]> gitweb.stoutner.com Git - PrivacyBrowserAndroid.git/blobdiff - app/src/main/java/com/stoutner/privacybrowser/activities/MainWebViewActivity.java
Make pinned settings tab aware.
[PrivacyBrowserAndroid.git] / app / src / main / java / com / stoutner / privacybrowser / activities / MainWebViewActivity.java
index 14095ab0836ef0577e6b83d421652a5193f93d82..fd357a6a4ed478550916b88ddc639026720590e0 100644 (file)
@@ -36,7 +36,6 @@ import android.content.IntentFilter;
 import android.content.SharedPreferences;
 import android.content.pm.PackageManager;
 import android.content.res.Configuration;
-import android.content.res.Resources;
 import android.database.Cursor;
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
@@ -102,40 +101,40 @@ import androidx.core.content.ContextCompat;
 import androidx.core.view.GravityCompat;
 import androidx.drawerlayout.widget.DrawerLayout;
 import androidx.fragment.app.DialogFragment;
-import androidx.fragment.app.Fragment;
 import androidx.fragment.app.FragmentManager;
-import androidx.fragment.app.FragmentPagerAdapter;
 import androidx.swiperefreshlayout.widget.SwipeRefreshLayout;
 import androidx.viewpager.widget.ViewPager;
 
 import com.google.android.material.floatingactionbutton.FloatingActionButton;
 import com.google.android.material.navigation.NavigationView;
 import com.google.android.material.snackbar.Snackbar;
-
 import com.google.android.material.tabs.TabLayout;
+
 import com.stoutner.privacybrowser.BuildConfig;
 import com.stoutner.privacybrowser.R;
+import com.stoutner.privacybrowser.adapters.WebViewPagerAdapter;
 import com.stoutner.privacybrowser.asynctasks.GetHostIpAddresses;
 import com.stoutner.privacybrowser.dialogs.AdConsentDialog;
 import com.stoutner.privacybrowser.dialogs.CreateBookmarkDialog;
 import com.stoutner.privacybrowser.dialogs.CreateBookmarkFolderDialog;
 import com.stoutner.privacybrowser.dialogs.CreateHomeScreenShortcutDialog;
+import com.stoutner.privacybrowser.dialogs.DownloadFileDialog;
 import com.stoutner.privacybrowser.dialogs.DownloadImageDialog;
 import com.stoutner.privacybrowser.dialogs.DownloadLocationPermissionDialog;
 import com.stoutner.privacybrowser.dialogs.EditBookmarkDialog;
 import com.stoutner.privacybrowser.dialogs.EditBookmarkFolderDialog;
 import com.stoutner.privacybrowser.dialogs.HttpAuthenticationDialog;
 import com.stoutner.privacybrowser.dialogs.PinnedMismatchDialog;
+import com.stoutner.privacybrowser.dialogs.SslCertificateErrorDialog;
 import com.stoutner.privacybrowser.dialogs.UrlHistoryDialog;
 import com.stoutner.privacybrowser.dialogs.ViewSslCertificateDialog;
 import com.stoutner.privacybrowser.fragments.WebViewTabFragment;
 import com.stoutner.privacybrowser.helpers.AdHelper;
 import com.stoutner.privacybrowser.helpers.BlockListHelper;
 import com.stoutner.privacybrowser.helpers.BookmarksDatabaseHelper;
+import com.stoutner.privacybrowser.helpers.CheckPinnedMismatchHelper;
 import com.stoutner.privacybrowser.helpers.DomainsDatabaseHelper;
 import com.stoutner.privacybrowser.helpers.OrbotProxyHelper;
-import com.stoutner.privacybrowser.dialogs.DownloadFileDialog;
-import com.stoutner.privacybrowser.dialogs.SslCertificateErrorDialog;
 import com.stoutner.privacybrowser.views.NestedScrollWebView;
 
 import java.io.ByteArrayInputStream;
@@ -151,11 +150,12 @@ import java.util.ArrayList;
 import java.util.Date;
 import java.util.HashMap;
 import java.util.HashSet;
-import java.util.LinkedList;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
 
+// TODO.  The swipe refresh indicator needs to be enabled/disabled when switching tabs.
+
 // AppCompatActivity from android.support.v7.app.AppCompatActivity must be used to have access to the SupportActionBar until the minimum API is >= 21.
 public class MainWebViewActivity extends AppCompatActivity implements CreateBookmarkDialog.CreateBookmarkListener, CreateBookmarkFolderDialog.CreateBookmarkFolderListener,
         DownloadFileDialog.DownloadFileListener, DownloadImageDialog.DownloadImageListener, DownloadLocationPermissionDialog.DownloadLocationPermissionDialogListener, EditBookmarkDialog.EditBookmarkListener,
@@ -168,30 +168,20 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
     // `allowScreenshots` is public static so it can be accessed from everywhere.  It is also used in `onCreate()`.
     public static boolean allowScreenshots;
 
-    // `favoriteIconBitmap` is public static so it can be accessed from `CreateHomeScreenShortcutDialog`, `BookmarksActivity`, `BookmarksDatabaseViewActivity`, `CreateBookmarkDialog`,
-    // `CreateBookmarkFolderDialog`, `EditBookmarkDialog`, `EditBookmarkFolderDialog`, `EditBookmarkDatabaseViewDialog`, and `ViewSslCertificateDialog`.  It is also used in `onCreate()`,
-    // `onCreateBookmark()`, `onCreateBookmarkFolder()`, `onCreateHomeScreenShortcut()`, `onSaveEditBookmark()`, `onSaveEditBookmarkFolder()`, and `applyDomainSettings()`.
+    // `favoriteIconBitmap` is public static so it can be accessed from `BookmarksActivity`, `BookmarksDatabaseViewActivity`, `CreateBookmarkFolderDialog`,
+    // `EditBookmarkDialog`, `EditBookmarkFolderDialog`, `EditBookmarkDatabaseViewDialog`, and `ViewSslCertificateDialog`.  It is also used in `onCreate()`, `onCreateBookmark()`, `onCreateBookmarkFolder()`,
+    // `onCreateHomeScreenShortcut()`, `onSaveEditBookmark()`, `onSaveEditBookmarkFolder()`, and `applyDomainSettings()`.
     public static Bitmap favoriteIconBitmap;
 
     // `favoriteIconDefaultBitmap` public static so it can be accessed from `PinnedMismatchDialog`.  It is also used in `onCreate()` and `applyDomainSettings`.
     public static Bitmap favoriteIconDefaultBitmap;
 
-    // `formattedUrlString` is public static so it can be accessed from `AddDomainDialog`, `BookmarksActivity`, `DomainSettingsFragment`, `CreateBookmarkDialog`,
-    // and `PinnedMismatchDialog`.
+    // TODO Remove.
+    // `formattedUrlString` is public static so it can be accessed from `AddDomainDialog`, `BookmarksActivity`, `DomainSettingsFragment`, and `PinnedMismatchDialog`.
     // It is also used in `onCreate()`, `onOptionsItemSelected()`, `onNavigationItemSelected()`, `onCreateHomeScreenShortcutCreate()`, `loadUrlFromTextBox()`, and `applyProxyThroughOrbot()`.
     public static String formattedUrlString;
 
-    // `sslCertificate` is public static so it can be accessed from `DomainsActivity`, `DomainsListFragment`, `DomainSettingsFragment`, `PinnedMismatchDialog`, and `ViewSslCertificateDialog`.
-    // It is also used in `onCreate()` and `checkPinnedMismatch()`.
-    public static SslCertificate sslCertificate;
-
-    // `currentHostIpAddresses` is public static so it can be accessed from `DomainSettingsFragment`, `GetHostIpAddresses()`, and `ViewSslCertificateDialog`.
-    // It is also used in `onCreate()` and `GetHostIpAddresses()`.
-    public static String currentHostIpAddresses;
-
-    // The getting IP addresses tracker is used in `onCreate() and `GetHostIpAddresses`.
-    public static boolean gettingIpAddresses;
-
+    // TODO.  We are going to have to move this to the NestedScrollWebView.
     // The URL loading tracker is public static so it can be accessed from `GetHostIpAddresses`.
     // It is also used in `onCreate()`, `onCreateOptionsMenu()`, `loadUrl()`, `applyDomainSettings()`, and `GetHostIpAddresses`.
     public static boolean urlIsLoading;
@@ -199,12 +189,13 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
     // `orbotStatus` is public static so it can be accessed from `OrbotProxyHelper`.  It is also used in `onCreate()`, `onResume()`, and `applyProxyThroughOrbot()`.
     public static String orbotStatus;
 
-    // `webViewTitle` is public static so it can be accessed from `CreateBookmarkDialog`.  It is also used in `onCreate()`.
-    public static String webViewTitle;
-
+    // TODO.
     // `appliedUserAgentString` is public static so it can be accessed from `ViewSourceActivity`.  It is also used in `applyDomainSettings()`.
     public static String appliedUserAgentString;
 
+    // The WebView pager adapter is accessed from `PinnedMismatchDialog`.  It is also used in `onCreate()`, `onResume()`, and `addTab()`.
+    public static WebViewPagerAdapter webViewPagerAdapter;
+
     // `reloadOnRestart` is public static so it can be accessed from `SettingsFragment`.  It is also used in `onRestart()`
     public static boolean reloadOnRestart;
 
@@ -214,60 +205,13 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
     // `restartFromBookmarksActivity` is public static so it can be accessed from `BookmarksActivity`.  It is also used in `onRestart()`.
     public static boolean restartFromBookmarksActivity;
 
-    // The block list versions are public static so they can be accessed from `AboutTabFragment`.  They are also used in `onCreate()`.
+    // The blocklist versions are public static so they can be accessed from `AboutTabFragment`.  They are also used in `onCreate()`.
     public static String easyListVersion;
     public static String easyPrivacyVersion;
     public static String fanboysAnnoyanceVersion;
     public static String fanboysSocialVersion;
     public static String ultraPrivacyVersion;
 
-    // The request items are public static so they can be accessed by `BlockListHelper`, `RequestsArrayAdapter`, and `ViewRequestsDialog`.  They are also used in `onCreate()` and `onPrepareOptionsMenu()`.
-    public static List<String[]> resourceRequests;
-    public static String[] whiteListResultStringArray;
-    private int blockedRequests;
-    private int easyListBlockedRequests;
-    private int easyPrivacyBlockedRequests;
-    private int fanboysAnnoyanceListBlockedRequests;
-    private int fanboysSocialBlockingListBlockedRequests;
-    private int ultraPrivacyBlockedRequests;
-    private int thirdPartyBlockedRequests;
-
-    public final static int REQUEST_DISPOSITION = 0;
-    public final static int REQUEST_URL = 1;
-    public final static int REQUEST_BLOCKLIST = 2;
-    public final static int REQUEST_SUBLIST = 3;
-    public final static int REQUEST_BLOCKLIST_ENTRIES = 4;
-    public final static int REQUEST_BLOCKLIST_ORIGINAL_ENTRY = 5;
-
-    public final static int REQUEST_DEFAULT = 0;
-    public final static int REQUEST_ALLOWED = 1;
-    public final static int REQUEST_THIRD_PARTY = 2;
-    public final static int REQUEST_BLOCKED = 3;
-
-    public final static int MAIN_WHITELIST = 1;
-    public final static int FINAL_WHITELIST = 2;
-    public final static int DOMAIN_WHITELIST = 3;
-    public final static int DOMAIN_INITIAL_WHITELIST = 4;
-    public final static int DOMAIN_FINAL_WHITELIST = 5;
-    public final static int THIRD_PARTY_WHITELIST = 6;
-    public final static int THIRD_PARTY_DOMAIN_WHITELIST = 7;
-    public final static int THIRD_PARTY_DOMAIN_INITIAL_WHITELIST = 8;
-
-    public final static int MAIN_BLACKLIST = 9;
-    public final static int INITIAL_BLACKLIST = 10;
-    public final static int FINAL_BLACKLIST = 11;
-    public final static int DOMAIN_BLACKLIST = 12;
-    public final static int DOMAIN_INITIAL_BLACKLIST = 13;
-    public final static int DOMAIN_FINAL_BLACKLIST = 14;
-    public final static int DOMAIN_REGULAR_EXPRESSION_BLACKLIST = 15;
-    public final static int THIRD_PARTY_BLACKLIST = 16;
-    public final static int THIRD_PARTY_INITIAL_BLACKLIST = 17;
-    public final static int THIRD_PARTY_DOMAIN_BLACKLIST = 18;
-    public final static int THIRD_PARTY_DOMAIN_INITIAL_BLACKLIST = 19;
-    public final static int THIRD_PARTY_REGULAR_EXPRESSION_BLACKLIST = 20;
-    public final static int THIRD_PARTY_DOMAIN_REGULAR_EXPRESSION_BLACKLIST = 21;
-    public final static int REGULAR_EXPRESSION_BLACKLIST = 22;
-
     // `blockAllThirdPartyRequests` is public static so it can be accessed from `RequestsActivity`.
     // It is also used in `onCreate()`, `onPrepareOptionsMenu()`, `onOptionsItemSelected()`, and `applyAppSettings()`
     public static boolean blockAllThirdPartyRequests;
@@ -276,17 +220,6 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
     // `onSaveEditBookmark()`, `onSaveEditBookmarkFolder()`, and `loadBookmarksFolder()`.
     public static String currentBookmarksFolder;
 
-    // The pinned variables are public static so they can be accessed from `PinnedMismatchDialog`.  They are also used in `onCreate()`, `applyDomainSettings()`, and `checkPinnedMismatch()`.
-    public static String pinnedSslIssuedToCName;
-    public static String pinnedSslIssuedToOName;
-    public static String pinnedSslIssuedToUName;
-    public static String pinnedSslIssuedByCName;
-    public static String pinnedSslIssuedByOName;
-    public static String pinnedSslIssuedByUName;
-    public static Date pinnedSslStartDate;
-    public static Date pinnedSslEndDate;
-    public static String pinnedHostIpAddresses;
-
     // The user agent constants are public static so they can be accessed from `SettingsFragment`, `DomainsActivity`, and `DomainSettingsFragment`.
     public final static int UNRECOGNIZED_USER_AGENT = -1;
     public final static int SETTINGS_WEBVIEW_DEFAULT_USER_AGENT = 1;
@@ -297,22 +230,6 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
 
 
 
-    // `pinnedDomainSslCertificate` is used in `onCreate()`, `applyDomainSettings()`, and `checkPinnedMismatch()`.
-    private static boolean pinnedSslCertificate;
-
-    // `pinnedIpAddress` is used in `applyDomainSettings()` and `checkPinnedMismatch()`.
-    private static boolean pinnedIpAddresses;
-
-    // `ignorePinnedDomainInformation` is used in `onSslMismatchProceed()`, `applyDomainSettings()`, and `checkPinnedMismatch()`.
-    private static boolean ignorePinnedDomainInformation;
-
-    // The fragment manager is initialized in `onCreate()` and accessed from the static `checkPinnedMismatch()`.
-    private static FragmentManager fragmentManager;
-
-
-    // A handle for the activity is set in `onCreate()` and accessed in `WebViewPagerAdapter`.
-    private Activity activity;
-
     // `navigatingHistory` is used in `onCreate()`, `onNavigationItemSelected()`, `onSslMismatchBack()`, and `applyDomainSettings()`.
     private boolean navigatingHistory;
 
