when (item.itemId) {
            R.id.nav_elemento1 -> {
                Toast.makeText(this, "Elemento 1", Toast.LENGTH_SHORT).show()
            }
            R.id.nav_elemento2 -> {
                Toast.makeText(this, "Elemento 2", Toast.LENGTH_SHORT).show()
            }
        }
        val drawerLayout: DrawerLayout = findViewById(R.id.drawer_layout)
        drawerLayout.closeDrawer(GravityCompat.START)
        return true