用sax方法解析xml文件，url可以随意改写，解析后的数据以systemout打印在logcat中，可通过logcat看到打印的时间。源码中有写测试语句。-sax xml

DDMS 的全称是Dalvik Debug Monitor Service，它为我们提供例如：为测试设备截屏，针对特定的进程查看正在运行的线程以及堆信息、Logcat、广播状态信息、模拟电话呼叫、接收SMS、虚拟地理坐标等等。-The DDMS full name is the Dalvik Debug Monitor Service, it provides us with such as: test equipment, screen shots, view the running thre

描述android 中activity 生命周期的简单程序。模拟器中看不到结果，需要在LogCat中查看回调函数执行情况。-Describe the android activity life cycle in a simple procedure. Simulators do not see the results, you need to see the implementation of the callback function in LogCat.

logcat output filter class Source Code for Andriod.

A class to keep last N of lines sent to the server and responses received from the server. They are sent to logcat when {@link #logLastDiscourse} is called.