]> gitweb.stoutner.com Git - PrivacyBrowserAndroid.git/blobdiff - app/src/main/java/com/stoutner/privacybrowser/activities/MainWebViewActivity.java
Fix crash when adding domain settings with null domain. https://redmine.stoutner...
[PrivacyBrowserAndroid.git] / app / src / main / java / com / stoutner / privacybrowser / activities / MainWebViewActivity.java
index 1a8ba7d5b53291ba57c2a4876d561627a22d44fc..2b9ad6376d95ea13ab2b23eed18fba1de73534c3 100644 (file)
@@ -368,7 +368,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
     private Activity resultLauncherActivityHandle;
 
     // Define the save URL activity result launcher.  It must be defined before `onCreate()` is run or the app will crash.
-    private final ActivityResultLauncher<String> saveUrlActivityResultLauncher = registerForActivityResult(new ActivityResultContracts.CreateDocument(),
+    private final ActivityResultLauncher<String> saveUrlActivityResultLauncher = registerForActivityResult(new ActivityResultContracts.CreateDocument("text/*"),
             new ActivityResultCallback<Uri>() {
                 @Override
                 public void onActivityResult(Uri fileUri) {
@@ -383,7 +383,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
             });
 
     // Define the save webpage archive activity result launcher.  It must be defined before `onCreate()` is run or the app will crash.
-    private final ActivityResultLauncher<String> saveWebpageArchiveActivityResultLauncher = registerForActivityResult(new ActivityResultContracts.CreateDocument(),
+    private final ActivityResultLauncher<String> saveWebpageArchiveActivityResultLauncher = registerForActivityResult(new ActivityResultContracts.CreateDocument("multipart/related"),
             new ActivityResultCallback<Uri>() {
                 @Override
                 public void onActivityResult(Uri fileUri) {
@@ -460,7 +460,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
             });
 
     // Define the save webpage image activity result launcher.  It must be defined before `onCreate()` is run or the app will crash.
-    private final ActivityResultLauncher<String> saveWebpageImageActivityResultLauncher = registerForActivityResult(new ActivityResultContracts.CreateDocument(),
+    private final ActivityResultLauncher<String> saveWebpageImageActivityResultLauncher = registerForActivityResult(new ActivityResultContracts.CreateDocument("image/png"),
             new ActivityResultCallback<Uri>() {
                 @Override
                 public void onActivityResult(Uri fileUri) {
@@ -1056,8 +1056,17 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
             // Enable DOM Storage if JavaScript is enabled.
             optionsDomStorageMenuItem.setEnabled(currentWebView.getSettings().getJavaScriptEnabled());
 
+            // Get the current theme status.
+            int currentThemeStatus = getResources().getConfiguration().uiMode & Configuration.UI_MODE_NIGHT_MASK;
+
+            // Enable dark WebView if the API is < 33 or if night mode is enabled.
+            optionsDarkWebViewMenuItem.setEnabled((Build.VERSION.SDK_INT < 33) || (currentThemeStatus == Configuration.UI_MODE_NIGHT_YES));
+
             // Set the checkbox status for dark WebView if the WebView supports it.
-            if (WebViewFeature.isFeatureSupported(WebViewFeature.FORCE_DARK)) {
+            if ((Build.VERSION.SDK_INT >= 33) && WebViewFeature.isFeatureSupported(WebViewFeature.ALGORITHMIC_DARKENING)) {  // The device is running API >= 33 and algorithmic darkening is supported.
+                optionsDarkWebViewMenuItem.setChecked(WebSettingsCompat.isAlgorithmicDarkeningAllowed(currentWebView.getSettings()));
+            } else if ((Build.VERSION.SDK_INT < 33) && WebViewFeature.isFeatureSupported(WebViewFeature.FORCE_DARK)) {  // The device is running API < 33 and the WebView supports force dark.
+                //noinspection deprecation
                 optionsDarkWebViewMenuItem.setChecked(WebSettingsCompat.getForceDark(currentWebView.getSettings()) == WebSettingsCompat.FORCE_DARK_ON);
             }
         }
@@ -1683,7 +1692,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
             return true;
         } else if (menuItemId == R.id.user_agent_custom) {  // User Agent - Custom.
             // Update the user agent.
-            currentWebView.getSettings().setUserAgentString(sharedPreferences.getString("custom_user_agent", getString(R.string.custom_user_agent_default_value)));
+            currentWebView.getSettings().setUserAgentString(sharedPreferences.getString(getString(R.string.custom_user_agent_key), getString(R.string.custom_user_agent_default_value)));
 