@@ -344,6 +261,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
     // `saveFormDataEnabled` is used in `onCreate()`, `onPrepareOptionsMenu()`, `onOptionsItemSelected()`, and `applyDomainSettings()`.  It can be removed once the minimum API >= 26.
     private boolean saveFormDataEnabled;
 
+    // TODO Move to NestedScrollWebView.
     // `nightMode` is used in `onCreate()`, `onPrepareOptionsMenu()`, `onOptionsItemSelected()`, and  `applyDomainSettings()`.
     private boolean nightMode;
 
@@ -359,14 +277,12 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
     // `refreshMenuItem` is used in `onCreate()` and `onCreateOptionsMenu()`.
     private MenuItem refreshMenuItem;
 
-    // The WebView pager adapter is used in `onCreate()`, `onResume()`, and `addTab()`.
-    private WebViewPagerAdapter webViewPagerAdapter;
-
     // The navigation requests menu item is used in `onCreate()` and accessed from `WebViewPagerAdapter`.
     private MenuItem navigationRequestsMenuItem;
 
+    // TODO.  This could probably be removed.
     // The blocklist helper is used in `onCreate()` and `WebViewPagerAdapter`.
-    BlockListHelper blockListHelper;
+    private BlockListHelper blockListHelper;
 
     // The blocklists are populated in `onCreate()` and accessed from `WebViewPagerAdapter`.
     private ArrayList<List<String[]>> easyList;
@@ -543,10 +459,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
         // Set the content view.
         setContentView(R.layout.main_framelayout);
 
-        // Get handles for views, resources, and managers.
-        activity = this;
-        Resources resources = getResources();
-        fragmentManager = getSupportFragmentManager();
+        // Get handles for the input method manager and toolbar.
         inputMethodManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
         Toolbar toolbar = findViewById(R.id.toolbar);
 
@@ -557,14 +470,14 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
         // This is needed to get rid of the Android Studio warning that the action bar might be null.
         assert actionBar != null;
 
-        // Add the custom `url_app_bar` layout, which shows the favorite icon and the URL text bar.
+        // Add the custom layout, which shows the URL text bar.
         actionBar.setCustomView(R.layout.url_app_bar);
         actionBar.setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM);
 
         // Initialize the foreground color spans for highlighting the URLs.  We have to use the deprecated `getColor()` until API >= 23.
-        redColorSpan = new ForegroundColorSpan(resources.getColor(R.color.red_a700));
-        initialGrayColorSpan = new ForegroundColorSpan(resources.getColor(R.color.gray_500));
-        finalGrayColorSpan = new ForegroundColorSpan(resources.getColor(R.color.gray_500));
+        redColorSpan = new ForegroundColorSpan(getResources().getColor(R.color.red_a700));
+        initialGrayColorSpan = new ForegroundColorSpan(getResources().getColor(R.color.gray_500));
+        finalGrayColorSpan = new ForegroundColorSpan(getResources().getColor(R.color.gray_500));
 
         // Get a handle for `urlTextBox`.
         EditText urlEditText = findViewById(R.id.url_edittext);
@@ -632,9 +545,6 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
         // Instantiate the block list helper.
         blockListHelper = new BlockListHelper();
 
-        // Initialize the list of resource requests.
-        resourceRequests = new ArrayList<>();
-
         // Parse the block lists.
         easyList = blockListHelper.parseBlockList(getAssets(), "blocklists/easylist.txt");
         easyPrivacy = blockListHelper.parseBlockList(getAssets(), "blocklists/easyprivacy.txt");
@@ -675,7 +585,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
         navigationRequestsMenuItem = navigationMenu.getItem(6);
 
         // Initialize the web view pager adapter.
-        webViewPagerAdapter = new WebViewPagerAdapter(fragmentManager);
+        webViewPagerAdapter = new WebViewPagerAdapter(getSupportFragmentManager());
 
         // Set the pager adapter on the web view pager.
         webViewPager.setAdapter(webViewPagerAdapter);
@@ -693,7 +603,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
             @Override
             public void onPageSelected(int position) {
                 // Get the WebView tab fragment.
-                WebViewTabFragment webViewTabFragment = webViewPagerAdapter.webViewFragmentsList.get(position);
+                WebViewTabFragment webViewTabFragment = webViewPagerAdapter.getPageFragment(position);
 
                 // Get the fragment view.
                 View fragmentView = webViewTabFragment.getView();
@@ -766,31 +676,36 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
             @Override
             public void onTabReselected(TabLayout.Tab tab) {
                 // Instantiate the View SSL Certificate dialog.
-                DialogFragment viewSslCertificateDialogFragment = new ViewSslCertificateDialog();
+                DialogFragment viewSslCertificateDialogFragment = ViewSslCertificateDialog.displayDialog(currentWebView.getWebViewFragmentId());
 
                 // Display the View SSL Certificate dialog.
                 viewSslCertificateDialogFragment.show(getSupportFragmentManager(), getString(R.string.view_ssl_certificate));
             }
         });
 
-        // Add the first tab.
-        webViewPagerAdapter.addPage();
+        // Add the first tab.  (It doesn't matter what view is passed.  That is just required as part of the ImageView `onClick()` syntax).
+        addTab(webViewPager);
 
         // Set the bookmarks drawer resources according to the theme.  This can't be done in the layout due to compatibility issues with the `DrawerLayout` support widget.
+        // The deprecated `getResources().getDrawable()` must be used until the minimum API >= 21 and and `getResources().getColor()` must be used until the minimum API >= 23.
         if (darkTheme) {
-            launchBookmarksActivityFab.setImageDrawable(resources.getDrawable(R.drawable.bookmarks_dark));
-            createBookmarkFolderFab.setImageDrawable(resources.getDrawable(R.drawable.create_folder_dark));
-            createBookmarkFab.setImageDrawable(resources.getDrawable(R.drawable.create_bookmark_dark));
-            bookmarksListView.setBackgroundColor(resources.getColor(R.color.gray_850));
+            launchBookmarksActivityFab.setImageDrawable(getResources().getDrawable(R.drawable.bookmarks_dark));
+            createBookmarkFolderFab.setImageDrawable(getResources().getDrawable(R.drawable.create_folder_dark));
+            createBookmarkFab.setImageDrawable(getResources().getDrawable(R.drawable.create_bookmark_dark));
+            bookmarksListView.setBackgroundColor(getResources().getColor(R.color.gray_850));
         } else {
-            launchBookmarksActivityFab.setImageDrawable(resources.getDrawable(R.drawable.bookmarks_light));
-            createBookmarkFolderFab.setImageDrawable(resources.getDrawable(R.drawable.create_folder_light));
-            createBookmarkFab.setImageDrawable(resources.getDrawable(R.drawable.create_bookmark_light));
-            bookmarksListView.setBackgroundColor(resources.getColor(R.color.white));
+            launchBookmarksActivityFab.setImageDrawable(getResources().getDrawable(R.drawable.bookmarks_light));
+            createBookmarkFolderFab.setImageDrawable(getResources().getDrawable(R.drawable.create_folder_light));
+            createBookmarkFab.setImageDrawable(getResources().getDrawable(R.drawable.create_bookmark_light));
+            bookmarksListView.setBackgroundColor(getResources().getColor(R.color.white));
         }
 
         // Set the launch bookmarks activity FAB to launch the bookmarks activity.
         launchBookmarksActivityFab.setOnClickListener(v -> {
+            // Store the current WebView url and title in the bookmarks activity.
+            BookmarksActivity.currentWebViewUrl = currentWebView.getUrl();
+            BookmarksActivity.currentWebViewTitle = currentWebView.getTitle();
+
             // Create an intent to launch the bookmarks activity.
             Intent bookmarksIntent = new Intent(getApplicationContext(), BookmarksActivity.class);
 
@@ -805,14 +720,16 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
         createBookmarkFolderFab.setOnClickListener(v -> {
             // Show the create bookmark folder dialog and name the instance `@string/create_folder`.
             DialogFragment createBookmarkFolderDialog = new CreateBookmarkFolderDialog();
-            createBookmarkFolderDialog.show(fragmentManager, resources.getString(R.string.create_folder));
+            createBookmarkFolderDialog.show(getSupportFragmentManager(), getString(R.string.create_folder));
         });
 
         // Set the create new bookmark FAB to display an alert dialog.
         createBookmarkFab.setOnClickListener(view -> {
-            // Show the create bookmark dialog and name the instance `@string/create_bookmark`.
-            DialogFragment createBookmarkDialog = new CreateBookmarkDialog();
-            createBookmarkDialog.show(fragmentManager, resources.getString(R.string.create_bookmark));
+            // Instantiate the create bookmark dialog.
+            DialogFragment createBookmarkDialog = CreateBookmarkDialog.createBookmark(currentWebView.getUrl(), currentWebView.getTitle(), favoriteIconBitmap);
+
+            // Display the create bookmark dialog.
+            createBookmarkDialog.show(getSupportFragmentManager(), getString(R.string.create_bookmark));
         });
 
         // Search for the string on the page whenever a character changes in the `findOnPageEditText`.
@@ -915,11 +832,11 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
 
                 // Show the edit bookmark folder `AlertDialog` and name the instance `@string/edit_folder`.
                 DialogFragment editBookmarkFolderDialog = EditBookmarkFolderDialog.folderDatabaseId(databaseId);
-                editBookmarkFolderDialog.show(fragmentManager, resources.getString(R.string.edit_folder));
+                editBookmarkFolderDialog.show(getSupportFragmentManager(), getString(R.string.edit_folder));
             } else {
                 // Show the edit bookmark `AlertDialog` and name the instance `@string/edit_bookmark`.
                 DialogFragment editBookmarkDialog = EditBookmarkDialog.bookmarkDatabaseId(databaseId);
-                editBookmarkDialog.show(fragmentManager, resources.getString(R.string.edit_bookmark));
+                editBookmarkDialog.show(getSupportFragmentManager(), getString(R.string.edit_bookmark));
             }
 
             // Consume the event.
@@ -927,11 +844,11 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
         });
 
         // Get the status bar pixel size.
-        int statusBarResourceId = resources.getIdentifier("status_bar_height", "dimen", "android");
-        int statusBarPixelSize = resources.getDimensionPixelSize(statusBarResourceId);
+        int statusBarResourceId = getResources().getIdentifier("status_bar_height", "dimen", "android");
+        int statusBarPixelSize = getResources().getDimensionPixelSize(statusBarResourceId);
 
         // Get the resource density.
-        float screenDensity = resources.getDisplayMetrics().density;
+        float screenDensity = getResources().getDisplayMetrics().density;
 
         // Calculate the drawer header padding.  This is used to move the text in the drawer headers below any cutouts.
         drawerHeaderPaddingLeftAndRight = (int) (15 * screenDensity);
@@ -974,7 +891,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                     navigationBackMenuItem.setEnabled(currentWebView.canGoBack());
                     navigationForwardMenuItem.setEnabled(currentWebView.canGoForward());
                     navigationHistoryMenuItem.setEnabled((currentWebView.canGoBack() || currentWebView.canGoForward()));
-                    navigationRequestsMenuItem.setTitle(getString(R.string.requests) + " - " + blockedRequests);
+                    navigationRequestsMenuItem.setTitle(getString(R.string.requests) + " - " + currentWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
 
                     // Hide the keyboard (if displayed).
                     inputMethodManager.hideSoftInputFromWindow(currentWebView.getWindowToken(), 0);
@@ -1016,11 +933,17 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
         saveFormDataEnabled = false;  // Form data can be removed once the minimum API >= 26.
         nightMode = false;
 
+        // Inflate a bare WebView to get the default user agent.  It is not used to render content on the screen.
+        @SuppressLint("InflateParams") View webViewLayout = getLayoutInflater().inflate(R.layout.bare_webview, null, false);
+
+        // Get a handle for the WebView.
+        WebView bareWebView = webViewLayout.findViewById(R.id.bare_webview);
+
         // Store the default user agent.
-        // TODO webViewDefaultUserAgent = mainWebView.getSettings().getUserAgentString();
+        webViewDefaultUserAgent = bareWebView.getSettings().getUserAgentString();
 
-        // Initialize the WebView title.
-        webViewTitle = getString(R.string.no_title);
+        // Destroy the bare WebView.
+        bareWebView.destroy();
 
         // Initialize the favorite icon bitmap.  `ContextCompat` must be used until API >= 21.
         Drawable favoriteIconDrawable = ContextCompat.getDrawable(getApplicationContext(), R.drawable.world);
@@ -1035,7 +958,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
 
         // Initialize the user agent array adapter and string array.
         userAgentNamesArray = ArrayAdapter.createFromResource(this, R.array.user_agent_names, R.layout.spinner_item);
-        userAgentDataArray = resources.getStringArray(R.array.user_agent_data);
+        userAgentDataArray = getResources().getStringArray(R.array.user_agent_data);
 
         // Get the intent that started the app.
         Intent launchingIntent = getIntent();
@@ -1129,7 +1052,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
             sendBroadcast(orbotIntent);
         }
 
-        // Apply the app settings if returning from the Settings activity..
+        // Apply the app settings if returning from the Settings activity.
         if (reapplyAppSettingsOnRestart) {
             // Apply the app settings.
             applyAppSettings();
@@ -1137,8 +1060,22 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
             // Reload the webpage if displaying of images has been disabled in the Settings activity.
             if (reloadOnRestart) {
                 // Reload the WebViews.
-                // TODO
-                currentWebView.reload();
+                for (int i = 0; i < webViewPagerAdapter.getCount(); i++) {
+                    // Get the WebView tab fragment.
+                    WebViewTabFragment webViewTabFragment = webViewPagerAdapter.getPageFragment(i);
+
+                    // Get the fragment view.
+                    View fragmentView = webViewTabFragment.getView();
+
+                    // Only reload the WebViews if they exist.
+                    if (fragmentView != null) {
+                        // Get the nested scroll WebView from the tab fragment.
+                        NestedScrollWebView nestedScrollWebView = fragmentView.findViewById(R.id.nestedscroll_webview);
+
+                        // Reload the WebView.  This doesn't seem to work if for WebViews that aren't visible.
+                        nestedScrollWebView.reload();
+                    }
+                }
 
                 // Reset `reloadOnRestartBoolean`.
                 reloadOnRestart = false;
@@ -1148,10 +1085,11 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
             reapplyAppSettingsOnRestart = false;
         }
 
+        // TODO apply to all the tabs.
         // Apply the domain settings if returning from the Domains activity.
         if (reapplyDomainSettingsOnRestart) {
             // Reapply the domain settings.
-            applyDomainSettings(formattedUrlString, false, true);
+            applyDomainSettings(currentWebView, formattedUrlString, false, true);
 
             // Reset `reapplyDomainSettingsOnRestart`.
             reapplyDomainSettingsOnRestart = false;
@@ -1191,9 +1129,9 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
         // Run the default commands.
         super.onResume();
 
-        for (int i = 0; i < webViewPagerAdapter.webViewFragmentsList.size(); i++) {
+        for (int i = 0; i < webViewPagerAdapter.getCount(); i++) {
             // Get the WebView tab fragment.
-            WebViewTabFragment webViewTabFragment = webViewPagerAdapter.webViewFragmentsList.get(i);
+            WebViewTabFragment webViewTabFragment = webViewPagerAdapter.getPageFragment(i);
 
