Start implementing showing subscribed subreddits in the nav drawer. Use a RecyclerView to display all the items in the nav drawer.

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

@@ -18,16 +18,13 @@ import android.view.Window;
 import android.view.WindowManager;
 import android.widget.ImageView;
 import android.widget.LinearLayout;
-import android.widget.TextView;
 import android.widget.Toast;
 
 import androidx.annotation.NonNull;
 import androidx.appcompat.app.ActionBarDrawerToggle;
-import androidx.appcompat.app.AppCompatDelegate;
 import androidx.appcompat.widget.Toolbar;
 import androidx.coordinatorlayout.widget.CoordinatorLayout;
 import androidx.core.view.GravityCompat;
-import androidx.core.widget.NestedScrollView;
 import androidx.drawerlayout.widget.DrawerLayout;
 import androidx.fragment.app.Fragment;
 import androidx.fragment.app.FragmentManager;
@@ -44,7 +41,6 @@ import androidx.work.WorkManager;
 
 import com.bumptech.glide.Glide;
 import com.bumptech.glide.RequestManager;
-import com.bumptech.glide.request.RequestOptions;
 import com.google.android.material.appbar.AppBarLayout;
 import com.google.android.material.appbar.CollapsingToolbarLayout;
 import com.google.android.material.bottomappbar.BottomAppBar;
@@ -63,15 +59,12 @@ import javax.inject.Named;
 
 import butterknife.BindView;
 import butterknife.ButterKnife;
-import jp.wasabeef.glide.transformations.RoundedCornersTransformation;
-import ml.docilealligator.infinityforreddit.Account.Account;
 import ml.docilealligator.infinityforreddit.Account.AccountViewModel;
-import ml.docilealligator.infinityforreddit.Adapter.AccountRecyclerViewAdapter;
+import ml.docilealligator.infinityforreddit.Adapter.NavigationDrawerRecyclerViewAdapter;
 import ml.docilealligator.infinityforreddit.AppBarStateChangeListener;
 import ml.docilealligator.infinityforreddit.AsyncTask.GetCurrentAccountAsyncTask;
 import ml.docilealligator.infinityforreddit.AsyncTask.InsertSubscribedThingsAsyncTask;
 import ml.docilealligator.infinityforreddit.AsyncTask.SwitchAccountAsyncTask;
-import ml.docilealligator.infinityforreddit.AsyncTask.SwitchToAnonymousAccountAsyncTask;
 import ml.docilealligator.infinityforreddit.Event.ChangeConfirmToExitEvent;
 import ml.docilealligator.infinityforreddit.Event.ChangeLockBottomAppBarEvent;
 import ml.docilealligator.infinityforreddit.Event.ChangeNSFWEvent;
@@ -95,14 +88,11 @@ import ml.docilealligator.infinityforreddit.SortType;
 import ml.docilealligator.infinityforreddit.SortTypeSelectionCallback;
 import ml.docilealligator.infinityforreddit.SubredditDatabase.SubredditData;
 import ml.docilealligator.infinityforreddit.SubscribedSubredditDatabase.SubscribedSubredditData;
+import ml.docilealligator.infinityforreddit.SubscribedSubredditDatabase.SubscribedSubredditViewModel;
 import ml.docilealligator.infinityforreddit.SubscribedUserDatabase.SubscribedUserData;
 import ml.docilealligator.infinityforreddit.Utils.SharedPreferencesUtils;
-import pl.droidsonroids.gif.GifImageView;
 import retrofit2.Retrofit;
 
-import static androidx.appcompat.app.AppCompatDelegate.MODE_NIGHT_NO;
-import static androidx.appcompat.app.AppCompatDelegate.MODE_NIGHT_YES;
-
 public class MainActivity extends BaseActivity implements SortTypeSelectionCallback,
         PostTypeBottomSheetFragment.PostTypeSelectionCallback, PostLayoutBottomSheetFragment.PostLayoutSelectionCallback {
 
