localeIdentifierFromComponents:
Returns a locale identifier from the components specified in a given dictionary.
+ (NSString *)localeIdentifierFromComponents:(NSDictionary *)dict
Parameters
- dict
- A dictionary containing components that specify a locale. For valid dictionary keys, see“Constants.”
Return Value
A locale identifier created from the components specified in dict.
Discussion of [NSLocale localeIdentifierFromComponents]
This reverses the actions of
componentsFromLocaleIdentifier:, so for example the dictionary {NSLocaleLanguageCode="en", NSLocaleCountryCode="US", NSLocaleCalendar=NSJapaneseCalendar} becomes "en_US@calendar=japanese".
Example of [NSLocale localeIdentifierFromComponents]
NSString *countryCode = @"US";
NSDictionary *components = [NSDictionary dictionaryWithObject:countryCode forKey:NSLocaleCountryCode];
NSString *localeIdent = [NSLocale localeIdentifierFromComponents:components];
NSLocale *locale = [[[NSLocale alloc] initWithLocaleIdentifier:localeIdent] autorelease];
NSString *currencyCode = [locale objectForKey: NSLocaleCurrencyCode];
Example of [NSLocale localeIdentifierFromComponents]
- (NSLocale *) findLocaleByCurrencyCode:(NSString *)_currencyCode
{
NSArray *locales = [NSLocale availableLocaleIdentifiers];
NSLocale *locale = nil;
NSString *localeId;
for (localeId in locales) {
locale = [[[NSLocale alloc] initWithLocaleIdentifier:localeId] autorelease];
NSString *code = [locale objectForKey:NSLocaleCurrencyCode];
if ([code isEqualToString:_currencyCode])
break;
else
locale = nil;
}
/* For some codes that locale cannot be found, init it different way. */
if (locale == nil) {
NSDictionary *components = [NSDictionary dictionaryWithObject:_currencyCode
forKey:NSLocaleCurrencyCode];
localeId = [NSLocale localeIdentifierFromComponents :components];
locale = [[NSLocale alloc] initWithLocaleIdentifier:localeId];
}
return locale;
}
Example of [NSLocale localeIdentifierFromComponents]
myCountryCode = [[NSLocale ISOCountryCodes] objectAtIndex:row];
appLocale = [[NSLocale alloc] initWithLocaleIdentifier: @"en_US"];
identifier = [NSLocale localeIdentifierFromComponents: [NSDictionary
dictionaryWithObject: myCountryCode
forKey: NSLocaleCountryCode]];
myDictionary = [NSLocale componentsFromLocaleIdentifier: identifier];
myCountryName = [appLocale displayNameForKey:NSLocaleCountryCode
value:[myDictionaryobjectForKey:NSLocaleCountryCode]];
// Create the currency language combination and then make our locale
NSString *currencyLocaleLanguage= [NSLocale canonicalLanguageIdentifierFromString: myCountryCode];
NSString *countryLanguage= [NSString stringWithFormat: @"%@_%@", myCountryCode, currencyLocaleLanguage];
NSLocale *currencyLocale = [[NSLocale alloc] initWithLocaleIdentifier: countryLanguage];
localCurrencySymbol = [currencyLocale objectForKey:NSLocaleCurrencySymbol];
currencyCode = [currencyLocale objectForKey:NSLocaleCurrencyCode];
title = [NSString stringWithFormat:@"%@ %@: %@ (%@)", myCountryCode, myCountryName, localCurrencySymbol, currencyCode];
[currencyLocale release];
[appLocale release];