             // Reload the current WebView.
             currentWebView.reload();
@@ -1737,13 +1746,19 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
             return true;
         } else if (menuItemId == R.id.dark_webview) {  // Dark WebView.
             // Check to see if dark WebView is supported by this WebView.
-            if (WebViewFeature.isFeatureSupported(WebViewFeature.FORCE_DARK)) {
+            if ((Build.VERSION.SDK_INT >= 33) && WebViewFeature.isFeatureSupported(WebViewFeature.ALGORITHMIC_DARKENING)) {  // The device is running API >= 33 and algorithmic darkening is supported.
+                // Toggle algorithmic darkening.
+                WebSettingsCompat.setAlgorithmicDarkeningAllowed(currentWebView.getSettings(), !WebSettingsCompat.isAlgorithmicDarkeningAllowed(currentWebView.getSettings()));
+            } else if ((Build.VERSION.SDK_INT < 33) && WebViewFeature.isFeatureSupported(WebViewFeature.FORCE_DARK)) {  // The device is running API < 33 and the WebView supports force dark.
                 // Toggle the dark WebView setting.
+                //noinspection deprecation
                 if (WebSettingsCompat.getForceDark(currentWebView.getSettings()) == WebSettingsCompat.FORCE_DARK_ON) {  // Dark WebView is currently enabled.
                     // Turn off dark WebView.
+                    //noinspection deprecation
                     WebSettingsCompat.setForceDark(currentWebView.getSettings(), WebSettingsCompat.FORCE_DARK_OFF);
                 } else {  // Dark WebView is currently disabled.
                     // Turn on dark WebView.
+                    //noinspection deprecation
                     WebSettingsCompat.setForceDark(currentWebView.getSettings(), WebSettingsCompat.FORCE_DARK_ON);
                 }
             }
@@ -1900,19 +1915,19 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
             // Consume the event.
             return true;
         } else if (menuItemId == R.id.add_or_edit_domain) {  // Add or edit domain.
+            // Reapply the domain settings on returning to `MainWebViewActivity`.
+            reapplyDomainSettingsOnRestart = true;
+
             // Check if domain settings currently exist.
             if (currentWebView.getDomainSettingsApplied()) {  // Edit the current domain settings.
-                // Reapply the domain settings on returning to `MainWebViewActivity`.
-                reapplyDomainSettingsOnRestart = true;
-
                 // Create an intent to launch the domains activity.
                 Intent domainsIntent = new Intent(this, DomainsActivity.class);
 
                 // Add the extra information to the intent.
-                domainsIntent.putExtra("load_domain", currentWebView.getDomainSettingsDatabaseId());
-                domainsIntent.putExtra("close_on_back", true);
-                domainsIntent.putExtra("current_url", currentWebView.getUrl());
-                domainsIntent.putExtra("current_ip_addresses", currentWebView.getCurrentIpAddresses());
+                domainsIntent.putExtra(DomainsActivity.LOAD_DOMAIN, currentWebView.getDomainSettingsDatabaseId());
+                domainsIntent.putExtra(DomainsActivity.CLOSE_ON_BACK, true);
+                domainsIntent.putExtra(DomainsActivity.CURRENT_URL, currentWebView.getUrl());
+                domainsIntent.putExtra(DomainsActivity.CURRENT_IP_ADDRESSES, currentWebView.getCurrentIpAddresses());
 
                 // Get the current certificate.
                 SslCertificate sslCertificate = currentWebView.getCertificate();
@@ -1930,26 +1945,29 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                     long endDateLong = sslCertificate.getValidNotAfterDate().getTime();
 