@@ -137,7 +127,9 @@ public class MainActivity extends BaseActivity implements SortTypeSelectionCallb
     CollapsingToolbarLayout collapsingToolbarLayout;
     @BindView(R.id.toolbar)
     Toolbar toolbar;
-    @BindView(R.id.nested_scroll_view_main_activity)
+    @BindView(R.id.nav_drawer_recycler_view_main_activity)
+    RecyclerView navDrawerRecyclerView;
+    /*@BindView(R.id.nested_scroll_view_main_activity)
     NestedScrollView nestedScrollView;
     @BindView(R.id.all_drawer_items_linear_layout_main_activity)
     LinearLayout allDrawerItemsLinearLayout;
@@ -170,7 +162,7 @@ public class MainActivity extends BaseActivity implements SortTypeSelectionCallb
     @BindView(R.id.settings_text_view_main_activity)
     TextView settingsTextView;
     @BindView(R.id.account_recycler_view_main_activity)
-    RecyclerView accountRecyclerView;
+    RecyclerView accountRecyclerView;*/
     @BindView(R.id.tab_layout_main_activity)
     TabLayout tabLayout;
     @BindView(R.id.bottom_navigation_main_activity)
@@ -187,6 +179,7 @@ public class MainActivity extends BaseActivity implements SortTypeSelectionCallb
     ImageView profileBottomAppBar;
     @BindView(R.id.fab_main_activity)
     FloatingActionButton fab;
+    SubscribedSubredditViewModel subscribedSubredditViewModel;
     AccountViewModel accountViewModel;
     @Inject
     @Named("oauth")
@@ -196,11 +189,11 @@ public class MainActivity extends BaseActivity implements SortTypeSelectionCallb
     @Inject
     SharedPreferences mSharedPreferences;
     private SectionsPagerAdapter sectionsPagerAdapter;
-    private TextView mAccountNameTextView;
+    /*private TextView mAccountNameTextView;
     private TextView mKarmaTextView;
     private GifImageView mProfileImageView;
     private ImageView mBannerImageView;
-    private ImageView mDropIconImageView;
+    private ImageView mDropIconImageView;*/
     private RequestManager glide;
     private AppBarLayout.LayoutParams params;
     private PostTypeBottomSheetFragment postTypeBottomSheetFragment;
@@ -208,6 +201,7 @@ public class MainActivity extends BaseActivity implements SortTypeSelectionCallb
     private SortTypeBottomSheetFragment popularAndAllSortTypeBottomSheetFragment;
     private SortTimeBottomSheetFragment sortTimeBottomSheetFragment;
     private PostLayoutBottomSheetFragment postLayoutBottomSheetFragment;
+    private NavigationDrawerRecyclerViewAdapter adapter;
     private boolean mNullAccessToken = false;
     private String mAccessToken;
     private String mAccountName;
@@ -292,7 +286,8 @@ public class MainActivity extends BaseActivity implements SortTypeSelectionCallb
                         int navBarHeight = resources.getDimensionPixelSize(navBarResourceId);
                         linearLayoutBottomAppBar.setPadding(0,
                                 (int) (6 * resources.getDisplayMetrics().density), 0, navBarHeight);
-                        nestedScrollView.setPadding(0, 0, 0, navBarHeight);
+                        //nestedScrollView.setPadding(0, 0, 0, navBarHeight);
+                        navDrawerRecyclerView.setPadding(0, 0, 0, navBarHeight);
                     }
                 }
             }
@@ -502,6 +497,10 @@ public class MainActivity extends BaseActivity implements SortTypeSelectionCallb
             fab.setVisibility(View.VISIBLE);
         }
 
+        adapter = new NavigationDrawerRecyclerViewAdapter(this, mAccountName, mProfileImageUrl, mBannerImageUrl, mKarma);
+        navDrawerRecyclerView.setLayoutManager(new LinearLayoutManager(this));
+        navDrawerRecyclerView.setAdapter(adapter);
+
         sectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());
         viewPager.setAdapter(sectionsPagerAdapter);
         viewPager.setOffscreenPageLimit(3);
@@ -538,7 +537,7 @@ public class MainActivity extends BaseActivity implements SortTypeSelectionCallb
 
         glide = Glide.with(this);
 
-        AccountRecyclerViewAdapter adapter = new AccountRecyclerViewAdapter(this, glide, mAccountName,
+        /*AccountRecyclerViewAdapter adapter = new AccountRecyclerViewAdapter(this, glide, mAccountName,
                 new AccountRecyclerViewAdapter.ItemSelectedListener() {
                     @Override
                     public void accountSelected(Account account) {
@@ -574,11 +573,17 @@ public class MainActivity extends BaseActivity implements SortTypeSelectionCallb
                                     finish();
                                 }).execute();
                     }
-                });
+                });*/
 
