Detect behind VPN in android

Question

How to detect programatically if traffic is going through VPN without using intent to connect to VPNService. Is there some system call?

Answer 1

This works :

private boolean checkVPN() {
    ConnectivityManager cm = (ConnectivityManager) this.getSystemService(Context.CONNECTIVITY_SERVICE);
    return cm.getNetworkInfo(ConnectivityManager.TYPE_VPN).isConnectedOrConnecting();
}