                     // Add the certificate to the intent.
-                    domainsIntent.putExtra("ssl_issued_to_cname", issuedToCName);
-                    domainsIntent.putExtra("ssl_issued_to_oname", issuedToOName);
-                    domainsIntent.putExtra("ssl_issued_to_uname", issuedToUName);
-                    domainsIntent.putExtra("ssl_issued_by_cname", issuedByCName);
-                    domainsIntent.putExtra("ssl_issued_by_oname", issuedByOName);
-                    domainsIntent.putExtra("ssl_issued_by_uname", issuedByUName);
-                    domainsIntent.putExtra("ssl_start_date", startDateLong);
-                    domainsIntent.putExtra("ssl_end_date", endDateLong);
+                    domainsIntent.putExtra(DomainsActivity.SSL_ISSUED_TO_CNAME, issuedToCName);
+                    domainsIntent.putExtra(DomainsActivity.SSL_ISSUED_TO_ONAME, issuedToOName);
+                    domainsIntent.putExtra(DomainsActivity.SSL_ISSUED_TO_UNAME, issuedToUName);
+                    domainsIntent.putExtra(DomainsActivity.SSL_ISSUED_BY_CNAME, issuedByCName);
+                    domainsIntent.putExtra(DomainsActivity.SSL_ISSUED_BY_ONAME, issuedByOName);
+                    domainsIntent.putExtra(DomainsActivity.SSL_ISSUED_BY_UNAME, issuedByUName);
+                    domainsIntent.putExtra(DomainsActivity.SSL_START_DATE, startDateLong);
+                    domainsIntent.putExtra(DomainsActivity.SSL_END_DATE, endDateLong);
                 }
 
                 // Make it so.
                 startActivity(domainsIntent);
             } else {  // Add a new domain.
-                // Apply the new domain settings on returning to `MainWebViewActivity`.
-                reapplyDomainSettingsOnRestart = true;
-
-                // Get the current domain
+                // Get the current URI.
                 Uri currentUri = Uri.parse(currentWebView.getUrl());
+
+                // Get the current domain from the URI.
                 String currentDomain = currentUri.getHost();
 
+                // Set an empty domain if it is null.
+                if (currentDomain == null)
+                    currentDomain = "";
+
                 // Create the domain and store the database ID.
                 int newDomainDatabaseId = domainsDatabaseHelper.addDomain(currentDomain);
 
@@ -1957,10 +1975,10 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                 Intent domainsIntent = new Intent(this, DomainsActivity.class);
 
                 // Add the extra information to the intent.
-                domainsIntent.putExtra("load_domain", newDomainDatabaseId);
-                domainsIntent.putExtra("close_on_back", true);
-                domainsIntent.putExtra("current_url", currentWebView.getUrl());
-                domainsIntent.putExtra("current_ip_addresses", currentWebView.getCurrentIpAddresses());
+                domainsIntent.putExtra(DomainsActivity.LOAD_DOMAIN, newDomainDatabaseId);
+                domainsIntent.putExtra(DomainsActivity.CLOSE_ON_BACK, true);
+                domainsIntent.putExtra(DomainsActivity.CURRENT_URL, currentWebView.getUrl());
+                domainsIntent.putExtra(DomainsActivity.CURRENT_IP_ADDRESSES, currentWebView.getCurrentIpAddresses());
 
                 // Get the current certificate.
                 SslCertificate sslCertificate = currentWebView.getCertificate();
@@ -1978,14 +1996,14 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                     long endDateLong = sslCertificate.getValidNotAfterDate().getTime();
 
                     // Add the certificate to the intent.
-                    domainsIntent.putExtra("ssl_issued_to_cname", issuedToCName);
-                    domainsIntent.putExtra("ssl_issued_to_oname", issuedToOName);
-                    domainsIntent.putExtra("ssl_issued_to_uname", issuedToUName);
-                    domainsIntent.putExtra("ssl_issued_by_cname", issuedByCName);
-                    domainsIntent.putExtra("ssl_issued_by_oname", issuedByOName);
-                    domainsIntent.putExtra("ssl_issued_by_uname", issuedByUName);
-                    domainsIntent.putExtra("ssl_start_date", startDateLong);
-                    domainsIntent.putExtra("ssl_end_date", endDateLong);
+                    domainsIntent.putExtra(DomainsActivity.SSL_ISSUED_TO_CNAME, issuedToCName);
+                    domainsIntent.putExtra(DomainsActivity.SSL_ISSUED_TO_ONAME, issuedToOName);
+                    domainsIntent.putExtra(DomainsActivity.SSL_ISSUED_TO_UNAME, issuedToUName);
+                    domainsIntent.putExtra(DomainsActivity.SSL_ISSUED_BY_CNAME, issuedByCName);
+                    domainsIntent.putExtra(DomainsActivity.SSL_ISSUED_BY_ONAME, issuedByOName);
+                    domainsIntent.putExtra(DomainsActivity.SSL_ISSUED_BY_UNAME, issuedByUName);
+                    domainsIntent.putExtra(DomainsActivity.SSL_START_DATE, startDateLong);
+                    domainsIntent.putExtra(DomainsActivity.SSL_END_DATE, endDateLong);
                 }
 
