Android Open Source - BLEService U U I D Utils

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Back to project page BLEService.


The source code is released under:

Copyright (c) 2014, Ratio LLC. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: ...

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Java Source Code

package com.ratio.util;
//  www  .ja  va 2  s.  c  o m
import java.util.UUID;

import android.os.Parcel;

// utilities for UUIDs, mostly to read and write to parcels for services.
public class UUIDUtils {
  // if the UUID is null, then we write 0L,0L
  public static void writeToParcel(UUID uuid, Parcel parcel) {
    if (uuid == null) {
    } else {
  // if the uuid is 0L,0L, then we assume that it is null
  public static UUID readFromParcel(Parcel parcel) {
    long lsb = parcel.readLong();
    long msb = parcel.readLong();
    if ((lsb == 0L) && (msb == 0L)) {
      return null;
    } else {
      return new UUID(msb, lsb);
  // turn B6981800756211E2B50D00163E46F8FE into B6981800-7562-11E2-B50D-00163E46F8FE
  public static UUID fromByteArray(byte[] byteArray, int offset) {
    String format = "%s-%s-%s-%s-%s";
    String p1 = StringUtil.toHexCode(byteArray, offset + 0, 4);
    String p2 = StringUtil.toHexCode(byteArray, offset + 4, 2);
    String p3 = StringUtil.toHexCode(byteArray, offset + 6, 2);
    String p4 = StringUtil.toHexCode(byteArray, offset + 8, 2);
    String p5 = StringUtil.toHexCode(byteArray, offset + 10, 6);
    String uuidString = String.format(format, p1, p2, p3, p4, p5);
    return UUID.fromString(uuidString);    

Java Source Code List