app/src/main/java/com/stoutner/privacybrowser/fragments/SettingsFragment.java

   1 /*
   2  * Copyright 2016-2017 Soren Stoutner <soren@stoutner.com>.
   3  *
   4  * This file is part of Privacy Browser <https://www.stoutner.com/privacy-browser>.
   5  *
   6  * Privacy Browser is free software: you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation, either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * Privacy Browser is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with Privacy Browser.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 package com.stoutner.privacybrowser.fragments;
  21
  22 import android.annotation.SuppressLint;
  23 import android.content.SharedPreferences;
  24 import android.os.Bundle;
  25 import android.preference.Preference;
  26 import android.preference.PreferenceFragment;
  27 import android.view.LayoutInflater;
  28 import android.view.View;
  29 import android.webkit.WebView;
  30
  31 import com.stoutner.privacybrowser.R;
  32
  33 public class SettingsFragment extends PreferenceFragment {
  34     private SharedPreferences.OnSharedPreferenceChangeListener preferencesListener;
  35     private SharedPreferences savedPreferences;
  36
  37     @Override
  38     public void onCreate(Bundle savedInstanceState) {
  39         super.onCreate(savedInstanceState);
  40         addPreferencesFromResource(R.xml.preferences);
  41
  42         // Initialize savedPreferences.
  43         savedPreferences = getPreferenceScreen().getSharedPreferences();
  44
  45         // Get handles for the preferences we need to modify.
  46         final Preference domStorageEnabled = findPreference("dom_storage_enabled");
  47         final Preference thirdPartyCookiesEnabled = findPreference("third_party_cookies_enabled");
  48         final Preference userAgentPreference = findPreference("user_agent");
  49         final Preference customUserAgent = findPreference("custom_user_agent");
  50         final Preference javaScriptDisabledSearchPreference = findPreference("javascript_disabled_search");
  51         final Preference javaScriptDisabledSearchCustomURLPreference = findPreference("javascript_disabled_search_custom_url");
  52         final Preference javaScriptEnabledSearchPreference = findPreference("javascript_enabled_search");
  53         final Preference javaScriptEnabledSearchCustomURLPreference = findPreference("javascript_enabled_search_custom_url");
  54         final Preference hideSystemBarsPreference = findPreference("hide_system_bars");
  55         final Preference translucentNavigationBarPreference = findPreference("translucent_navigation_bar");
  56         final Preference torHomepagePreference = findPreference("tor_homepage");
  57         final Preference torJavaScriptDisabledSearchPreference = findPreference("tor_javascript_disabled_search");
  58         final Preference torJavaScriptDisabledSearchCustomURLPreference = findPreference("tor_javascript_disabled_search_custom_url");
  59         final Preference torJavaScriptEnabledSearchPreference = findPreference("tor_javascript_enabled_search");
  60         final Preference torJavaScriptEnabledSearchCustomURLPreference = findPreference("tor_javascript_enabled_search_custom_url");
  61         final Preference homepagePreference = findPreference("homepage");
  62         final Preference defaultFontSizePreference = findPreference("default_font_size");
  63
  64         // Get booleans from the preferences.
  65         final boolean fullScreenBrowsingModeEnabled = savedPreferences.getBoolean("enable_full_screen_browsing_mode", false);
  66         final boolean proxyThroughOrbot = savedPreferences.getBoolean("proxy_through_orbot", false);
  67
  68         // Get strings from the preferences.
  69         String javaScriptDisabledSearchString = savedPreferences.getString("javascript_disabled_search", "https://duckduckgo.com/html/?q=");
  70         String javaScriptEnabledSearchString = savedPreferences.getString("javascript_enabled_search", "https://duckduckgo.com/?q=");
  71         String torJavaScriptDisabledSearchString = savedPreferences.getString("tor_javascript_disabled_search", "https://3g2upl4pq6kufc4m.onion/html/?q=");
  72         String torJavaScriptEnabledSearchString = savedPreferences.getString("tor_javascript_enabled_search", "https://3g2upl4pq6kufc4m.onion/?q=");
  73         String defaultFontSizeString = savedPreferences.getString("default_font_size", "100");
  74
  75         // Allow the user to access "dom_storage_enabled" if "javascript_enabled" is enabled.  The default is false.