                 // Make it so.
@@ -2123,8 +2141,8 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
             Intent domainsIntent = new Intent(this, DomainsActivity.class);
 
             // Add the extra information to the intent.
-            domainsIntent.putExtra("current_url", currentWebView.getUrl());
-            domainsIntent.putExtra("current_ip_addresses", currentWebView.getCurrentIpAddresses());
+            domainsIntent.putExtra(DomainsActivity.CURRENT_URL, currentWebView.getUrl());
+            domainsIntent.putExtra(DomainsActivity.CURRENT_IP_ADDRESSES, currentWebView.getCurrentIpAddresses());
 
             // Get the current certificate.
             SslCertificate sslCertificate = currentWebView.getCertificate();
@@ -3779,12 +3797,12 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
 
             // Store the general preference information.
             boolean defaultXRequestedWithHeader = sharedPreferences.getBoolean(getString(R.string.x_requested_with_header_key), true);
-            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));
-            boolean defaultSwipeToRefresh = sharedPreferences.getBoolean("swipe_to_refresh", true);
-            String webViewTheme = sharedPreferences.getString("webview_theme", getString(R.string.webview_theme_default_value));
-            boolean wideViewport = sharedPreferences.getBoolean("wide_viewport", true);
-            boolean displayWebpageImages = sharedPreferences.getBoolean("display_webpage_images", true);
+            String defaultFontSizeString = sharedPreferences.getString(getString(R.string.font_size_key), getString(R.string.font_size_default_value));
+            String defaultUserAgentName = sharedPreferences.getString(getString(R.string.user_agent_key), getString(R.string.user_agent_default_value));
+            boolean defaultSwipeToRefresh = sharedPreferences.getBoolean(getString(R.string.swipe_to_refresh_key), true);
+            String webViewTheme = sharedPreferences.getString(getString(R.string.webview_theme_key), getString(R.string.webview_theme_default_value));
+            boolean wideViewport = sharedPreferences.getBoolean(getString(R.string.wide_viewport_key), true);
+            boolean displayWebpageImages = sharedPreferences.getBoolean(getString(R.string.display_webpage_images_key), true);
 
             // Get the WebView theme entry values string array.
             String[] webViewThemeEntryValuesStringArray = getResources().getStringArray(R.array.webview_theme_entry_values);
@@ -3914,7 +3932,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
 
                         case SETTINGS_CUSTOM_USER_AGENT:
                             // Set the default custom user agent.
-                            nestedScrollWebView.getSettings().setUserAgentString(sharedPreferences.getString("custom_user_agent", getString(R.string.custom_user_agent_default_value)));
+                            nestedScrollWebView.getSettings().setUserAgentString(sharedPreferences.getString(getString(R.string.custom_user_agent_key), getString(R.string.custom_user_agent_default_value)));
                             break;
 
                         default:
@@ -3975,16 +3993,48 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                 }
 
