long dayDifference = DateUtils.daysBetween(new Date(messageList.get(i - 1).getCreatedAtTime()), new Date(messageList.get(i).getCreatedAtTime()));
long dayDifference = DateUtils.daysBetween(new Date(nextMessageList.get(i - 1).getCreatedAtTime()), new Date(nextMessageList.get(i).getCreatedAtTime()));