-        accountRecyclerView.setLayoutManager(new LinearLayoutManager(this));
+        /*accountRecyclerView.setLayoutManager(new LinearLayoutManager(this));
         accountRecyclerView.setNestedScrollingEnabled(false);
-        accountRecyclerView.setAdapter(adapter);
+        accountRecyclerView.setAdapter(adapter);*/
+
+        subscribedSubredditViewModel = new ViewModelProvider(this,
+                new SubscribedSubredditViewModel.Factory(getApplication(), mRedditDataRoomDatabase, mAccountName))
+                .get(SubscribedSubredditViewModel.class);
+        subscribedSubredditViewModel.getAllSubscribedSubreddits().observe(this,
+                subscribedSubredditData -> adapter.setSubscribedSubreddits(subscribedSubredditData));
 
         accountViewModel = new ViewModelProvider(this,
                 new AccountViewModel.Factory(getApplication(), mRedditDataRoomDatabase, mAccountName)).get(AccountViewModel.class);
@@ -593,7 +598,7 @@ public class MainActivity extends BaseActivity implements SortTypeSelectionCallb
             }
         }
 
-        View header = findViewById(R.id.nav_header_main_activity);
+        /*View header = findViewById(R.id.nav_header_main_activity);
         mAccountNameTextView = header.findViewById(R.id.name_text_view_nav_header_main);
         mKarmaTextView = header.findViewById(R.id.karma_text_view_nav_header_main);
         mProfileImageView = header.findViewById(R.id.profile_image_view_nav_header_main);
@@ -622,13 +627,13 @@ public class MainActivity extends BaseActivity implements SortTypeSelectionCallb
                 accountRecyclerView.setVisibility(View.VISIBLE);
                 allDrawerItemsLinearLayout.setVisibility(View.GONE);
             }
-        });
+        });*/
 
         loadUserData();
 
         if (mAccessToken != null) {
-            mKarmaTextView.setText(getString(R.string.karma_info, mKarma));
+            /*mKarmaTextView.setText(getString(R.string.karma_info, mKarma));
-            mAccountNameTextView.setText(mAccountName);
+            mAccountNameTextView.setText(mAccountName);*/
             if (mMessageFullname != null) {
                 ReadMessage.readMessage(mOauthRetrofit, mAccessToken, mMessageFullname, new ReadMessage.ReadMessageListener() {
                     @Override
@@ -643,7 +648,7 @@ public class MainActivity extends BaseActivity implements SortTypeSelectionCallb
                 });
             }
         } else {
-            mKarmaTextView.setText(R.string.press_here_to_login);
+            /*mKarmaTextView.setText(R.string.press_here_to_login);
             mAccountNameTextView.setText(R.string.anonymous_account);
             accountLabelTextView.setVisibility(View.GONE);
             profileTextView.setVisibility(View.GONE);
@@ -656,10 +661,10 @@ public class MainActivity extends BaseActivity implements SortTypeSelectionCallb
             hiddenTextView.setVisibility(View.GONE);
             savedTextView.setVisibility(View.GONE);
             gildedTextView.setVisibility(View.GONE);
-            divider.setVisibility(View.GONE);
+            divider.setVisibility(View.GONE);*/
         }
 
-        if (mProfileImageUrl != null && !mProfileImageUrl.equals("")) {
+        /*if (mProfileImageUrl != null && !mProfileImageUrl.equals("")) {
             glide.load(mProfileImageUrl)
                     .apply(RequestOptions.bitmapTransform(new RoundedCornersTransformation(144, 0)))
                     .error(glide.load(R.drawable.subreddit_default_icon)
@@ -673,9 +678,9 @@ public class MainActivity extends BaseActivity implements SortTypeSelectionCallb
 
         if (mBannerImageUrl != null && !mBannerImageUrl.equals("")) {
             glide.load(mBannerImageUrl).into(mBannerImageView);
-        }
+        }*/
 
