private String getMatch(String s) {
        for (int i = 0; i < dataList.size(); i++) {
            String s1 = dataList.get(i).toString();
            if (s1 != null) {
                if (!isCaseSensitive
                        && s1.toLowerCase().startsWith(s.toLowerCase())) {
                    return s1;
                }
                if (isCaseSensitive && s1.startsWith(s)) {
                    return s1;
                }
            }
        }

        return null;
    }