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 getMacAddress(Context context) { WifiManager wm = (WifiManager) context.getSystemService(Context.WIFI_SERVICE); WifiInfo info = wm.getConnectionInfo(); return info.getMacAddress(); } }