wifi通讯实例，无线网络，实现从获取AP信息，连接，到断开连接的实现-communication instance wifi, wireless networks, access AP information from a connection to the implementation of disconnection

在家用无线上网，发现没有记录时长的功能，于是自己写了一个。用API去操作无线上网的程序，用的时候可能要自己去改一下窗口的标题-Wireless Internet access in the home and found no record of when the length function, then write your own one. API to operate with wireless Internet access program, and use the time to ch