                 // Check to see if WebView themes are supported.
-                if (WebViewFeature.isFeatureSupported(WebViewFeature.FORCE_DARK)) {
+                if ((Build.VERSION.SDK_INT >= 33) && WebViewFeature.isFeatureSupported(WebViewFeature.ALGORITHMIC_DARKENING)) {  // The device is running API >= 33 and algorithmic darkening is supported.
+                    // Set the WebView theme.
+                    switch (webViewThemeInt) {
+                        case DomainsDatabaseHelper.SYSTEM_DEFAULT:
+                            // Set the WebView theme.  A switch statement cannot be used because the WebView theme entry values string array is not a compile time constant.
+                            if (webViewTheme.equals(webViewThemeEntryValuesStringArray[1])) {  // The light theme is selected.
+                                // Turn off algorithmic darkening.
+                                WebSettingsCompat.setAlgorithmicDarkeningAllowed(nestedScrollWebView.getSettings(), false);
+                            } else if (webViewTheme.equals(webViewThemeEntryValuesStringArray[2])) {  // The dark theme is selected.
+                                // Turn on algorithmic darkening.
+                                WebSettingsCompat.setAlgorithmicDarkeningAllowed(nestedScrollWebView.getSettings(), true);
+                            } else {  // The system default theme is selected.
+                                // Get the current system theme status.
+                                int currentThemeStatus = getResources().getConfiguration().uiMode & Configuration.UI_MODE_NIGHT_MASK;
+
+                                // Set the algorithmic darkening according to the current system theme status.
+                                WebSettingsCompat.setAlgorithmicDarkeningAllowed(nestedScrollWebView.getSettings(), (currentThemeStatus == Configuration.UI_MODE_NIGHT_YES));
+                            }
+                            break;
+
+                        case DomainsDatabaseHelper.LIGHT_THEME:
+                            // Turn off algorithmic darkening.
+                            WebSettingsCompat.setAlgorithmicDarkeningAllowed(nestedScrollWebView.getSettings(), false);
+                            break;
+
+                        case DomainsDatabaseHelper.DARK_THEME:
+                            // Turn on algorithmic darkening.
+                            WebSettingsCompat.setAlgorithmicDarkeningAllowed(nestedScrollWebView.getSettings(), true);
+                            break;
+                    }
+                } else if ((Build.VERSION.SDK_INT < 33) && WebViewFeature.isFeatureSupported(WebViewFeature.FORCE_DARK)) {  // The device is running API < 33 and the WebView supports force dark.
                     // Set the WebView theme.
                     switch (webViewThemeInt) {
                         case DomainsDatabaseHelper.SYSTEM_DEFAULT:
                             // Set the WebView theme.  A switch statement cannot be used because the WebView theme entry values string array is not a compile time constant.
                             if (webViewTheme.equals(webViewThemeEntryValuesStringArray[1])) {  // The light theme is selected.
                                 // Turn off the WebView dark mode.
+                                //noinspection deprecation
                                 WebSettingsCompat.setForceDark(nestedScrollWebView.getSettings(), WebSettingsCompat.FORCE_DARK_OFF);
                             } else if (webViewTheme.equals(webViewThemeEntryValuesStringArray[2])) {  // The dark theme is selected.
                                 // Turn on the WebView dark mode.
+                                //noinspection deprecation
                                 WebSettingsCompat.setForceDark(nestedScrollWebView.getSettings(), WebSettingsCompat.FORCE_DARK_ON);
                             } else {  // The system default theme is selected.
                                 // Get the current system theme status.
@@ -3993,9 +4043,11 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                                 // Set the WebView theme according to the current system theme status.
                                 if (currentThemeStatus == Configuration.UI_MODE_NIGHT_NO) {  // The system is in day mode.
                                     // Turn off the WebView dark mode.
+                                    //noinspection deprecation
                                     WebSettingsCompat.setForceDark(nestedScrollWebView.getSettings(), WebSettingsCompat.FORCE_DARK_OFF);
                                 } else {  // The system is in night mode.
                                     // Turn on the WebView dark mode.
+                                    //noinspection deprecation
                                     WebSettingsCompat.setForceDark(nestedScrollWebView.getSettings(), WebSettingsCompat.FORCE_DARK_ON);
                                 }
                             }
@@ -4003,11 +4055,13 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
 
                         case DomainsDatabaseHelper.LIGHT_THEME:
                             // Turn off the WebView dark mode.
+                            //noinspection deprecation
                             WebSettingsCompat.setForceDark(nestedScrollWebView.getSettings(), WebSettingsCompat.FORCE_DARK_OFF);
                             break;
 
