public ContentValues generateValuesReminder(Reminder reminder) {
   ContentValues values = new ContentValues();
   values.put(Reminder.ReminderEntry.COLUMN_TITLE, reminder.getTitle());
   values.put(Reminder.ReminderEntry.COLUMN_NOTES, reminder.getNotes());
   values.put(Reminder.ReminderEntry.COLUMN_DATE, reminder.getDateToString());
   values.put(Reminder.ReminderEntry.COLUMN_DAYS_AFTER, reminder.getDaysAfter());
   values.put(Reminder.ReminderEntry.COLUMN_HOUR_RANGE, reminder.getHourRange());
   values.put(Reminder.ReminderEntry.COLUMN_ESTADO, reminder.getState().toString());
   if (reminder.getPhotoPath() != "") {
     values.put(Reminder.ReminderEntry.COLUMN_PHOTO_PATH, reminder.getPhotoPath());
   } else {
     values.putNull(Reminder.ReminderEntry.COLUMN_PHOTO_PATH);
   }
   if (reminder.getVoiceNotePath() != "") {
     values.put(Reminder.ReminderEntry.COLUMN_VOICE_NOTE_PATH, reminder.getVoiceNotePath());
   } else {
     values.putNull(Reminder.ReminderEntry.COLUMN_VOICE_NOTE_PATH);
   }
   return values;
 }