This book is aimed at developers with existing Android experience, and with the goal to ‘push the limits’, i.e. tackle a number of advanced topics.
It does cover a wide range of topics, and has many interesting illustrative code fragments, plus an accompanying website where code can be downloaded (although the author suggests that you type the code in as an exercise in learning how it works). For example, some of the topics considered in the 20 chapters (400 pages):
• Low-level (JNI,NDK,USB,hardware unlocking,custom firmware) • Networks (Bluetooth LE, HTTP, WiFi,websockets) • Security • Multimedia (UI, touch, OpenGL/ES) • JSON and DB data representation • Tools: ADB, test-driven development, deployment on Google Play
The span of topics is actually too wide to give any of the topics a fair go, and a subset of these (for example considering various communications and remote access facilities) could make a substantial book. The capabilities of mobile operating systems are broad enough now to allow for specialization, so it seems quite legitimate, for example, for UI and DB, or communications and deployment to be a focus in their own right.
However, the book gives an idea of what Android is capable of, so a read through might be useful for many to introduce topics that could be explored in more detail using online resources. I appreciated the up-to-date nature of the book; for example Bluetooth Low Energy is something really only becoming available now. As a reference book for ideas, then, I think this book makes sense and is a worthy addition for an Android devs’ library.
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