Android Utililty Methods String to Byte Array Convert

char[] chars = s.toCharArray();
int size = chars.length;
byte[] bytes = new byte[size];
for (int i = 0; i < size;)
    bytes[i] = (byte) chars[i++];
return bytes;

return getBytes(data, "GBK");

Charset charset = Charset.forName(charsetName);
return data.getBytes(charset);

int i, j = 0;
byte[] output = new byte[BD_ADDR_LEN];
if (address != null) {
    for (i = 0; i < address.length(); i++) {
        if (address.charAt(i) != ':') {
            output[j] = (byte) Integer.parseInt(
                    address.substring(i, i + 2), 16);
            j++;
...

StringTokenizer tokenizer = new StringTokenizer(string, ",");
byte[] bytes = new byte[tokenizer.countTokens()];
for (int k = 0; k < bytes.length; k++)
    bytes[k] = (byte) Integer.parseInt(tokenizer.nextToken());
return bytes;

if (hexString.length() % 2 == 1)
    return null;
byte[] ret = new byte[hexString.length() / 2];
for (int i = 0; i < hexString.length(); i += 2) {
    ret[i / 2] = Integer.decode(
            "0x" + hexString.substring(i, i + 2)).byteValue();
return ret;
...

if (input == null || input.equals(""))
    return new byte[] {};
else
    return input.getBytes(Charset.forName("utf-8"));

if (s.length() % 2 != 0) {
    s = "0" + s;
ByteArrayOutputStream baos = new ByteArrayOutputStream();
char[] c = s.toCharArray();
for (int i = 0; i < c.length; i += 2) {
    int high = c[i] - 48;
    int low = c[i + 1] - 48;
...

int len = asc.length();
int mod = len % 2;
if (mod != 0) {
    asc = "0" + asc;
    len = asc.length();
byte abt[] = new byte[len];
if (len >= 2) {
...

if (digits == null) {
    return null;
if (radix != 16 && radix != 10 && radix != 8) {
    throw new IllegalArgumentException("For input radix: \""
            + radix + "\"");
int divLen = (radix == 16) ? 2 : 3;
...