(On the basis of the previous version, the Google Android SDK Development Paradigm (Version 3) takes the development of Android mobile phone user programs (Android SDK 2.3.3) as the theme, surpasses more than 200 models, and integrates mobile phones, networks, services and other development fields in any depth, providing great help for readers to improve their program design ability. The book is divided into 11 chapters. It mainly describes the knowledge points of Android in the way of a model set. It specifically introduces the development of Android's human-computer interaction interface, commonly used development controls, communication services such as sending and receiving messages on Android phones, the development of automatic service functions and entertainment multimedia functions on Android phones, and the integration of Android and Google's powerful network services. All typical program codes are included in the CD attached with the book. The Google Android SDK Development Paradigm Collection (Version 3) inherits the approach of the previous two editions from the simple to the deep. The total number of paradigms has increased from more than 160 to more than 200. Corresponding paradigms have been added to introduce new development technologies in user interaction interfaces, mobile phone controls, interactive communication services, mobile self-service, entertainment and multimedia. In particular, Chapter 11 has been added to specifically introduce the use of HTML5 technology in Android mobile devices, It is believed that the convergence of the two hot technologies will produce different sparks. The Google Android SDK Development Model (Version 3) is a clear framework and concise language, which is suitable for Android beginners and advanced program developers to read. This document includes the following annexes:)