我已经找到了 objective-c 的答案,但我很难快速做到这一点。
我用它来获取当前位置的国家代码:
let countryCode = NSLocale.currentLocale().objectForKey(NSLocaleCountryCode) as! String
print(countryCode)
// printing for example US
但是我如何将这个国家代码转换为国家名称,就像在这个例子中将“US”转换为“United States”?
超级干净的 Swift 3 版本将是:
func countryName(countryCode: String) -> String? {
let current = Locale(identifier: "en_US")
return current.localizedString(forRegionCode: countryCode)
}
您可以将区域设置标识符更改为例如。 Locale.current.identifier 如果你想要本地化的名字。上面的示例仅适用于英语。
斯威夫特 3
func countryName(from countryCode: String) -> String {
if let name = (Locale.current as NSLocale).displayName(forKey: .countryCode, value: countryCode) {
// Country name was found
return name
} else {
// Country name cannot be found
return countryCode
}
}
尝试做这样的事情:
// get the localized country name (in my case, it's US English)
let englishLocale = Locale.init(identifier: "en_US")
// get the current locale
let currentLocale = Locale.current
var theEnglishName : String? = englishLocale.displayName(forKey: NSLocaleIdentifier, value: currentLocale.localeIdentifier)
if let theEnglishName = theEnglishName
{
let countryName = theEnglishName.sliceFrom("(", to: ")")
print("the localized country name is \(countryName)")
}
import Foundation
extension String {
func sliceFrom(start: String, to: String) -> String? {
return (rangeOfString(start)?.endIndex).flatMap { sInd in
(rangeOfString(to, range: sInd..<endIndex)?.startIndex).map { eInd in
substringWithRange(sInd..<eInd)
}
}
}
}
我通过研究 this related question 弄明白了这一点。
这是一个紧凑的 swift 4 版本,一直在为我工作:
func countryCode(from countryName: String) -> String? {
return NSLocale.isoCountryCodes.first { (code) -> Bool in
let name = NSLocale.current.localizedString(forRegionCode: code)
return name == countryName
}
}
或像@Memon建议的优雅扩展:
extension Locale {
func countryCode(from countryName: String) -> String? {
return NSLocale.isoCountryCodes.first { (code) -> Bool in
let name = self.localizedString(forRegionCode: code)
return name == countryName
}
}
}
试试这个
let countryLocale : NSLocale = NSLocale.currentLocale()
let countryCode = countryLocale.objectForKey(NSLocaleCountryCode)// as! String
let country = countryLocale.displayNameForKey(NSLocaleCountryCode, value: countryCode!)
print("Country Locale:\(countryLocale) Code:\(countryCode) Name:\(country)")
在 Swift3 上工作
import Foundation
extension String {
func sliceFrom(start: String, to: String) -> String? {
return (range(of: start)?.upperBound).flatMap({ (sInd) -> String? in
(range(of: to, range: sInd..<endIndex)?.lowerBound).map { eInd in
substring(with: sInd..<eInd)
}
})
}
}
在应用委托中使用
let englishLocale : NSLocale = NSLocale.init(localeIdentifier : "en_US")
// get the current locale
let currentLocale = NSLocale.current
var theEnglishName : String? = englishLocale.displayName(forKey: NSLocale.Key.identifier, value: currentLocale.identifier)
if let theEnglishName = theEnglishName
{
countryName = theEnglishName.sliceFrom(start: "(", to: ")")
print("the localized country name is \(countryName)")
}
斯威夫特 4
struct CountryCode {
let country: String?
let code: String
}
let countries: [CountryCode] = NSLocale.isoCountryCodes.map {
let country = (Locale.current as NSLocale).displayName(forKey: .countryCode, value: $0)
return CountryCode(country: country, code: $0)
}
countries.map { print($0) }
// Prints
// CountryCode(country: Optional("Ascension Island"), code: "AC")
// CountryCode(country: Optional("Andorra"), code: "AD")
// CountryCode(country: Optional("United Arab Emirates"), code: "AE")
// CountryCode(country: Optional("Afghanistan"), code: "AF")
如果要打印国名和国旗这里是代码
func countryInformation(countryCode:String){
var flag: String? = ""
let flagBaseCode = UnicodeScalar("🇦").value - UnicodeScalar("A").value
countryCode.uppercased().unicodeScalars.forEach {
if let scaler = UnicodeScalar(flagBaseCode + $0.value) {
flag?.append(String(describing: scaler))
}
}
if flag?.count != 1 {
flag = nil
}
let countryName = Locale.current.localizedString(forRegionCode: countryCode)
print(countryName ?? "No name")
print(flag ?? "No flag")
print(countryCode)
}
使用方法
let regionCode = Locale.current.regionCode ?? "ae"
countryInformation(countryCode: regionCode)
输出将是:
United Arab Emirates
🇦🇪
AE
斯威夫特 3
let currentLocale : NSLocale = NSLocale.init(localeIdentifier : NSLocale.current.identifier)
let countryName : String? = currentLocale.displayName(forKey: NSLocale.Key.countryCode, value: countryCode)
print(countryName ?? "Invalid country code")
注意:如果您手动输入
localIdentifier
表示iOS 8未列出所有国家/地区名称(例如:“en_US”)