Acknowledgments T hank you to Stephanie McComb, Acquisitions Editor at Wiley, for entrusting yet another edition of this book to me. This marks the fourth project we have worked on together, and I look forward to many more to come. Thank you also to my fantastic agent Margot Hutchison for handling all of the business details so that I don't have to. Thank you to Chris Pichereau, David Sechrist, Debbie Abshier, and all of the others at Abshier House for their hard work shepherding this project along, keeping me on track, and making sure my English makes sense. Thank you to Phil Nickinson, who once again agreed to be my tech editor. Phil is the edi- tor of AndroidCentral.com, one of the foremost experts on all things Android, and a great cousin. Neither this or the prior version would have been possible without him. Finally, thank you to Kelley, Jessica, and Xander. I love you all.