearLayout = rootView.findViewById(R.id.linear_layout_exo_playback_control_view);
+                ViewGroup.MarginLayoutParams params = (ViewGroup.MarginLayoutParams) controllerLinearLayout.getLayoutParams();
+                params.bottomMargin = getResources().getDimensionPixelSize(resourceId);
+            } else {
+                //Set player controller right margin in order to display it above the navbar
+                int resourceId = getResources().getIdentifier("navigation_bar_height", "dimen", "android");
+                LinearLayout controllerLinearLayout = rootView.findViewById(R.id.linear_layout_exo_playback_control_view);
+                ViewGroup.MarginLayoutParams params = (ViewGroup.MarginLayoutParams) controllerLinearLayout.getLayoutParams();
+                params.rightMargin = getResources().getDimensionPixelSize(resourceId);
+            }
+        }
+
+        videoPlayerView.setControllerVisibilityListener(visibility -> {
+            switch (visibility) {
+                case View.GONE:
+                    activity.getWindow().getDecorView().setSystemUiVisibility(
+                            View.SYSTEM_UI_FLAG_LAYOUT_STABLE
+                                    | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
+                                    | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
+                                    | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
+                                    | View.SYSTEM_UI_FLAG_FULLSCREEN
+                                    | View.SYSTEM_UI_FLAG_IMMERSIVE);
+                    break;
+                case View.VISIBLE:
+                    activity.getWindow().getDecorView().setSystemUiVisibility(
+                            View.SYSTEM_UI_FLAG_LAYOUT_STABLE
+                                    | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
+                                    | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN);
+            }
+        });
+
+        mediaDownloader = new MediaDownloaderImpl();
+
+        TrackSelection.Factory videoTrackSelectionFactory = new AdaptiveTrackSelection.Factory();
+        TrackSelector trackSelector = new DefaultTrackSelector(videoTrackSelectionFactory);
+        player = ExoPlayerFactory.newSimpleInstance(activity, trackSelector);
+        videoPlayerView.setPlayer(player);
+        dataSourceFactory = new DefaultDataSourceFactory(activity,
+                Util.getUserAgent(activity, "Infinity"));
+        player.prepare(new ProgressiveMediaSource.Factory(dataSourceFactory).createMediaSource(Uri.parse(galleryVideo.url)));
+        preparePlayer(savedInstanceState);
+
+        return rootView;
+    }
+
+    @Override
+    public void onCreateOptionsMenu(@NonNull Menu menu, @NonNull MenuInflater inflater) {
+        inflater.inflate(R.menu.view_reddit_gallery_video_fragment, menu);
+        super.onCreateOptionsMenu(menu, inflater);
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(@NonNull MenuItem item) {
+        if (item.getItemId() == R.id.action_download_view_reddit_gallery_video_fragment) {
+            isDownloading = true;
+            if (Build.VERSION.SDK_INT >= 23) {
+                if (ContextCompat.checkSelfPermission(activity,
+                        Manifest.permission.WRITE_EXTERNAL_STORAGE)
+                        != PackageManager.PERMISSION_GRANTED) {
+
+                    // Permission is not granted
+                    // No explanation needed; request the permission
+                    ActivityCompat.requestPermissions(activity,
+                            new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE},
+                            PERMISSION_REQUEST_WRITE_EXTERNAL_STORAGE);
+                } else {
+                    // Permission has already been granted
+                    download();
+                }
+            } else {
+                download();
+            }
+            return true;
+        }
+        return false;
+    }
+
+    @Override
+    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
+        if (requestCode == PERMISSION_REQUEST_WRITE_EXTERNAL_STORAGE && grantResults.length > 0) {
+            if (grantResults[0] == PackageManager.PERMISSION_DENIED) {
+                Toast.makeText(activity, R.string.no_storage_permission, Toast.LENGTH_SHORT).show();
+            } else if (grantResults[0] == PackageManager.PERMISSION_GRANTED && isDownloading) {
+                download();
+            }
+            isDownloading = false;
+        }
+    }
+
+    private void download() {
+        isDownloading = false;
+
+        mediaDownloader.download(galleryVideo.url, galleryVideo.fileName, getContext());
+    }
+
+    private void preparePlayer(Bundle savedInstanceState) {
+        player.setRepeatMode(Player.REPEAT_MODE_ALL);
+        wasPlaying = true;
+
+        boolean muteVideo = mSharedPreferences.getBoolean(SharedPreferencesUtils.MUTE_VIDEO, false);
+
+        if (savedInstanceState != null) {
+            long position = savedInstanceState.getLong(POSITION_STATE);
+            if (position > 0) {
+                player.seekTo(position);
+            }
+            isMute = savedInstanceState.getBoolean(IS_MUTE_STATE);
+            if (isMute) {
+                player.setVolume(0f);
+                muteButton.setImageResource(R.drawable.ic_mute_24dp);
+            } else {
+                player.setVolume(1f);
+                muteButton.setImageResource(R.drawable.ic_unmute_24dp);
+            }
+        } else if (muteVideo) {
+            isMute = true;
+            player.setVolume(0f);
+            muteButton.setImageResource(R.drawable.ic_mute_24dp);
+        } else {
+            muteButton.setImageResource(R.drawable.ic_unmute_24dp);
+        }
+
+        player.addListener(new Player.EventListener() {
+            @Override
+            public void onTracksChanged(TrackGroupArray trackGroups, TrackSelectionArray trackSelections) {
+                if (!trackGroups.isEmpty()) {
+                    for (int i = 0; i < trackGroups.length; i++) {
+                        String mimeType = trackGroups.get(i).getFormat(0).sampleMimeType;
+                        if (mimeType != null && mimeType.contains("audio")) {
+                            muteButton.setVisibility(View.VISIBLE);
+                            muteButton.setOnClickListener(view -> {
+                                if (isMute) {
+                                    isMute = false;
+                                    player.setVolume(1f);
+                                    muteButton.setImageResource(R.drawable.ic_unmute_24dp);
+                                } else {
+                                    isMute = true;
+                                    player.setVolume(0f);
+                                    muteButton.setImageResource(R.drawable.ic_mute_24dp);
+                                }
+                            });
+                            break;
+                        }
+                    }
+                } else {
+                    muteButton.setVisibility(View.GONE);
+                }
+            }
+        });
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+        if (wasPlaying) {
+            player.setPlayWhenReady(true);
+        }
+    }
+
+    @Override
+    public void onPause() {
+        super.onPause();
+        wasPlaying = player.getPlayWhenReady();
+        player.setPlayWhenReady(false);
+    }
+
+    @Override
+    public void onSaveInstanceState(@NonNull Bundle outState) {
+        super.onSaveInstanceState(outState);
+        outState.putBoolean(IS_MUTE_STATE, isMute);
+        outState.putLong(POSITION_STATE, player.getCurrentPosition());
+    }
+
+    @Override
+    public void onDestroy() {
+        super.onDestroy();
+        player.release();
+    }
+
+    @Override
+    public void onAttach(@NonNull Context context) {
+        super.onAttach(context);
+        activity = (Activity) context;
+    }
+}

