Android String 转 MD5

/**

* 将字符串转成16 位MD5值


* 


* @param string


* @return


*/


public static String MD5(String string) {


byte[] hash;


try {


hash = MessageDigest.getInstance("MD5").digest(


string.getBytes("UTF-8"));


} catch (NoSuchAlgorithmException e) {


e.printStackTrace();


return null;


} catch (UnsupportedEncodingException e) {


e.printStackTrace();


return null;


}

StringBuilder hex = new StringBuilder(hash.length * 2);


for (byte b : hash) {


if ((b & 0xFF) < 0x10)


hex.append("0");


hex.append(Integer.toHexString(b & 0xFF));

}

return hex.toString();// 32位

return hex.toString().toString().substring(8, 24);// 16位


}