public boolean isInternetAvailable() {
    try {
        InetAddress ipAddr = InetAddress.getByName("google.com"); //You can replace it with your name

        if (ipAddr.equals("")) {
            return false;
        } else {
            return true;
        }

    } catch (Exception e) {
        return false;
    }
}

public boolean isOnline() {
    ConnectivityManager cm =
        (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo netInfo = cm.getActiveNetworkInfo();
    return netInfo != null && netInfo.isConnectedOrConnecting();
}

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

private Handler mInternetHandler = new Handler();
private Runnable mInternetRunnable = new Runnable()
{
    @Override
    public void run()
    {
        if(isOnline()){
            doInternetWork();
        } else {
            mInternetHandler.postDelayed(this, TIME_TO_CHECK_INTERNET_CONNECTION);
        }
    }
}

mInternetHandler.post(mInternetRunnable);