First: Over 10 years old, so 9.5 years out of date. Android 4.4 here.
Second: Great book. Well organised, great primer to Android structure (which is why I read it), systematic, practical with practical real-world examples. Written by people who do it, every day. I come from a 20-year Linux background, started using Unix in 1987 (yup), studied electronics, and I kinda work in this area in a non-tech capacity. For anyone like me, it's perfectly pitched and easy to read. Not too technical.
I wanted to list this book's good bits, but there are so many. Despite its age, if you are looking for a "introduction to the Android system" then this book is great. Otherwise . . .
. . . otherwise, sorry, but it's soooo old that I couldn't recommend it as any sort of guide to Android hacking. If you've got something written in the last couple of years, use that instead.