private void insertServerListToDatabase(List<Server> servers) {
   dataSource.open();
   for (Server server : servers) {
     if (dataSource.createServer(server) == null) {
       Log.e(OTPApp.TAG, "Some server fields are incorrect, server not added");
     }
   }
   dataSource.close();
 }
  private List<Server> getServersFromSQLite() {
    List<Server> servers = new ArrayList<Server>();

    dataSource.open();
    List<Server> values = dataSource.getMostRecentServers();
    String shown = "";
    for (Server s : values) {
      shown += s.getRegion() + s.getDate().toString() + "\n";
      servers.add(new Server(s));
    }
    Log.d(OTPApp.TAG, shown);
    dataSource.close();

    dataSource.open();
    Calendar someDaysBefore = Calendar.getInstance();
    someDaysBefore.add(Calendar.DAY_OF_MONTH, -OTPApp.EXPIRATION_DAYS_FOR_SERVER_LIST);
    Long serversUpdateDate = dataSource.getMostRecentDate();
    if ((serversUpdateDate != null) && (someDaysBefore.getTime().getTime() > serversUpdateDate)) {
      servers = null;
    }
    dataSource.close();
    //		Toast.makeText(activity.getApplicationContext(), shown, Toast.LENGTH_SHORT).show();

    return servers;
  }
 @Override
 public void onServerCheckerComplete(
     String result, boolean isCustomServer, boolean isAutoDetected, boolean isWorking) {
   SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
   SharedPreferences.Editor prefsEditor = prefs.edit();
   if (isCustomServer) {
     if (isWorking) {
       prefsEditor.putBoolean(PREFERENCE_KEY_AUTO_DETECT_SERVER, false);
       prefsEditor.putBoolean(PREFERENCE_KEY_SELECTED_CUSTOM_SERVER, true);
       prefsEditor.putBoolean(PREFERENCE_KEY_CUSTOM_SERVER_URL_IS_VALID, true);
       prefsEditor.commit();
       if (selectedCustomServer) {
         String baseURL = prefs.getString(PREFERENCE_KEY_CUSTOM_SERVER_URL, "");
         selectedServer = new Server(baseURL, context);
         callback.onServerSelectorComplete(selectedServer);
       }
     } else {
       prefsEditor.putBoolean(PREFERENCE_KEY_CUSTOM_SERVER_URL_IS_VALID, false);
       prefsEditor.putBoolean(PREFERENCE_KEY_SELECTED_CUSTOM_SERVER, false);
       prefsEditor.commit();
       Toast.makeText(
               context,
               context.getResources().getString(R.string.toast_server_checker_error_bad_url),
               Toast.LENGTH_SHORT)
           .show();
     }
   } else {
     if (isWorking) {
       if (isAutoDetected) {
         long serverId = prefs.getLong(OTPApp.PREFERENCE_KEY_SELECTED_SERVER, 0);
         Server s = null;
         boolean serverIsChanged = true;
         if (serverId != 0) {
           dataSource.open();
           s = dataSource.getServer(prefs.getLong(OTPApp.PREFERENCE_KEY_SELECTED_SERVER, 0));
           dataSource.close();
         }
         if (s != null) {
           serverIsChanged = !(s.getRegion().equals(selectedServer.getRegion()));
         }
         if (showDialog || serverIsChanged) {
           Toast.makeText(
                   context,
                   context.getResources().getString(R.string.toast_server_selector_detected)
                       + " "
                       + selectedServer.getRegion()
                       + ". "
                       + context
                           .getResources()
                           .getString(R.string.toast_server_selector_server_change_info),
                   Toast.LENGTH_SHORT)
               .show();
         }
       }
       prefsEditor.putLong(PREFERENCE_KEY_SELECTED_SERVER, selectedServer.getId());
       prefsEditor.putBoolean(PREFERENCE_KEY_SELECTED_CUSTOM_SERVER, false);
       prefsEditor.commit();
       callback.onServerSelectorComplete(selectedServer);
     } else {
       Toast.makeText(
               context,
               context
                   .getResources()
                   .getString(R.string.toast_server_checker_error_unreachable_detected_server),
               Toast.LENGTH_SHORT)
           .show();
     }
   }
 }