app/src/main/java/ml/docilealligator/infinityforreddit/Post/ParsePost.java

@@ -8,6 +8,7 @@ import org.json.JSONArray;
 import org.json.JSONException;
 import org.json.JSONObject;
 
+import java.util.ArrayList;
 import java.util.LinkedHashSet;
 import java.util.Locale;
 
@@ -388,6 +389,30 @@ public class ParsePost {
                     post.setUrl(url);
                 }
             } catch (IllegalArgumentException ignore) { }
+        } else if (post.getPostType() == Post.LINK_TYPE || post.getPostType() == Post.NO_PREVIEW_LINK_TYPE) {
+            if (data.has(JSONUtils.GALLERY_DATA_KEY)) {
+                JSONArray galleryIdsArray = data.getJSONObject(JSONUtils.GALLERY_DATA_KEY).getJSONArray(JSONUtils.ITEMS_KEY);
+                JSONObject galleryObject = data.getJSONObject(JSONUtils.MEDIA_METADATA_KEY);
+                ArrayList<Post.Gallery> gallery = new ArrayList<>();
+                for (int i = 0; i < galleryIdsArray.length(); i++) {
+                    String galleryId = galleryIdsArray.getJSONObject(i).getString(JSONUtils.MEDIA_ID_KEY);
+                    JSONObject singleGalleryObject = galleryObject.getJSONObject(galleryId);
+                    String mimeType = singleGalleryObject.getString(JSONUtils.M_KEY);
+                    String galleryItemUrl = singleGalleryObject.getJSONObject(JSONUtils.S_KEY).getString(JSONUtils.U_KEY);
+                    if ((previewUrl.equals("")) && mimeType.contains("jpg") || mimeType.contains("png")) {
+                        previewUrl = galleryItemUrl;
+                        post.setPreviewUrl(previewUrl);
+                        post.setPreviewWidth(singleGalleryObject.getJSONObject(JSONUtils.S_KEY).getInt(JSONUtils.X_KEY));
+                        post.setPreviewHeight(singleGalleryObject.getJSONObject(JSONUtils.S_KEY).getInt(JSONUtils.Y_KEY));
+                    }
+                    gallery.add(new Post.Gallery(mimeType, galleryItemUrl, subredditName + "-" + galleryId + "." + mimeType.substring(mimeType.lastIndexOf("/") + 1)));
+                }
+
+                if (!gallery.isEmpty()) {
+                    post.setPostType(Post.GALLERY_TYPE);
+                    post.setGallery(gallery);
+                }
+            }
         }
 
         return post;

app/src/main/java/ml/docilealligator/infinityforreddit/Post/Post.java

@@ -5,6 +5,8 @@ import android.os.Parcelable;
 
 import androidx.annotation.Nullable;
 
+import java.util.ArrayList;
+
 import ml.docilealligator.infinityforreddit.Utils.APIUtils;
 
 /**
@@ -19,6 +21,7 @@ public class Post implements Parcelable {
     public static final int VIDEO_TYPE = 3;
     public static final int GIF_TYPE = 4;
     public static final int NO_PREVIEW_LINK_TYPE = 5;
+    public static final int GALLERY_TYPE = 6;
     public static final Creator<Post> CREATOR = new Creator<Post>() {
         @Override
         public Post createFromParcel(Parcel in) {
@@ -69,6 +72,7 @@ public class Post implements Parcelable {
     private boolean saved;
     private boolean isCrosspost;
     private String crosspostParentId;
+    private ArrayList<Gallery> gallery = new ArrayList<>();
 
     public Post(String id, String fullName, String subredditName, String subredditNamePrefixed,
                 String author, String authorFlair, String authorFlairHTML,
@@ -217,6 +221,7 @@ public class Post implements Parcelable {
         saved = in.readByte() != 0;
         isCrosspost = in.readByte() != 0;
         crosspostParentId = in.readString();
+        in.readTypedList(gallery, Gallery.CREATOR);
     }
 
     public String getId() {
@@ -312,6 +317,10 @@ public class Post implements Parcelable {
         return previewUrl;
     }
 
