The Busy Coder's Guide to Advanced Android Development
This book picks up where its predecessor left off, covering yet more topics of interest to the professional Android application developer. If you need to create reusable components, create home screen widgets, play back media, take pictures with the camera, or implement sophisticated services, this book will be a helpful guide.
Getting Beyond the Basics
Android is a vast platform, more than one book can reasonably handle. CommonsWare has kept its original book focused on getting basic applications going.
However, slick applications will use more than just the basics. You will want home screen widgets, or good support for tablets, or tight integration with the Quick Search Box, or to expose APIs from your application to third parties. It is those sorts of topics that you will find in this book, and the roster of those topics keeps expanding with every new release.