DialogFragment that obeys display state

MainActivity.kt

class MainActivity : AppCompatActivity() {

    private val vm by viewModels<MainViewModel>()

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        lifecycleScope.launch {
            repeatOnLifecycle(Lifecycle.State.STARTED) {
                vm.dialogShown.collect { shown ->
                    MyDialogFragment.bind(supportFragmentManager, shown)
                }
            }
        }
    }
}

MyDialogFragment.kt

class MyDialogFragment : DialogFragment() {

    companion object {
        private const val TAG = "MyDialog"

        fun bind(fragmentManager: FragmentManager, shown: Boolean) {
            if (shown) {
                // Prevent showing duplicate Fragments with the same tag over top each other
                if (fragmentManager.findFragmentByTag(TAG) == null) {
                    MyDialogFragment().show(fragmentManager, TAG)
                }
            } else {
                (fragmentManager.findFragmentByTag(TAG) as? MyDialogFragment)?.dismiss()
            }
        }
    }

    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
        return AlertDialog.Builder(requireContext())
            .setTitle("This is the Title!")
            .setMessage("This is the Message!")
            .setPositiveButton("OK") { _, _ -> dismiss() }
            .show()
    }
}