+    public void setPreviewUrl(String previewUrl) {
+        this.previewUrl = previewUrl;
+    }
+
     public String getThumbnailPreviewUrl() {
         return thumbnailPreviewUrl;
     }
@@ -473,6 +482,14 @@ public class Post implements Parcelable {
         this.crosspostParentId = crosspostParentId;
     }
 
+    public ArrayList<Gallery> getGallery() {
+        return gallery;
+    }
+
+    public void setGallery(ArrayList<Gallery> gallery) {
+        this.gallery = gallery;
+    }
+
     @Override
     public void writeToParcel(Parcel parcel, int i) {
         parcel.writeString(id);
@@ -514,6 +531,7 @@ public class Post implements Parcelable {
         parcel.writeByte((byte) (saved ? 1 : 0));
         parcel.writeByte((byte) (isCrosspost ? 1 : 0));
         parcel.writeString(crosspostParentId);
+        parcel.writeTypedList(gallery);
     }
 
     @Override
@@ -528,4 +546,60 @@ public class Post implements Parcelable {
     public int hashCode() {
         return id.hashCode();
     }
+
+    public static class Gallery implements Parcelable{
+        public static final int TYPE_IMAGE = 0;
+        public static final int TYPE_GIF = 1;
+        public static final int TYPE_VIDEO = 2;
+
+        public String mimeType;
+        public String url;
+        public String fileName;
+        public int mediaType;
+
+        public Gallery(String mimeType, String url, String fileName) {
+            this.mimeType = mimeType;
+            this.url = url;
+            this.fileName = fileName;
+            if (mimeType.contains("gif")) {
+                mediaType = TYPE_GIF;
+            } else if (mimeType.contains("jpg") || mimeType.contains("png")) {
+                mediaType = TYPE_IMAGE;
+            } else {
+                mediaType = TYPE_VIDEO;
+            }
+        }
+
+        protected Gallery(Parcel in) {
+            mimeType = in.readString();
+            url = in.readString();
+            fileName = in.readString();
+            mediaType = in.readInt();
+        }
+
+        public static final Creator<Gallery> CREATOR = new Creator<Gallery>() {
+            @Override
+            public Gallery createFromParcel(Parcel in) {
+                return new Gallery(in);
+            }
+
+            @Override
+            public Gallery[] newArray(int size) {
+                return new Gallery[size];
+            }
+        };
+
+        @Override
+        public int describeContents() {
+            return 0;
+        }
+
+        @Override
+        public void writeToParcel(Parcel parcel, int i) {
+            parcel.writeString(mimeType);
+            parcel.writeString(url);
+            parcel.writeString(fileName);
+            parcel.writeInt(mediaType);
+        }
+    }
 }

app/src/main/java/ml/docilealligator/infinityforreddit/Utils/JSONUtils.java

@@ -113,4 +113,12 @@ public class JSONUtils {
     public static final String TYPE_KEY = "type";
     public static final String MP4_KEY = "mp4";
     public static final String THINGS_KEY = "things";
+    public static final String MEDIA_METADATA_KEY = "media_metadata";
+    public static final String GALLERY_DATA_KEY = "gallery_data";
+    public static final String ITEMS_KEY = "items";
+    public static final String M_KEY = "m";
+    public static final String MEDIA_ID_KEY = "media_id";
+    public static final String S_KEY = "s";
+    public static final String X_KEY = "x";
+    public static final String Y_KEY = "y";
 }

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

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8"?>
+<com.thefuntasty.hauler.HaulerView xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/hauler_view_view_reddit_gallery_activity"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    app:dragUpEnabled="true"
+    tools:context=".Activity.ViewRedditGalleryActivity">
+
+    <androidx.core.widget.NestedScrollView
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:fillViewport="true">
+
+        <androidx.viewpager.widget.ViewPager
+            android:id="@+id/view_pager_view_reddit_gallery_activity"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent" />
+
+    </androidx.core.widget.NestedScrollView>
+
+</com.thefuntasty.hauler.HaulerView>

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

@@ -0,0 +1,41 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:id="@+id/constraintLayout"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".Fragment.ViewImgurImageFragment">
+
+    <ProgressBar
+        android:id="@+id/progress_bar_view_reddit_gallery_image_or_gif_fragment"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_centerInParent="true" />
+
+    <com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView
+        android:id="@+id/image_view_view_reddit_gallery_image_or_gif_fragment"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        app:quickScaleEnabled="false" />
+
+    <LinearLayout
+        android:id="@+id/load_image_error_linear_layout_view_reddit_gallery_image_or_gif_fragment"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:visibility="gone">
+
+        <TextView
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:drawableTop="@drawable/ic_error_outline_white_24dp"
+            android:layout_gravity="center"
+            android:gravity="center"
+            android:textColor="@android:color/white"
+            android:text="@string/error_loading_image_tap_to_retry"
+            android:textSize="?attr/font_default"
+            android:fontFamily="?attr/font_family" />
+
+    </LinearLayout>
+
+</RelativeLayout>

