实现PC与android手机SD卡之间通过wifi共享文件，基于TCP协议的通信程序，电脑端软件为MFC程序，手动输入手机的IP地址，可以使android手机和PC建立连接。传送几兆文件时速度快，文件完整。-Achieved sharing files between the PC and android mobile phone SD card by wifi, TCP-based communication program, PC software program is developed