                         case DomainsDatabaseHelper.DARK_THEME:
                             // Turn on the WebView dark mode.
+                            //noinspection deprecation
                             WebSettingsCompat.setForceDark(nestedScrollWebView.getSettings(), WebSettingsCompat.FORCE_DARK_ON);
                             break;
                     }
@@ -4114,7 +4168,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
 
                     case SETTINGS_CUSTOM_USER_AGENT:
                         // Set the default custom user agent.
-                        nestedScrollWebView.getSettings().setUserAgentString(sharedPreferences.getString("custom_user_agent", getString(R.string.custom_user_agent_default_value)));
+                        nestedScrollWebView.getSettings().setUserAgentString(sharedPreferences.getString(getString(R.string.custom_user_agent_key), getString(R.string.custom_user_agent_default_value)));
                         break;
 
                     default:
@@ -4123,13 +4177,30 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                 }
 
                 // Apply the WebView theme if supported by the installed WebView.
-                if (WebViewFeature.isFeatureSupported(WebViewFeature.FORCE_DARK)) {
+                if ((Build.VERSION.SDK_INT >= 33) && WebViewFeature.isFeatureSupported(WebViewFeature.ALGORITHMIC_DARKENING)) {  // The device is running API >= 33 and algorithmic darkening is supported.
+                    // Set the WebView theme.  A switch statement cannot be used because the WebView theme entry values string array is not a compile time constant.
+                    if (webViewTheme.equals(webViewThemeEntryValuesStringArray[1])) {  // the light theme is selected.
+                        // Turn off algorithmic darkening.
+                        WebSettingsCompat.setAlgorithmicDarkeningAllowed(nestedScrollWebView.getSettings(), false);
+                    } else if (webViewTheme.equals(webViewThemeEntryValuesStringArray[2])) {  // The dark theme is selected.
+                        // Turn on algorithmic darkening.
+                        WebSettingsCompat.setAlgorithmicDarkeningAllowed(nestedScrollWebView.getSettings(), true);
+                    } else {  // The system default theme is selected.
+                        // Get the current system theme status.
+                        int currentThemeStatus = getResources().getConfiguration().uiMode & Configuration.UI_MODE_NIGHT_MASK;
+
+                        // Set the algorithmic darkening according to the current system theme status.
+                        WebSettingsCompat.setAlgorithmicDarkeningAllowed(nestedScrollWebView.getSettings(), currentThemeStatus == Configuration.UI_MODE_NIGHT_YES);
+                    }
+                } else if ((Build.VERSION.SDK_INT < 33) && WebViewFeature.isFeatureSupported(WebViewFeature.FORCE_DARK)) {  // The device is running API < 33 and the WebView supports force dark.
                     // Set the WebView theme.  A switch statement cannot be used because the WebView theme entry values string array is not a compile time constant.
                     if (webViewTheme.equals(webViewThemeEntryValuesStringArray[1])) {  // The light theme is selected.
                         // Turn off the WebView dark mode.
+                        //noinspection deprecation
                         WebSettingsCompat.setForceDark(nestedScrollWebView.getSettings(), WebSettingsCompat.FORCE_DARK_OFF);
                     } else if (webViewTheme.equals(webViewThemeEntryValuesStringArray[2])) {  // The dark theme is selected.
                         // Turn on the WebView dark mode.
+                        //noinspection deprecation
                         WebSettingsCompat.setForceDark(nestedScrollWebView.getSettings(), WebSettingsCompat.FORCE_DARK_ON);
                     } else {  // The system default theme is selected.
                         // Get the current system theme status.
@@ -4138,9 +4209,11 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                         // Set the WebView theme according to the current system theme status.
                         if (currentThemeStatus == Configuration.UI_MODE_NIGHT_NO) {  // The system is in day mode.
                             // Turn off the WebView dark mode.
+                            //noinspection deprecation
                             WebSettingsCompat.setForceDark(nestedScrollWebView.getSettings(), WebSettingsCompat.FORCE_DARK_OFF);
                         } else {  // The system is in night mode.
                             // Turn on the WebView dark mode.
+                            //noinspection deprecation
                             WebSettingsCompat.setForceDark(nestedScrollWebView.getSettings(), WebSettingsCompat.FORCE_DARK_ON);
                         }
                     }
@@ -4855,7 +4928,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
 
