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 to inflated a `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.  `false` does not attach the view to the root.
  85         @SuppressLint("InflateParams") View bareWebViewLayout = inflater.inflate(R.layout.bare_webview, null, false);
  86         final WebView bareWebView = (WebView) bareWebViewLayout.findViewById(R.id.bare_webview);
  87
  88         // Set the current user-agent as the summary text for the "user_agent" preference when the preference screen is loaded.
  89         switch (savedPreferences.getString("user_agent", "PrivacyBrowser/1.0")) {
  90             case "WebView default user agent":
  91                 // Get the user agent text from the webview (which changes based on the version of Android and WebView installed).
  92                 userAgentPreference.setSummary(bareWebView.getSettings().getUserAgentString());
  93                 break;
  94
  95             case "Custom user agent":
  96                 // We can't use the string from the array because it is referenced in code and can't be translated.
  97                 userAgentPreference.setSummary(R.string.custom_user_agent);
  98                 break;
  99
 100             default:
 101                 // Display the user agent from the preference as the summary text.
 102                 userAgentPreference.setSummary(savedPreferences.getString("user_agent", "PrivacyBrowser/1.0"));
 103                 break;
 104         }
 105
 106         // 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".
 107         customUserAgent.setSummary(savedPreferences.getString("custom_user_agent", "PrivacyBrowser/1.0"));
 108         customUserAgent.setEnabled(userAgentPreference.getSummary().equals("Custom user agent"));
 109
 110
 111         // 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=`.
 112         if (javaScriptDisabledSearchString.equals("Custom URL")) {
 113             // Use R.string.custom_url, which will be translated, instead of the array value, which will not.
 114             javaScriptDisabledSearchPreference.setSummary(R.string.custom_url);
 115         } else {
 116             // Set the array value as the summary text.
 117             javaScriptDisabledSearchPreference.setSummary(javaScriptDisabledSearchString);
 118         }
 119
 120         // 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`.
 121         javaScriptDisabledSearchCustomURLPreference.setSummary(savedPreferences.getString("javascript_disabled_search_custom_url", ""));
 122         javaScriptDisabledSearchCustomURLPreference.setEnabled(javaScriptDisabledSearchString.equals("Custom URL"));
 123
 124
 125         // 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=`.
 126         if (javaScriptEnabledSearchString.equals("Custom URL")) {
 127             // If set to "Custom URL", use R.string.custom_url, which will be translated, instead of the array value, which will not.
 128             javaScriptEnabledSearchPreference.setSummary(R.string.custom_url);
 129         } else {
 130             // Set the array value as the summary text.
 131             javaScriptEnabledSearchPreference.setSummary(javaScriptEnabledSearchString);
 132         }
 133
 134         // 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`.
 135         javaScriptEnabledSearchCustomURLPreference.setSummary(savedPreferences.getString("javascript_enabled_search_custom_url", ""));
 136         javaScriptEnabledSearchCustomURLPreference.setEnabled(javaScriptEnabledSearchString.equals("Custom URL"));
 137
 138
 139         // Enable the full screen options if full screen browsing mode is enabled.
 140         if (!fullScreenBrowsingModeEnabled) {
 141             // Disable the full screen options.
 142             hideSystemBarsPreference.setEnabled(false);
 143             translucentNavigationBarPreference.setEnabled(false);
 144         } else {
 145             // Disable `transparent_navigation_bar` if `hide_system_bars` is `true`.
 146             translucentNavigationBarPreference.setEnabled(!savedPreferences.getBoolean("hide_system_bars", false));
 147         }
 148
 149
 150         // 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`.
 151         torHomepagePreference.setSummary(savedPreferences.getString("tor_homepage", "https://3g2upl4pq6kufc4m.onion"));
 152
 153
 154         // 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=`
 155         if (torJavaScriptDisabledSearchString.equals("Custom URL")) {
 156             // Use R.string.custom_url, which will be translated, instead of the array value, which will not.
 157             torJavaScriptDisabledSearchPreference.setSummary(R.string.custom_url);
 158         } else {
 159             // Set the array value as the summary text.
 160             torJavaScriptDisabledSearchPreference.setSummary(torJavaScriptDisabledSearchString);
 161         }
 162
 163         // Set the summary text for `tor_javascript_disabled_search_custom_url`.  The default is `""`.
 164         torJavaScriptDisabledSearchCustomURLPreference.setSummary(savedPreferences.getString("tor_javascript_disabled_search_custom_url", ""));
 165
 166
 167         // 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=`.
 168         if (torJavaScriptEnabledSearchString.equals("Custom URL")) {
 169             // Use R.string.custom_url, which will be translated, instead of the array value, which will not.
