iOS 获取国家列表、转json

    NSLocale *locale = [NSLocalecurrentLocale];

    

    NSArray *countryArray = [NSLocaleISOCountryCodes];

    NSMutableDictionary *objectDic = [[NSMutableDictionaryalloc] init];

    for (NSString *countryCodein countryArray)

    {

        NSString *displayNameString = [localedisplayNameForKey:NSLocaleCountryCodevalue:countryCode];

        [objectDic setObject:displayNameStringforKey:countryCode];

    }

    NSString *jsonString = [objectDicjsonStringEncoded];

    NSLog(@"json：%@",jsonString);

    NSLog(@"%@",objectDic);