activity._dialog_sample.kt

val showDialogButton = findViewById<Button>(R.id.show_dialog_button)
showDialogButton?.let {
    it.setOnClickListener {
        dialog {
            title = resources.getString(R.string.custom_dialog_title)
            contentText = resources.getString(R.string.custom_dialog_body)
            negativeText = resources.getString(R.string.custom_dialog_negative_text)
            positiveText = resources.getString(R.string.custom_dialog_positive_text)
            positiveAction = { toast("Positive Action!!!") }
            negativeAction = { toast("Negative Action!!!") }
        }
    }
}