Android Utililty Methods Hex String to Byte Array Convert

List of utility methods to do Hex String to Byte Array Convert

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Description

The list of methods to do Hex String to Byte Array Convert are organized into topic(s).

Method

byte[]hexStr2ByteArr(String str)
hex Str Byte Arr 
byte[] arrB = str.getBytes();
int iLen = arrB.length;
byte[] arrOut = new byte[iLen / 2];
for (int i = 0; i < iLen; i = i + 2) {
    String strTmp = new String(arrB, i, 2);
    arrOut[i / 2] = (byte) Integer.parseInt(strTmp, 16);
return arrOut;
...
byte[]hexStr2Bytes(String src)
hex Str Bytes 
int m = 0, n = 0;
int l = src.length() / 2;
System.out.println(l);
byte[] ret = new byte[l];
for (int i = 0; i < l; i++) {
    m = i * 2 + 1;
    n = m + 1;
    ret[i] = uniteBytes(src.substring(i * 2, m),
...
StringhexStr2Str(String hexStr)
hex Str Str 
String str = "0123456789ABCDEF";
char[] hexs = hexStr.toCharArray();
byte[] bytes = new byte[hexStr.length() / 2];
int n;
for (int i = 0; i < bytes.length; i++) {
    n = str.indexOf(hexs[2 * i]) * 16;
    n += str.indexOf(hexs[2 * i + 1]);
    bytes[i] = (byte) (n & 0xff);
...
byte[]toByte(String hexString)
to Byte 
int len = hexString.length() / 2;
byte[] result = new byte[len];
for (int i = 0; i < len; i++)
    result[i] = Integer.valueOf(
            hexString.substring(2 * i, 2 * i + 2), 16).byteValue();
return result;
byte[]toBytesFromHexString(String digits)
to Bytes From Hex String 
if (digits == null) {
    return null;
int length = digits.length();
if (length % 2 == 1) {
    throw new IllegalArgumentException("For input string: \""
            + digits + "\"");
length = length / 2;
byte[] bytes = new byte[length];
for (int i = 0; i < length; i++) {
    int index = i * 2;
    bytes[i] = (byte) (Short.parseShort(
            digits.substring(index, index + 2), 16));
return bytes;
byte[]hexStringToBytes(String s)
hex String To Bytes 
if (s == null || s.length() == 0)
    return null;
int len = s.length();
if (len % 2 != 0) {
    s = '0' + s;
    len++;
byte[] data = new byte[len / 2];
...
byte[]hexStringToBytes(String s)
Converts a hex String to a byte array. 
byte[] ret;
if (s == null)
    return null;
int sz = s.length();
ret = new byte[sz / 2];
for (int i = 0; i < sz; i += 2) {
    ret[i / 2] = (byte) ((hexCharToInt(s.charAt(i)) << 4) | hexCharToInt(s
            .charAt(i + 1)));
...
byte[]decodeHex(String str)
decode Hex 
str = str.toLowerCase(Locale.US);
int len = str.length();
byte[] data = new byte[len / 2];
for (int i = 0; i < len; i += 2) {
    data[i / 2] = (byte) ((Character.digit(str.charAt(i), 16) << 4) + Character
            .digit(str.charAt(i + 1), 16));
return data;
...
StringfromHex(String hex)
from Hex 
return new String(toByte(hex));
byte[]hexStringToByteArray(String s)
hex String To Byte Array 
int len = s.length();
byte[] ba = new byte[len / 2];
for (int i = 0; i < ba.length; i++) {
    int j = i * 2;
    int t = Integer.parseInt(s.substring(j, j + 2), 16);
    byte b = (byte) (t & 0xFF);
    ba[i] = b;
return ba;