  76         domStorageEnabled.setEnabled(savedPreferences.getBoolean("javascript_enabled", false));
  77
  78         // Allow the user to access "third_party_cookies_enabled" if "first_party_cookies_enabled" is enabled.  The default is false.
  79         thirdPartyCookiesEnabled.setEnabled(savedPreferences.getBoolean("first_party_cookies_enabled", false));
  80
  81
  82         // We need an inflated `WebView` to get the default user agent.
  83         LayoutInflater inflater = getActivity().getLayoutInflater();
  84         // `@SuppressLint("InflateParams")` removes the warning about using `null` as the `ViewGroup`, which in this case makes sense because we don't want to display `bare_webview` on the screen.
  85         // `false` does not attach the view to the root.
  86         @SuppressLint("InflateParams") View bareWebViewLayout = inflater.inflate(R.layout.bare_webview, null, false);
  87         final WebView bareWebView = (WebView) bareWebViewLayout.findViewById(R.id.bare_webview);
  88
  89         // Set the current user-agent as the summary text for the "user_agent" preference when the preference screen is loaded.
  90         switch (savedPreferences.getString("user_agent", "PrivacyBrowser/1.0")) {
  91             case "Default user agent":
  92                 // Get the user agent text from the webview (which changes based on the version of Android and WebView installed).
  93                 userAgentPreference.setSummary(bareWebView.getSettings().getUserAgentString());
  94                 break;
  95
  96             case "Custom user agent":
  97                 // We can't use the string from the array because it is referenced in code and can't be translated.
  98                 userAgentPreference.setSummary(R.string.custom_user_agent);
  99                 break;
 100
 101             default:
 102                 // Display the user agent from the preference as the summary text.
 103                 userAgentPreference.setSummary(savedPreferences.getString("user_agent", "PrivacyBrowser/1.0"));
 104                 break;
 105         }
 106
 107         // Set the summary text for "custom_user_agent" (the default is "PrivacyBrowser/1.0") and enable it if "user_agent" it set to "Custom user agent".
 108         customUserAgent.setSummary(savedPreferences.getString("custom_user_agent", "PrivacyBrowser/1.0"));
 109         customUserAgent.setEnabled(userAgentPreference.getSummary().equals("Custom user agent"));
 110
 111
 112         // Set the JavaScript-disabled search URL as the summary text for the JavaScript-disabled search preference when the preference screen is loaded.  The default is `https://duckduckgo.com/html/?q=`.
 113         if (javaScriptDisabledSearchString.equals("Custom URL")) {
 114             // Use R.string.custom_url, which will be translated, instead of the array value, which will not.
 115             javaScriptDisabledSearchPreference.setSummary(R.string.custom_url);
 116         } else {
 117             // Set the array value as the summary text.
 118             javaScriptDisabledSearchPreference.setSummary(javaScriptDisabledSearchString);
 119         }
 120
 121         // Set the summary text for `javascript_disabled_search_custom_url` (the default is `""`) and enable it if `javascript_disabled_search` is set to `Custom URL`.
 122         javaScriptDisabledSearchCustomURLPreference.setSummary(savedPreferences.getString("javascript_disabled_search_custom_url", ""));
 123         javaScriptDisabledSearchCustomURLPreference.setEnabled(javaScriptDisabledSearchString.equals("Custom URL"));
 124
 125
 126         // Set the JavaScript-enabled search URL as the summary text for the JavaScript-enabled search preference when the preference screen is loaded.  The default is `https://duckduckgo.com/?q=`.
 127         if (javaScriptEnabledSearchString.equals("Custom URL")) {
 128             // If set to "Custom URL", use R.string.custom_url, which will be translated, instead of the array value, which will not.
 129             javaScriptEnabledSearchPreference.setSummary(R.string.custom_url);
 130         } else {
 131             // Set the array value as the summary text.
 132             javaScriptEnabledSearchPreference.setSummary(javaScriptEnabledSearchString);
 133         }
 134
 135         // Set the summary text for `javascript_enabled_search_custom_url` (the default is `""`) and enable it if `javascript_enabled_search` is set to `Custom URL`.
