Swift - Get list of countries

问题

How can I get an array with all countries names in Swift? I've tried to convert the code I had in Objective-C, which was this:

if (!pickerCountriesIsShown) {
    NSMutableArray *countries = [NSMutableArray arrayWithCapacity: [[NSLocale ISOCountryCodes] count]];

    for (NSString *countryCode in [NSLocale ISOCountryCodes])
    {
        NSString *identifier = [NSLocale localeIdentifierFromComponents: [NSDictionary dictionaryWithObject: countryCode forKey: NSLocaleCountryCode]];
        NSString *country = [[NSLocale currentLocale] displayNameForKey: NSLocaleIdentifier value: identifier];
        [countries addObject: country];
    }

And in Swift I can't pass from here:

        if (!countriesPickerShown) {
        var countries: NSMutableArray = NSMutableArray()
        countries = NSMutableArray.arrayWithCapacity((NSLocale.ISOCountryCodes).count) // Here gives the Error. It marks NSLocale.ISOCountryCodes and .count

Does anyone of you know about this?

Thanks

回答1:

First of all ISOCountryCodes requires argument parenthesis so instead it would be ISOCountryCodes(). Second, you dont need parenthesis around NSLocale and ISOCountryCodes(). Also, arrayWithCapacity is deprecated meaning it is removed from the language. A working version of this would be somewhat like this

if (!countriesPickerShown) {
    var countries = NSMutableArray()
    countries = NSMutableArray(capacity: (NSLocale.ISOCountryCodes().count))
}

回答2:

Here's a Swift extension to NSLocale that returns an array of Swift-friendly Locale structs with the country names and country codes. It could easily be extended to include other country data.

extension NSLocale {

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

    class func locales() -> [Locale] {

        var locales = [Locale]()
        for localeCode in NSLocale.ISOCountryCodes() {
            let countryName = NSLocale.systemLocale().displayNameForKey(NSLocaleCountryCode, value: localeCode)!
            let countryCode = localeCode as! String
            let locale = Locale(countryCode: countryCode, countryName: countryName)
            locales.append(locale)
        }

        return locales
    }

}

And then it's easy to get the array of countries like this:

for locale in NSLocale.locales() {
    println("\(locale.countryCode) - \(locale.countryName)")
}

回答3:

It is an Operation not a Property

if let codes = NSLocale.ISOCountryCodes() {
    println(codes)
}

来源：https://stackoverflow.com/questions/24315741/swift-get-list-of-countries

标签

ios

arrays

swift

nslocale

countries