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

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout 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=".Fragment.ViewRedditGalleryVideoFragment">
+
+    <com.google.android.exoplayer2.ui.PlayerView
+        android:id="@+id/player_view_view_reddit_gallery_video_fragment"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        app:controller_layout_id="@layout/exo_playback_control_view"/>
+
+</RelativeLayout>

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

@@ -0,0 +1,338 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="vertical"
+    android:background="?attr/cardViewBackgroundColor">
+
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:id="@+id/constraint_layout_item_post_detail_gallery"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:padding="16dp">
+
+        <ml.docilealligator.infinityforreddit.CustomView.AspectRatioGifImageView
+            android:id="@+id/icon_gif_image_view_item_post_detail_gallery"
+            android:layout_width="24dp"
+            android:layout_height="24dp"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent" />
+
+        <TextView
+            android:id="@+id/subreddit_text_view_item_post_detail_gallery"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="16dp"
+            android:layout_marginEnd="8dp"
+            android:textSize="?attr/font_default"
+            android:fontFamily="?attr/font_family"
+            android:maxLines="2"
+            android:ellipsize="end"
+            app:layout_constraintStart_toEndOf="@+id/icon_gif_image_view_item_post_detail_gallery"
+            app:layout_constraintEnd_toStartOf="@id/guideline"
+            app:layout_constraintTop_toTopOf="parent"
+            app:layout_constraintHorizontal_bias="0" />
+
+        <TextView
+            android:id="@+id/user_text_view_item_post_detail_gallery"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="16dp"
+            android:layout_marginEnd="8dp"
+            android:textSize="?attr/font_default"
+            android:fontFamily="?attr/font_family"
+            android:maxLines="2"
+            android:ellipsize="end"
+            app:layout_constraintBottom_toTopOf="@+id/author_flair_text_view_item_post_detail_gallery"
+            app:layout_constraintStart_toEndOf="@+id/icon_gif_image_view_item_post_detail_gallery"
+            app:layout_constraintEnd_toStartOf="@id/guideline"
+            app:layout_constraintTop_toBottomOf="@+id/subreddit_text_view_item_post_detail_gallery"
+            app:layout_constraintHorizontal_bias="0" />
+
+        <TextView
+            android:id="@+id/author_flair_text_view_item_post_detail_gallery"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="16dp"
+            android:layout_marginEnd="8dp"
+            android:textSize="?attr/font_12"
+            android:fontFamily="?attr/font_family"
+            android:maxLines="2"
+            android:ellipsize="end"
+            android:visibility="gone"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintStart_toEndOf="@+id/icon_gif_image_view_item_post_detail_gallery"
+            app:layout_constraintEnd_toStartOf="@id/guideline"
+            app:layout_constraintTop_toBottomOf="@+id/user_text_view_item_post_detail_gallery"
+            app:layout_constraintHorizontal_bias="0" />
+
+        <TextView
+            android:id="@+id/post_time_text_view_item_post_detail_gallery"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:gravity="end"
+            android:textSize="?attr/font_default"
+            android:fontFamily="?attr/font_family"
+            app:layout_constraintHorizontal_bias="1"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintStart_toEndOf="@id/guideline"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintTop_toTopOf="parent" />
+
+        <androidx.constraintlayout.widget.Guideline
+            android:id="@+id/guideline"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:orientation="vertical"
+            app:layout_constraintGuide_percent="0.6" />
+
+    </androidx.constraintlayout.widget.ConstraintLayout>
+
+    <TextView
+        android:id="@+id/title_text_view_item_post_detail_gallery"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:paddingStart="16dp"
+        android:paddingEnd="16dp"
+        android:textColor="?attr/primaryTextColor"
+        android:textSize="?attr/title_font_18"
+        android:fontFamily="?attr/title_font_family"
+        android:textIsSelectable="true"
+        android:enabled="true"
+        android:focusable="true"
+        android:longClickable="true" />
+
+    <com.nex3z.flowlayout.FlowLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:padding="16dp"
+        app:flChildSpacing="16dp"
+        app:flChildSpacingForLastRow="align"
+        app:flRowSpacing="8dp">
+
+        <com.libRG.CustomTextView
+            android:id="@+id/type_text_view_item_post_detail_gallery"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:padding="4dp"
+            android:text="@string/gallery"
+            android:textSize="?attr/font_12"
+            android:fontFamily="?attr/font_family"
+            app:lib_setRadius="3dp"
+            app:lib_setRoundedView="true"
+            app:lib_setShape="rectangle" />
+
+        <com.libRG.CustomTextView
+            android:id="@+id/spoiler_custom_text_view_item_post_detail_gallery"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="center"
+            android:text="@string/spoiler"
+            android:textSize="?attr/font_12"
+            android:fontFamily="?attr/font_family"
+            android:padding="4dp"
+            android:visibility="gone"
+            app:lib_setRadius="3dp"
+            app:lib_setRoundedView="true"
+            app:lib_setShape="rectangle" />
+
+        <com.libRG.CustomTextView
+            android:id="@+id/nsfw_text_view_item_post_detail_gallery"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:padding="4dp"
+            android:text="@string/nsfw"
+            android:textSize="?attr/font_12"
+            android:fontFamily="?attr/font_family"
+            android:visibility="gone"
+            app:lib_setRadius="3dp"
+            app:lib_setRoundedView="true"
+            app:lib_setShape="rectangle" />
+
+        <com.libRG.CustomTextView
+            android:id="@+id/flair_custom_text_view_item_post_detail_gallery"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="center"
+            android:padding="4dp"
+            android:textSize="?attr/font_12"
+            android:fontFamily="?attr/font_family"
+            android:visibility="gone"
