WifiManager wifiManager = (WifiManager) getSystemService(WIFI_SERVICE); 
WifiInfo wifiInfo = wifiManager.getConnectionInfo(); 
int ipAddress = wifiInfo.getIpAddress(); 

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(LOG_TAG, ex.toString()); 
  } 
  return null; 
}