                 // Delete the secondary `Service Worker` cache directory.
                 // A string array must be used because the directory contains a space and `Runtime.exec` will otherwise not escape the string correctly.
-                Process deleteServiceWorkerProcess = runtime.exec(new String[] {"rm", "-rf", privateDataDirectoryString + "/app_webview/Service Worker/"});
+                Process deleteServiceWorkerProcess = runtime.exec(new String[] {"rm", "-rf", privateDataDirectoryString + "/app_webview/Default/Service Worker/"});
 
                 // Wait until the processes have finished.
                 deleteCacheProcess.waitFor();
@@ -5027,16 +5100,46 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
         SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
 
         // Get the WebView theme.
-        String webViewTheme = sharedPreferences.getString("webview_theme", getString(R.string.webview_theme_default_value));
+        String webViewTheme = sharedPreferences.getString(getString(R.string.webview_theme_key), getString(R.string.webview_theme_default_value));
 
         // Get the WebView theme entry values string array.
         String[] webViewThemeEntryValuesStringArray = getResources().getStringArray(R.array.webview_theme_entry_values);
 
         // Apply the WebView theme if supported by the installed WebView.
-        if (WebViewFeature.isFeatureSupported(WebViewFeature.FORCE_DARK)) {
+        if ((Build.VERSION.SDK_INT >= 33) && WebViewFeature.isFeatureSupported(WebViewFeature.ALGORITHMIC_DARKENING)) {  // The device is running API >= 33 and algorithmic darkening is supported.
+            // Set the WebView them.  A switch statement cannot be used because the WebView theme entry values string array is not a compile time constant.
+            if (webViewTheme.equals(webViewThemeEntryValuesStringArray[1])) {  // The light theme is selected.
+                // Turn off algorithmic darkening.
+                WebSettingsCompat.setAlgorithmicDarkeningAllowed(nestedScrollWebView.getSettings(), false);
+
+                // Make the WebView visible. The WebView was created invisible in `webview_framelayout` to prevent a white background splash in night mode.
+                // If the system is currently in night mode, showing the WebView will be handled in `onProgressChanged()`.
+                nestedScrollWebView.setVisibility(View.VISIBLE);
+            } else if (webViewTheme.equals(webViewThemeEntryValuesStringArray[2])) {  // The dark theme is selected.
+                // Turn on algorithmic darkening.
+                WebSettingsCompat.setAlgorithmicDarkeningAllowed(nestedScrollWebView.getSettings(), true);
+            } else {
+                // The system default theme is selected.
+                int currentThemeStatus = getResources().getConfiguration().uiMode & Configuration.UI_MODE_NIGHT_MASK;
+
+                // Set the algorithmic darkening according to the current system theme status.
+                if (currentThemeStatus == Configuration.UI_MODE_NIGHT_NO) {  // The system is in day mode.
+                    // Turn off algorithmic darkening.
+                    WebSettingsCompat.setAlgorithmicDarkeningAllowed(nestedScrollWebView.getSettings(), false);
+
+                    // Make the WebView visible. The WebView was created invisible in `webview_framelayout` to prevent a white background splash in night mode.
+                    // If the system is currently in night mode, showing the WebView will be handled in `onProgressChanged()`.
+                    nestedScrollWebView.setVisibility(View.VISIBLE);
+                } else {  // The system is in night mode.
+                    // Turn on algorithmic darkening.
+                    WebSettingsCompat.setAlgorithmicDarkeningAllowed(nestedScrollWebView.getSettings(), true);
+                }
+            }
+        } else if ((Build.VERSION.SDK_INT < 33) && WebViewFeature.isFeatureSupported(WebViewFeature.FORCE_DARK)) {  // The device is running API < 33 and the WebView supports force dark.
             // Set the WebView theme.  A switch statement cannot be used because the WebView theme entry values string array is not a compile time constant.
             if (webViewTheme.equals(webViewThemeEntryValuesStringArray[1])) {  // The light theme is selected.
                 // Turn off the WebView dark mode.
+                //noinspection deprecation
                 WebSettingsCompat.setForceDark(nestedScrollWebView.getSettings(), WebSettingsCompat.FORCE_DARK_OFF);
 
