Android Essentials is a no-frills, no-nonsense, code-centric run through the guts of application development on Google's Mobile OS. This book uses the development of a sample application to work through topics, focusing on giving developers the essential tools and examples required to make viable commercial applications work.
Android Recipes: A Problem-Solution Approach, Second Edition offers more than 100 down-to-earth code recipes, and guides you step-by-step through a wide range of useful topics using complete and real-world working code examples.¬† It's updated to include the Jelly Bean Android SDK as well as earlier releases.
Arduino Internals delivers aspiring Arduino hackers from their dependence on existing Arduino implementations. Along with an¬†incisive analysis of existing Arduino hardware and software, you'll learn how to design your own optimized Arduino hardware, and become a designer of Arduino boards and peripherals.