-        profileTextView.setOnClickListener(view -> {
+        /*profileTextView.setOnClickListener(view -> {
             Intent intent = new Intent(this, ViewUserDetailActivity.class);
             intent.putExtra(ViewUserDetailActivity.EXTRA_USER_NAME_KEY, mAccountName);
             startActivity(intent);
@@ -766,7 +771,7 @@ public class MainActivity extends BaseActivity implements SortTypeSelectionCallb
             drawer.closeDrawers();
             Intent intent = new Intent(MainActivity.this, SettingsActivity.class);
             startActivity(intent);
-        });
+        });*/
     }
 
     private void loadSubscriptions() {
@@ -804,7 +809,7 @@ public class MainActivity extends BaseActivity implements SortTypeSelectionCallb
                     ParseAndSaveAccountInfo.parseAndSaveAccountInfo(response, mRedditDataRoomDatabase, new ParseAndSaveAccountInfo.ParseAndSaveAccountInfoListener() {
                         @Override
                         public void onParseMyInfoSuccess(String name, String profileImageUrl, String bannerImageUrl, int karma) {
-                            mAccountNameTextView.setText(name);
+                            /*mAccountNameTextView.setText(name);
                             if (profileImageUrl != null && !profileImageUrl.equals("")) {
                                 glide.load(profileImageUrl)
                                         .apply(RequestOptions.bitmapTransform(new RoundedCornersTransformation(128, 0)))
@@ -818,14 +823,14 @@ public class MainActivity extends BaseActivity implements SortTypeSelectionCallb
                             }
                             if (bannerImageUrl != null && !bannerImageUrl.equals("")) {
                                 glide.load(bannerImageUrl).into(mBannerImageView);
-                            }
+                            }*/
 
                             mAccountName = name;
                             mProfileImageUrl = profileImageUrl;
                             mBannerImageUrl = bannerImageUrl;
                             mKarma = karma;
 
-                            mKarmaTextView.setText(getString(R.string.karma_info, karma));
+                            //mKarmaTextView.setText(getString(R.string.karma_info, karma));
 
