Android 系统启动过程详细剖析，从启动内核、启动服务、到Android UI。

分析Android内核运行机制和原理，更有效的了解和学习Android的运行机制，对于上层的App开发非常有帮助(The analysis of the operating mechanism and principle of the Android kernel, more effective understanding and learning of the running mechanism of Android, is very helpful for the development o