说明：  Android开发指南中文版 本文是对Android SDK1.5版的英文开发资料Android Development Guide一文应用程序框架部分的翻译，覆盖了Android应用开发所有主要的概念。部分内容整理自网络
(Android development guide Chinese version This paper is on the Android SDK1.5 version of the English development data of Android Development Guide a paper application framework part translation, covering all the major concepts of Android application development. Arrange partial content from the network)