+            app:lib_setRadius="3dp"
+            app:lib_setRoundedView="true"
+            app:lib_setShape="rectangle" />
+
+        <ImageView
+            android:id="@+id/archived_image_view_item_post_detail_gallery"
+            android:layout_width="20dp"
+            android:layout_height="20dp"
+            android:src="@drawable/ic_archive_outline"
+            android:visibility="gone" />
+
+        <ImageView
+            android:id="@+id/locked_image_view_item_post_detail_gallery"
+            android:layout_width="20dp"
+            android:layout_height="20dp"
+            android:src="@drawable/ic_outline_lock_24dp"
+            android:visibility="gone" />
+
+        <ImageView
+            android:id="@+id/crosspost_image_view_item_post_detail_gallery"
+            android:layout_width="20dp"
+            android:layout_height="20dp"
+            android:src="@drawable/crosspost"
+            android:visibility="gone" />
+
+        <TextView
+            android:id="@+id/awards_text_view_item_post_detail_gallery"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:textSize="?attr/font_12"
+            android:fontFamily="?attr/font_family"
+            android:visibility="gone" />
+
+    </com.nex3z.flowlayout.FlowLayout>
+
+    <RelativeLayout
+        android:id="@+id/image_view_wrapper_item_post_detail_gallery"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:visibility="gone">
+
+        <ml.docilealligator.infinityforreddit.CustomView.AspectRatioGifImageView
+            android:id="@+id/image_view_item_post_detail_gallery"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:adjustViewBounds="true"
+            android:scaleType="fitStart" />
+
+        <RelativeLayout
+            android:id="@+id/load_wrapper_item_post_detail_gallery"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_centerInParent="true"
+            android:visibility="gone">
+
+            <ProgressBar
+                android:id="@+id/progress_bar_item_post_detail_gallery"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_centerInParent="true" />
+
+            <TextView
+                android:id="@+id/load_image_error_text_view_item_post_detail_gallery"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:drawableTop="@drawable/ic_error_outline_black_24dp"
+                android:layout_centerInParent="true"
+                android:gravity="center"
+                android:text="@string/error_loading_image_tap_to_retry"
+                android:textSize="?attr/font_default"
+                android:fontFamily="?attr/font_family"
+                android:visibility="gone" />
+
+        </RelativeLayout>
+
+    </RelativeLayout>
+
+    <ImageView
+        android:id="@+id/image_view_no_preview_link_item_post_detail_gallery"
+        android:layout_width="match_parent"
+        android:layout_height="150dp"
+        android:scaleType="center"
+        android:src="@drawable/ic_link"
+        android:visibility="gone" />
+
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:id="@+id/bottom_constraint_layout_item_post_detail_gallery">
+
+        <ImageView
+            android:id="@+id/plus_button_item_post_detail_gallery"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:padding="12dp"
+            android:src="@drawable/ic_arrow_upward_grey_24dp"
+            android:tint="@android:color/tab_indicator_text"
+            android:background="?actionBarItemBackground"
+            android:clickable="true"
+            android:focusable="true"
+            app:layout_constraintTop_toTopOf="parent"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintStart_toStartOf="parent" />
+
+        <TextView
+            android:id="@+id/score_text_view_item_post_detail_gallery"
+            android:layout_width="64dp"
+            android:layout_height="wrap_content"
+            android:gravity="center"
+            android:textSize="?attr/font_12"
+            android:textStyle="bold"
+            android:fontFamily="?attr/font_family"
+            app:layout_constraintTop_toTopOf="parent"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintStart_toEndOf="@id/plus_button_item_post_detail_gallery" />
+
+        <ImageView
+            android:id="@+id/minus_button_item_post_detail_gallery"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:padding="12dp"
+            android:src="@drawable/ic_arrow_downward_grey_24dp"
+            android:tint="@android:color/tab_indicator_text"
+            android:background="?actionBarItemBackground"
+            android:clickable="true"
+            android:focusable="true"
+            app:layout_constraintTop_toTopOf="parent"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintStart_toEndOf="@id/score_text_view_item_post_detail_gallery" />
+
+        <TextView
+            android:id="@+id/comments_count_item_post_detail_gallery"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:padding="12dp"
+            android:gravity="center_vertical"
+            android:textSize="?attr/font_12"
+            android:textStyle="bold"
+            android:fontFamily="?attr/font_family"
+            android:drawableStart="@drawable/ic_comment_grey_24dp"
+            android:drawablePadding="12dp"
+            app:layout_constraintTop_toTopOf="parent"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintStart_toEndOf="@id/minus_button_item_post_detail_gallery" />
+
+        <ImageView
+            android:id="@+id/save_button_item_post_detail_gallery"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:padding="12dp"
+            android:tint="@android:color/tab_indicator_text"
+            android:background="?actionBarItemBackground"
+            android:clickable="true"
+            android:focusable="true"
+            app:layout_constraintHorizontal_bias="1"
+            app:layout_constraintTop_toTopOf="parent"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintStart_toEndOf="@id/comments_count_item_post_detail_gallery"
+            app:layout_constraintEnd_toStartOf="@id/share_button_item_post_detail_gallery" />
+
+        <ImageView
+            android:id="@+id/share_button_item_post_detail_gallery"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:padding="12dp"
+            android:src="@drawable/ic_share_grey_24dp"
+            android:background="?actionBarItemBackground"
+            android:clickable="true"
+            android:focusable="true"
+            app:layout_constraintTop_toTopOf="parent"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toEndOf="parent" />
+
+    </androidx.constraintlayout.widget.ConstraintLayout>
+
+</LinearLayout>

