我想使用NSLocale显示基于国家名称或国家/地区代码的货币符号我有所有国家/地区名称列表.假设我选择了USA然后返回$Currency

代码：

NSLocale *locale = [NSLocale currentLocale];

NSString *countryCode = [locale objectForKey: NSLocaleCountryCode];

NSString *country = [locale displayNameForKey: NSLocaleCurrencyCode value: countryCode];

您可以使用以下代码构建自己的国家/地区代码列表和该国家/地区的货币符号：

Objective-C的：

- (void)listCountriesAndCurrencies {

NSArray *localeIds = [NSLocale availableLocaleIdentifiers];

NSMutableDictionary *countryCurrency = [NSMutableDictionary dictionary];

for (NSString *localeId in localeIds) {

NSLocale *locale = [NSLocale localeWithLocaleIdentifier:localeId];

NSString *country = [locale objectForKey: NSLocaleCountryCode];

if (country && country.length == 2) {

NSString *currency = [locale objectForKey: NSLocaleCurrencySymbol];

countryCurrency[country] = currency;

}

}

NSArray *sorted = [countryCurrency.allKeys sortedArrayUsingSelector:@selector(compare:)];

for (NSString *country in sorted) {

NSString *currency = countryCurrency[country];

NSLog(@"country: %@, currency: %@", country, currency);

}

}

此代码以所有区域设置ID的列表开头.从那里创建每个关联的NSLocale.对于每个区域设置,将提取国家/地区代码和货币符号.这些用于构建国家代码和货币符号的字典,然后打印出来.

这是转换为Swift 3的相同代码：

func listCountriesAndCurrencies() {

let localeIds = Locale.availableIdentifiers

var countryCurrency = [String: String]()

for localeId in localeIds {

let locale = Locale(identifier: localeId)

if let country = locale.regionCode, country.characters.count == 2 {

if let currency = locale.currencySymbol {

countryCurrency[country] = currency

}

}

}

let sorted = countryCurrency.keys.sorted()

for country in sorted {

let currency = countryCurrency[country]!

print("country: \(country), currency: \(currency)")

}

}

在模拟的iOS 10设备上运行时,这会产生以下列表：

country: AD, currency: €

country: AE, currency: د.إ.‏

country: AF, currency: ؋

country: AG, currency: $

country: AI, currency: $

country: AL, currency: Lekë

country: AM, currency: ֏

country: AO, currency: Kz

country: AR, currency: $

country: AS, currency: $

country: AT, currency: €

country: AU, currency: $

country: AW, currency: Afl.

country: AX, currency: €

country: AZ, currency: ₼

country: BA, currency: KM

country: BB, currency: $

country: BD, currency: ৳

country: BE, currency: €

country: BF, currency: CFA

country: BG, currency: лв.

country: BH, currency: د.ب.‏

country: BI, currency: FBu

country: BJ, currency: CFA

country: BL, currency: €

country: BM, currency: $

country: BN, currency: $

country: BO, currency: Bs

country: BQ, currency: $

country: BR, currency: R$

country: BS, currency: $

country: BT, currency: Nu.

country: BW, currency: P

country: BY, currency: р.

country: BZ, currency: $

country: CA, currency: $

country: CC, currency: $

country: CD, currency: FC

country: CF, currency: FCFA

country: CG, currency: FCFA

country: CH, currency: CHF

country: CI, currency: CFA

country: CK, currency: $

country: CL, currency: $

country: CM, currency: FCFA

country: CN, currency: ¥

country: CO, currency: $

country: CR, currency: ₡

country: CU, currency: $

country: CV, currency: ​

country: CW, currency: NAf.

country: CX, currency: $

country: CY, currency: €

country: CZ, currency: Kč

country: DE, currency: €

country: DG, currency: US$

country: DJ, currency: Fdj

country: DK, currency: kr.

country: DM, currency: $

country: DO, currency: RD$

country: DZ, currency: د.ج.‏

country: EA, currency: €

country: EC, currency: $

country: EE, currency: €

country: EG, currency: ج.م.‏

country: EH, currency: د.م.‏

country: ER, currency: Nfk

country: ES, currency: €

country: ET, currency: Br

country: FI, currency: €

country: FJ, currency: $

country: FK, currency: £

country: FM, currency: US$

country: FO, currency: kr

country: FR, currency: €

country: GA, currency: FCFA

country: GB, currency: £

country: GD, currency: $

country: GE, currency: ₾

country: GF, currency: €

country: GG, currency: £

country: GH, currency: GH₵

country: GI, currency: £

country: GL, currency: kr.