 136         javaScriptEnabledSearchCustomURLPreference.setSummary(savedPreferences.getString("javascript_enabled_search_custom_url", ""));
 137         javaScriptEnabledSearchCustomURLPreference.setEnabled(javaScriptEnabledSearchString.equals("Custom URL"));
 138
 139
 140         // Enable the full screen options if full screen browsing mode is enabled.
 141         if (!fullScreenBrowsingModeEnabled) {
 142             // Disable the full screen options.
 143             hideSystemBarsPreference.setEnabled(false);
 144             translucentNavigationBarPreference.setEnabled(false);
 145         } else {
 146             // Disable `transparent_navigation_bar` if `hide_system_bars` is `true`.
 147             translucentNavigationBarPreference.setEnabled(!savedPreferences.getBoolean("hide_system_bars", false));
 148         }
 149
 150
 151         // Set the Tor homepage URL as the summary text for the `tor_homepage` preference when the preference screen is loaded.  The default is DuckDuckGo: `https://3g2upl4pq6kufc4m.onion`.
 152         torHomepagePreference.setSummary(savedPreferences.getString("tor_homepage", "https://3g2upl4pq6kufc4m.onion"));
 153
 154
 155         // Set the Tor JavaScript-disabled search URL as the summary text for the Tor JavaScript-disabled search preference when the preference screen is loaded.  The default is `https://3g2upl4pq6kufc4m.onion/html/?q=`
 156         if (torJavaScriptDisabledSearchString.equals("Custom URL")) {
 157             // Use R.string.custom_url, which will be translated, instead of the array value, which will not.
 158             torJavaScriptDisabledSearchPreference.setSummary(R.string.custom_url);
 159         } else {
 160             // Set the array value as the summary text.
 161             torJavaScriptDisabledSearchPreference.setSummary(torJavaScriptDisabledSearchString);
 162         }
 163
 164         // Set the summary text for `tor_javascript_disabled_search_custom_url`.  The default is `""`.
 165         torJavaScriptDisabledSearchCustomURLPreference.setSummary(savedPreferences.getString("tor_javascript_disabled_search_custom_url", ""));
 166
 167
 168         // Set the Tor JavaScript-enabled search URL as the summary text for the Tor Javascript-enabled search preference when the preference screen is loaded.  The default is `https://3g2upl4pq6kufc4m.onion/?q=`.
 169         if (torJavaScriptEnabledSearchString.equals("Custom URL")) {
 170             // Use R.string.custom_url, which will be translated, instead of the array value, which will not.
 171             torJavaScriptEnabledSearchPreference.setSummary(R.string.custom_url);
 172         } else {
 173             // Set the array value as the summary text.
 174             torJavaScriptEnabledSearchPreference.setSummary(torJavaScriptEnabledSearchString);
 175         }
 176
 177         // Set the summary text for `tor_javascript_enabled_search_custom_url`.  The default is `""`.
 178         torJavaScriptEnabledSearchCustomURLPreference.setSummary(savedPreferences.getString("tor_javascript_enabled_search_custom_url", ""));
 179
 180
 181         // Enable the Tor preferences only if `proxy_through_orbot` is enabled.  The default is `false`.
 182         torHomepagePreference.setEnabled(proxyThroughOrbot);
 183         torJavaScriptDisabledSearchPreference.setEnabled(proxyThroughOrbot);
 184         torJavaScriptEnabledSearchPreference.setEnabled(proxyThroughOrbot);
 185
 186         // Enable the Tor custom URL search options only if `proxyThroughOrbot` is true and the search is set to `Custom URL`.
 187         torJavaScriptDisabledSearchCustomURLPreference.setEnabled(proxyThroughOrbot && torJavaScriptDisabledSearchString.equals("Custom URL"));
 188         torJavaScriptEnabledSearchCustomURLPreference.setEnabled(proxyThroughOrbot && torJavaScriptEnabledSearchString.equals("Custom URL"));
 189
 190
 191         // Set the homepage URL as the summary text for the `Homepage` preference when the preference screen is loaded.  The default is `https://www.duckduckgo.com`.
 192         homepagePreference.setSummary(savedPreferences.getString("homepage", "https://www.duckduckgo.com"));
 193
 194         // Set the default font size as the summary text for the `Default Font Size` preference when the preference screen is loaded.  The default is `100`.