             // Get the fragment view.
             View fragmentView = webViewTabFragment.getView();
@@ -1203,10 +1141,10 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                 // Get the nested scroll WebView from the tab fragment.
                 NestedScrollWebView nestedScrollWebView = fragmentView.findViewById(R.id.nestedscroll_webview);
 
-                // Pause the nested scroll WebView JavaScript timers.
+                // Resume the nested scroll WebView JavaScript timers.
                 nestedScrollWebView.resumeTimers();
 
-                // Pause the nested scroll WebView.
+                // Resume the nested scroll WebView.
                 nestedScrollWebView.onResume();
             }
         }
@@ -1246,9 +1184,9 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
         // Run the default commands.
         super.onPause();
 
-        for (int i = 0; i < webViewPagerAdapter.webViewFragmentsList.size(); i++) {
+        for (int i = 0; i < webViewPagerAdapter.getCount(); i++) {
             // Get the WebView tab fragment.
-            WebViewTabFragment webViewTabFragment = webViewPagerAdapter.webViewFragmentsList.get(i);
+            WebViewTabFragment webViewTabFragment = webViewPagerAdapter.getPageFragment(i);
 
             // Get the fragment view.
             View fragmentView = webViewTabFragment.getView();
@@ -1379,11 +1317,37 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
         MenuItem nightModeMenuItem = menu.findItem(R.id.night_mode);
         MenuItem proxyThroughOrbotMenuItem = menu.findItem(R.id.proxy_through_orbot);
 
-        // Set the text for the domain menu item.
-        if (currentWebView.getDomainSettingsApplied()) {
-            addOrEditDomain.setTitle(R.string.edit_domain_settings);
-        } else {
-            addOrEditDomain.setTitle(R.string.add_domain_settings);
+        // Initialize the current user agent string and the font size.
+        String currentUserAgent = getString(R.string.user_agent_privacy_browser);
+        int fontSize = 100;
+
+        // Set items that require the current web view to be populated.  It will be null when the program is first opened, as `onPrepareOptionsMenu()` is called before the first WebView is initialized.
+        if (currentWebView != null) {
+            // Set the add or edit domain text.
+            if (currentWebView.getDomainSettingsApplied()) {
+                addOrEditDomain.setTitle(R.string.edit_domain_settings);
+            } else {
+                addOrEditDomain.setTitle(R.string.add_domain_settings);
+            }
+
+            // Get the current user agent from the WebView.
+            currentUserAgent = currentWebView.getSettings().getUserAgentString();
+
+            // Get the current font size from the
+            fontSize = currentWebView.getSettings().getTextZoom();
+
+            // Set the status of the display images menu item.
+            displayImagesMenuItem.setChecked(currentWebView.getSettings().getLoadsImagesAutomatically());
+
+            // Initialize the display names for the blocklists with the number of blocked requests.
+            blocklistsMenuItem.setTitle(getString(R.string.blocklists) + " - " + currentWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
+            easyListMenuItem.setTitle(currentWebView.getRequestsCount(NestedScrollWebView.EASY_LIST_BLOCKED_REQUESTS) + " - " + getString(R.string.easylist));
+            easyPrivacyMenuItem.setTitle(currentWebView.getRequestsCount(NestedScrollWebView.EASY_PRIVACY_BLOCKED_REQUESTS) + " - " + getString(R.string.easyprivacy));
+            fanboysAnnoyanceListMenuItem.setTitle(currentWebView.getRequestsCount(NestedScrollWebView.FANBOYS_ANNOYANCE_LIST_BLOCKED_REQUESTS) + " - " + getString(R.string.fanboys_annoyance_list));
+            fanboysSocialBlockingListMenuItem.setTitle(currentWebView.getRequestsCount(NestedScrollWebView.FANBOYS_SOCIAL_BLOCKING_LIST_BLOCKED_REQUESTS) + " - " +
+                    getString(R.string.fanboys_social_blocking_list));
+            ultraPrivacyMenuItem.setTitle(currentWebView.getRequestsCount(NestedScrollWebView.ULTRA_PRIVACY_BLOCKED_REQUESTS) + " - " + getString(R.string.ultraprivacy));
+            blockAllThirdPartyRequestsMenuItem.setTitle(currentWebView.getRequestsCount(NestedScrollWebView.THIRD_PARTY_BLOCKED_REQUESTS) + " - " + getString(R.string.block_all_third_party_requests));
         }
 
         // Set the status of the menu item checkboxes.
@@ -1398,7 +1362,6 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
         ultraPrivacyMenuItem.setChecked(ultraPrivacyEnabled);
         blockAllThirdPartyRequestsMenuItem.setChecked(blockAllThirdPartyRequests);
         swipeToRefreshMenuItem.setChecked(swipeRefreshLayout.isEnabled());
-        // TODO displayImagesMenuItem.setChecked(mainWebView.getSettings().getLoadsImagesAutomatically());
         nightModeMenuItem.setChecked(nightMode);
         proxyThroughOrbotMenuItem.setChecked(proxyThroughOrbot);
 
@@ -1443,19 +1406,6 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
         // Disable Fanboy's Social Blocking List if Fanboy's Annoyance List is checked.
         fanboysSocialBlockingListMenuItem.setEnabled(!fanboysAnnoyanceListEnabled);
 
-        // Initialize the display names for the blocklists with the number of blocked requests.
-        blocklistsMenuItem.setTitle(getString(R.string.blocklists) + " - " + blockedRequests);
-        easyListMenuItem.setTitle(easyListBlockedRequests + " - " + getString(R.string.easylist));
-        easyPrivacyMenuItem.setTitle(easyPrivacyBlockedRequests + " - " + getString(R.string.easyprivacy));
-        fanboysAnnoyanceListMenuItem.setTitle(fanboysAnnoyanceListBlockedRequests + " - " + getString(R.string.fanboys_annoyance_list));
-        fanboysSocialBlockingListMenuItem.setTitle(fanboysSocialBlockingListBlockedRequests + " - " + getString(R.string.fanboys_social_blocking_list));
-        ultraPrivacyMenuItem.setTitle(ultraPrivacyBlockedRequests + " - " + getString(R.string.ultraprivacy));
-        blockAllThirdPartyRequestsMenuItem.setTitle(thirdPartyBlockedRequests + " - " + getString(R.string.block_all_third_party_requests));
-
-        // Get the current user agent.
-        // TODO String currentUserAgent = mainWebView.getSettings().getUserAgentString();
-        String currentUserAgent = "";
-
         // Select the current user agent menu item.  A switch statement cannot be used because the user agents are not compile time constants.
         if (currentUserAgent.equals(getResources().getStringArray(R.array.user_agent_data)[0])) {  // Privacy Browser.
             menu.findItem(R.id.user_agent_privacy_browser).setChecked(true);
@@ -1485,9 +1435,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
             menu.findItem(R.id.user_agent_custom).setChecked(true);
         }
 
-        // Initialize font size variables.
-        // TODO int fontSize = mainWebView.getSettings().getTextZoom();
-        int fontSize = 100;
+        // Instantiate the font size title and the selected font size menu item.
         String fontSizeTitle;
         MenuItem selectedFontSizeMenuItem;
 
@@ -1607,6 +1555,11 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                     reapplyDomainSettingsOnRestart = true;
                     currentDomainName = "";
 
+                    // TODO.  Move these to `putExtra`.  The certificate can be stored as strings.
+                    // Store the current SSL certificate and IP addresses in the domains activity.
+                    DomainsActivity.currentSslCertificate = currentWebView.getCertificate();
+                    DomainsActivity.currentIpAddresses = currentWebView.getCurrentIpAddresses();
+
                     // Create an intent to launch the domains activity.
                     Intent domainsIntent = new Intent(this, DomainsActivity.class);
 
@@ -1631,6 +1584,11 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                     // Create the domain and store the database ID.
                     int newDomainDatabaseId = domainsDatabaseHelper.addDomain(currentDomain);
 
+                    // TODO.  Move these to `putExtra`.  The certificate can be stored as strings.
+                    // Store the current SSL certificate and IP addresses in the domains activity.
+                    DomainsActivity.currentSslCertificate = currentWebView.getCertificate();
+                    DomainsActivity.currentIpAddresses = currentWebView.getCurrentIpAddresses();
+
                     // Create an intent to launch the domains activity.
                     Intent domainsIntent = new Intent(this, DomainsActivity.class);
 
@@ -2138,7 +2096,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
 
             case R.id.share_url:
                 // Setup the share string.
-                String shareString = webViewTitle + " – " + formattedUrlString;
+                String shareString = currentWebView.getTitle() + " – " + formattedUrlString;
 
                 // Create the share intent.
                 Intent shareIntent = new Intent(Intent.ACTION_SEND);
@@ -2225,7 +2183,10 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                 // Get the current tab number.
                 int currentTabNumber = tabLayout.getSelectedTabPosition();
 
-                // Delete the tab and page.
+                // Delete the current tab.
+                tabLayout.removeTabAt(currentTabNumber);
+
+                // Delete the current page.
                 webViewPagerAdapter.deletePage(currentTabNumber);
                 break;
 
@@ -2312,9 +2273,23 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
 
                 // Clear the cache.
                 if (clearEverything || sharedPreferences.getBoolean("clear_cache", true)) {
-                    // Clear the cache.
-                    // TODO
-                    currentWebView.clearCache(true);
+                    // Clear the cache from each WebView.
+                    for (int i = 0; i < webViewPagerAdapter.getCount(); i++) {
+                        // Get the WebView tab fragment.
+                        WebViewTabFragment webViewTabFragment = webViewPagerAdapter.getPageFragment(i);
+
+                        // Get the fragment view.
+                        View fragmentView = webViewTabFragment.getView();
+
+                        // Only clear the cache if the WebView exists.
+                        if (fragmentView != null) {
+                            // Get the nested scroll WebView from the tab fragment.
+                            NestedScrollWebView nestedScrollWebView = fragmentView.findViewById(R.id.nestedscroll_webview);
+
+                            // Clear the cache for this WebView.
+                            nestedScrollWebView.clearCache(true);
+                        }
+                    }
 
                     // Manually delete the cache directories.
                     try {
@@ -2333,24 +2308,36 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                     }
                 }
 
-                // Clear SSL certificate preferences.
-                // TODO
-                currentWebView.clearSslPreferences();
+                // Wipe out each WebView.
+                for (int i = 0; i < webViewPagerAdapter.getCount(); i++) {
+                    // Get the WebView tab fragment.
+                    WebViewTabFragment webViewTabFragment = webViewPagerAdapter.getPageFragment(i);
+
+                    // Get the fragment view.
+                    View fragmentView = webViewTabFragment.getView();
+
+                    // Only wipe out the WebView if it exists.
+                    if (fragmentView != null) {
+                        // Get the nested scroll WebView from the tab fragment.
+                        NestedScrollWebView nestedScrollWebView = fragmentView.findViewById(R.id.nestedscroll_webview);
 
-                // Clear the back/forward history.
-                // TODO
-                currentWebView.clearHistory();
+                        // Clear SSL certificate preferences for this WebView.
+                        nestedScrollWebView.clearSslPreferences();
 
-                // Clear `formattedUrlString`.
+                        // Clear the back/forward history for this WebView.
+                        nestedScrollWebView.clearHistory();
+
+                        // Destroy the internal state of `mainWebView`.
+                        nestedScrollWebView.destroy();
+                    }
+                }
+
+                // Clear the formatted URL string.
                 formattedUrlString = null;
 
-                // Clear `customHeaders`.
+                // Clear the custom headers.
                 customHeaders.clear();
 
-                // Destroy the internal state of `mainWebView`.
-                // TODO
-                currentWebView.destroy();
-
                 // Manually delete the `app_webview` folder, which contains the cookies, DOM storage, form data, and `Service Worker` cache.
                 // See `https://code.google.com/p/android/issues/detail?id=233826&thanks=233826&ts=1486670530`.
                 if (clearEverything) {
@@ -2416,8 +2403,13 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                 break;
 
             case R.id.requests:
-                // Launch the requests activity.
+                // Populate the resource requests.
+                RequestsActivity.resourceRequests = currentWebView.getResourceRequests();
+
+                // Create an intent to launch the Requests activity.
                 Intent requestsIntent = new Intent(this, RequestsActivity.class);
+
+                // Make it so.
                 startActivity(requestsIntent);
                 break;
 
@@ -2436,6 +2428,11 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                 reapplyDomainSettingsOnRestart = true;
                 currentDomainName = "";
 
+                // TODO.  Move these to `putExtra`.  The certificate can be stored as strings.
+                // Store the current SSL certificate and IP addresses in the domains activity.
+                DomainsActivity.currentSslCertificate = currentWebView.getCertificate();
+                DomainsActivity.currentIpAddresses = currentWebView.getCurrentIpAddresses();
+
                 // Launch the domains activity.
                 Intent domainsIntent = new Intent(this, DomainsActivity.class);
                 startActivity(domainsIntent);
@@ -3227,13 +3224,13 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
     }
 
     @Override
-    public void onPinnedMismatchBack() {
+    public void onPinnedMismatchBack() {  // TODO.  Move this logic to the dialog.
         if (currentWebView.canGoBack()) {  // There is a back page in the history.
             // Reset the formatted URL string so the page will load correctly if blocking of third-party requests is enabled.
-            formattedUrlString = "";
+            formattedUrlString = "";  // TODO.
 
             // Set `navigatingHistory` so that the domain settings are applied when the new URL is loaded.
-            navigatingHistory = true;
+            navigatingHistory = true;  // TODO.
 
