Here you can find the source of getDevicesMac(Context context)
public static String getDevicesMac(Context context)
//package com.java2s; import android.content.Context; import android.net.wifi.WifiInfo; import android.net.wifi.WifiManager; public class Main { public static String getDevicesMac(Context context) { WifiManager wifiManager = (WifiManager) context .getSystemService(Context.WIFI_SERVICE); if (!wifiManager.isWifiEnabled()) { wifiManager.setWifiEnabled(true); }//w w w. j a v a 2s .c om WifiInfo wifiInfo = wifiManager.getConnectionInfo(); String mac = wifiInfo.getMacAddress().toString(); return mac; } }