                             mFetchUserInfoSuccess = true;
                         }

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

@@ -0,0 +1,302 @@
+package ml.docilealligator.infinityforreddit.Adapter;
+
+import android.content.Context;
+import android.content.res.Configuration;
+import android.content.res.Resources;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.bumptech.glide.Glide;
+import com.bumptech.glide.RequestManager;
+import com.bumptech.glide.request.RequestOptions;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import butterknife.BindView;
+import butterknife.ButterKnife;
+import jp.wasabeef.glide.transformations.RoundedCornersTransformation;
+import ml.docilealligator.infinityforreddit.Account.Account;
+import ml.docilealligator.infinityforreddit.R;
+import ml.docilealligator.infinityforreddit.SubscribedSubredditDatabase.SubscribedSubredditData;
+import pl.droidsonroids.gif.GifImageView;
+
+public class NavigationDrawerRecyclerViewAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
+    private static final int VIEW_TYPE_NAV_HEADER = 0;
+    private static final int VIEW_TYPE_MENU_GROUP_TITLE = 1;
+    private static final int VIEW_TYPE_MENU_ITEM = 2;
+    private static final int VIEW_TYPE_DIVIDER = 3;
+    private static final int VIEW_TYPE_SUBSCRIBED_SUBREDDIT = 4;
+    private static final int CURRENT_MENU_ITEMS = 15;
+
+    private Context context;
+    private Resources resources;
+    private RequestManager glide;
+    private String accountName;
+    private String userIconUrl;
+    private String userBannerUrl;
+    private int karma;
+    private boolean isLoggedIn;
+    private boolean isInMainPage = true;
+    private ArrayList<SubscribedSubredditData> subscribedSubreddits;
+
+    public NavigationDrawerRecyclerViewAdapter(Context context, String accountName, String userIconUrl,
+                                               String userBannerUrl, int karma) {
+        this.context = context;
+        resources = context.getResources();
+        glide = Glide.with(context);
+        this.accountName = accountName;
+        this.userIconUrl = userIconUrl;
+        this.userBannerUrl = userBannerUrl;
+        this.karma = karma;
+        isLoggedIn = accountName != null;
+    }
+
+    @Override
+    public int getItemViewType(int position) {
+        if (isLoggedIn) {
+            if (position >= 15) {
+                return VIEW_TYPE_SUBSCRIBED_SUBREDDIT;
+            } else if (position == 0) {
+                return VIEW_TYPE_NAV_HEADER;
+            } else if (position == 1 || position == 6) {
+                return VIEW_TYPE_MENU_GROUP_TITLE;
+            } else if (position == 12) {
+                return VIEW_TYPE_DIVIDER;
+            } else {
+                return VIEW_TYPE_MENU_ITEM;
+            }
+        } else {
+            if (position == 0) {
+                return VIEW_TYPE_NAV_HEADER;
+            } else {
+                return VIEW_TYPE_MENU_ITEM;
+            }
+        }
+    }
+
+    @NonNull
+    @Override
+    public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
+        switch (viewType) {
+            case VIEW_TYPE_NAV_HEADER:
+                return new NavHeaderViewHolder(LayoutInflater.from(parent.getContext())
+                        .inflate(R.layout.nav_header_main, parent, false));
+            case VIEW_TYPE_MENU_GROUP_TITLE:
+                return new MenuGroupTitleViewHolder(LayoutInflater.from(parent.getContext())
+                        .inflate(R.layout.item_nav_drawer_menu_group_title, parent, false));
+            case VIEW_TYPE_MENU_ITEM:
+                return new MenuItemViewHolder(LayoutInflater.from(parent.getContext())
+                        .inflate(R.layout.item_nav_drawer_menu_item, parent, false));
+            case VIEW_TYPE_DIVIDER:
+                return new DividerViewHolder(LayoutInflater.from(parent.getContext())
+                        .inflate(R.layout.item_nav_drawer_divider, parent, false));
+            default:
+                return new SubscribedThingViewHolder(LayoutInflater.from(parent.getContext())
+                        .inflate(R.layout.item_nav_drawer_subscribed_thing, parent, false));
+        }
+    }
+
+    @Override
+    public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, int position) {
+        if (holder instanceof NavHeaderViewHolder) {
+            if (isLoggedIn) {
+                ((NavHeaderViewHolder) holder).karmaTextView.setText(context.getString(R.string.karma_info, karma));
+                ((NavHeaderViewHolder) holder).accountNameTextView.setText(accountName);
+                if (userIconUrl != null && !userIconUrl.equals("")) {
+                    glide.load(userIconUrl)
+                            .apply(RequestOptions.bitmapTransform(new RoundedCornersTransformation(144, 0)))
+                            .error(glide.load(R.drawable.subreddit_default_icon)
+                                    .apply(RequestOptions.bitmapTransform(new RoundedCornersTransformation(144, 0))))
+                            .into(((NavHeaderViewHolder) holder).profileImageView);
+                } else {
+                    glide.load(R.drawable.subreddit_default_icon)
+                            .apply(RequestOptions.bitmapTransform(new RoundedCornersTransformation(144, 0)))
+                            .into(((NavHeaderViewHolder) holder).profileImageView);
+                }
+
+                if (userBannerUrl != null && !userBannerUrl.equals("")) {
+                    glide.load(userBannerUrl).into(((NavHeaderViewHolder) holder).bannerImageView);
+                }
+            } else {
+                ((NavHeaderViewHolder) holder).karmaTextView.setText(R.string.press_here_to_login);
+                ((NavHeaderViewHolder) holder).accountNameTextView.setText(R.string.anonymous_account);
+            }
+
+            if (isInMainPage) {
+                ((NavHeaderViewHolder) holder).dropIconImageView.setImageDrawable(resources.getDrawable(R.drawable.ic_baseline_arrow_drop_down_24px));
+            } else {
+                ((NavHeaderViewHolder) holder).dropIconImageView.setImageDrawable(resources.getDrawable(R.drawable.ic_baseline_arrow_drop_up_24px));
+            }
+
+            ((NavHeaderViewHolder) holder).itemView.setOnClickListener(view -> {
+                if (isInMainPage) {
+                    isInMainPage = false;
+                    ((NavHeaderViewHolder) holder).dropIconImageView.setImageDrawable(resources.getDrawable(R.drawable.ic_baseline_arrow_drop_up_24px));
+                } else {
+                    isInMainPage = true;