 170             torJavaScriptEnabledSearchPreference.setSummary(R.string.custom_url);
 171         } else {
 172             // Set the array value as the summary text.
 173             torJavaScriptEnabledSearchPreference.setSummary(torJavaScriptEnabledSearchString);
 174         }
 175
 176         // Set the summary text for `tor_javascript_enabled_search_custom_url`.  The default is `""`.
 177         torJavaScriptEnabledSearchCustomURLPreference.setSummary(savedPreferences.getString("tor_javascript_enabled_search_custom_url", ""));
 178
 179
 180         // Enable the Tor preferences only if `proxy_through_orbot` is enabled.  The default is `false`.
 181         torHomepagePreference.setEnabled(proxyThroughOrbot);
 182         torJavaScriptDisabledSearchPreference.setEnabled(proxyThroughOrbot);
 183         torJavaScriptEnabledSearchPreference.setEnabled(proxyThroughOrbot);
 184
 185         // Enable the Tor custom URL search options only if `proxyThroughOrbot` is true and the search is set to `Custom URL`.
 186         torJavaScriptDisabledSearchCustomURLPreference.setEnabled(proxyThroughOrbot && torJavaScriptDisabledSearchString.equals("Custom URL"));
 187         torJavaScriptEnabledSearchCustomURLPreference.setEnabled(proxyThroughOrbot && torJavaScriptEnabledSearchString.equals("Custom URL"));
 188
 189
 190         // 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`.
 191         homepagePreference.setSummary(savedPreferences.getString("homepage", "https://www.duckduckgo.com"));
 192
 193         // 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`.
 194         defaultFontSizePreference.setSummary(defaultFontSizeString + "%%");
 195
 196
 197         // Listen for preference changes.
 198         preferencesListener = new SharedPreferences.OnSharedPreferenceChangeListener() {
 199             @Override
 200             // Remove Android Studio's warning about the dangers of using SetJavaScriptEnabled.  We know.
 201             @SuppressLint("SetJavaScriptEnabled")
 202             public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
 203
 204                 switch (key) {
 205                     case "javascript_enabled":
 206                         // Toggle the state of the `dom_storage_enabled` preference.  The default is `false`.
 207                         final Preference domStorageEnabled = findPreference("dom_storage_enabled");
 208                         domStorageEnabled.setEnabled(sharedPreferences.getBoolean("javascript_enabled", false));
 209                         break;
 210
 211                     case "first_party_cookies_enabled":
 212                         // Toggle the state of the `third_party_cookies_enabled` preference.  The default is `false`.
 213                         final Preference thirdPartyCookiesEnabled = findPreference("third_party_cookies_enabled");
 214                         thirdPartyCookiesEnabled.setEnabled(sharedPreferences.getBoolean("first_party_cookies_enabled", false));
 215                         break;
 216
 217                     case "user_agent":
 218                         String userAgentString = sharedPreferences.getString("user_agent", "PrivacyBrowser/1.0");
 219
 220                         switch (userAgentString) {
 221                             case "WebView default user agent":
 222                                 // Display the user agent as the summary text for `userAgentPreference`, and disable `customUserAgent`.
 223                                 userAgentPreference.setSummary(bareWebView.getSettings().getUserAgentString());
 224                                 customUserAgent.setEnabled(false);
 225                                 break;
 226
 227                             case "Custom user agent":
 228                                 // Display "Custom user agent" as the summary text for userAgentPreference, and enable customUserAgent.
 229                                 userAgentPreference.setSummary(R.string.custom_user_agent);
 230                                 customUserAgent.setEnabled(true);
 231                                 break;
 232
 233                             default:
 234                                 // Display the user agent as the summary text for userAgentPreference, and disable customUserAgent.
 235                                 userAgentPreference.setSummary(sharedPreferences.getString("user_agent", "PrivacyBrowser/1.0"));
 236                                 customUserAgent.setEnabled(false);
 237                                 break;
 238                         }
 239                         break;
 240
 241                     case "custom_user_agent":
 242                         // Set the new custom user agent as the summary text for `custom_user_agent`.  The default is `PrivacyBrowser/1.0`.
 243                         customUserAgent.setSummary(sharedPreferences.getString("custom_user_agent", "PrivacyBrowser/1.0"));
 244                         break;
 245
 246                     case "javascript_disabled_search":
 247                         String newJavaScriptDisabledSearchString = sharedPreferences.getString("javascript_disabled_search", "https://duckduckgo.com/html/?q=");
 248                         if (newJavaScriptDisabledSearchString.equals("Custom URL")) {  // Set the summary text to `R.string.custom_url`, which is translated.
