Cara membuat format rupiah di pemrograman swift cukup mudah, seperti berikut :

Koding menggunakan swift playground :

//belajaraplikasi.com
//===================

import UIKit

var str = "Format Rupiah di Swift"
var harga:Int = 150000

let formatter = NumberFormatter()
formatter.locale = Locale(identifier: "id_ID")
formatter.groupingSeparator = "."
formatter.numberStyle = .decimal
if let formattedTipAmount = formatter.string(from: harga as NSNumber) {
   print("Harga : Rp " + formattedTipAmount + ",00")
}

Sekian dan terima kasih
semoga membantu 🙂