+                    ((NavHeaderViewHolder) holder).dropIconImageView.setImageDrawable(resources.getDrawable(R.drawable.ic_baseline_arrow_drop_down_24px));
+                }
+            });
+        } else if (holder instanceof MenuGroupTitleViewHolder) {
+            if (position == 1) {
+                ((MenuGroupTitleViewHolder) holder).titleTextView.setText(R.string.label_account);
+            } else if (position == 6) {
+                ((MenuGroupTitleViewHolder) holder).titleTextView.setText(R.string.label_post);
+            }
+        } else if (holder instanceof MenuItemViewHolder) {
+            int stringId = 0;
+            int drawableId = 0;
+
+            switch (position) {
+                case 2:
+                    stringId = R.string.profile;
+                    drawableId = R.drawable.ic_account_circle_24dp;
+                    break;
+                case 3:
+                    stringId = R.string.subscriptions;
+                    drawableId = R.drawable.ic_subscritptions_bottom_app_bar_24dp;
+                    break;
+                case 4:
+                    stringId = R.string.multi_reddit;
+                    drawableId = R.drawable.ic_multi_reddit_24dp;
+                    break;
+                case 5:
+                    stringId = R.string.inbox;
+                    drawableId = R.drawable.ic_inbox_24dp;
+                    break;
+                case 7:
+                    stringId = R.string.upvoted;
+                    drawableId = R.drawable.ic_arrow_upward_black_24dp;
+                    break;
+                case 8:
+                    stringId = R.string.downvoted;
+                    drawableId = R.drawable.ic_arrow_downward_black_24dp;
+                    break;
+                case 9:
+                    stringId = R.string.hidden;
+                    drawableId = R.drawable.ic_outline_lock_24dp;
+                    break;
+                case 10:
+                    stringId = R.string.saved;
+                    drawableId = R.drawable.ic_outline_bookmarks_24dp;
+                    break;
+                case 11:
+                    stringId = R.string.gilded;
+                    drawableId = R.drawable.ic_star_border_24dp;
+                    break;
+                case 13:
+                    if ((resources.getConfiguration().uiMode & Configuration.UI_MODE_NIGHT_MASK) != Configuration.UI_MODE_NIGHT_YES) {
+                        stringId = R.string.dark_theme;
+                        drawableId = R.drawable.ic_dark_theme_24dp;
+                    } else {
+                        stringId = R.string.light_theme;
+                        drawableId = R.drawable.ic_light_theme_24dp;
+                    }
+                    break;
+                case 14:
+                    stringId = R.string.settings;
+                    drawableId = R.drawable.ic_settings_24dp;
+                    break;
+            }
+
+            ((MenuItemViewHolder) holder).menuTextView.setText(stringId);
+            ((MenuItemViewHolder) holder).menuTextView.setCompoundDrawablesWithIntrinsicBounds(
+                    drawableId, 0, 0, 0);
+        } else if (holder instanceof SubscribedThingViewHolder) {
+            SubscribedSubredditData subreddit = subscribedSubreddits.get(position - CURRENT_MENU_ITEMS);
+            ((SubscribedThingViewHolder) holder).subredditNameTextView.setText(subreddit.getName());
+            String iconUrl = subreddit.getIconUrl();
+            if (iconUrl != null && !iconUrl.equals("")) {
+                glide.load(iconUrl)
+                        .apply(RequestOptions.bitmapTransform(new RoundedCornersTransformation(72, 0)))
+                        .error(glide.load(R.drawable.subreddit_default_icon)
+                                .apply(RequestOptions.bitmapTransform(new RoundedCornersTransformation(72, 0))))
+                        .into(((SubscribedThingViewHolder) holder).iconGifImageView);
+            } else {
+                glide.load(R.drawable.subreddit_default_icon)
+                        .apply(RequestOptions.bitmapTransform(new RoundedCornersTransformation(72, 0)))
+                        .into(((SubscribedThingViewHolder) holder).iconGifImageView);
+            }
+        }
+    }
+
+    @Override
+    public int getItemCount() {
+        if (subscribedSubreddits != null) {
+            return CURRENT_MENU_ITEMS + subscribedSubreddits.size();
+        }
+
+        return CURRENT_MENU_ITEMS;
+    }
+
+    public void setSubscribedSubreddits(List<SubscribedSubredditData> subscribedSubreddits) {
+        this.subscribedSubreddits = (ArrayList<SubscribedSubredditData>) subscribedSubreddits;
+        notifyDataSetChanged();
+    }
+
+    public void changeAccountsDataset(List<Account> accounts) {
+
+    }
+
+    class NavHeaderViewHolder extends RecyclerView.ViewHolder {
+        @BindView(R.id.name_text_view_nav_header_main)
+        TextView accountNameTextView;
+        @BindView(R.id.karma_text_view_nav_header_main)
+        TextView karmaTextView;
+        @BindView(R.id.profile_image_view_nav_header_main)
+        GifImageView profileImageView;
+        @BindView(R.id.banner_image_view_nav_header_main)
+        ImageView bannerImageView;
+        @BindView(R.id.account_switcher_image_view_nav_header_main)
+        ImageView dropIconImageView;
+
+        public NavHeaderViewHolder(@NonNull View itemView) {
+            super(itemView);
+            ButterKnife.bind(this, itemView);
+        }
+    }
+
+    class MenuGroupTitleViewHolder extends RecyclerView.ViewHolder {
+        TextView titleTextView;
+
+        MenuGroupTitleViewHolder(@NonNull View itemView) {
+            super(itemView);
+            titleTextView = (TextView) itemView;
+        }
+    }
+
+    class MenuItemViewHolder extends RecyclerView.ViewHolder {
+        TextView menuTextView;
+
+        MenuItemViewHolder(@NonNull View itemView) {
+            super(itemView);
+            menuTextView = (TextView) itemView;
+        }
+    }
+
+    class DividerViewHolder extends RecyclerView.ViewHolder {
+
+        DividerViewHolder(@NonNull View itemView) {
+            super(itemView);
+        }
+    }
+
+    class SubscribedThingViewHolder extends RecyclerView.ViewHolder {
+        @BindView(R.id.thing_icon_gif_image_view_item_nav_drawer_subscribed_thing)
+        GifImageView iconGifImageView;
+        @BindView(R.id.thing_name_text_view_item_nav_drawer_subscribed_thing)
+        TextView subredditNameTextView;
+
+        SubscribedThingViewHolder(@NonNull View itemView) {
+            super(itemView);
+            ButterKnife.bind(this, itemView);
+        }
+    }
+}