 195         defaultFontSizePreference.setSummary(defaultFontSizeString + "%%");
 196
 197
 198         // Listen for preference changes.
 199         preferencesListener = new SharedPreferences.OnSharedPreferenceChangeListener() {
 200             @Override
 201             // Remove Android Studio's warning about the dangers of using SetJavaScriptEnabled.  We know.
 202             @SuppressLint("SetJavaScriptEnabled")
 203             public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
 204
 205                 switch (key) {
 206                     case "javascript_enabled":
 207                         // Toggle the state of the `dom_storage_enabled` preference.  The default is `false`.
 208                         final Preference domStorageEnabled = findPreference("dom_storage_enabled");
 209                         domStorageEnabled.setEnabled(sharedPreferences.getBoolean("javascript_enabled", false));
 210                         break;
 211
 212                     case "first_party_cookies_enabled":
 213                         // Toggle the state of the `third_party_cookies_enabled` preference.  The default is `false`.
 214                         final Preference thirdPartyCookiesEnabled = findPreference("third_party_cookies_enabled");
 215                         thirdPartyCookiesEnabled.setEnabled(sharedPreferences.getBoolean("first_party_cookies_enabled", false));
 216                         break;
 217
 218                     case "user_agent":
 219                         String userAgentString = sharedPreferences.getString("user_agent", "PrivacyBrowser/1.0");
 220
 221                         switch (userAgentString) {
 222                             case "Default user agent":
 223                                 // Display the user agent as the summary text for `userAgentPreference`, and disable `customUserAgent`.
 224                                 userAgentPreference.setSummary(bareWebView.getSettings().getUserAgentString());
 225                                 customUserAgent.setEnabled(false);
 226                                 break;
 227
 228                             case "Custom user agent":
 229                                 // Display "Custom user agent" as the summary text for userAgentPreference, and enable customUserAgent.
 230                                 userAgentPreference.setSummary(R.string.custom_user_agent);
 231                                 customUserAgent.setEnabled(true);
 232                                 break;
 233
 234                             default:
 235                                 // Display the user agent as the summary text for userAgentPreference, and disable customUserAgent.
 236                                 userAgentPreference.setSummary(sharedPreferences.getString("user_agent", "PrivacyBrowser/1.0"));
 237                                 customUserAgent.setEnabled(false);
 238                                 break;
 239                         }
 240                         break;
 241
 242                     case "custom_user_agent":
 243                         // Set the new custom user agent as the summary text for `custom_user_agent`.  The default is `PrivacyBrowser/1.0`.
 244                         customUserAgent.setSummary(sharedPreferences.getString("custom_user_agent", "PrivacyBrowser/1.0"));
 245                         break;
 246
 247                     case "javascript_disabled_search":
 248                         String newJavaScriptDisabledSearchString = sharedPreferences.getString("javascript_disabled_search", "https://duckduckgo.com/html/?q=");
 249                         if (newJavaScriptDisabledSearchString.equals("Custom URL")) {  // Set the summary text to `R.string.custom_url`, which is translated.
 250                             javaScriptDisabledSearchPreference.setSummary(R.string.custom_url);
 251                         } else {  // Set the new search URL as the summary text for the JavaScript-disabled search preference.
 252                             javaScriptDisabledSearchPreference.setSummary(newJavaScriptDisabledSearchString);
 253                         }
 254
 255                         // Enable or disable javaScriptDisabledSearchCustomURLPreference.
 256                         javaScriptDisabledSearchCustomURLPreference.setEnabled(newJavaScriptDisabledSearchString.equals("Custom URL"));
 257                         break;
 258
 259                     case "javascript_disabled_search_custom_url":
 260                         // Set the new custom search URL as the summary text for `javascript_disabled_search_custom_url`.  The default is `""`.
 261                         javaScriptDisabledSearchCustomURLPreference.setSummary(sharedPreferences.getString("javascript_disabled_search_custom_url", ""));
 262                         break;
 263
 264                     case "javascript_enabled_search":
 265                         String newJavaScriptEnabledSearchString = sharedPreferences.getString("javascript_enabled_search", "https://duckduckgo.com/?q=");
 266                         if (newJavaScriptEnabledSearchString.equals("Custom URL")) {  // Set the summary text to `R.string.custom_url`, which is translated.
