Checking if connected to WiFi

private boolean haveNetworkConnection() {
        boolean haveConnectedWifi = false;

        ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo[] netInfo = cm.getAllNetworkInfo();
        for (NetworkInfo ni : netInfo) {
            if (ni.getTypeName().equalsIgnoreCase("WIFI"))
                if (ni.isConnected())
                    haveConnectedWifi = true;

        }
        return haveConnectedWifi;
    }

All you need to do is add this function in your java file and add the ACCESS NETWORK STATE permission in manifest file, and you are all set.