1、Number “1234.568”想轉(zhuǎn)成貨幣形式 “￥1,234.57”

extension Formatter {
    static let withSeparator: NumberFormatter = {
        let formatter = NumberFormatter()
        formatter.numberStyle = .currency
        return formatter
    }()
}

// 打印結(jié)果SHP 1,234.57
print(Formatter.withSeparator.string(from: "1234.568")

上述得出的結(jié)果卻是 “SHP 1,234.57”

2、解決

extension Formatter {
    static let withSeparator: NumberFormatter = {
        let formatter = NumberFormatter()
        formatter.numberStyle = .currency
        formatter.locale = Locale(identifier: "zh_Hans_CN")
        return formatter
    }()
}
  
formatter對象添加設(shè)置屬性locale
formatter.locale = Locale(identifier: "zh_Hans_CN")

// 打印結(jié)果￥1,234.57
print(Formatter.withSeparator.string(from: "1234.568")

通過給對象formatter添加屬性locale實現(xiàn)想要的貨幣格式
formatter.locale = Locale(identifier: "zh_Hans_CN")

備注： 如果想要顯示成美元$符號，locale屬性設(shè)置成：en_US
formatter.locale = Locale(identifier: "en_US")