 267                             javaScriptEnabledSearchPreference.setSummary(R.string.custom_url);
 268                         } else {  // Set the new search URL as the summary text for the JavaScript-enabled search preference..
 269                             javaScriptEnabledSearchPreference.setSummary(newJavaScriptEnabledSearchString);
 270                         }
 271
 272                         // Enable or disable javaScriptEnabledSearchCustomURLPreference.
 273                         javaScriptEnabledSearchCustomURLPreference.setEnabled(newJavaScriptEnabledSearchString.equals("Custom URL"));
 274                         break;
 275
 276                     case "javascript_enabled_search_custom_url":
 277                         // Set the new custom search URL as the summary text for `javascript_enabled_search_custom_url`.  The default is `""`.
 278                         javaScriptEnabledSearchCustomURLPreference.setSummary(sharedPreferences.getString("javascript_enabled_search_custom_url", ""));
 279                         break;
 280
 281                     case "enable_full_screen_browsing_mode":
 282                         boolean newFullScreenBrowsingModeEnabled = sharedPreferences.getBoolean("enable_full_screen_browsing_mode", false);
 283                         if (newFullScreenBrowsingModeEnabled) {
 284                             // Enable `hideSystemBarsPreference`.
 285                             hideSystemBarsPreference.setEnabled(true);
 286
 287                             // Only enable `transparent_navigation_bar` if `hide_system_bars` is `false`.
 288                             translucentNavigationBarPreference.setEnabled(!sharedPreferences.getBoolean("hide_system_bars", false));
 289                         } else {
 290                             // Disable the full screen options.
 291                             hideSystemBarsPreference.setEnabled(false);
 292                             translucentNavigationBarPreference.setEnabled(false);
 293                         }
 294                         break;
 295
 296                     case "proxy_through_orbot":
 297                         // Get current settings.
 298                         boolean currentProxyThroughOrbot = sharedPreferences.getBoolean("proxy_through_orbot", false);
 299                         String currentTorJavaScriptDisabledSearchString = sharedPreferences.getString("tor_javascript_disabled_search", "https://3g2upl4pq6kufc4m.onion/html/?q=");
 300                         String currentTorJavaScriptEnabledSearchString = sharedPreferences.getString("tor_javascript_enabled_search", "https://3g2upl4pq6kufc4m.onion/?q=");
 301
 302                         // Enable the Tor preferences only if `proxy_through_orbot` is enabled.  The default is `false`.
 303                         torHomepagePreference.setEnabled(currentProxyThroughOrbot);
 304                         torJavaScriptDisabledSearchPreference.setEnabled(currentProxyThroughOrbot);
 305                         torJavaScriptEnabledSearchPreference.setEnabled(currentProxyThroughOrbot);
 306
 307                         // Enable the Tor custom URL search options only if `currentProxyThroughOrbot` is true and the search is set to `Custom URL`.
 308                         torJavaScriptDisabledSearchCustomURLPreference.setEnabled(currentProxyThroughOrbot && currentTorJavaScriptDisabledSearchString.equals("Custom URL"));
 309                         torJavaScriptEnabledSearchCustomURLPreference.setEnabled(currentProxyThroughOrbot && currentTorJavaScriptEnabledSearchString.equals("Custom URL"));
 310                         break;
 311
 312                     case "tor_homepage":
 313                         // Set the new tor homepage URL as the summary text for the `tor_homepage` preference.  The default is DuckDuckGo:  `https://3g2upl4pq6kufc4m.onion`.
 314                         torHomepagePreference.setSummary(sharedPreferences.getString("tor_homepage", "https://3g2upl4pq6kufc4m.onion"));
 315                         break;
 316
 317                     case "tor_javascript_disabled_search":
 318                         // Get the present search string.
 319                         String presentTorJavaScriptDisabledSearchString = sharedPreferences.getString("tor_javascript_disabled_search", "https://3g2upl4pq6kufc4m.onion/html/?q=");
 320
 321                         // Set the summary text for `tor_javascript_disabled_search`.
