目前网上一些退出android程序的方法，比如故意制造异常退出，System.exit(0)等方法，都不能很好的顺利解决问题。而本文档含有流行的Android经典完美退出方法的源码和使用说明，安全稳定无副作用-Online withdraw from the android program, such as the deliberate creation of abnormal exit, the System.exit (0) method are not very good smooth solve the problem. This document contains the source code and instructions for use of the popular Android classic perfect exit, security and stability without side effects