About the Author Bill Phillips, a software engineer and instructor at Big Nerd Ranch, cowrote and taught the original Big Nerd Ranch Android bootcamp, as well as the first edition of this book. Since then he has been teaching, writing blog posts, reading various kinds of literature, writing and playing music, and working on books.Chris Stewart is the director of the Android team at Big Nerd Ranch, where he is also a senior Android bootcamp instructor. He is dedicated to constant improvement and works to perfect his craft as much as possible. When not in front of a computer, Chris enjoys hiking and traveling. Brian Hardy is director of iOS and Cocoa engineering at Big Nerd Ranch. He was one of the first Android bootcamp instructors and has worked with many clients to develop high quality mobile applications for Android and iOS. When not working with his development team to build better software or hacking on his latest pet project, Brian enjoys spending time with friends and family X usually around the grill.Kristin Marsicano is an Android developer and senior instructor at Big Nerd Ranch. Always an educator at heart, she is passionate about learning, software development, and the intersection of the two. When she is not developing apps or sharing her love of Android in the classroom, you can find Kristin cooking for her growing family, doing yoga, or learning something new.