안드로이드 HEX->BYTE->HEX

// hex to byte[] public static byte[] hexToByteArray(String hex) { if (hex == null || hex.length() == 0) return null; byte[] ba = new byte[hex.length() / 2]; for (int i = 0; i < ba.length; i++) ba[i] = (byte) Integer.parseInt(hex.substring(2 * i, 2 * i + 2), 16); return ba; } // byte[] to hex public static String byteArrayToHex(byte[] ba) { if (ba == null || ba.length == 0) return null; StringBuffer sb = new StringBuffer(ba.length * 2); String hexNumber; for (int x = 0; x < ba.length; x++) { hexNumber = "0" + Integer.toHexString(0xff & ba[x]); sb.append(hexNumber.substring(hexNumber.length() - 2)); } return sb.toString(); }