How do I maintain the Immersive Mode in Dialogs?

Question

How do I maintain the new Immersive Mode when my activities display a custom Dialog?

I am using the code below to maintain the Immersive Mode in Dialogs, but with th

Answer 1

For your information, thanks to @Beaver6813's answer, I've been able to get this working using DialogFragment.

in the onCreateView method of my DialogFragment, I've just added the following :

    getDialog().getWindow().setFlags(WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE, WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE);
    getDialog().getWindow().getDecorView().setSystemUiVisibility(getActivity().getWindow().getDecorView().getSystemUiVisibility());

    getDialog().setOnShowListener(new DialogInterface.OnShowListener() {
        @Override
        public void onShow(DialogInterface dialog) {
            //Clear the not focusable flag from the window
            getDialog().getWindow().clearFlags(WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE);

            //Update the WindowManager with the new attributes (no nicer way I know of to do this)..
            WindowManager wm = (WindowManager) getActivity().getSystemService(Context.WINDOW_SERVICE);
            wm.updateViewLayout(getDialog().getWindow().getDecorView(), getDialog().getWindow().getAttributes());
        }
    });