             // Go back.
             currentWebView.goBack();
@@ -3244,9 +3241,9 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
     }
 
     @Override
-    public void onPinnedMismatchProceed() {
+    public void onPinnedMismatchProceed() {  // TODO.  Move this logic to the dialog.
         // Do not check the pinned information for this domain again until the domain changes.
-        ignorePinnedDomainInformation = true;
+        currentWebView.setIgnorePinnedDomainInformation(true);
     }
 
     @Override
@@ -3389,7 +3386,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
         formattedUrlString = url;
 
         // Apply the domain settings.
-        applyDomainSettings(url, true, false);
+        applyDomainSettings(currentWebView, url, true, false);
 
         // If loading a website, set `urlIsLoading` to prevent changes in the user agent on websites with redirects from reloading the current website.
         urlIsLoading = !url.equals("");
@@ -3458,8 +3455,23 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
             customHeaders.remove("DNT");
         }
 
-        // Set the app bar scrolling.
-        currentWebView.setNestedScrollingEnabled(sharedPreferences.getBoolean("scroll_app_bar", true));
+        // Set the app bar scrolling for each WebView.
+        for (int i = 0; i < webViewPagerAdapter.getCount(); i++) {
+            // Get the WebView tab fragment.
+            WebViewTabFragment webViewTabFragment = webViewPagerAdapter.getPageFragment(i);
+
+            // Get the fragment view.
+            View fragmentView = webViewTabFragment.getView();
+
+            // Only modify the WebViews if they exist.
+            if (fragmentView != null) {
+                // Get the nested scroll WebView from the tab fragment.
+                NestedScrollWebView nestedScrollWebView = fragmentView.findViewById(R.id.nestedscroll_webview);
+
+                // Set the app bar scrolling.
+                nestedScrollWebView.setNestedScrollingEnabled(sharedPreferences.getBoolean("scroll_app_bar", true));
+            }
+        }
 
         // Update the full screen browsing mode settings.
         if (fullScreenBrowsingModeEnabled && inFullScreenBrowsingMode) {  // Privacy Browser is currently in full screen browsing mode.
@@ -3496,7 +3508,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
             // Show the banner ad in the free flavor.
             if (BuildConfig.FLAVOR.contentEquals("free")) {
                 // Initialize the ads.  If this isn't the first run, `loadAd()` will be automatically called instead.
-                AdHelper.initializeAds(findViewById(R.id.adview), getApplicationContext(), fragmentManager, getString(R.string.google_app_id), getString(R.string.ad_unit_id));
+                AdHelper.initializeAds(findViewById(R.id.adview), getApplicationContext(), getSupportFragmentManager(), getString(R.string.google_app_id), getString(R.string.ad_unit_id));
             }
 
             // Remove the `SYSTEM_UI` flags from the root frame layout.
@@ -3511,12 +3523,12 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
     // `reloadWebsite` is used if returning from the Domains activity.  Otherwise JavaScript might not function correctly if it is newly enabled.
     // The deprecated `.getDrawable()` must be used until the minimum API >= 21.
     @SuppressWarnings("deprecation")
-    private boolean applyDomainSettings(String url, boolean resetFavoriteIcon, boolean reloadWebsite) {
+    private boolean applyDomainSettings(NestedScrollWebView nestedScrollWebView, String url, boolean resetFavoriteIcon, boolean reloadWebsite) {
         // Get a handle for the URL edit text.
         EditText urlEditText = findViewById(R.id.url_edittext);
 
         // Get the current user agent.
-        String initialUserAgent = currentWebView.getSettings().getUserAgentString();
+        String initialUserAgent = nestedScrollWebView.getSettings().getUserAgentString();
 
         // Initialize a variable to track if the user agent changes.
         boolean userAgentChanged = false;
@@ -3533,10 +3545,10 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
         // If either `hostName` or `currentDomainName` are `null`, run the options for loading a new domain name.
         // The lint suggestion to simplify the `if` statement is incorrect, because `hostName.equals(currentDomainName)` can produce a `null object reference.`
         //noinspection SimplifiableIfStatement
-        if ((hostName == null) || (currentDomainName == null)) {
+        if ((hostName == null) || (currentDomainName == null)) {  // TODO.
             loadingNewDomainName = true;
         } else {  // Determine if `hostName` equals `currentDomainName`.
-            loadingNewDomainName = !hostName.equals(currentDomainName);
+            loadingNewDomainName = !hostName.equals(currentDomainName);  // TODO.
         }
 
         // Strings don't like to be null.
@@ -3547,21 +3559,25 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
         // Only apply the domain settings if a new domain is being loaded.  This allows the user to set temporary settings for JavaScript, cookies, DOM storage, etc.
         if (loadingNewDomainName) {
             // Set the new `hostname` as the `currentDomainName`.
-            currentDomainName = hostName;
+            currentDomainName = hostName;  // TODO.
 
             // Reset the ignoring of pinned domain information.
-            ignorePinnedDomainInformation = false;
+            nestedScrollWebView.setIgnorePinnedDomainInformation(false);
+
+            // Clear any pinned SSL certificate or IP addresses.
+            nestedScrollWebView.clearPinnedSslCertificate();
+            nestedScrollWebView.clearPinnedIpAddresses();
 
             // Reset the favorite icon if specified.
             if (resetFavoriteIcon) {
                 // Store the favorite icon bitmap.
-                favoriteIconBitmap = favoriteIconDefaultBitmap;
+                favoriteIconBitmap = favoriteIconDefaultBitmap;  // TODO.
 
                 // Get a handle for the tab layout.
                 TabLayout tabLayout = findViewById(R.id.tablayout);
 
                 // Get the current tab.
-                TabLayout.Tab currentTab = tabLayout.getTabAt(tabLayout.getSelectedTabPosition());
+                TabLayout.Tab currentTab = tabLayout.getTabAt(tabLayout.getSelectedTabPosition());  // TODO.  We need to get the tab for this WebView, which might not be the current tab.
 
                 // Remove the warning below that the current tab might be null.
                 assert currentTab != null;
@@ -3615,17 +3631,17 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                 domainNameInDatabase = hostName;
 
                 // Set the domain settings applied tracker to true.
-                currentWebView.setDomainSettingsApplied(true);
+                nestedScrollWebView.setDomainSettingsApplied(true);
             } else {  // The hostname is not contained in the domain settings set.
                 // Set the domain settings applied tracker to false.
-                currentWebView.setDomainSettingsApplied(false);
+                nestedScrollWebView.setDomainSettingsApplied(false);
             }
 
             // Check all the subdomains of the host name against wildcard domains in the domain cursor.
-            while (!currentWebView.getDomainSettingsApplied() && hostName.contains(".")) {  // Stop checking if domain settings are already applied or there are no more `.` in the host name.
+            while (!nestedScrollWebView.getDomainSettingsApplied() && hostName.contains(".")) {  // Stop checking if domain settings are already applied or there are no more `.` in the host name.
                 if (domainSettingsSet.contains("*." + hostName)) {  // Check the host name prepended by `*.`.
                     // Set the domain settings applied tracker to true.
-                    currentWebView.setDomainSettingsApplied(true);
+                    nestedScrollWebView.setDomainSettingsApplied(true);
 
                     // Store the applied domain names as it appears in the database.
                     domainNameInDatabase = "*." + hostName;
@@ -3642,131 +3658,147 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
             // Store the general preference information.
             String defaultFontSizeString = sharedPreferences.getString("font_size", getString(R.string.font_size_default_value));
             String defaultUserAgentName = sharedPreferences.getString("user_agent", getString(R.string.user_agent_default_value));
-            defaultCustomUserAgentString = sharedPreferences.getString("custom_user_agent", getString(R.string.custom_user_agent_default_value));
+            defaultCustomUserAgentString = sharedPreferences.getString("custom_user_agent", getString(R.string.custom_user_agent_default_value));  // TODO.
             boolean defaultSwipeToRefresh = sharedPreferences.getBoolean("swipe_to_refresh", true);
-            nightMode = sharedPreferences.getBoolean("night_mode", false);
+            nightMode = sharedPreferences.getBoolean("night_mode", false);  // TODO.
             boolean displayWebpageImages = sharedPreferences.getBoolean("display_webpage_images", true);
 
-            if (currentWebView.getDomainSettingsApplied()) {  // The url has custom domain settings.
+            if (nestedScrollWebView.getDomainSettingsApplied()) {  // The url has custom domain settings.
                 // Get a cursor for the current host and move it to the first position.
                 Cursor currentHostDomainSettingsCursor = domainsDatabaseHelper.getCursorForDomainName(domainNameInDatabase);
                 currentHostDomainSettingsCursor.moveToFirst();
 
                 // Get the settings from the cursor.
-                currentWebView.setDomainSettingsDatabaseId(currentHostDomainSettingsCursor.getInt(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper._ID)));
-                javaScriptEnabled = (currentHostDomainSettingsCursor.getInt(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_JAVASCRIPT)) == 1);
-                firstPartyCookiesEnabled = (currentHostDomainSettingsCursor.getInt(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FIRST_PARTY_COOKIES)) == 1);
-                thirdPartyCookiesEnabled = (currentHostDomainSettingsCursor.getInt(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_THIRD_PARTY_COOKIES)) == 1);
-                domStorageEnabled = (currentHostDomainSettingsCursor.getInt(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_DOM_STORAGE)) == 1);
+                nestedScrollWebView.setDomainSettingsDatabaseId(currentHostDomainSettingsCursor.getInt(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper._ID)));
+                javaScriptEnabled = (currentHostDomainSettingsCursor.getInt(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_JAVASCRIPT)) == 1);  // TODO.
+                firstPartyCookiesEnabled = (currentHostDomainSettingsCursor.getInt(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FIRST_PARTY_COOKIES)) == 1);  // TODO.
+                thirdPartyCookiesEnabled = (currentHostDomainSettingsCursor.getInt(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_THIRD_PARTY_COOKIES)) == 1);  // TODO.
+                domStorageEnabled = (currentHostDomainSettingsCursor.getInt(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_DOM_STORAGE)) == 1);  // TODO.
                 // Form data can be removed once the minimum API >= 26.
-                saveFormDataEnabled = (currentHostDomainSettingsCursor.getInt(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FORM_DATA)) == 1);
-                easyListEnabled = (currentHostDomainSettingsCursor.getInt(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_EASYLIST)) == 1);
-                easyPrivacyEnabled = (currentHostDomainSettingsCursor.getInt(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_EASYPRIVACY)) == 1);
-                fanboysAnnoyanceListEnabled = (currentHostDomainSettingsCursor.getInt(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FANBOYS_ANNOYANCE_LIST)) == 1);
-                fanboysSocialBlockingListEnabled = (currentHostDomainSettingsCursor.getInt(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FANBOYS_SOCIAL_BLOCKING_LIST)) == 1);
-                ultraPrivacyEnabled = (currentHostDomainSettingsCursor.getInt(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_ULTRAPRIVACY)) == 1);
-                blockAllThirdPartyRequests = (currentHostDomainSettingsCursor.getInt(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.BLOCK_ALL_THIRD_PARTY_REQUESTS)) == 1);
+                saveFormDataEnabled = (currentHostDomainSettingsCursor.getInt(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FORM_DATA)) == 1);  // TODO.
+                easyListEnabled = (currentHostDomainSettingsCursor.getInt(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_EASYLIST)) == 1);  // TODO.
+                easyPrivacyEnabled = (currentHostDomainSettingsCursor.getInt(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_EASYPRIVACY)) == 1);  // TODO.
+                fanboysAnnoyanceListEnabled = (currentHostDomainSettingsCursor.getInt(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FANBOYS_ANNOYANCE_LIST)) == 1);  // TODO.
+                fanboysSocialBlockingListEnabled = (currentHostDomainSettingsCursor.getInt(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_FANBOYS_SOCIAL_BLOCKING_LIST)) == 1);  // TODO.
+                ultraPrivacyEnabled = (currentHostDomainSettingsCursor.getInt(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.ENABLE_ULTRAPRIVACY)) == 1);  // TODO.
+                blockAllThirdPartyRequests = (currentHostDomainSettingsCursor.getInt(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.BLOCK_ALL_THIRD_PARTY_REQUESTS)) == 1);  // TODO.
                 String userAgentName = currentHostDomainSettingsCursor.getString(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.USER_AGENT));
                 int fontSize = currentHostDomainSettingsCursor.getInt(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.FONT_SIZE));
                 int swipeToRefreshInt = currentHostDomainSettingsCursor.getInt(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.SWIPE_TO_REFRESH));
                 int nightModeInt = currentHostDomainSettingsCursor.getInt(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.NIGHT_MODE));
                 int displayWebpageImagesInt = currentHostDomainSettingsCursor.getInt(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.DISPLAY_IMAGES));
-                pinnedSslCertificate = (currentHostDomainSettingsCursor.getInt(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.PINNED_SSL_CERTIFICATE)) == 1);
-                pinnedSslIssuedToCName = currentHostDomainSettingsCursor.getString(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_TO_COMMON_NAME));
-                pinnedSslIssuedToOName = currentHostDomainSettingsCursor.getString(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATION));
-                pinnedSslIssuedToUName = currentHostDomainSettingsCursor.getString(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATIONAL_UNIT));
-                pinnedSslIssuedByCName = currentHostDomainSettingsCursor.getString(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_BY_COMMON_NAME));
-                pinnedSslIssuedByOName = currentHostDomainSettingsCursor.getString(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATION));
-                pinnedSslIssuedByUName = currentHostDomainSettingsCursor.getString(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATIONAL_UNIT));
-                pinnedIpAddresses = (currentHostDomainSettingsCursor.getInt(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.PINNED_IP_ADDRESSES)) == 1);
-                pinnedHostIpAddresses = currentHostDomainSettingsCursor.getString(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.IP_ADDRESSES));
+                boolean pinnedSslCertificate = (currentHostDomainSettingsCursor.getInt(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.PINNED_SSL_CERTIFICATE)) == 1);
+                String pinnedSslIssuedToCName = currentHostDomainSettingsCursor.getString(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_TO_COMMON_NAME));
+                String pinnedSslIssuedToOName = currentHostDomainSettingsCursor.getString(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATION));
+                String pinnedSslIssuedToUName = currentHostDomainSettingsCursor.getString(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_TO_ORGANIZATIONAL_UNIT));
+                String pinnedSslIssuedByCName = currentHostDomainSettingsCursor.getString(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_BY_COMMON_NAME));
+                String pinnedSslIssuedByOName = currentHostDomainSettingsCursor.getString(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATION));
+                String pinnedSslIssuedByUName = currentHostDomainSettingsCursor.getString(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_ISSUED_BY_ORGANIZATIONAL_UNIT));
+                boolean pinnedIpAddresses = (currentHostDomainSettingsCursor.getInt(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.PINNED_IP_ADDRESSES)) == 1);
+                String pinnedHostIpAddresses = currentHostDomainSettingsCursor.getString(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.IP_ADDRESSES));
+
+                // Create the pinned SSL date variables.
+                Date pinnedSslStartDate;
+                Date pinnedSslEndDate;
+
+                // Set the pinned SSL certificate start date to `null` if the saved date `long` is 0 because creating a new Date results in an error if the input is 0.
+                if (currentHostDomainSettingsCursor.getLong(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_START_DATE)) == 0) {
+                    pinnedSslStartDate = null;
+                } else {
+                    pinnedSslStartDate = new Date(currentHostDomainSettingsCursor.getLong(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_START_DATE)));
+                }
+
+                // Set the pinned SSL certificate end date to `null` if the saved date `long` is 0 because creating a new Date results in an error if the input is 0.
+                if (currentHostDomainSettingsCursor.getLong(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_END_DATE)) == 0) {
+                    pinnedSslEndDate = null;
+                } else {
+                    pinnedSslEndDate = new Date(currentHostDomainSettingsCursor.getLong(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_END_DATE)));
+                }
+
+                // If there is a pinned SSL certificate, store it in the WebView.
+                if (pinnedSslCertificate) {
+                    nestedScrollWebView.setPinnedSslCertificate(pinnedSslIssuedToCName, pinnedSslIssuedToOName, pinnedSslIssuedToUName, pinnedSslIssuedByCName, pinnedSslIssuedByOName, pinnedSslIssuedByUName,
+                            pinnedSslStartDate, pinnedSslEndDate);
+                }
+
+                // If there is a pinned IP address, store it in the WebView.
+                if (pinnedIpAddresses) {
+                    nestedScrollWebView.setPinnedIpAddresses(pinnedHostIpAddresses);
+                }
 
                 // Set `nightMode` according to `nightModeInt`.  If `nightModeInt` is `DomainsDatabaseHelper.NIGHT_MODE_SYSTEM_DEFAULT` the current setting from `sharedPreferences` will be used.
                 switch (nightModeInt) {
                     case DomainsDatabaseHelper.NIGHT_MODE_ENABLED:
-                        nightMode = true;
+                        nightMode = true;  // TODO.
                         break;
 
                     case DomainsDatabaseHelper.NIGHT_MODE_DISABLED:
-                        nightMode = false;
+                        nightMode = false;  // TODO.
                         break;
                 }
 
+                // TODO.
                 // Store the domain JavaScript status.  This is used by the options menu night mode toggle.
                 domainSettingsJavaScriptEnabled = javaScriptEnabled;
 
                 // Enable JavaScript if night mode is enabled.
                 if (nightMode) {
-                    javaScriptEnabled = true;
-                }
-
-                // Set the pinned SSL certificate start date to `null` if the saved date `long` is 0.
-                if (currentHostDomainSettingsCursor.getLong(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_START_DATE)) == 0) {
-                    pinnedSslStartDate = null;
-                } else {
-                    pinnedSslStartDate = new Date(currentHostDomainSettingsCursor.getLong(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_START_DATE)));
-                }
-
-                // Set the pinned SSL certificate end date to `null` if the saved date `long` is 0.
-                if (currentHostDomainSettingsCursor.getLong(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_END_DATE)) == 0) {
-                    pinnedSslEndDate = null;
-                } else {
-                    pinnedSslEndDate = new Date(currentHostDomainSettingsCursor.getLong(currentHostDomainSettingsCursor.getColumnIndex(DomainsDatabaseHelper.SSL_END_DATE)));
+                    javaScriptEnabled = true;  // TODO.
                 }
 
                 // Close `currentHostDomainSettingsCursor`.
                 currentHostDomainSettingsCursor.close();
 
                 // Apply the domain settings.
-                currentWebView.getSettings().setJavaScriptEnabled(javaScriptEnabled);
-                cookieManager.setAcceptCookie(firstPartyCookiesEnabled);
-                currentWebView.getSettings().setDomStorageEnabled(domStorageEnabled);
+                nestedScrollWebView.getSettings().setJavaScriptEnabled(javaScriptEnabled);  // TODO.
+                cookieManager.setAcceptCookie(firstPartyCookiesEnabled);  //TODO  This could be bad.
+                nestedScrollWebView.getSettings().setDomStorageEnabled(domStorageEnabled);  // TODO.
 
