Implemented ItemClickListener for the nav drawer.

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

@@ -22,6 +22,7 @@ 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;
@@ -93,6 +94,9 @@ import ml.docilealligator.infinityforreddit.SubscribedUserDatabase.SubscribedUse
 import ml.docilealligator.infinityforreddit.Utils.SharedPreferencesUtils;
 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 {
 
@@ -497,7 +501,75 @@ public class MainActivity extends BaseActivity implements SortTypeSelectionCallb
             fab.setVisibility(View.VISIBLE);
         }
 
-        adapter = new NavigationDrawerRecyclerViewAdapter(this, mAccountName, mProfileImageUrl, mBannerImageUrl, mKarma);
+        adapter = new NavigationDrawerRecyclerViewAdapter(this, mAccountName, mProfileImageUrl,
+                mBannerImageUrl, mKarma, new NavigationDrawerRecyclerViewAdapter.ItemClickListener() {
+            @Override
+            public void onMenuClick(int stringId) {
+                Intent intent = null;
+                switch (stringId) {
+                    case R.string.profile:
+                        intent = new Intent(MainActivity.this, ViewUserDetailActivity.class);
+                        intent.putExtra(ViewUserDetailActivity.EXTRA_USER_NAME_KEY, mAccountName);
+                        break;
+                    case R.string.subscriptions:
+                        intent = new Intent(MainActivity.this, SubscribedThingListingActivity.class);
+                        break;
+                    case R.string.multi_reddit:
+                        intent = new Intent(MainActivity.this, MultiRedditListingActivity.class);
+                        break;
+                    case R.string.inbox:
+                        intent = new Intent(MainActivity.this, ViewMessageActivity.class);
+                        break;
+                    case R.string.upvoted:
+                        intent = new Intent(MainActivity.this, AccountPostsActivity.class);
+                        intent.putExtra(AccountPostsActivity.EXTRA_USER_WHERE, PostDataSource.USER_WHERE_UPVOTED);
+                        break;
+                    case R.string.downvoted:
+                        intent = new Intent(MainActivity.this, AccountPostsActivity.class);
+                        intent.putExtra(AccountPostsActivity.EXTRA_USER_WHERE, PostDataSource.USER_WHERE_DOWNVOTED);
+                        break;
+                    case R.string.hidden:
+                        intent = new Intent(MainActivity.this, AccountPostsActivity.class);
+                        intent.putExtra(AccountPostsActivity.EXTRA_USER_WHERE, PostDataSource.USER_WHERE_HIDDEN);
+                        break;
+                    case R.string.saved:
+                        intent = new Intent(MainActivity.this, AccountSavedThingActivity.class);
+                        break;
+                    case R.string.gilded:
+                        intent = new Intent(MainActivity.this, AccountPostsActivity.class);
+                        intent.putExtra(AccountPostsActivity.EXTRA_USER_WHERE, PostDataSource.USER_WHERE_GILDED);
+                        break;
+                    case R.string.light_theme:
+                        mSharedPreferences.edit().putString(SharedPreferencesUtils.THEME_KEY, "1").apply();
+                        AppCompatDelegate.setDefaultNightMode(MODE_NIGHT_YES);
+                        if(mSharedPreferences.getBoolean(SharedPreferencesUtils.AMOLED_DARK_KEY, false)) {
+                            getTheme().applyStyle(R.style.Theme_Default_AmoledDark, true);
+                        } else {
+                            getTheme().applyStyle(R.style.Theme_Default_NormalDark, true);
+                        }
+                        break;
+                    case R.string.dark_theme:
+                        mSharedPreferences.edit().putString(SharedPreferencesUtils.THEME_KEY, "0").apply();
+                        AppCompatDelegate.setDefaultNightMode(MODE_NIGHT_NO);
+                        getTheme().applyStyle(R.style.Theme_Default, true);
+                        break;
+                    case R.string.settings:
+                        intent = new Intent(MainActivity.this, SettingsActivity.class);
+
+                }
+                if (intent != null) {
+                    startActivity(intent);
+                }
+                drawer.closeDrawers();
+            }
+
+            @Override
+            public void onSubscribedSubredditClick(String subredditName) {
+                Intent intent = new Intent(MainActivity.this, ViewSubredditDetailActivity.class);
+                intent.putExtra(ViewSubredditDetailActivity.EXTRA_SUBREDDIT_NAME_KEY, subredditName);
+                startActivity(intent);
+            }
+        });
         navDrawerRecyclerView.setLayoutManager(new LinearLayoutManager(this));
         navDrawerRecyclerView.setAdapter(adapter);
 

