How to Close Drawer Layout or Navigation Layout on OnBackPress in Activity in android

InSide OnCreate

private DrawerLayout drawerLayout;
drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);



OnBackPressed Event

@Override
    public void onBackPressed() {
        if (drawerLayout.isDrawerOpen(Gravity.START)) {
            drawerLayout.closeDrawer(Gravity.START);
        } else {
            super.onBackPressed();
        }
    }