                 // Apply the form data setting if the API < 26.
                 if (Build.VERSION.SDK_INT < 26) {
-                    currentWebView.getSettings().setSaveFormData(saveFormDataEnabled);
+                    nestedScrollWebView.getSettings().setSaveFormData(saveFormDataEnabled);
                 }
 
                 // Apply the font size.
                 if (fontSize == 0) {  // Apply the default font size.
-                    currentWebView.getSettings().setTextZoom(Integer.valueOf(defaultFontSizeString));
+                    nestedScrollWebView.getSettings().setTextZoom(Integer.valueOf(defaultFontSizeString));
                 } else {  // Apply the specified font size.
-                    currentWebView.getSettings().setTextZoom(fontSize);
+                    nestedScrollWebView.getSettings().setTextZoom(fontSize);
                 }
 
                 // Set third-party cookies status if API >= 21.
                 if (Build.VERSION.SDK_INT >= 21) {
-                    cookieManager.setAcceptThirdPartyCookies(currentWebView, thirdPartyCookiesEnabled);
+                    cookieManager.setAcceptThirdPartyCookies(nestedScrollWebView, thirdPartyCookiesEnabled);  // TODO.
                 }
 
                 // Only set the user agent if the webpage is not currently loading.  Otherwise, changing the user agent on redirects can cause the original website to reload.
                 // <https://redmine.stoutner.com/issues/160>
-                if (!urlIsLoading) {
+                if (!urlIsLoading) {  // TODO.  We need to track this by WebView.
                     // Set the user agent.
                     if (userAgentName.equals(getString(R.string.system_default_user_agent))) {  // Use the system default user agent.
                         // Get the array position of the default user agent name.
-                        int defaultUserAgentArrayPosition = userAgentNamesArray.getPosition(defaultUserAgentName);
+                        int defaultUserAgentArrayPosition = userAgentNamesArray.getPosition(defaultUserAgentName);  // TODO Could this be local.
 
                         // Set the user agent according to the system default.
                         switch (defaultUserAgentArrayPosition) {
                             case UNRECOGNIZED_USER_AGENT:  // The default user agent name is not on the canonical list.
                                 // This is probably because it was set in an older version of Privacy Browser before the switch to persistent user agent names.
-                                currentWebView.getSettings().setUserAgentString(defaultUserAgentName);
+                                nestedScrollWebView.getSettings().setUserAgentString(defaultUserAgentName);
                                 break;
 
                             case SETTINGS_WEBVIEW_DEFAULT_USER_AGENT:
                                 // Set the user agent to `""`, which uses the default value.
-                                currentWebView.getSettings().setUserAgentString("");
+                                nestedScrollWebView.getSettings().setUserAgentString("");
                                 break;
 
                             case SETTINGS_CUSTOM_USER_AGENT:
                                 // Set the custom user agent.
-                                currentWebView.getSettings().setUserAgentString(defaultCustomUserAgentString);
+                                nestedScrollWebView.getSettings().setUserAgentString(defaultCustomUserAgentString);
                                 break;
 
                             default:
                                 // Get the user agent string from the user agent data array
-                                currentWebView.getSettings().setUserAgentString(userAgentDataArray[defaultUserAgentArrayPosition]);
+                                nestedScrollWebView.getSettings().setUserAgentString(userAgentDataArray[defaultUserAgentArrayPosition]);
                         }
                     } else {  // Set the user agent according to the stored name.
                         // Get the array position of the user agent name.
@@ -3774,29 +3806,29 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
 
                         switch (userAgentArrayPosition) {
                             case UNRECOGNIZED_USER_AGENT:  // The user agent name contains a custom user agent.
-                                currentWebView.getSettings().setUserAgentString(userAgentName);
+                                nestedScrollWebView.getSettings().setUserAgentString(userAgentName);
                                 break;
 
                             case SETTINGS_WEBVIEW_DEFAULT_USER_AGENT:
                                 // Set the user agent to `""`, which uses the default value.
-                                currentWebView.getSettings().setUserAgentString("");
+                                nestedScrollWebView.getSettings().setUserAgentString("");
                                 break;
 
                             default:
                                 // Get the user agent string from the user agent data array.
-                                currentWebView.getSettings().setUserAgentString(userAgentDataArray[userAgentArrayPosition]);
+                                nestedScrollWebView.getSettings().setUserAgentString(userAgentDataArray[userAgentArrayPosition]);
                         }
                     }
 
                     // Store the applied user agent string, which is used in the View Source activity.
-                    appliedUserAgentString = currentWebView.getSettings().getUserAgentString();
+                    appliedUserAgentString = nestedScrollWebView.getSettings().getUserAgentString();  // TODO.
 
                     // Update the user agent change tracker.
-                    userAgentChanged = !appliedUserAgentString.equals(initialUserAgent);
+                    userAgentChanged = !appliedUserAgentString.equals(initialUserAgent);  // TODO.
                 }
 
                 // Set swipe to refresh.
-                switch (swipeToRefreshInt) {
+                switch (swipeToRefreshInt) {  // TODO.  This needs to be set and updated by tab.
                     case DomainsDatabaseHelper.SWIPE_TO_REFRESH_SYSTEM_DEFAULT:
                         // Set swipe to refresh according to the default.
                         swipeRefreshLayout.setEnabled(defaultSwipeToRefresh);
@@ -3815,15 +3847,15 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                 // Set the loading of webpage images.
                 switch (displayWebpageImagesInt) {
                     case DomainsDatabaseHelper.DISPLAY_WEBPAGE_IMAGES_SYSTEM_DEFAULT:
-                        currentWebView.getSettings().setLoadsImagesAutomatically(displayWebpageImages);
+                        nestedScrollWebView.getSettings().setLoadsImagesAutomatically(displayWebpageImages);
                         break;
 
                     case DomainsDatabaseHelper.DISPLAY_WEBPAGE_IMAGES_ENABLED:
-                        currentWebView.getSettings().setLoadsImagesAutomatically(true);
+                        nestedScrollWebView.getSettings().setLoadsImagesAutomatically(true);
                         break;
 
                     case DomainsDatabaseHelper.DISPLAY_WEBPAGE_IMAGES_DISABLED:
-                        currentWebView.getSettings().setLoadsImagesAutomatically(false);
+                        nestedScrollWebView.getSettings().setLoadsImagesAutomatically(false);
                         break;
                 }
 
@@ -3835,28 +3867,28 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                 }
             } else {  // The new URL does not have custom domain settings.  Load the defaults.
                 // Store the values from `sharedPreferences` in variables.
-                javaScriptEnabled = sharedPreferences.getBoolean("javascript", false);
-                firstPartyCookiesEnabled = sharedPreferences.getBoolean("first_party_cookies", false);
-                thirdPartyCookiesEnabled = sharedPreferences.getBoolean("third_party_cookies", false);
-                domStorageEnabled = sharedPreferences.getBoolean("dom_storage", false);
-                saveFormDataEnabled = sharedPreferences.getBoolean("save_form_data", false);  // Form data can be removed once the minimum API >= 26.
-                easyListEnabled = sharedPreferences.getBoolean("easylist", true);
-                easyPrivacyEnabled = sharedPreferences.getBoolean("easyprivacy", true);
-                fanboysAnnoyanceListEnabled = sharedPreferences.getBoolean("fanboys_annoyance_list", true);
-                fanboysSocialBlockingListEnabled = sharedPreferences.getBoolean("fanboys_social_blocking_list", true);
-                ultraPrivacyEnabled = sharedPreferences.getBoolean("ultraprivacy", true);
-                blockAllThirdPartyRequests = sharedPreferences.getBoolean("block_all_third_party_requests", false);
+                javaScriptEnabled = sharedPreferences.getBoolean("javascript", false);  // TODO.
+                firstPartyCookiesEnabled = sharedPreferences.getBoolean("first_party_cookies", false);  // TODO.
+                thirdPartyCookiesEnabled = sharedPreferences.getBoolean("third_party_cookies", false);  // TODO.
+                domStorageEnabled = sharedPreferences.getBoolean("dom_storage", false);  // TODO.
+                saveFormDataEnabled = sharedPreferences.getBoolean("save_form_data", false);  // Form data can be removed once the minimum API >= 26.  // TODO.
+                easyListEnabled = sharedPreferences.getBoolean("easylist", true);  // TODO.
+                easyPrivacyEnabled = sharedPreferences.getBoolean("easyprivacy", true);  // TODO.
+                fanboysAnnoyanceListEnabled = sharedPreferences.getBoolean("fanboys_annoyance_list", true);  // TODO.
+                fanboysSocialBlockingListEnabled = sharedPreferences.getBoolean("fanboys_social_blocking_list", true);  // TODO.
+                ultraPrivacyEnabled = sharedPreferences.getBoolean("ultraprivacy", true);  // TODO.
+                blockAllThirdPartyRequests = sharedPreferences.getBoolean("block_all_third_party_requests", false);  // TODO.
 
                 // Set `javaScriptEnabled` to be `true` if `night_mode` is `true`.
                 if (nightMode) {
-                    javaScriptEnabled = true;
+                    javaScriptEnabled = true;  // TODO.
                 }
 
                 // Apply the default settings.
-                currentWebView.getSettings().setJavaScriptEnabled(javaScriptEnabled);
-                cookieManager.setAcceptCookie(firstPartyCookiesEnabled);
-                currentWebView.getSettings().setDomStorageEnabled(domStorageEnabled);
-                currentWebView.getSettings().setTextZoom(Integer.valueOf(defaultFontSizeString));
+                nestedScrollWebView.getSettings().setJavaScriptEnabled(javaScriptEnabled);  // TODO.
+                cookieManager.setAcceptCookie(firstPartyCookiesEnabled);  // TODO.
+                nestedScrollWebView.getSettings().setDomStorageEnabled(domStorageEnabled);  // TODO.
+                nestedScrollWebView.getSettings().setTextZoom(Integer.valueOf(defaultFontSizeString));
                 swipeRefreshLayout.setEnabled(defaultSwipeToRefresh);
 
                 // Apply the form data setting if the API < 26.
@@ -3865,27 +3897,16 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                 }
 
                 // Reset the pinned variables.
-                currentWebView.setDomainSettingsDatabaseId(-1);
-                pinnedSslCertificate = false;
-                pinnedSslIssuedToCName = "";
-                pinnedSslIssuedToOName = "";
-                pinnedSslIssuedToUName = "";
-                pinnedSslIssuedByCName = "";
-                pinnedSslIssuedByOName = "";
-                pinnedSslIssuedByUName = "";
-                pinnedSslStartDate = null;
-                pinnedSslEndDate = null;
-                pinnedIpAddresses = false;
-                pinnedHostIpAddresses = "";
+                nestedScrollWebView.setDomainSettingsDatabaseId(-1);
 
                 // Set third-party cookies status if API >= 21.
                 if (Build.VERSION.SDK_INT >= 21) {
-                    cookieManager.setAcceptThirdPartyCookies(currentWebView, thirdPartyCookiesEnabled);
+                    cookieManager.setAcceptThirdPartyCookies(nestedScrollWebView, thirdPartyCookiesEnabled);
                 }
 
                 // Only set the user agent if the webpage is not currently loading.  Otherwise, changing the user agent on redirects can cause the original website to reload.
                 // <https://redmine.stoutner.com/issues/160>
-                if (!urlIsLoading) {
+                if (!urlIsLoading) {  // TODO.
                     // Get the array position of the user agent name.
                     int userAgentArrayPosition = userAgentNamesArray.getPosition(defaultUserAgentName);
 
@@ -3893,33 +3914,33 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                     switch (userAgentArrayPosition) {
                         case UNRECOGNIZED_USER_AGENT:  // The default user agent name is not on the canonical list.
                             // This is probably because it was set in an older version of Privacy Browser before the switch to persistent user agent names.
-                            currentWebView.getSettings().setUserAgentString(defaultUserAgentName);
+                            nestedScrollWebView.getSettings().setUserAgentString(defaultUserAgentName);
                             break;
 
                         case SETTINGS_WEBVIEW_DEFAULT_USER_AGENT:
                             // Set the user agent to `""`, which uses the default value.
-                            currentWebView.getSettings().setUserAgentString("");
+                            nestedScrollWebView.getSettings().setUserAgentString("");
                             break;
 
                         case SETTINGS_CUSTOM_USER_AGENT:
                             // Set the custom user agent.
-                            currentWebView.getSettings().setUserAgentString(defaultCustomUserAgentString);
+                            nestedScrollWebView.getSettings().setUserAgentString(defaultCustomUserAgentString);  // TODO.
                             break;
 
                         default:
                             // Get the user agent string from the user agent data array
-                            currentWebView.getSettings().setUserAgentString(userAgentDataArray[userAgentArrayPosition]);
+                            nestedScrollWebView.getSettings().setUserAgentString(userAgentDataArray[userAgentArrayPosition]);
                     }
 
                     // Store the applied user agent string, which is used in the View Source activity.
-                    appliedUserAgentString = currentWebView.getSettings().getUserAgentString();
+                    appliedUserAgentString = nestedScrollWebView.getSettings().getUserAgentString();  // TODO.
 
