Java tutorial
//package com.java2s; import android.content.Context; import android.net.wifi.WifiInfo; import android.net.wifi.WifiManager; public class Main { public static String getMacInfo(Context context) { String macAddress = null, ip = null; WifiManager wifiMgr = (WifiManager) context.getSystemService(Context.WIFI_SERVICE); WifiInfo info = (null == wifiMgr ? null : wifiMgr.getConnectionInfo()); if (null != info) { macAddress = info.getMacAddress(); } return macAddress; } }