country: GM, currency: D

country: GN, currency: FG

country: GP, currency: €

country: GQ, currency: FCFA

country: GR, currency: €

country: GT, currency: Q

country: GU, currency: $

country: GW, currency: CFA

country: GY, currency: $

country: HK, currency: HK$

country: HN, currency: L

country: HR, currency: HRK

country: HT, currency: G

country: HU, currency: HUF

country: IC, currency: €

country: ID, currency: Rp

country: IE, currency: €

country: IL, currency: ₪

country: IM, currency: £

country: IN, currency: ₹

country: IO, currency: US$

country: IQ, currency: IQD

country: IR, currency: IRR

country: IS, currency: ISK

country: IT, currency: €

country: JE, currency: £

country: JM, currency: $

country: JO, currency: د.أ.‏

country: JP, currency: ¥

country: KE, currency: Ksh

country: KG, currency: сом

country: KH, currency: ៛

country: KI, currency: $

country: KM, currency: CF

country: KN, currency: $

country: KP, currency: KPW

country: KR, currency: ₩

country: KW, currency: د.ك.‏

country: KY, currency: $

country: KZ, currency: ₸

country: LA, currency: ₭

country: LB, currency: ل.ل.‏

country: LC, currency: $

country: LI, currency: CHF

country: LK, currency: Rs.

country: LR, currency: $

country: LS, currency: R

country: LT, currency: €

country: LU, currency: €

country: LV, currency: €

country: LY, currency: د.ل.‏

country: MA, currency: MAD

country: MC, currency: €

country: MD, currency: L

country: ME, currency: €

country: MF, currency: €

country: MG, currency: Ar

country: MH, currency: $

country: MK, currency: den

country: ML, currency: CFA

country: MM, currency: K

country: MN, currency: ₮

country: MO, currency: MOP$

country: MP, currency: $

country: MQ, currency: €

country: MR, currency: UM

country: MS, currency: $

country: MT, currency: €

country: MU, currency: Rs

country: MV, currency: MVR

country: MW, currency: MK

country: MX, currency: $

country: MY, currency: RM

country: MZ, currency: MTn

country: NA, currency: $

country: NC, currency: FCFP

country: NE, currency: CFA

country: NF, currency: $

country: NG, currency: ₦

country: NI, currency: C$

country: NL, currency: €

country: NO, currency: kr

country: NP, currency: नेरू

country: NR, currency: $

country: NU, currency: $

country: NZ, currency: $

country: OM, currency: ر.ع.‏

country: PA, currency: B/.

country: PE, currency: S/.

country: PF, currency: FCFP

country: PG, currency: K

country: PH, currency: ₱

country: PK, currency: Rs

country: PL, currency: PLN

country: PM, currency: €

country: PN, currency: $

country: PR, currency: $

country: PS, currency: ₪

country: PT, currency: €

country: PW, currency: US$

country: PY, currency: Gs.

country: QA, currency: ر.ق.‏

country: RE, currency: €

country: RO, currency: RON

country: RS, currency: RSD

country: RU, currency: RUB

country: RW, currency: RF

country: SA, currency: ر.س.‏

country: SB, currency: $

country: SC, currency: SR

country: SD, currency: SDG

country: SE, currency: kr

country: SG, currency: $

country: SH, currency: £

country: SI, currency: €

country: SJ, currency: kr

country: SK, currency: €

country: SL, currency: Le

country: SM, currency: €

country: SN, currency: CFA

country: SO, currency: S

country: SR, currency: $

country: SS, currency: £

country: ST, currency: Db

country: SV, currency: $

country: SX, currency: NAf.

country: SY, currency: ل.س.‏

country: SZ, currency: E

country: TC, currency: US$

country: TD, currency: FCFA

country: TG, currency: CFA

country: TH, currency: THB

country: TJ, currency: сом

country: TK, currency: $

country: TL, currency: US$

country: TM, currency: TMT

country: TN, currency: د.ت.‏

country: TO, currency: T$

country: TR, currency: TRY

country: TT, currency: $

country: TV, currency: $

country: TW, currency: NT$

country: TZ, currency: TSh

country: UA, currency: ₴

country: UG, currency: USh

country: UM, currency: $

country: US, currency: $

country: UY, currency: $

country: UZ, currency: soʻm

country: VC, currency: $

country: VE, currency: Bs.

country: VG, currency: US$

country: VI, currency: $

country: VN, currency: ₫

country: VU, currency: VT

country: WF, currency: FCFP

country: WS, currency: WS$

country: XK, currency: €

country: YE, currency: ر.ي.‏

country: YT, currency: €

country: ZA, currency: R

country: ZM, currency: K

country: ZW, currency: US$