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

@@ -219,8 +219,7 @@
         android:layout_width="match_parent"
         android:layout_height="150dp"
         android:scaleType="center"
-        android:src="@drawable/ic_link"
-        android:tint="@android:color/tab_indicator_text" />
+        android:src="@drawable/ic_link" />
 
     <androidx.constraintlayout.widget.ConstraintLayout
         android:layout_width="match_parent"

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

@@ -0,0 +1,337 @@
+<?xml version="1.0" encoding="utf-8"?>
+<com.google.android.material.card.MaterialCardView xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:layout_marginTop="8dp"
+    android:layout_marginBottom="8dp"
+    android:id="@+id/card_view_item_post_gallery_type"
+    app:cardBackgroundColor="?attr/cardViewBackgroundColor"
+    app:cardElevation="2dp"
+    app:cardCornerRadius="16dp">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical">
+
+        <androidx.constraintlayout.widget.ConstraintLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:padding="16dp">
+
+            <ml.docilealligator.infinityforreddit.CustomView.AspectRatioGifImageView
+                android:id="@+id/icon_gif_image_view_item_post_gallery_type"
+                android:layout_width="24dp"
+                android:layout_height="24dp"
+                android:layout_gravity="center"
+                app:layout_constraintBottom_toBottomOf="parent"
+                app:layout_constraintStart_toStartOf="parent"
+                app:layout_constraintTop_toTopOf="parent"/>
+
+            <TextView
+                android:id="@+id/subreddit_name_text_view_item_post_gallery_type"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_gravity="center"
+                android:layout_marginStart="16dp"
+                android:layout_marginEnd="8dp"
+                android:textSize="?attr/font_default"
+                android:fontFamily="?attr/font_family"
+                app:layout_constraintBottom_toTopOf="@id/user_text_view_item_post_gallery_type"
+                app:layout_constraintStart_toEndOf="@id/icon_gif_image_view_item_post_gallery_type"
+                app:layout_constraintEnd_toStartOf="@id/stickied_post_image_view_item_post_gallery_type"
+                app:layout_constraintTop_toTopOf="parent"/>
+
+            <TextView
+                android:id="@+id/user_text_view_item_post_gallery_type"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_marginStart="16dp"
+                android:layout_marginEnd="8dp"
+                android:textSize="?attr/font_default"
+                android:fontFamily="?attr/font_family"
+                android:maxLines="2"
+                android:ellipsize="end"
+                app:layout_constraintBottom_toBottomOf="parent"
+                app:layout_constraintStart_toEndOf="@+id/icon_gif_image_view_item_post_gallery_type"
+                app:layout_constraintEnd_toStartOf="@id/stickied_post_image_view_item_post_gallery_type"
+                app:layout_constraintTop_toBottomOf="@+id/subreddit_name_text_view_item_post_gallery_type"
+                app:layout_constraintHorizontal_bias="0" />
+
+            <ImageView
+                android:id="@+id/stickied_post_image_view_item_post_gallery_type"
+                android:layout_width="24dp"
+                android:layout_height="24dp"
+                android:layout_marginEnd="8dp"
+                android:visibility="gone"
+                app:layout_constraintBottom_toBottomOf="parent"
+                app:layout_constraintStart_toEndOf="@id/subreddit_name_text_view_item_post_gallery_type"
+                app:layout_constraintEnd_toStartOf="@+id/guideline2"
+                app:layout_constraintTop_toTopOf="parent"/>
+
+            <TextView
+                android:id="@+id/post_time_text_view_item_post_gallery_type"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:gravity="end"
+                android:textSize="?attr/font_default"
+                android:fontFamily="?attr/font_family"
+                app:layout_constraintBottom_toBottomOf="parent"
+                app:layout_constraintEnd_toEndOf="parent"
+                app:layout_constraintStart_toEndOf="@id/guideline2"
+                app:layout_constraintTop_toTopOf="parent" />
+
+            <androidx.constraintlayout.widget.Guideline
+                android:id="@+id/guideline2"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:orientation="vertical"
+                app:layout_constraintGuide_percent="0.6" />
+
+        </androidx.constraintlayout.widget.ConstraintLayout>
+
+        <TextView
+            android:id="@+id/title_text_view_item_post_gallery_type"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:paddingStart="16dp"
+            android:paddingEnd="16dp"
+            android:textSize="?attr/title_font_18"
+            android:fontFamily="?attr/title_font_family" />
+
+        <com.nex3z.flowlayout.FlowLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:padding="16dp"
+            app:flChildSpacing="16dp"
+            app:flChildSpacingForLastRow="align"
+            app:flRowSpacing="8dp">
+
+            <com.libRG.CustomTextView
+                android:id="@+id/type_text_view_item_post_gallery_type"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:padding="4dp"
+                android:text="@string/gallery"
+                android:textSize="?attr/font_12"
+                android:fontFamily="?attr/font_family"
+                app:lib_setRadius="3dp"
+                app:lib_setRoundedView="true"
+                app:lib_setShape="rectangle" />
+
+            <com.libRG.CustomTextView
+                android:id="@+id/spoiler_custom_text_view_item_post_gallery_type"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="center"
+                android:text="@string/spoiler"
+                android:textSize="?attr/font_12"
+                android:fontFamily="?attr/font_family"
+                android:padding="4dp"
+                android:visibility="gone"
+                app:lib_setRadius="3dp"
+                app:lib_setRoundedView="true"
+                app:lib_setShape="rectangle" />
+
+            <com.libRG.CustomTextView
+                android:id="@+id/nsfw_text_view_item_post_gallery_type"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:padding="4dp"
+                android:text="@string/nsfw"
+                android:textSize="?attr/font_12"
+                android:fontFamily="?attr/font_family"
+                android:visibility="gone"
+                app:lib_setRadius="3dp"
+                app:lib_setRoundedView="true"
+                app:lib_setShape="rectangle" />
+
+            <com.libRG.CustomTextView
+                android:id="@+id/flair_custom_text_view_item_post_gallery_type"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="center"
+                android:textSize="?attr/font_12"
+                android:fontFamily="?attr/font_family"
+                android:padding="4dp"
+                android:visibility="gone"
+                app:lib_setRadius="3dp"
+                app:lib_setRoundedView="true"
+                app:lib_setShape="rectangle" />
+
+            <com.libRG.CustomTextView
