在iOS 5上获取locale

Question

我有这段代码，从NSLocale获取一些信息(当前国家，国家名称)。

它在iOS 4.3中没有任何问题，但在iOS 5中崩溃。

检查后，似乎[locale localeIdentifier]和[locale displayNameForKey: value:]根本不工作，但在构建它时没有检测到警告和错误。

我怎么做才能让它在iOS 5中工作?

// Create a pool for autoreleased objects
    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
    // Get the current country and locale information of the user
    NSLocale *locale = [NSLocale currentLocale];
    NSString *currentLocaleID = [locale localeIdentifier];    //returns en_US instead of the actual country stored in phone settings
    NSDictionary *localeDictionary = [NSLocale componentsFromLocaleIdentifier:currentLocaleID];     
    NSString *currentCountry = [locale displayNameForKey:NSLocaleCountryCode 
                                                   value:[localeDictionary objectForKey:NSLocaleCountryCode]];     // returns nil
    // Get the list of country codes
    NSArray *countryCodeArray = [NSLocale ISOCountryCodes];
    NSMutableArray *sortedCountryNameArray = [NSMutableArray array];

    for (NSString *countryCode in countryCodeArray) {
        NSString *displayNameString = [locale displayNameForKey:NSLocaleCountryCode value:countryCode];   //displayNameString is nil after executing this line
        [sortedCountryNameArray addObject:displayNameString];   //app crashes here
    }
    // Drain the autoreleased pool
    [pool drain];

Answer 1

在iOS 5.1和5.1.1中不会崩溃