作者：华清远见3G学院。第二章、Android基础。《Android多媒体编程从初学到精通》在本章中，将会介绍一些Android的基础知识，如Android的UI框架、启动过程、进程间通信、上下层之间的交互方法，以及Android为了获得更高的速度而在系统性能上所做的优化等，为接下来的章节做好铺垫。-Author: HuaQing vision 3 G institute. The second chapter, Android basis. "The Android multimedia programming from beginners to master" in this chapter, will introduce some basic knowledge of Android, such as Android UI frame, the starting up process, inter-process communication, lower on the interaction between the methods, as well as Android in order to obtain more speed and in the system properties on the optimization, do for the next section of the blackboard.