                     // Update the user agent change tracker.
-                    userAgentChanged = !appliedUserAgentString.equals(initialUserAgent);
+                    userAgentChanged = !appliedUserAgentString.equals(initialUserAgent);  // TODO.
                 }
 
                 // Set the loading of webpage images.
-                currentWebView.getSettings().setLoadsImagesAutomatically(displayWebpageImages);
+                nestedScrollWebView.getSettings().setLoadsImagesAutomatically(displayWebpageImages);
 
                 // Set a transparent background on URL edit text.  The deprecated `.getDrawable()` must be used until the minimum API >= 21.
                 urlEditText.setBackgroundDrawable(getResources().getDrawable(R.color.transparent));
@@ -3928,15 +3949,15 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
             // Close the domains database helper.
             domainsDatabaseHelper.close();
 
-            // Update the privacy icons, but only if `mainMenu` has already been populated.
-            if (mainMenu != null) {
+            // Update the privacy icons, but only if the options menu has already been populated.
+            if (mainMenu != null) {  // TODO.  Consider renaming this to optionsMenu.
                 updatePrivacyIcons(true);
             }
         }
 
         // Reload the website if returning from the Domains activity.
         if (reloadWebsite) {
-            currentWebView.reload();
+            nestedScrollWebView.reload();
         }
 
         // Return the user agent changed status.
@@ -4031,9 +4052,25 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
             // Reset `waitingForOrbot.
             waitingForOrbot = false;
 
-            // Reload the website if requested.
+            // Reload the WebViews if requested.
             if (reloadWebsite) {
-                currentWebView.reload();
+                // Reload the WebViews.
+                for (int i = 0; i < webViewPagerAdapter.getCount(); i++) {
+                    // Get the WebView tab fragment.
+                    WebViewTabFragment webViewTabFragment = webViewPagerAdapter.getPageFragment(i);
+
+                    // Get the fragment view.
+                    View fragmentView = webViewTabFragment.getView();
+
+                    // Only reload the WebViews if they exist.
+                    if (fragmentView != null) {
+                        // Get the nested scroll WebView from the tab fragment.
+                        NestedScrollWebView nestedScrollWebView = fragmentView.findViewById(R.id.nestedscroll_webview);
+
+                        // Reload the WebView.
+                        nestedScrollWebView.reload();
+                    }
+                }
             }
         }
     }
@@ -4252,210 +4289,50 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
         startActivity(openWithBrowserIntent);
     }
 
-    public static void checkPinnedMismatch(int domainSettingsDatabaseId) {
-        if ((pinnedSslCertificate || pinnedIpAddresses) && !ignorePinnedDomainInformation) {
-            // Initialize the current SSL certificate variables.
-            String currentWebsiteIssuedToCName = "";
-            String currentWebsiteIssuedToOName = "";
-            String currentWebsiteIssuedToUName = "";
-            String currentWebsiteIssuedByCName = "";
-            String currentWebsiteIssuedByOName = "";
-            String currentWebsiteIssuedByUName = "";
-            Date currentWebsiteSslStartDate = null;
-            Date currentWebsiteSslEndDate = null;
-
-
-            // Extract the individual pieces of information from the current website SSL certificate if it is not null.
-            if (sslCertificate != null) {
-                currentWebsiteIssuedToCName = sslCertificate.getIssuedTo().getCName();
-                currentWebsiteIssuedToOName = sslCertificate.getIssuedTo().getOName();
-                currentWebsiteIssuedToUName = sslCertificate.getIssuedTo().getUName();
-                currentWebsiteIssuedByCName = sslCertificate.getIssuedBy().getCName();
-                currentWebsiteIssuedByOName = sslCertificate.getIssuedBy().getOName();
-                currentWebsiteIssuedByUName = sslCertificate.getIssuedBy().getUName();
-                currentWebsiteSslStartDate = sslCertificate.getValidNotBeforeDate();
-                currentWebsiteSslEndDate = sslCertificate.getValidNotAfterDate();
-            }
-
-            // Initialize string variables to store the SSL certificate dates.  Strings are needed to compare the values below, which doesn't work with `Dates` if they are `null`.
-            String currentWebsiteSslStartDateString = "";
-            String currentWebsiteSslEndDateString = "";
-            String pinnedSslStartDateString = "";
-            String pinnedSslEndDateString = "";
-
-            // Convert the `Dates` to `Strings` if they are not `null`.
-            if (currentWebsiteSslStartDate != null) {
-                currentWebsiteSslStartDateString = currentWebsiteSslStartDate.toString();
-            }
-
-            if (currentWebsiteSslEndDate != null) {
-                currentWebsiteSslEndDateString = currentWebsiteSslEndDate.toString();
-            }
-
-            if (pinnedSslStartDate != null) {
-                pinnedSslStartDateString = pinnedSslStartDate.toString();
-            }
-
-            if (pinnedSslEndDate != null) {
-                pinnedSslEndDateString = pinnedSslEndDate.toString();
-            }
-
-            // Check to see if the pinned information matches the current information.
-            if ((pinnedIpAddresses && !currentHostIpAddresses.equals(pinnedHostIpAddresses)) || (pinnedSslCertificate && (!currentWebsiteIssuedToCName.equals(pinnedSslIssuedToCName) ||
-                    !currentWebsiteIssuedToOName.equals(pinnedSslIssuedToOName) || !currentWebsiteIssuedToUName.equals(pinnedSslIssuedToUName) ||
-                    !currentWebsiteIssuedByCName.equals(pinnedSslIssuedByCName) || !currentWebsiteIssuedByOName.equals(pinnedSslIssuedByOName) ||
-                    !currentWebsiteIssuedByUName.equals(pinnedSslIssuedByUName) || !currentWebsiteSslStartDateString.equals(pinnedSslStartDateString) ||
-                    !currentWebsiteSslEndDateString.equals(pinnedSslEndDateString)))) {
-
-                // Get a handle for the pinned mismatch alert dialog.
-                DialogFragment pinnedMismatchDialogFragment = PinnedMismatchDialog.displayDialog(domainSettingsDatabaseId, pinnedSslCertificate, pinnedIpAddresses);
-
-                // Show the pinned mismatch alert dialog.
-                pinnedMismatchDialogFragment.show(fragmentManager, "Pinned Mismatch");
-            }
-        }
-    }
-
-    private class WebViewPagerAdapter extends FragmentPagerAdapter {
-        // The WebView fragments list contains all the WebViews.
-        private LinkedList<WebViewTabFragment> webViewFragmentsList = new LinkedList<>();
-
-        // Define the constructor.
-        private WebViewPagerAdapter(FragmentManager fragmentManager){
-            // Run the default commands.
-            super(fragmentManager);
-        }
-
-        @Override
-        public int getCount() {
-            // Return the number of pages.
-            return webViewFragmentsList.size();
-        }
-
-        @Override
-        public int getItemPosition(@NonNull Object object) {
-            //noinspection SuspiciousMethodCalls
-            if (webViewFragmentsList.contains(object)) {
-                // The tab has not been deleted.
-                return POSITION_UNCHANGED;
-            } else {
-                // The tab has been deleted.
-                return POSITION_NONE;
-            }
-        }
-
-        @Override
-        public Fragment getItem(int pageNumber) {
-            // Get a WebView for a particular page.  Page numbers are 0 indexed.
-            return webViewFragmentsList.get(pageNumber);
-        }
-
-        private void addPage() {
-            // Add a new page.  The pages and tabs are 0 indexed, so the size of the current list equals the number of the next page.
-            webViewFragmentsList.add(WebViewTabFragment.createTab(webViewFragmentsList.size()));
-
-            // Update the view pager.
-            notifyDataSetChanged();
-        }
-
-        private void deletePage(int pageNumber) {
-            // Get a handle for the tab layout.
-            TabLayout tabLayout = findViewById(R.id.tablayout);
-
-            // TODO always move to the next tab if possible.
-            // Select a tab that is not being deleted.
-            if (pageNumber == 0) {  // The first tab is being deleted.
-                // Get a handle for the second tab.  The tabs are 0 indexed.
-                TabLayout.Tab secondTab = tabLayout.getTabAt(1);
-
-                // Remove the incorrect lint warning below that the second tab might be null.
-                assert secondTab != null;
-
-                // Select the second tab.
-                secondTab.select();
-            } else {  // The first tab is not being deleted.
-                // Get a handle for the previous tab.
-                TabLayout.Tab previousTab = tabLayout.getTabAt(pageNumber - 1);
+    public void addTab(View view) {
+        // Get a handle for the tab layout.
+        TabLayout tabLayout = findViewById(R.id.tablayout);
 
-                // Remove the incorrect lint warning below tha the previous tab might be null.
-                assert previousTab != null;
+        // Get the new page number.  The page numbers are 0 indexed, so the new page number will match the current count.
+        int newTabNumber = tabLayout.getTabCount();
 
-                // Select the previous tab.
-                previousTab.select();
-            }
+        // Add a new tab.
+        tabLayout.addTab(tabLayout.newTab());
 
-            // Delete the page.
-            webViewFragmentsList.remove(pageNumber);
+        // Get the new tab.
+        TabLayout.Tab newTab = tabLayout.getTabAt(newTabNumber);
 
-            // Delete the tab.
-            tabLayout.removeTabAt(pageNumber);
+        // Remove the lint warning below that the current tab might be null.
+        assert newTab != null;
 
-            // Update the view pager.
-            notifyDataSetChanged();
-        }
-    }
+        // Set a custom view on the current tab.
+        newTab.setCustomView(R.layout.custom_tab_view);
 
-    public void addTab(View view) {
         // Add the new WebView page.
-        webViewPagerAdapter.addPage();
+        webViewPagerAdapter.addPage(newTabNumber);
 
-        // Get a handle for the tab layout.
-        TabLayout tabLayout = findViewById(R.id.tablayout);
-
-        // Get a handle for the new tab.  The tabs are 0 indexed.
-        TabLayout.Tab newTab = tabLayout.getTabAt(tabLayout.getTabCount() - 1);
-
-        // Remove the incorrect warning below that the new tab might be null.
-        assert newTab != null;
-
-        // Move the tab layout to the new tab.
-        newTab.select();
+        if (newTabNumber > 0) {
+            // Move to the new tab.
+            newTab.select();
+        }
     }
 
     @Override
-    public void initializeWebView(int tabNumber, ProgressBar progressBar, NestedScrollWebView nestedScrollWebView) {
+    public void initializeWebView(NestedScrollWebView nestedScrollWebView, int pageNumber, ProgressBar progressBar) {
         // Get handles for the activity views.
-        final FrameLayout rootFrameLayout = findViewById(R.id.root_framelayout);
-        final DrawerLayout drawerLayout = findViewById(R.id.drawerlayout);
-        final RelativeLayout mainContentRelativeLayout = findViewById(R.id.main_content_relativelayout);
-        final ActionBar actionBar = getSupportActionBar();
+        FrameLayout rootFrameLayout = findViewById(R.id.root_framelayout);
+        DrawerLayout drawerLayout = findViewById(R.id.drawerlayout);
+        RelativeLayout mainContentRelativeLayout = findViewById(R.id.main_content_relativelayout);
+        ActionBar actionBar = getSupportActionBar();
         EditText urlEditText = findViewById(R.id.url_edittext);
-        final TabLayout tabLayout = findViewById(R.id.tablayout);
-        final SwipeRefreshLayout swipeRefreshLayout = findViewById(R.id.swiperefreshlayout);
+        TabLayout tabLayout = findViewById(R.id.tablayout);
+        SwipeRefreshLayout swipeRefreshLayout = findViewById(R.id.swiperefreshlayout);
 
         // Remove the incorrect lint warnings below that the some of the views might be null.
         assert actionBar != null;
 
-        // TODO.  Still doesn't work right.
-        // Create the tab if it doesn't already exist.
-        try {
-            TabLayout.Tab tab = tabLayout.getTabAt(tabNumber);
-
-            assert tab != null;
-
-            tab.getCustomView();
-        } catch (Exception exception) {
-            tabLayout.addTab(tabLayout.newTab());
-        }
-
-        // Get the current tab.
-        TabLayout.Tab currentTab = tabLayout.getTabAt(tabNumber);
-
-        // Remove the lint warning below that the current tab might be null.
-        assert currentTab != null;
-
-        // Set a custom view on the current tab.
-        currentTab.setCustomView(R.layout.custom_tab_view);
-
-        // Get the custom view from the tab.
-        View currentTabView = currentTab.getCustomView();
-
-        // Remove the incorrect warning below that the current tab view might be null.
-        assert currentTabView != null;
-
-        // Get the current views from the tab.
-        ImageView tabFavoriteIconImageView = currentTabView.findViewById(R.id.favorite_icon_imageview);
-        TextView tabTitleTextView = currentTabView.findViewById(R.id.title_textview);
+        // Get a handle for the activity
+        Activity activity = this;
 
         // Get a handle for the shared preferences.
         SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
@@ -4463,6 +4340,9 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
         // Get the relevant preferences.
         boolean downloadWithExternalApp = sharedPreferences.getBoolean("download_with_external_app", false);
 
+        // Set the app bar scrolling.
+        nestedScrollWebView.setNestedScrollingEnabled(sharedPreferences.getBoolean("scroll_app_bar", true));
+
         // Allow pinch to zoom.
         nestedScrollWebView.getSettings().setBuiltInZoomControls(true);
 
@@ -4578,22 +4458,22 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                     downloadContentLength = contentLength;
 
                     // Show a dialog if the user has previously denied the permission.
-                    if (ActivityCompat.shouldShowRequestPermissionRationale(activity, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {  // Show a dialog explaining the request first.
+                    if (ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {  // Show a dialog explaining the request first.
                         // Instantiate the download location permission alert dialog and set the download type to DOWNLOAD_FILE.
                         DialogFragment downloadLocationPermissionDialogFragment = DownloadLocationPermissionDialog.downloadType(DownloadLocationPermissionDialog.DOWNLOAD_FILE);
 
                         // Show the download location permission alert dialog.  The permission will be requested when the the dialog is closed.
-                        downloadLocationPermissionDialogFragment.show(fragmentManager, getString(R.string.download_location));
+                        downloadLocationPermissionDialogFragment.show(getSupportFragmentManager(), getString(R.string.download_location));
                     } else {  // Show the permission request directly.
                         // Request the permission.  The download dialog will be launched by `onRequestPermissionResult()`.
-                        ActivityCompat.requestPermissions(activity, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, DOWNLOAD_FILE_REQUEST_CODE);
+                        ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, DOWNLOAD_FILE_REQUEST_CODE);
                     }
                 } else {  // The storage permission has already been granted.
                     // Get a handle for the download file alert dialog.
                     DialogFragment downloadFileDialogFragment = DownloadFileDialog.fromUrl(url, contentDisposition, contentLength);
 
                     // Show the download file alert dialog.
-                    downloadFileDialogFragment.show(fragmentManager, getString(R.string.download));
+                    downloadFileDialogFragment.show(getSupportFragmentManager(), getString(R.string.download));
                 }
             }
         });
@@ -4680,9 +4560,27 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                 // Only update the favorite icon if the website has finished loading.
                 if (progressBar.getVisibility() == View.GONE) {
                     // Save a copy of the favorite icon.
-                    // TODO.  We need to save and access the icons for each tab.
                     favoriteIconBitmap = icon;
 
