如何使用 ISOCode 在 swift 中获取带有小数点和分组分隔符的货币格式化程序

Question

小数和分组分隔符不正确：

func setAmountString (amountValue: Int, isoCodeStr: String) {
    let formatter = NumberFormatter()
    formatter.currencyCode = isoCodeStr
    formatter.numberStyle = NumberFormatter.Style.currencyISOCode

     if let formatterStr: String = formatter.string(from: NSNumber(value: amountValue))  {
      return formatterStr
    }else {
      return "0.0"
    }
}

打印("amount in USD (setAmountString(amountValue: Int(1234567.89), isoCodeStr: "美元"))") 打印("amount in GBP (setAmountString(amountValue: Int(1234567.89), isoCodeStr: "GBP"))") 打印("amount in EUR (setAmountString(amountValue: Int(1234567.89), isoCodeStr: "EUR"))")

Output:
amount in USD Optional(",234,567.00")
amount in GBP Optional("£1,234,567.00")
amount in EUR Optional("€1,234,567.00") 

Expected Output:
amount in USD Optional(",234,567.89")
amount in GBP Optional("£1.234.567,89")
amount in EUR Optional("€1.234.567,89")

Answer 1

使用locale更改数字格式（分隔符等）使用currencyCode更改货币符号。例如：

let formatter = NumberFormatter()
formatter.numberStyle = NumberFormatter.Style.currencyAccounting
formatter.locale = Locale(identifier: "DE")
formatter.currencyCode = "eur"
let string = formatter.string(from: 1234567) // "1.234.567,00 €"

Answer 2

错误来自您将值转换为 Int 的方式：

Int(1234567.89)

这会在将 floating-point 值传递给 setAmountString 之前将其四舍五入为 1234567。

尝试将其转换为 Float，或者根本不转换。您还需要更改您的函数签名

func setAmountString (amountValue: Int, isoCodeStr: String)

至

func setAmountString (amountValue: Float, isoCodeStr: String)

如何使用 ISOCode 在 swift 中获取带有小数点和分组分隔符的货币格式化程序

How to get the Currency formatter with decimal and grouping separator in swift using ISOCode

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