This book is for people coming to Android programming from a variety of backgrounds.

If you have been programming iPhone or Mac OS applications in Objective-C, you will

find coverage of Android tools and Java language features relevant to Android pro-

gramming that will help you bring your knowledge of mobile application development

to Android. If you are an experienced Java coder, you will find coverage of Android

application architecture that will enable you to use your Java expertise in this newly

vibrant world of client Java application development. In short, this is a book for people

with some relevant experience in object-oriented languages, mobile applications, REST

applications, and similar disciplines who want to go further than an introductory book

or online tutorials will take them