@Override
 long intervalMillis() {
   try {
     return SECONDS.toMillis(
         preferences.getIntegerFromString(R.string.gtasks_GPr_interval_key, 0));
   } catch (Exception e) {
     log.error(e.getMessage(), e);
     preferences.setString(R.string.gtasks_GPr_interval_key, "0");
     return 0;
   }
 }