+                    // Get the current page position.
+                    int currentPosition = webViewPagerAdapter.getPositionForId(nestedScrollWebView.getWebViewFragmentId());
+
+                    // Get the current tab.
+                    TabLayout.Tab tab = tabLayout.getTabAt(currentPosition);
+
+                    // Remove the lint warning below that the current tab might be null.
+                    assert tab != null;
+
+                    // Get the custom view from the tab.
+                    View tabView = tab.getCustomView();
+
+                    // Remove the incorrect warning below that the current tab view might be null.
+                    assert tabView != null;
+
+                    // Get the favorite icon image view from the tab.
+                    ImageView tabFavoriteIconImageView = tabView.findViewById(R.id.favorite_icon_imageview);
+
+                    // Display the favorite icon in the tab.
                     tabFavoriteIconImageView.setImageBitmap(Bitmap.createScaledBitmap(icon, 64, 64, true));
                 }
             }
@@ -4690,12 +4588,26 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
             // Save a copy of the title when it changes.
             @Override
             public void onReceivedTitle(WebView view, String title) {
-                // Save a copy of the title.
-                // TODO.  Replace `webViewTitle` with `currentWebView.getTitle()`.
-                webViewTitle = title;
+                // Get the current page position.
+                int currentPosition = webViewPagerAdapter.getPositionForId(nestedScrollWebView.getWebViewFragmentId());
+
+                // Get the current tab.
+                TabLayout.Tab tab = tabLayout.getTabAt(currentPosition);
+
+                // Remove the lint warning below that the current tab might be null.
+                assert tab != null;
+
+                // Get the custom view from the tab.
+                View tabView = tab.getCustomView();
+
+                // Remove the incorrect warning below that the current tab view might be null.
+                assert tabView != null;
+
+                // Get the title text view from the tab.
+                TextView tabTitleTextView = tabView.findViewById(R.id.title_textview);
 
                 // Set the title as the tab text.
-                tabTitleTextView.setText(webViewTitle);
+                tabTitleTextView.setText(title);
             }
 
             // Enter full screen video.
@@ -4826,7 +4738,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                     formattedUrlString = "";
 
                     // Apply the domain settings for the new URL.  `applyDomainSettings` doesn't do anything if the domain has not changed.
-                    boolean userAgentChanged = applyDomainSettings(url, true, false);
+                    boolean userAgentChanged = applyDomainSettings(nestedScrollWebView, url, true, false);
 
                     // Check if the user agent has changed.
                     if (userAgentChanged) {
@@ -4902,7 +4814,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                 WebResourceResponse emptyWebResourceResponse = new WebResourceResponse("text/plain", "utf8", new ByteArrayInputStream("".getBytes()));
 
                 // Reset the whitelist results tracker.
-                whiteListResultStringArray = null;
+                String[] whitelistResultStringArray = null;
 
                 // Initialize the third party request tracker.
                 boolean isThirdPartyRequest = false;
@@ -4942,21 +4854,32 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                     }
                 }
 
+                // Get the current WebView page position.
+                int webViewPagePosition = webViewPagerAdapter.getPositionForId(nestedScrollWebView.getWebViewFragmentId());
+
+                // Determine if the WebView is currently displayed.
+                boolean webViewDisplayed = (webViewPagePosition == tabLayout.getSelectedTabPosition());
+
                 // Block third-party requests if enabled.
                 if (isThirdPartyRequest && blockAllThirdPartyRequests) {
+                    // Add the result to the resource requests.
+                    nestedScrollWebView.addResourceRequest(new String[]{BlockListHelper.REQUEST_THIRD_PARTY, url});
+
                     // Increment the blocked requests counters.
-                    blockedRequests++;
-                    thirdPartyBlockedRequests++;
-
-                    // Update the titles of the blocklist menu items.  This must be run from the UI thread.
-                    activity.runOnUiThread(() -> {
-                        navigationRequestsMenuItem.setTitle(getString(R.string.requests) + " - " + blockedRequests);
-                        blocklistsMenuItem.setTitle(getString(R.string.requests) + " - " + blockedRequests);
-                        blockAllThirdPartyRequestsMenuItem.setTitle(thirdPartyBlockedRequests + " - " + getString(R.string.block_all_third_party_requests));
-                    });
+                    nestedScrollWebView.incrementRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS);
+                    nestedScrollWebView.incrementRequestsCount(NestedScrollWebView.THIRD_PARTY_BLOCKED_REQUESTS);
 
-                    // Add the request to the log.
-                    resourceRequests.add(new String[]{String.valueOf(REQUEST_THIRD_PARTY), url});
+                    // Update the titles of the blocklist menu items if the WebView is currently displayed.
+                    if (webViewDisplayed) {
+                        // Updating the UI must be run from the UI thread.
+                        activity.runOnUiThread(() -> {
+                            // Update the menu item titles.
+                            navigationRequestsMenuItem.setTitle(getString(R.string.requests) + " - " + nestedScrollWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
+                            blocklistsMenuItem.setTitle(getString(R.string.blocklists) + " - " + nestedScrollWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
+                            blockAllThirdPartyRequestsMenuItem.setTitle(nestedScrollWebView.getRequestsCount(NestedScrollWebView.THIRD_PARTY_BLOCKED_REQUESTS) + " - " +
+                                    getString(R.string.block_all_third_party_requests));
+                        });
+                    }
 
                     // Return an empty web resource response.
                     return emptyWebResourceResponse;
@@ -4964,26 +4887,36 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
 
                 // Check UltraPrivacy if it is enabled.
                 if (ultraPrivacyEnabled) {
-                    if (blockListHelper.isBlocked(currentDomain, url, isThirdPartyRequest, ultraPrivacy)) {
-                        // Increment the blocked requests counters.
-                        blockedRequests++;
-                        ultraPrivacyBlockedRequests++;
+                    // Check the URL against UltraPrivacy.
+                    String[] ultraPrivacyResults = blockListHelper.checkBlocklist(currentDomain, url, isThirdPartyRequest, ultraPrivacy);
 
-                        // Update the titles of the blocklist menu items.  This must be run from the UI thread.
-                        activity.runOnUiThread(() -> {
-                            navigationRequestsMenuItem.setTitle(getString(R.string.requests) + " - " + blockedRequests);
-                            blocklistsMenuItem.setTitle(getString(R.string.requests) + " - " + blockedRequests);
-                            ultraPrivacyMenuItem.setTitle(ultraPrivacyBlockedRequests + " - " + getString(R.string.ultraprivacy));
-                        });
+                    // Process the UltraPrivacy results.
+                    if (ultraPrivacyResults[0].equals(BlockListHelper.REQUEST_BLOCKED)) {  // The resource request matched UltraPrivacy's blacklist.
+                        // Add the result to the resource requests.
+                        nestedScrollWebView.addResourceRequest(new String[] {ultraPrivacyResults[0], ultraPrivacyResults[1], ultraPrivacyResults[2], ultraPrivacyResults[3], ultraPrivacyResults[4],
+                                ultraPrivacyResults[5]});
+
+                        // Increment the blocked requests counters.
+                        nestedScrollWebView.incrementRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS);
+                        nestedScrollWebView.incrementRequestsCount(NestedScrollWebView.ULTRA_PRIVACY_BLOCKED_REQUESTS);
+
+                        // Update the titles of the blocklist menu items if the WebView is currently displayed.
+                        if (webViewDisplayed) {
+                            // Updating the UI must be run from the UI thread.
+                            activity.runOnUiThread(() -> {
+                                // Update the menu item titles.
+                                navigationRequestsMenuItem.setTitle(getString(R.string.requests) + " - " + nestedScrollWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
+                                blocklistsMenuItem.setTitle(getString(R.string.blocklists) + " - " + nestedScrollWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
+                                ultraPrivacyMenuItem.setTitle(nestedScrollWebView.getRequestsCount(NestedScrollWebView.ULTRA_PRIVACY_BLOCKED_REQUESTS) + " - " + getString(R.string.ultraprivacy));
+                            });
+                        }
 
                         // The resource request was blocked.  Return an empty web resource response.
                         return emptyWebResourceResponse;
-                    }
-
-                    // If the whitelist result is not null, the request has been allowed by UltraPrivacy.
-                    if (whiteListResultStringArray != null) {
+                    } else if (ultraPrivacyResults[0].equals(BlockListHelper.REQUEST_ALLOWED)) {  // The resource request matched UltraPrivacy's whitelist.
                         // Add a whitelist entry to the resource requests array.
-                        resourceRequests.add(whiteListResultStringArray);
+                        nestedScrollWebView.addResourceRequest(new String[] {ultraPrivacyResults[0], ultraPrivacyResults[1], ultraPrivacyResults[2], ultraPrivacyResults[3], ultraPrivacyResults[4],
+                                ultraPrivacyResults[5]});
 
                         // The resource request has been allowed by UltraPrivacy.  `return null` loads the requested resource.
                         return null;
@@ -4992,94 +4925,145 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
 
                 // Check EasyList if it is enabled.
                 if (easyListEnabled) {
-                    if (blockListHelper.isBlocked(currentDomain, url, isThirdPartyRequest, easyList)) {
-                        // Increment the blocked requests counters.
-                        blockedRequests++;
-                        easyListBlockedRequests++;
+                    // Check the URL against EasyList.
+                    String[] easyListResults = blockListHelper.checkBlocklist(currentDomain, url, isThirdPartyRequest, easyList);
 
-                        // Update the titles of the blocklist menu items.  This must be run from the UI thread.
-                        activity.runOnUiThread(() -> {
-                            navigationRequestsMenuItem.setTitle(getString(R.string.requests) + " - " + blockedRequests);
-                            blocklistsMenuItem.setTitle(getString(R.string.requests) + " - " + blockedRequests);
-                            easyListMenuItem.setTitle(easyListBlockedRequests + " - " + getString(R.string.easylist));
-                        });
+                    // Process the EasyList results.
+                    if (easyListResults[0].equals(BlockListHelper.REQUEST_BLOCKED)) {  // The resource request matched EasyList's blacklist.
+                        // Add the result to the resource requests.
+                        nestedScrollWebView.addResourceRequest(new String[] {easyListResults[0], easyListResults[1], easyListResults[2], easyListResults[3], easyListResults[4], easyListResults[5]});
 
-                        // Reset the whitelist results tracker (because otherwise it will sometimes add results to the list due to a race condition).
-                        whiteListResultStringArray = null;
+                        // Increment the blocked requests counters.
+                        nestedScrollWebView.incrementRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS);
+                        nestedScrollWebView.incrementRequestsCount(NestedScrollWebView.EASY_LIST_BLOCKED_REQUESTS);
+
+                        // Update the titles of the blocklist menu items if the WebView is currently displayed.
+                        if (webViewDisplayed) {
+                            // Updating the UI must be run from the UI thread.
+                            activity.runOnUiThread(() -> {
+                                // Update the menu item titles.
+                                navigationRequestsMenuItem.setTitle(getString(R.string.requests) + " - " + nestedScrollWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
+                                blocklistsMenuItem.setTitle(getString(R.string.blocklists) + " - " + nestedScrollWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
+                                easyListMenuItem.setTitle(nestedScrollWebView.getRequestsCount(NestedScrollWebView.EASY_LIST_BLOCKED_REQUESTS) + " - " + getString(R.string.easylist));
+                            });
+                        }
 
                         // The resource request was blocked.  Return an empty web resource response.
                         return emptyWebResourceResponse;
+                    } else if (easyListResults[0].equals(BlockListHelper.REQUEST_ALLOWED)) {  // The resource request matched EasyList's whitelist.
+                        // Update the whitelist result string array tracker.
+                        whitelistResultStringArray = new String[] {easyListResults[0], easyListResults[1], easyListResults[2], easyListResults[3], easyListResults[4], easyListResults[5]};
                     }
                 }
 
                 // Check EasyPrivacy if it is enabled.
                 if (easyPrivacyEnabled) {
-                    if (blockListHelper.isBlocked(currentDomain, url, isThirdPartyRequest, easyPrivacy)) {
-                        // Increment the blocked requests counters.
-                        blockedRequests++;
-                        easyPrivacyBlockedRequests++;
+                    // Check the URL against EasyPrivacy.
+                    String[] easyPrivacyResults = blockListHelper.checkBlocklist(currentDomain, url, isThirdPartyRequest, easyPrivacy);
 
-                        // Update the titles of the blocklist menu items.  This must be run from the UI thread.
-                        activity.runOnUiThread(() -> {
-                            navigationRequestsMenuItem.setTitle(getString(R.string.requests) + " - " + blockedRequests);
-                            blocklistsMenuItem.setTitle(getString(R.string.requests) + " - " + blockedRequests);
-                            easyPrivacyMenuItem.setTitle(easyPrivacyBlockedRequests + " - " + getString(R.string.easyprivacy));
-                        });
+                    // Process the EasyPrivacy results.
+                    if (easyPrivacyResults[0].equals(BlockListHelper.REQUEST_BLOCKED)) {  // The resource request matched EasyPrivacy's blacklist.
+                        // Add the result to the resource requests.
+                        nestedScrollWebView.addResourceRequest(new String[] {easyPrivacyResults[0], easyPrivacyResults[1], easyPrivacyResults[2], easyPrivacyResults[3], easyPrivacyResults[5],
+                                easyPrivacyResults[5]});
 
-                        // Reset the whitelist results tracker (because otherwise it will sometimes add results to the list due to a race condition).
-                        whiteListResultStringArray = null;
+                        // Increment the blocked requests counters.
+                        nestedScrollWebView.incrementRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS);
+                        nestedScrollWebView.incrementRequestsCount(NestedScrollWebView.EASY_PRIVACY_BLOCKED_REQUESTS);
+
+                        // Update the titles of the blocklist menu items if the WebView is currently displayed.
+                        if (webViewDisplayed) {
+                            // Updating the UI must be run from the UI thread.
+                            activity.runOnUiThread(() -> {
+                                // Update the menu item titles.
+                                navigationRequestsMenuItem.setTitle(getString(R.string.requests) + " - " + nestedScrollWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
+                                blocklistsMenuItem.setTitle(getString(R.string.blocklists) + " - " + nestedScrollWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
+                                easyPrivacyMenuItem.setTitle(nestedScrollWebView.getRequestsCount(NestedScrollWebView.EASY_PRIVACY_BLOCKED_REQUESTS) + " - " + getString(R.string.easyprivacy));
+                            });
+                        }
 
                         // The resource request was blocked.  Return an empty web resource response.
                         return emptyWebResourceResponse;
+                    } else if (easyPrivacyResults[0].equals(BlockListHelper.REQUEST_ALLOWED)) {  // The resource request matched EasyPrivacy's whitelist.
+                        // Update the whitelist result string array tracker.
+                        whitelistResultStringArray = new String[] {easyPrivacyResults[0], easyPrivacyResults[1], easyPrivacyResults[2], easyPrivacyResults[3], easyPrivacyResults[4], easyPrivacyResults[5]};
                     }
                 }
 
                 // Check Fanboy’s Annoyance List if it is enabled.
                 if (fanboysAnnoyanceListEnabled) {
-                    if (blockListHelper.isBlocked(currentDomain, url, isThirdPartyRequest, fanboysAnnoyanceList)) {
-                        // Increment the blocked requests counters.
-                        blockedRequests++;
-                        fanboysAnnoyanceListBlockedRequests++;
+                    // Check the URL against Fanboy's Annoyance List.
+                    String[] fanboysAnnoyanceListResults = blockListHelper.checkBlocklist(currentDomain, url, isThirdPartyRequest, fanboysAnnoyanceList);
 