+                android:id="@+id/awards_text_view_item_post_gallery_type"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:padding="4dp"
+                android:textSize="?attr/font_12"
+                android:fontFamily="?attr/font_family"
+                android:visibility="gone"
+                app:lib_setRadius="3dp"
+                app:lib_setRoundedView="true"
+                app:lib_setShape="rectangle" />
+
+            <ImageView
+                android:id="@+id/archived_image_view_item_post_gallery_type"
+                android:layout_width="24dp"
+                android:layout_height="24dp"
+                android:src="@drawable/ic_archive_outline"
+                android:visibility="gone" />
+
+            <ImageView
+                android:id="@+id/locked_image_view_item_post_gallery_type"
+                android:layout_width="24dp"
+                android:layout_height="24dp"
+                android:src="@drawable/ic_outline_lock_24dp"
+                android:visibility="gone" />
+
+            <ImageView
+                android:id="@+id/crosspost_image_view_item_post_gallery_type"
+                android:layout_width="24dp"
+                android:layout_height="24dp"
+                android:src="@drawable/crosspost"
+                android:visibility="gone" />
+
+        </com.nex3z.flowlayout.FlowLayout>
+
+        <RelativeLayout
+            android:id="@+id/image_wrapper_relative_layout_item_post_gallery"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:visibility="gone">
+
+            <ml.docilealligator.infinityforreddit.CustomView.AspectRatioGifImageView
+                android:id="@+id/image_view_item_post_gallery_type"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:adjustViewBounds="true"
+                android:scaleType="fitStart" />
+
+            <ProgressBar
+                android:id="@+id/progress_bar_item_post_gallery_type"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_centerInParent="true" />
+
+            <RelativeLayout
+                android:id="@+id/load_image_error_relative_layout_item_post_gallery_type"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:layout_centerInParent="true"
+                android:visibility="gone">
+
+                <TextView
+                    android:id="@+id/load_image_error_text_view_item_post_gallery_type"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:drawableTop="@drawable/ic_error_outline_black_24dp"
+                    android:layout_gravity="center"
+                    android:gravity="center"
+                    android:text="@string/error_loading_image_tap_to_retry"
+                    android:textSize="?attr/font_default"
+                    android:fontFamily="?attr/font_family" />
+
+            </RelativeLayout>
+
+        </RelativeLayout>
+
+        <ImageView
+            android:id="@+id/image_view_no_preview_gallery_item_post_gallery_type"
+            android:layout_width="match_parent"
+            android:layout_height="150dp"
+            android:scaleType="center"
+            android:src="@drawable/ic_link"
+            android:tint="@android:color/tab_indicator_text"
+            android:visibility="gone" />
+
+        <androidx.constraintlayout.widget.ConstraintLayout
+            android:id="@+id/bottom_constraint_layout_item_post_gallery_type"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content">
+
+            <ImageView
+                android:id="@+id/plus_button_item_post_gallery_type"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:padding="12dp"
+                android:src="@drawable/ic_arrow_upward_grey_24dp"
+                android:background="?actionBarItemBackground"
+                android:clickable="true"
+                android:focusable="true"
+                app:layout_constraintTop_toTopOf="parent"
+                app:layout_constraintBottom_toBottomOf="parent"
+                app:layout_constraintStart_toStartOf="parent" />
+
+            <TextView
+                android:id="@+id/score_text_view_item_post_gallery_type"
+                android:layout_width="64dp"
+                android:layout_height="wrap_content"
+                android:gravity="center"
+                android:textSize="?attr/font_12"
+                android:textStyle="bold"
+                android:fontFamily="?attr/font_family"
+                app:layout_constraintTop_toTopOf="parent"
+                app:layout_constraintBottom_toBottomOf="parent"
+                app:layout_constraintStart_toEndOf="@id/plus_button_item_post_gallery_type" />
+
+            <ImageView
+                android:id="@+id/minus_button_item_post_gallery_type"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:padding="12dp"
+                android:src="@drawable/ic_arrow_downward_grey_24dp"
+                android:background="?actionBarItemBackground"
+                android:clickable="true"
+                android:focusable="true"
+                app:layout_constraintTop_toTopOf="parent"
+                app:layout_constraintBottom_toBottomOf="parent"
+                app:layout_constraintStart_toEndOf="@id/score_text_view_item_post_gallery_type" />
+
+            <TextView
+                android:id="@+id/comments_count_item_post_gallery_type"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:padding="12dp"
+                android:gravity="center_vertical"
+                android:textSize="?attr/font_12"
+                android:textStyle="bold"
+                android:fontFamily="?attr/font_family"
+                android:drawableStart="@drawable/ic_comment_grey_24dp"
+                android:drawablePadding="12dp"
+                app:layout_constraintTop_toTopOf="parent"
+                app:layout_constraintBottom_toBottomOf="parent"
+                app:layout_constraintStart_toEndOf="@id/minus_button_item_post_gallery_type" />
+
+            <ImageView
+                android:id="@+id/save_button_item_post_gallery_type"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:padding="12dp"
+                android:background="?actionBarItemBackground"
+                android:clickable="true"
+                android:focusable="true"
+                app:layout_constraintHorizontal_bias="1"
+                app:layout_constraintTop_toTopOf="parent"
+                app:layout_constraintBottom_toBottomOf="parent"
+                app:layout_constraintStart_toEndOf="@id/comments_count_item_post_gallery_type"
+                app:layout_constraintEnd_toStartOf="@id/share_button_item_post_gallery_type" />
+
+            <ImageView
+                android:id="@+id/share_button_item_post_gallery_type"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:padding="12dp"
+                android:src="@drawable/ic_share_grey_24dp"
+                android:background="?actionBarItemBackground"
+                android:clickable="true"
+                android:focusable="true"
+                app:layout_constraintTop_toTopOf="parent"
+                app:layout_constraintBottom_toBottomOf="parent"
+                app:layout_constraintEnd_toEndOf="parent" />
+
+        </androidx.constraintlayout.widget.ConstraintLayout>
+
+    </LinearLayout>
+
+</com.google.android.material.card.MaterialCardView>

