onItemSelectedListener

activityMainBinding.navigationRail?.setOnItemSelectedListener { item ->
            when (item.itemId) {

                R.id.alarms -> {
                    Toast.makeText(this, "Alarms Clicked", Toast.LENGTH_SHORT).show()
                    true
                }

                else -> {
                    Toast.makeText(this, "Other item clicked", Toast.LENGTH_SHORT).show()
                    true
                }
            }
        }