 322                         if (presentTorJavaScriptDisabledSearchString.equals("Custom URL")) {
 323                             // Use R.string.custom_url, which is translated, instead of the array value, which isn't.
 324                             torJavaScriptDisabledSearchPreference.setSummary(R.string.custom_url);
 325                         } else {
 326                             // Set the array value as the summary text.
 327                             torJavaScriptDisabledSearchPreference.setSummary(presentTorJavaScriptDisabledSearchString);
 328                         }
 329
 330                         // Set the status of `torJavaScriptDisabledSearchCustomURLPreference`.
 331                         torJavaScriptDisabledSearchCustomURLPreference.setEnabled(presentTorJavaScriptDisabledSearchString.equals("Custom URL"));
 332                         break;
 333
 334                     case "tor_javascript_disabled_search_custom_url":
 335                         // Set the summary text for `tor_javascript_disabled_search_custom_url`.
 336                         torJavaScriptDisabledSearchCustomURLPreference.setSummary(sharedPreferences.getString("tor_javascript_disabled_search_custom_url", ""));
 337                         break;
 338
 339                     case "tor_javascript_enabled_search":
 340                         // Get the present search string.
 341                         String presentTorJavaScriptEnabledSearchString = sharedPreferences.getString("tor_javascript_enabled_search", "https://3g2upl4pq6kufc4m.onion/?q=");
 342
 343                         // Set the summary text for `tor_javascript_enabled_search`.
 344                         if (presentTorJavaScriptEnabledSearchString.equals("Custom URL")) {
 345                             // Use R.string.custom_url, which is translated, instead of the array value, which isn't.
 346                             torJavaScriptEnabledSearchPreference.setSummary(R.string.custom_url);
 347                         } else {
 348                             // Set the array value as the summary text.
 349                             torJavaScriptEnabledSearchPreference.setSummary(presentTorJavaScriptEnabledSearchString);
 350                         }
 351
 352                         // Set the status of `torJavaScriptEnabledSearchCustomURLPreference`.
 353                         torJavaScriptEnabledSearchCustomURLPreference.setEnabled(presentTorJavaScriptEnabledSearchString.equals("Custom URL"));
 354                         break;
 355
 356                     case "tor_javascript_enabled_search_custom_url":
 357                         // Set the summary text for `tor_javascript_enabled_search_custom_url`.
 358                         torJavaScriptEnabledSearchCustomURLPreference.setSummary(sharedPreferences.getString("tor_javascript_enabled_search_custom_url", ""));
 359                         break;
 360
 361                     case "homepage":
 362                         // Set the new homepage URL as the summary text for the Homepage preference.  The default is `https://www.duckduckgo.com`.
 363                         homepagePreference.setSummary(sharedPreferences.getString("homepage", "https://www.duckduckgo.com"));
 364                         break;
 365
 366                     case "default_font_size":
 367                         // Get the default font size as a string.  The default is `100`.
 368                         String newDefaultFontSizeString = sharedPreferences.getString("default_font_size", "100");
 369
 370                         // Update the summary text of `default_font_size`.
 371                         defaultFontSizePreference.setSummary(newDefaultFontSizeString + "%%");
 372                         break;
 373
 374                     case "hide_system_bars":
 375                         // Enable `translucentNavigationBarPreference` if `hide_system_bars` is disabled.
 376                         translucentNavigationBarPreference.setEnabled(!sharedPreferences.getBoolean("hide_system_bars", false));
 377                         break;
 378
 379                     default:
 380                         // If no match, do nothing.
 381                         break;
 382                 }
 383             }
 384         };
 385
 386         // Register the listener.
 387         savedPreferences.registerOnSharedPreferenceChangeListener(preferencesListener);
 388     }
 389
 390     // It is necessary to re-register the listener on every resume or it will randomly stop working because apps can be paused and resumed at any time
 391     // even while running in the foreground.
 392     @Override
 393     public void onPause() {
 394         super.onPause();
 395         savedPreferences.unregisterOnSharedPreferenceChangeListener(preferencesListener);
 396     }
 397
 398     @Override
 399     public void onResume() {
 400         super.onResume();
 401         savedPreferences.registerOnSharedPreferenceChangeListener(preferencesListener);
 402     }
 403 }