摘要：
代码如下：package com.android.xym;import java.io.IOException;import java.net.HttpURLConnection;import java.net.InetAddress;import java.net.NetworkInterface;import java.net.SocketException;import java.net.URL;import java.util.Enumeration;import android.content.Context;import android.net.ConnectivityManage 阅读全文