                 // Make the WebView visible. The WebView was created invisible in `webview_framelayout` to prevent a white background splash in night mode.
@@ -5044,6 +5147,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                 nestedScrollWebView.setVisibility(View.VISIBLE);
             } else if (webViewTheme.equals(webViewThemeEntryValuesStringArray[2])) {  // The dark theme is selected.
                 // Turn on the WebView dark mode.
+                //noinspection deprecation
                 WebSettingsCompat.setForceDark(nestedScrollWebView.getSettings(), WebSettingsCompat.FORCE_DARK_ON);
             } else {  // The system default theme is selected.
                 // Get the current system theme status.
@@ -5052,6 +5156,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                 // Set the WebView theme according to the current system theme status.
                 if (currentThemeStatus == Configuration.UI_MODE_NIGHT_NO) {  // The system is in day mode.
                     // Turn off the WebView dark mode.
+                    //noinspection deprecation
                     WebSettingsCompat.setForceDark(nestedScrollWebView.getSettings(), WebSettingsCompat.FORCE_DARK_OFF);
 
                     // Make the WebView visible. The WebView was created invisible in `webview_framelayout` to prevent a white background splash in night mode.
@@ -5059,6 +5164,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                     nestedScrollWebView.setVisibility(View.VISIBLE);
                 } else {  // The system is in night mode.
                     // Turn on the WebView dark mode.
+                    //noinspection deprecation
                     WebSettingsCompat.setForceDark(nestedScrollWebView.getSettings(), WebSettingsCompat.FORCE_DARK_ON);
                 }
             }
@@ -5216,7 +5322,7 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                     // Calculate the Y change.
                     float motionY = motionEvent2.getY() - motionEvent1.getY();
 
-                    // Scroll the app bar if the change is greater than 100 pixels.
+                    // Scroll the app bar if the change is greater than 50 pixels.
                     if (motionY > 50) {
                         // Animate the bottom app bar onto the screen.
                         objectAnimator = ObjectAnimator.ofFloat(appBarLayout, "translationY", 0);
@@ -6026,6 +6132,10 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                     }
                 }
 
+                 // Get the application's private data directory, which will be something like `/data/user/0/com.stoutner.privacybrowser.standard`,
+                // which links to `/data/data/com.stoutner.privacybrowser.standard`.
+                String privateDataDirectoryString = getApplicationInfo().dataDir;
+
                 // Clear the cache, history, and logcat if Incognito Mode is enabled.
                 if (incognitoModeEnabled) {
                     // Clear the cache.  `true` includes disk files.
@@ -6036,16 +6146,8 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
 
                     // Manually delete cache folders.
                     try {
-                        // Get the application's private data directory, which will be something like `/data/user/0/com.stoutner.privacybrowser.standard`,
-                        // which links to `/data/data/com.stoutner.privacybrowser.standard`.
-                        String privateDataDirectoryString = getApplicationInfo().dataDir;
-
                         // Delete the main cache directory.
                         Runtime.getRuntime().exec("rm -rf " + privateDataDirectoryString + "/cache");
-
-                        // Delete the secondary `Service Worker` cache directory.
-                        // A `String[]` must be used because the directory contains a space and `Runtime.exec` will not escape the string correctly otherwise.
-                        Runtime.getRuntime().exec(new String[]{"rm", "-rf", privateDataDirectoryString + "/app_webview/Service Worker/"});
                     } catch (IOException exception) {
                         // Do nothing if an error is thrown.
                     }
@@ -6059,6 +6161,14 @@ public class MainWebViewActivity extends AppCompatActivity implements CreateBook
                     }
                 }
 
+                // Clear the `Service Worker` directory.
+                try {
+                    // A `String[]` must be used because the directory contains a space and `Runtime.exec` will not escape the string correctly otherwise.
+                    Runtime.getRuntime().exec(new String[]{"rm", "-rf", privateDataDirectoryString + "/app_webview/Default/Service Worker/"});
+                } catch (IOException exception) {
+                    // Do nothing.
+                }
+
                 // Get the current page position.
                 int currentPagePosition = webViewPagerAdapter.getPositionForId(nestedScrollWebView.getWebViewFragmentId());