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

@@ -20,7 +20,14 @@
         android:layout_gravity="start"
         android:background="?attr/backgroundColor">
 
-        <androidx.core.widget.NestedScrollView
+        <androidx.recyclerview.widget.RecyclerView
+            android:id="@+id/nav_drawer_recycler_view_main_activity"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:scrollbars="vertical"
+            android:clipToPadding="false" />
+
+        <!--<androidx.core.widget.NestedScrollView
             android:id="@+id/nested_scroll_view_main_activity"
             android:layout_width="match_parent"
             android:layout_height="match_parent"
@@ -237,7 +244,7 @@
 
             </LinearLayout>
 
-        </androidx.core.widget.NestedScrollView>
+        </androidx.core.widget.NestedScrollView>-->
 
     </com.google.android.material.navigation.NavigationView>
 

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

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<View xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="1dp"
+    android:background="@color/dividerColor" />

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

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<TextView xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:padding="16dp"
+    android:text="@string/label_post"
+    android:textSize="?attr/font_default" />

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

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<TextView xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:background="?attr/selectableItemBackground"
+    android:clickable="true"
+    android:drawablePadding="32dp"
+    android:focusable="true"
+    android:gravity="center_vertical"
+    android:padding="16dp"
+    android:textColor="@color/primaryTextColor"
+    android:textSize="?attr/font_default" />

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

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:padding="16dp"
+    android:clickable="true"
+    android:focusable="true"
+    android:background="?attr/selectableItemBackground">
+
+    <pl.droidsonroids.gif.GifImageView
+        android:id="@+id/thing_icon_gif_image_view_item_nav_drawer_subscribed_thing"
+        android:layout_width="24dp"
+        android:layout_height="24dp"
+        android:layout_gravity="center_vertical"
+        android:layout_marginEnd="32dp" />
+
+    <TextView
+        android:id="@+id/thing_name_text_view_item_nav_drawer_subscribed_thing"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_weight="1"
+        android:textColor="@color/primaryTextColor"
+        android:textSize="?attr/font_default"
+        android:layout_gravity="center_vertical" />
+
+</LinearLayout>