Objective-C是扩展C的面向对象编程语言，也是iPhone开发用到的主要语言，本书是Object—C中文版-Objective-C is the extended C, object-oriented programming language, but also the main language used by iPhone developers, this book is the Chinese version of the Object-C

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