Trying to learn Android, but frustrated by the lack of tutorials showing production ready code? This book walks you through writing a calculator application with tests from line 1.
This book, along with the Android Theory Book, will teach you the basics of Android development so you can start creating high quality applications quickly with high quality.
You can use this as a standalone book or pair with the theory book (recommended for beginners): https://gumroad.com/l/androidtheorybook
Purchase this beta version and you will get free updates.