-                        // Update the titles of the blocklist menu items.  This must be run from the UI thread.
-                        activity.runOnUiThread(() -> {
-                            navigationRequestsMenuItem.setTitle(getString(R.string.requests) + " - " + blockedRequests);
-                            blocklistsMenuItem.setTitle(getString(R.string.requests) + " - " + blockedRequests);
-                            fanboysAnnoyanceListMenuItem.setTitle(fanboysAnnoyanceListBlockedRequests + " - " + getString(R.string.fanboys_annoyance_list));
-                        });
+                    // Process the Fanboy's Annoyance List results.
+                    if (fanboysAnnoyanceListResults[0].equals(BlockListHelper.REQUEST_BLOCKED)) {  // The resource request matched Fanboy's Annoyance List's blacklist.
+                        // Add the result to the resource requests.
+                        nestedScrollWebView.addResourceRequest(new String[] {fanboysAnnoyanceListResults[0], fanboysAnnoyanceListResults[1], fanboysAnnoyanceListResults[2], fanboysAnnoyanceListResults[3],
+                                fanboysAnnoyanceListResults[4], fanboysAnnoyanceListResults[5]});
 
-                        // Reset the whitelist results tracker (because otherwise it will sometimes add results to the list due to a race condition).
-                        whiteListResultStringArray = null;
+                        // Increment the blocked requests counters.
+                        nestedScrollWebView.incrementRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS);
+                        nestedScrollWebView.incrementRequestsCount(NestedScrollWebView.FANBOYS_ANNOYANCE_LIST_BLOCKED_REQUESTS);
+
+                        // Update the titles of the blocklist menu items if the WebView is currently displayed.
+                        if (webViewDisplayed) {
+                            // Updating the UI must be run from the UI thread.
+                            activity.runOnUiThread(() -> {
+                                // Update the menu item titles.
+                                navigationRequestsMenuItem.setTitle(getString(R.string.requests) + " - " + nestedScrollWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
+                                blocklistsMenuItem.setTitle(getString(R.string.blocklists) + " - " + nestedScrollWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
+                                fanboysAnnoyanceListMenuItem.setTitle(nestedScrollWebView.getRequestsCount(NestedScrollWebView.FANBOYS_ANNOYANCE_LIST_BLOCKED_REQUESTS) + " - " +
+                                        getString(R.string.fanboys_annoyance_list));
+                            });
+                        }
 
                         // The resource request was blocked.  Return an empty web resource response.
                         return emptyWebResourceResponse;
+                    } else if (fanboysAnnoyanceListResults[0].equals(BlockListHelper.REQUEST_ALLOWED)){  // The resource request matched Fanboy's Annoyance List's whitelist.
+                        // Update the whitelist result string array tracker.
+                        whitelistResultStringArray = new String[] {fanboysAnnoyanceListResults[0], fanboysAnnoyanceListResults[1], fanboysAnnoyanceListResults[2], fanboysAnnoyanceListResults[3],
+                                fanboysAnnoyanceListResults[4], fanboysAnnoyanceListResults[5]};
                     }
                 } else if (fanboysSocialBlockingListEnabled) {  // Only check Fanboy’s Social Blocking List if Fanboy’s Annoyance List is disabled.
-                    if (blockListHelper.isBlocked(currentDomain, url, isThirdPartyRequest, fanboysSocialList)) {
-                        // Increment the blocked requests counters.
-                        blockedRequests++;
-                        fanboysSocialBlockingListBlockedRequests++;
+                    // Check the URL against Fanboy's Annoyance List.
+                    String[] fanboysSocialListResults = blockListHelper.checkBlocklist(currentDomain, url, isThirdPartyRequest, fanboysSocialList);
 
-                        // Update the titles of the blocklist menu items.  This must be run from the UI thread.
-                        activity.runOnUiThread(() -> {
-                            navigationRequestsMenuItem.setTitle(getString(R.string.requests) + " - " + blockedRequests);
-                            blocklistsMenuItem.setTitle(getString(R.string.requests) + " - " + blockedRequests);
-                            fanboysSocialBlockingListMenuItem.setTitle(fanboysSocialBlockingListBlockedRequests + " - " + getString(R.string.fanboys_social_blocking_list));
-                        });
+                    // Process the Fanboy's Social Blocking List results.
+                    if (fanboysSocialListResults[0].equals(BlockListHelper.REQUEST_BLOCKED)) {  // The resource request matched Fanboy's Social Blocking List's blacklist.
+                        // Add the result to the resource requests.
+                        nestedScrollWebView.addResourceRequest(new String[] {fanboysSocialListResults[0], fanboysSocialListResults[1], fanboysSocialListResults[2], fanboysSocialListResults[3],
+                                fanboysSocialListResults[4], fanboysSocialListResults[5]});
 
-                        // Reset the whitelist results tracker (because otherwise it will sometimes add results to the list due to a race condition).
-                        whiteListResultStringArray = null;
+                        // Increment the blocked requests counters.
+                        nestedScrollWebView.incrementRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS);
+                        nestedScrollWebView.incrementRequestsCount(NestedScrollWebView.FANBOYS_SOCIAL_BLOCKING_LIST_BLOCKED_REQUESTS);
+
+                        // Update the titles of the blocklist menu items if the WebView is currently displayed.
+                        if (webViewDisplayed) {
+                            // Updating the UI must be run from the UI thread.
+                            activity.runOnUiThread(() -> {
+                                // Update the menu item titles.
+                                navigationRequestsMenuItem.setTitle(getString(R.string.requests) + " - " + nestedScrollWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
+                                blocklistsMenuItem.setTitle(getString(R.string.blocklists) + " - " + nestedScrollWebView.getRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS));
+                                fanboysSocialBlockingListMenuItem.setTitle(nestedScrollWebView.getRequestsCount(NestedScrollWebView.FANBOYS_SOCIAL_BLOCKING_LIST_BLOCKED_REQUESTS) + " - " +
+                                        getString(R.string.fanboys_social_blocking_list));
+                            });
+                        }
 
                         // The resource request was blocked.  Return an empty web resource response.
                         return emptyWebResourceResponse;
+                    } else if (fanboysSocialListResults[0].equals(BlockListHelper.REQUEST_ALLOWED)) {  // The resource request matched Fanboy's Social Blocking List's whitelist.
+                        // Update the whitelist result string array tracker.
+                        whitelistResultStringArray = new String[] {fanboysSocialListResults[0], fanboysSocialListResults[1], fanboysSocialListResults[2], fanboysSocialListResults[3],
+                                fanboysSocialListResults[4], fanboysSocialListResults[5]};
                     }
                 }
 
                 // Add the request to the log because it hasn't been processed by any of the previous checks.
-                if (whiteListResultStringArray != null) {  // The request was processed by a whitelist.
-                    resourceRequests.add(whiteListResultStringArray);
+                if (whitelistResultStringArray != null) {  // The request was processed by a whitelist.
+                    nestedScrollWebView.addResourceRequest(whitelistResultStringArray);
                 } else {  // The request didn't match any blocklist entry.  Log it as a default request.
-                    resourceRequests.add(new String[]{String.valueOf(REQUEST_DEFAULT), url});
+                    nestedScrollWebView.addResourceRequest(new String[]{BlockListHelper.REQUEST_DEFAULT, url});
                 }
 
                 // The resource request has not been blocked.  `return null` loads the requested resource.
@@ -5094,30 +5078,26 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
 
                 // Display the HTTP authentication dialog.
                 DialogFragment httpAuthenticationDialogFragment = HttpAuthenticationDialog.displayDialog(host, realm);
-                httpAuthenticationDialogFragment.show(fragmentManager, getString(R.string.http_authentication));
+                httpAuthenticationDialogFragment.show(getSupportFragmentManager(), getString(R.string.http_authentication));
             }
 
-            // Update the URL in urlTextBox when the page starts to load.
             @Override
             public void onPageStarted(WebView view, String url, Bitmap favicon) {
                 // Set `urlIsLoading` to `true`, so that redirects while loading do not trigger changes in the user agent, which forces another reload of the existing page.
                 // This is also used to determine when to check for pinned mismatches.
                 urlIsLoading = true;
 
-                // Reset the list of host IP addresses.
-                currentHostIpAddresses = "";
-
                 // Reset the list of resource requests.
-                resourceRequests.clear();
+                nestedScrollWebView.clearResourceRequests();
 
                 // Initialize the counters for requests blocked by each blocklist.
-                blockedRequests = 0;
-                easyListBlockedRequests = 0;
-                easyPrivacyBlockedRequests = 0;
-                fanboysAnnoyanceListBlockedRequests = 0;
-                fanboysSocialBlockingListBlockedRequests = 0;
-                ultraPrivacyBlockedRequests = 0;
-                thirdPartyBlockedRequests = 0;
+                nestedScrollWebView.resetRequestsCount(NestedScrollWebView.BLOCKED_REQUESTS);
+                nestedScrollWebView.resetRequestsCount(NestedScrollWebView.EASY_LIST_BLOCKED_REQUESTS);
+                nestedScrollWebView.resetRequestsCount(NestedScrollWebView.EASY_PRIVACY_BLOCKED_REQUESTS);
+                nestedScrollWebView.resetRequestsCount(NestedScrollWebView.FANBOYS_ANNOYANCE_LIST_BLOCKED_REQUESTS);
+                nestedScrollWebView.resetRequestsCount(NestedScrollWebView.FANBOYS_SOCIAL_BLOCKING_LIST_BLOCKED_REQUESTS);
+                nestedScrollWebView.resetRequestsCount(NestedScrollWebView.ULTRA_PRIVACY_BLOCKED_REQUESTS);
+                nestedScrollWebView.resetRequestsCount(NestedScrollWebView.THIRD_PARTY_BLOCKED_REQUESTS);
 
                 // If night mode is enabled, hide `mainWebView` until after the night mode CSS is applied.
                 if (nightMode) {
@@ -5141,13 +5121,16 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                     // Get a URI for the current URL.
                     Uri currentUri = Uri.parse(formattedUrlString);
 
+                    // Reset the list of host IP addresses.
+                    nestedScrollWebView.clearCurrentIpAddresses();
+
                     // Get the IP addresses for the host.
-                    new GetHostIpAddresses(activity, currentWebView.getDomainSettingsDatabaseId()).execute(currentUri.getHost());
+                    new GetHostIpAddresses(activity, getSupportFragmentManager(), nestedScrollWebView).execute(currentUri.getHost());
 
                     // Apply any custom domain settings if the URL was loaded by navigating history.
                     if (navigatingHistory) {
                         // Apply the domain settings.
-                        boolean userAgentChanged = applyDomainSettings(url, true, false);
+                        boolean userAgentChanged = applyDomainSettings(nestedScrollWebView, url, true, false);
 
                         // Reset `navigatingHistory`.
                         navigatingHistory = false;
@@ -5242,7 +5225,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                         inputMethodManager.showSoftInput(urlEditText, 0);
 
                         // Apply the domain settings.  This clears any settings from the previous domain.
-                        applyDomainSettings(formattedUrlString, true, false);
+                        applyDomainSettings(nestedScrollWebView, formattedUrlString, true, false);
                     } else {  // `WebView` has loaded a webpage.
                         // Set the formatted URL string.  Getting the URL from the WebView instead of using the one provided by `onPageFinished` makes websites like YouTube function correctly.
                         formattedUrlString = nestedScrollWebView.getUrl();
@@ -5257,12 +5240,10 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                         }
                     }
 
-                    // Store the SSL certificate so it can be accessed from `ViewSslCertificateDialog` and `PinnedMismatchDialog`.
-                    sslCertificate = nestedScrollWebView.getCertificate();
-
                     // Check the current website information against any pinned domain information if the current IP addresses have been loaded.
-                    if (!gettingIpAddresses) {
-                        checkPinnedMismatch(currentWebView.getDomainSettingsDatabaseId());
+                    if ((nestedScrollWebView.hasPinnedSslCertificate() || nestedScrollWebView.hasPinnedIpAddresses()) && nestedScrollWebView.hasCurrentIpAddresses() &&
+                            !nestedScrollWebView.ignorePinnedDomainInformation()) {
+                        CheckPinnedMismatchHelper.checkPinnedMismatch(getSupportFragmentManager(), nestedScrollWebView);
                     }
                 }
 
@@ -5287,27 +5268,36 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                 Date currentWebsiteSslEndDate = currentWebsiteSslCertificate.getValidNotAfterDate();
 
                 // Proceed to the website if the current SSL website certificate matches the pinned domain certificate.
-                if (pinnedSslCertificate &&
-                        currentWebsiteIssuedToCName.equals(pinnedSslIssuedToCName) && currentWebsiteIssuedToOName.equals(pinnedSslIssuedToOName) &&
-                        currentWebsiteIssuedToUName.equals(pinnedSslIssuedToUName) && currentWebsiteIssuedByCName.equals(pinnedSslIssuedByCName) &&
-                        currentWebsiteIssuedByOName.equals(pinnedSslIssuedByOName) && currentWebsiteIssuedByUName.equals(pinnedSslIssuedByUName) &&
-                        currentWebsiteSslStartDate.equals(pinnedSslStartDate) && currentWebsiteSslEndDate.equals(pinnedSslEndDate)) {
-
-                    // An SSL certificate is pinned and matches the current domain certificate.  Proceed to the website without displaying an error.
-                    handler.proceed();
+                if (nestedScrollWebView.hasPinnedSslCertificate()) {
+                    // Get the pinned SSL certificate.
+                    ArrayList<Object> pinnedSslCertificateArrayList = nestedScrollWebView.getPinnedSslCertificate();
+
+                    // Extract the arrays from the array list.
+                    String[] pinnedSslCertificateStringArray = (String[]) pinnedSslCertificateArrayList.get(0);
+                    Date[] pinnedSslCertificateDateArray = (Date[]) pinnedSslCertificateArrayList.get(1);
+
+                    // Check if the current SSL certificate matches the pinned certificate.
+                    if (currentWebsiteIssuedToCName.equals(pinnedSslCertificateStringArray[0]) && currentWebsiteIssuedToOName.equals(pinnedSslCertificateStringArray[1]) &&
+                        currentWebsiteIssuedToUName.equals(pinnedSslCertificateStringArray[2]) && currentWebsiteIssuedByCName.equals(pinnedSslCertificateStringArray[3]) &&
+                        currentWebsiteIssuedByOName.equals(pinnedSslCertificateStringArray[4]) && currentWebsiteIssuedByUName.equals(pinnedSslCertificateStringArray[5]) &&
+                        currentWebsiteSslStartDate.equals(pinnedSslCertificateDateArray[0]) && currentWebsiteSslEndDate.equals(pinnedSslCertificateDateArray[1])) {
+
+                        // An SSL certificate is pinned and matches the current domain certificate.  Proceed to the website without displaying an error.
+                        handler.proceed();
+                    }
                 } else {  // Either there isn't a pinned SSL certificate or it doesn't match the current website certificate.
                     // Store `handler` so it can be accesses from `onSslErrorCancel()` and `onSslErrorProceed()`.
-                    sslErrorHandler = handler;
+                    sslErrorHandler = handler;  // TODO.  We need to pass this in instead of using a static variable.  Because multiple could be displayed at once from different tabs.
 
                     // Display the SSL error `AlertDialog`.
                     DialogFragment sslCertificateErrorDialogFragment = SslCertificateErrorDialog.displayDialog(error);
-                    sslCertificateErrorDialogFragment.show(fragmentManager, getString(R.string.ssl_certificate_error));
+                    sslCertificateErrorDialogFragment.show(getSupportFragmentManager(), getString(R.string.ssl_certificate_error));
                 }
             }
         });
 
-        // Check to see if this is the first tab.
-        if (tabNumber == 0) {
+        // Check to see if this is the first page.
+        if (pageNumber == 0) {
             // Set this nested scroll WebView as the current WebView.
             currentWebView = nestedScrollWebView;