两台或多台android设备,其中有一台作为服务端,则另外一台或几台作为客户端,然后通过UDP进行自动连接.其实现的原理很简单,服务端这一边通过MulticastSocket将自己的有关信息,如IP,端口等广播出去,同一个广播地址里面的客户端可以接收到该广播,并从中解析要相关的信息.(Two or more Android devices, including one as a server, then another one or several Taiwan as the client, and then through the UDP automatic connection. The principle is very simple, the server side through MulticastSocket information about yourself, such as IP, port broadcast with a broadcast address. The client can receive the broadcast, and related information from the analysis.)