Show dilaog- Activity extension function

Activity.showDialog

  fun Activity.showDialog(title: String,
                            message: String,
                            positiveButtonFunction: () -> Unit = {},
                            negativeButtonFunction: () -> Unit = {},
                            positiveButtonText: String = "YES",
                            negativeButtonText: String = "NO") {
        val builder = AlertDialog.Builder(this)
        builder.setTitle(title)
        builder.setMessage(message)

        // Set a positive button and its click listener on alert dialog
        builder.setPositiveButton(positiveButtonText) { _, _ ->
            positiveButtonFunction
        }
        builder.setNegativeButton(negativeButtonText) { _, _ ->
            negativeButtonFunction
        }
        val dialog: AlertDialog = builder.create()
        dialog.show()
    }