Android 获取本地Mac

获取Wlan的唯一Mac

fun getMac(context: Context): String {
        val wm = context.applicationContext.getSystemService(Context.WIFI_SERVICE) as WifiManager;
        val wi = wm.connectionInfo
        if (wi?.macAddress == null) {
            return ""
        }
        return if ("02:00:00:00:00:00" == wi.macAddress.trim()) {
            ""
        } else {
            wi.macAddress.trim();
        }
    }