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

@@ -28,6 +28,11 @@ import ml.docilealligator.infinityforreddit.SubscribedSubredditDatabase.Subscrib
 import pl.droidsonroids.gif.GifImageView;
 
 public class NavigationDrawerRecyclerViewAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
+    public interface ItemClickListener {
+        void onMenuClick(int stringId);
+        void onSubscribedSubredditClick(String subredditName);
+    }
+
     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;
@@ -42,12 +47,14 @@ public class NavigationDrawerRecyclerViewAdapter extends RecyclerView.Adapter<Re
     private String userIconUrl;
     private String userBannerUrl;
     private int karma;
+    private ItemClickListener itemClickListener;
     private boolean isLoggedIn;
     private boolean isInMainPage = true;
     private ArrayList<SubscribedSubredditData> subscribedSubreddits;
+    private ArrayList<Account> accounts;
 
     public NavigationDrawerRecyclerViewAdapter(Context context, String accountName, String userIconUrl,
-                                               String userBannerUrl, int karma) {
+                                               String userBannerUrl, int karma, ItemClickListener itemClickListener) {
         this.context = context;
         resources = context.getResources();
         glide = Glide.with(context);
@@ -56,6 +63,7 @@ public class NavigationDrawerRecyclerViewAdapter extends RecyclerView.Adapter<Re
         this.userBannerUrl = userBannerUrl;
         this.karma = karma;
         isLoggedIn = accountName != null;
+        this.itemClickListener = itemClickListener;
     }
 
     @Override
@@ -209,10 +217,13 @@ public class NavigationDrawerRecyclerViewAdapter extends RecyclerView.Adapter<Re
             ((MenuItemViewHolder) holder).menuTextView.setText(stringId);
             ((MenuItemViewHolder) holder).menuTextView.setCompoundDrawablesWithIntrinsicBounds(
                     drawableId, 0, 0, 0);
+            int finalStringId = stringId;
+            ((MenuItemViewHolder) holder).itemView.setOnClickListener(view -> itemClickListener.onMenuClick(finalStringId));
         } else if (holder instanceof SubscribedThingViewHolder) {
             SubscribedSubredditData subreddit = subscribedSubreddits.get(position - CURRENT_MENU_ITEMS);
-            ((SubscribedThingViewHolder) holder).subredditNameTextView.setText(subreddit.getName());
+            String subredditName = subreddit.getName();
             String iconUrl = subreddit.getIconUrl();
+            ((SubscribedThingViewHolder) holder).subredditNameTextView.setText(subredditName);
             if (iconUrl != null && !iconUrl.equals("")) {
                 glide.load(iconUrl)
                         .apply(RequestOptions.bitmapTransform(new RoundedCornersTransformation(72, 0)))
@@ -224,6 +235,10 @@ public class NavigationDrawerRecyclerViewAdapter extends RecyclerView.Adapter<Re
                         .apply(RequestOptions.bitmapTransform(new RoundedCornersTransformation(72, 0)))
                         .into(((SubscribedThingViewHolder) holder).iconGifImageView);
             }
+
+            ((SubscribedThingViewHolder) holder).itemView.setOnClickListener(view -> {
+                itemClickListener.onSubscribedSubredditClick(subredditName);
+            });
         }
     }
 
@@ -242,7 +257,8 @@ public class NavigationDrawerRecyclerViewAdapter extends RecyclerView.Adapter<Re
     }
 
     public void changeAccountsDataset(List<Account> accounts) {
-
+        this.accounts = (ArrayList<Account>) accounts;
+        notifyDataSetChanged();
     }
 
     class NavHeaderViewHolder extends RecyclerView.ViewHolder {
@@ -257,7 +273,7 @@ public class NavigationDrawerRecyclerViewAdapter extends RecyclerView.Adapter<Re
         @BindView(R.id.account_switcher_image_view_nav_header_main)
         ImageView dropIconImageView;
 
-        public NavHeaderViewHolder(@NonNull View itemView) {
+        NavHeaderViewHolder(@NonNull View itemView) {
             super(itemView);
             ButterKnife.bind(this, itemView);
         }