app/src/main/res/menu/view_imgur_image_fragment.xml

@@ -2,21 +2,21 @@
 <menu xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto">
     <item
-        android:id="@+id/action_download_view_imgur_image_fragments"
+        android:id="@+id/action_download_view_imgur_image_fragment"
         android:orderInCategory="1"
         android:title="@string/action_download"
         android:icon="@drawable/ic_file_download_toolbar_white_24dp"
         app:showAsAction="ifRoom" />
 
     <item
-        android:id="@+id/action_share_view_imgur_image_fragments"
+        android:id="@+id/action_share_view_imgur_image_fragment"
         android:orderInCategory="2"
         android:title="@string/action_share"
         android:icon="@drawable/ic_share_toolbar_white_24dp"
         app:showAsAction="ifRoom" />
 
     <item
-        android:id="@+id/action_set_wallpaper_view_imgur_image_fragments"
+        android:id="@+id/action_set_wallpaper_view_imgur_image_fragment"
         android:orderInCategory="3"
         android:title="@string/action_set_wallpaper"
         app:showAsAction="never" />

app/src/main/res/menu/view_imgur_video_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_download_view_imgur_image_fragments"
+        android:id="@+id/action_download_view_imgur_video_fragment"
         android:orderInCategory="1"
         android:title="@string/action_download"
         android:icon="@drawable/ic_file_download_toolbar_white_24dp"

app/src/main/res/menu/view_reddit_gallery_image_or_gif_fragment.xml

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+    <item
+        android:id="@+id/action_download_view_reddit_gallery_image_or_gif_fragment"
+        android:orderInCategory="1"
+        android:title="@string/action_download"
+        android:icon="@drawable/ic_file_download_toolbar_white_24dp"
+        app:showAsAction="ifRoom" />
+
+    <item
+        android:id="@+id/action_share_view_reddit_gallery_image_or_gif_fragment"
+        android:orderInCategory="2"
+        android:title="@string/action_share"
+        android:icon="@drawable/ic_share_toolbar_white_24dp"
+        app:showAsAction="ifRoom" />
+
+    <item
+        android:id="@+id/action_set_wallpaper_view_reddit_gallery_image_or_gif_fragment"
+        android:orderInCategory="3"
+        android:title="@string/action_set_wallpaper"
+        app:showAsAction="never" />
+</menu>

app/src/main/res/menu/view_reddit_gallery_video_fragment.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+    <item
+        android:id="@+id/action_download_view_reddit_gallery_video_fragment"
+        android:orderInCategory="1"
+        android:title="@string/action_download"
+        android:icon="@drawable/ic_file_download_toolbar_white_24dp"
+        app:showAsAction="ifRoom" />
+</menu>

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

@@ -29,6 +29,9 @@
     <string name="view_imgur_media_activity_image_label">Image %1$d/%2$d</string>
     <string name="view_imgur_media_activity_video_label">Video %1$d/%2$d</string>
     <string name="send_private_message_activity_label">Send PM</string>
+    <string name="view_reddit_gallery_activity_image_label">Image %1$d/%2$d</string>
+    <string name="view_reddit_gallery_activity_gif_label">Gif %1$d/%2$d</string>
+    <string name="view_reddit_gallery_activity_video_label">Video %1$d/%2$d</string>
 
     <string name="navigation_drawer_open">Open navigation drawer</string>
     <string name="navigation_drawer_close">Close navigation drawer</string>
@@ -263,6 +266,7 @@
     <string name="image">IMAGE</string>
     <string name="video">VIDEO</string>
     <string name="gif">GIF</string>
+    <string name="gallery">GALLERY</string>
     <string name="best">Best</string>
     <string name="search">Search</string>