Get country code from country name in IOS

Question

Im retrieving a country name from a server in english. For example, "Spain"

What I want to do is, assuming the country name is going to be written in english, get the country code.

What should I do? I´ve found getting the country name from the country code quite easy, but I´ve got no idea of how to do the opposite operation.

Thanks a lot.

Answer 1

My compact version including the fix for matching only against english country names version.

extension NSLocale
{
    class func localeForCountry(countryName : String) -> String?
    {
        return NSLocale.ISOCountryCodes().first{self.countryNameFromLocaleCode($0 as! String) == countryName} as? String
    }

    private class func countryNameFromLocaleCode(localeCode : String) -> String
    {
        return NSLocale(localeIdentifier: "en_UK").displayNameForKey(NSLocaleCountryCode, value: localeCode) ?? ""
    }
}

Answer 2

So this solution works well in swift 4 taken from comments above...

extension NSLocale {
   struct Locale {
    let countryCode: String
    let countryName: String
   }

  class func locales() -> [Locale] {

    var locales = [Locale]()

    for localeCode in NSLocale.isoCountryCodes {
        let identifier = NSLocale(localeIdentifier: localeCode)
        let countryName = identifier.displayName(forKey: NSLocale.Key.countryCode, value: localeCode)!
        let countryCode = localeCode
        let locale = Locale(countryCode: countryCode, countryName: countryName)
        locales.append(locale)
    }

    return locales.sorted{$0.countryName.localizedCaseInsensitiveCompare($1.countryName) == ComparisonResult.orderedAscending}
 }
}

enjoy!

Answer 3

Swift 3.0 :

Getting the country code and country name as NS Dictionary-

let countryCodes: [AnyObject] = NSLocale.isoCountryCodes as [AnyObject]

        let countries: NSMutableArray = NSMutableArray(capacity: countryCodes.count)

        for countryCode in countryCodes {
            let identifier: String = NSLocale.localeIdentifier(fromComponents: NSDictionary(object: countryCode, forKey: NSLocale.Key.countryCode as NSCopying) as! [String : String])
            let country: String = NSLocale(localeIdentifier: "en_US").displayName(forKey: NSLocale.Key.identifier, value: identifier)!
            countries.add(country)
        }
        let codeForCountryDictionary: [NSObject : AnyObject] = NSDictionary(objects: countryCodes, forKeys: countries as! [NSCopying]) as [NSObject : AnyObject]

        print(codeForCountryDictionary)

Answer 4

This is how to do this in Swift 4.0(also work in Swift 3.2).

NSLocale.isoCountryCodes.forEach { (code) in
    print(code)
    let name = NSLocale(localeIdentifier: "zh_CN").displayName(forKey: NSLocale.Key.countryCode, value: code)
    print(name)
}

Answer 5

Jef's answer helped here, with slight additions.

NSArray *countryCodes = [NSLocale ISOCountryCodes];
NSMutableArray *countries = [NSMutableArray arrayWithCapacity:[countryCodes count]];

for (NSString *countryCode in countryCodes)
{
    NSString *identifier = [NSLocale localeIdentifierFromComponents: [NSDictionary dictionaryWithObject: countryCode forKey: NSLocaleCountryCode]];
    NSString *country = [[[NSLocale alloc] initWithLocaleIdentifier:@"en_UK"] displayNameForKey: NSLocaleIdentifier value: identifier];
    [countries addObject: country];
}

NSDictionary *codeForCountryDictionary = [[NSDictionary alloc] initWithObjects:countryCodes forKeys:countries];

Now go through the 'codeForCountryDictionary' with the name of the country for which you require the code, for example,

NSLog(@"%@",[codeForCountryDictionary objectForKey:@"Spain"]);

would yield the result as 'ES', which is the 2 letter country code for spain.

Answer 6

here is Daxesh Negar code in swift 3

    extension NSLocale {
    class func locales1(countryName1 : String) -> String {
        let locales : String = ""
        for localeCode in NSLocale.isoCountryCodes {
            let countryName = Locale.current.regionCode
            if countryName1.lowercased() == countryName?.lowercased() {
                return localeCode
            }
        }
        return locales
    }
}