需要在AndroidManifest.xml文件中添加权限：   

<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" /> 

public String getLocalMacAddress() {
  WifiManager wifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);
  WifiInfo info = wifi.getConnectionInfo();
  return info.getMacAddress();
 }

2、Android 获取本机IP地址方法：

  

public String getLocalIpAddress() {
  try {
   for (Enumeration<NetworkInterface> en = NetworkInterface
     .getNetworkInterfaces(); en.hasMoreElements();) {
    NetworkInterface intf = en.nextElement();
    for (Enumeration<InetAddress> enumIpAddr = intf
      .getInetAddresses(); enumIpAddr.hasMoreElements();) {
     InetAddress inetAddress = enumIpAddr.nextElement();
     if (!inetAddress.isLoopbackAddress()) {
      return inetAddress.getHostAddress().toString();
     }
    }
   }
  } catch (SocketException ex) {
   Log.e("WifiPreference IpAddress", ex.toString());
  }
  return null;
 }