 249                             javaScriptDisabledSearchPreference.setSummary(R.string.custom_url);
 250                         } else {  // Set the new search URL as the summary text for the JavaScript-disabled search preference.
 251                             javaScriptDisabledSearchPreference.setSummary(newJavaScriptDisabledSearchString);
 252                         }
 253
 254                         // Enable or disable javaScriptDisabledSearchCustomURLPreference.
 255                         javaScriptDisabledSearchCustomURLPreference.setEnabled(newJavaScriptDisabledSearchString.equals("Custom URL"));
 256                         break;
 257
 258                     case "javascript_disabled_search_custom_url":
 259                         // Set the new custom search URL as the summary text for `javascript_disabled_search_custom_url`.  The default is `""`.
 260                         javaScriptDisabledSearchCustomURLPreference.setSummary(sharedPreferences.getString("javascript_disabled_search_custom_url", ""));
 261                         break;
 262
 263                     case "javascript_enabled_search":
 264                         String newJavaScriptEnabledSearchString = sharedPreferences.getString("javascript_enabled_search", "https://duckduckgo.com/?q=");
 265                         if (newJavaScriptEnabledSearchString.equals("Custom URL")) {  // Set the summary text to `R.string.custom_url`, which is translated.
 266                             javaScriptEnabledSearchPreference.setSummary(R.string.custom_url);
 267                         } else {  // Set the new search URL as the summary text for the JavaScript-enabled search preference..
 268                             javaScriptEnabledSearchPreference.setSummary(newJavaScriptEnabledSearchString);
 269                         }
 270
 271                         // Enable or disable javaScriptEnabledSearchCustomURLPreference.
 272                         javaScriptEnabledSearchCustomURLPreference.setEnabled(newJavaScriptEnabledSearchString.equals("Custom URL"));
 273                         break;
 274
 275                     case "javascript_enabled_search_custom_url":
 276                         // Set the new custom search URL as the summary text for `javascript_enabled_search_custom_url`.  The default is `""`.
 277                         javaScriptEnabledSearchCustomURLPreference.setSummary(sharedPreferences.getString("javascript_enabled_search_custom_url", ""));
 278                         break;
 279
 280                     case "enable_full_screen_browsing_mode":
 281                         boolean newFullScreenBrowsingModeEnabled = sharedPreferences.getBoolean("enable_full_screen_browsing_mode", false);
 282                         if (newFullScreenBrowsingModeEnabled) {
 283                             // Enable `hideSystemBarsPreference`.
 284                             hideSystemBarsPreference.setEnabled(true);
 285
 286                             // Only enable `transparent_navigation_bar` if `hide_system_bars` is `false`.
 287                             translucentNavigationBarPreference.setEnabled(!sharedPreferences.getBoolean("hide_system_bars", false));
 288                         } else {
 289                             // Disable the full screen options.
 290                             hideSystemBarsPreference.setEnabled(false);
 291                             translucentNavigationBarPreference.setEnabled(false);
 292                         }
 293                         break;
 294
 295                     case "proxy_through_orbot":
 296                         // Get current settings.
 297                         boolean currentProxyThroughOrbot = sharedPreferences.getBoolean("proxy_through_orbot", false);
 298                         String currentTorJavaScriptDisabledSearchString = sharedPreferences.getString("tor_javascript_disabled_search", "https://3g2upl4pq6kufc4m.onion/html/?q=");
 299                         String currentTorJavaScriptEnabledSearchString = sharedPreferences.getString("tor_javascript_enabled_search", "https://3g2upl4pq6kufc4m.onion/?q=");
 300
 301                         // Enable the Tor preferences only if `proxy_through_orbot` is enabled.  The default is `false`.
 302                         torHomepagePreference.setEnabled(currentProxyThroughOrbot);
 303                         torJavaScriptDisabledSearchPreference.setEnabled(currentProxyThroughOrbot);
 304                         torJavaScriptEnabledSearchPreference.setEnabled(currentProxyThroughOrbot);
 305
 306                         // Enable the Tor custom URL search options only if `currentProxyThroughOrbot` is true and the search is set to `Custom URL`.
 307                         torJavaScriptDisabledSearchCustomURLPreference.setEnabled(currentProxyThroughOrbot && currentTorJavaScriptDisabledSearchString.equals("Custom URL"));
 308                         torJavaScriptEnabledSearchCustomURLPreference.setEnabled(currentProxyThroughOrbot && currentTorJavaScriptEnabledSearchString.equals("Custom URL"));
 309                         break;
 310
 311                     case "tor_homepage":
 312                         // Set the new tor homepage URL as the summary text for the `tor_homepage` preference.  The default is DuckDuckGo:  `https://3g2upl4pq6kufc4m.onion`.
