Android Programming: The Big Nerd Ranch Guide by Bill Phillips, Chris Stewart and Kristin Marsicano Copyright © 2017 Big Nerd Ranch, LLC. All rights reserved. Printed in the United States of America. This publication is protected by copyright, and permission must be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permissions, contact Big Nerd Ranch, LLC. 200 Arizona Ave NE Atlanta, GA 30307 (770) 817-6373 http://www.bignerdranch.com/ book-comments@bignerdranch.com The 10-gallon hat with propeller logo is a trademark of Big Nerd Ranch, Inc. Exclusive worldwide distribution of the English edition of this book by Pearson Technology Group 800 East 96th Street Indianapolis, IN 46240 USA http://www.informit.com The authors and publisher have taken care in writing and printing this book but make no expressed or implied warranty of any kind and assume no responsibility for errors or omissions. No liability is assumed for incidental or consequential damages in connection with or arising out of the use of the information or programs contained herein. Many of the designations used by manufacturers and sellers to distinguish their products are claimed as trademarks. Where those designations appear in this book, and the publisher was aware of a trademark claim, the designations have been printed with initial capital letters or in all capitals. ISBN-10 0134706072 ISBN-13 978-0134706078 Third edition, first printing, February 2017 Release E.3.1.1 Dedication To the record player on my desk. Thanks for keeping me company through all this. I promise I’ll get you a new needle soon. B.P. To my dad, David, for teaching me the value of hard work. To my mom, Lisa, for pushing me to always do the right thing. C.S. To my dad, Dave Vadas, for inspiring and encouraging me to pursue a career in computing.