ios - Changing grouping separator, currency symbol and position of currency symbol for multiple currencies in Swift -


my app uses multiple currencies, , these currencies uses different formats, example:

price ruble shows as: 1,101 Руб.

same amount us dollar shows as: us $1 101

how change grouping separator, currency symbol , position of currency symbol, defining set of different formats different currencies.

this how short code stands

var formatter = nsnumberformatter() formatter.numberstyle = .currencystyle formatter.locale = nslocale.currentlocale() formatter.stringfromnumber(4500000) //output : $4,500,000.00 //expected : 4,500,000 Руб.

try this:

struct number {     static let formatterbelarusianruble: nsnumberformatter = {         let formatter = nsnumberformatter()         // set numberstyle .currencystyle         formatter.numberstyle = .currencystyle         // set desired negative , positive formats grouping, , currency symbol position         formatter.positiveformat = "#,##0 ¤"         formatter.negativeformat = "-#,##0 ¤"         // set custom currency symbol         formatter.currencysymbol = "Руб"         return formatter     }() }  let stringtodisplay = number.formatterbelarusianruble.stringfromnumber(4500000)  // 4,500,000 Руб

as extension:

extension double {     struct number {         static let formatterbyr: nsnumberformatter = {             let formatter = nsnumberformatter()             formatter.numberstyle = .currencystyle             formatter.positiveformat = "#,##0 ¤"             formatter.negativeformat = "-#,##0 ¤"             formatter.currencysymbol = "Руб"             return formatter         }()         static let formattereur: nsnumberformatter = {             let formatter = nsnumberformatter()             formatter.locale = nslocale(localeidentifier: "pt_pt")             formatter.numberstyle = .currencystyle             return formatter         }()         static let formatterusd: nsnumberformatter = {             let formatter = nsnumberformatter()             formatter.locale = nslocale(localeidentifier: "en_us")             formatter.numberstyle = .currencystyle             return formatter         }()         static let formatterrub: nsnumberformatter = {             let formatter = nsnumberformatter()             formatter.locale = nslocale(localeidentifier: "ru_ru")             formatter.numberstyle = .currencystyle             formatter.maximumfractiondigits = 0             return formatter         }()         static let formatterlocale: nsnumberformatter = {             let formatter = nsnumberformatter()             formatter.locale = nslocale.currentlocale()             formatter.numberstyle = .currencystyle             return formatter         }()     }     var currencylocale: string { return number.formatterlocale.stringfromnumber(self) ?? "" }     var currencyusd:    string { return number.formatterusd.stringfromnumber(self) ?? "$0.00" }     var currencyeur:    string { return number.formattereur.stringfromnumber(self) ?? "0,00 €" }     var currencybyr:    string { return number.formatterbyr.stringfromnumber(self) ?? "0 pyб" }     var currencyrub:    string { return number.formatterrub.stringfromnumber(self) ?? "0,00 ₽" } }

usage

let amount = 4500000.0  let stringlocale = amount.currencylocale   // "$4,500,000.00"  let stringusd = amount.currencyusd         // "$4,500,000.00" let stringeur = amount.currencyeur         // "4 500 000,00 €" let stringbyr = amount.currencybyr         // "4,500,000 Руб" let stringrub = amount.currencyrub         // "4 500 000 ₽"

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