check Open about guillotinemenu-android HOT 1 CLOSED

new GuillotineAnimation.GuillotineBuilder(guillotineMenu, guillotineMenu.findViewById(R.id.guillotine_hamburger), contentHamburger)
                .setStartDelay(RIPPLE_DURATION)
                .setActionBarViewForAnimation(toolbar)
                .setGuillotineListener(new GuillotineListener() {
                    @Override
                    public void onGuillotineOpened() {
                        // your logic how to store open state
                        // isOpened = true;
                    }

                    @Override
                    public void onGuillotineClosed() {
                        //same for close state
                        // isOpened = false;
                    }
                })
                .setClosedOnStart(true)
                .build();