How to detect that the DrawerLayout started opening?

Question

So I have tabs that I want to hide when the Navigation Drawer starts opening. The code I have hides them when it finished opening, but it\'s not what I want

Answer 1

For Kotlin

var toggle = object : ActionBarDrawerToggle(this,
                drawer_layout, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close) {

            override fun onDrawerOpened(drawerView: View) {
                super.onDrawerOpened(drawerView)
            }
        }
drawer_layout.addDrawerListener(toggle)
toggle.syncState()