•Linux Kernel

•Native Libraries

•Android Runtime

•Native Libraries

•Android Runtime

•Application Framework

•Android Physiology

•Start-up Walkthrough

•Layer Interaction

强烈推荐的Android系统机制、框架、架构剖析文档，来自Google I/O，感兴趣的同学请直接下载PDF文档：

Android Anatomy and Physiology