 313                         torHomepagePreference.setSummary(sharedPreferences.getString("tor_homepage", "https://3g2upl4pq6kufc4m.onion"));
 314                         break;
 315
 316                     case "tor_javascript_disabled_search":
 317                         // Get the present search string.
 318                         String presentTorJavaScriptDisabledSearchString = sharedPreferences.getString("tor_javascript_disabled_search", "https://3g2upl4pq6kufc4m.onion/html/?q=");
 319
 320                         // Set the summary text for `tor_javascript_disabled_search`.
 321                         if (presentTorJavaScriptDisabledSearchString.equals("Custom URL")) {
 322                             // Use R.string.custom_url, which is translated, instead of the array value, which isn't.
 323                             torJavaScriptDisabledSearchPreference.setSummary(R.string.custom_url);
 324                         } else {
 325                             // Set the array value as the summary text.
 326                             torJavaScriptDisabledSearchPreference.setSummary(presentTorJavaScriptDisabledSearchString);
 327                         }
 328
 329                         // Set the status of `torJavaScriptDisabledSearchCustomURLPreference`.
 330                         torJavaScriptDisabledSearchCustomURLPreference.setEnabled(presentTorJavaScriptDisabledSearchString.equals("Custom URL"));
 331                         break;
 332
 333                     case "tor_javascript_disabled_search_custom_url":
 334                         // Set the summary text for `tor_javascript_disabled_search_custom_url`.
 335                         torJavaScriptDisabledSearchCustomURLPreference.setSummary(sharedPreferences.getString("tor_javascript_disabled_search_custom_url", ""));
 336                         break;
 337
 338                     case "tor_javascript_enabled_search":
 339                         // Get the present search string.
 340                         String presentTorJavaScriptEnabledSearchString = sharedPreferences.getString("tor_javascript_enabled_search", "https://3g2upl4pq6kufc4m.onion/?q=");
 341
 342                         // Set the summary text for `tor_javascript_enabled_search`.
 343                         if (presentTorJavaScriptEnabledSearchString.equals("Custom URL")) {
 344                             // Use R.string.custom_url, which is translated, instead of the array value, which isn't.
 345                             torJavaScriptEnabledSearchPreference.setSummary(R.string.custom_url);
 346                         } else {
 347                             // Set the array value as the summary text.
 348                             torJavaScriptEnabledSearchPreference.setSummary(presentTorJavaScriptEnabledSearchString);
 349                         }
 350
 351                         // Set the status of `torJavaScriptEnabledSearchCustomURLPreference`.
 352                         torJavaScriptEnabledSearchCustomURLPreference.setEnabled(presentTorJavaScriptEnabledSearchString.equals("Custom URL"));
 353                         break;
 354
 355                     case "tor_javascript_enabled_search_custom_url":
 356                         // Set the summary text for `tor_javascript_enabled_search_custom_url`.
 357                         torJavaScriptEnabledSearchCustomURLPreference.setSummary(sharedPreferences.getString("tor_javascript_enabled_search_custom_url", ""));
 358                         break;
 359
 360                     case "homepage":
 361                         // Set the new homepage URL as the summary text for the Homepage preference.  The default is `https://www.duckduckgo.com`.
 362                         homepagePreference.setSummary(sharedPreferences.getString("homepage", "https://www.duckduckgo.com"));
 363                         break;
 364
 365                     case "default_font_size":
 366                         // Get the default font size as a string.  The default is `100`.
 367                         String newDefaultFontSizeString = sharedPreferences.getString("default_font_size", "100");
 368
 369                         // Update the summary text of `default_font_size`.
 370                         defaultFontSizePreference.setSummary(newDefaultFontSizeString + "%%");
 371                         break;
 372
 373                     case "hide_system_bars":
 374                         // Enable `translucentNavigationBarPreference` if `hide_system_bars` is disabled.
 375                         translucentNavigationBarPreference.setEnabled(!sharedPreferences.getBoolean("hide_system_bars", false));
 376                         break;
 377
 378                     default:
 379                         // If no match, do nothing.
 380                         break;
 381                 }
 382             }
 383         };
 384
 385         // Register the listener.
 386         savedPreferences.registerOnSharedPreferenceChangeListener(preferencesListener);
 387     }
 388
 389     // 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
 390     // even while running in the foreground.
 391     @Override
 392     public void onPause() {
 393         super.onPause();
 394         savedPreferences.unregisterOnSharedPreferenceChangeListener(preferencesListener);
 395     }
 396
 397     @Override
 398     public void onResume() {
 399         super.onResume();
 400         savedPreferences.registerOnSharedPreferenceChangeListener(preferencesListener);
 401     }
 402 }