将时区名称转换为Xcode中的Time ID：s

我发现iOS框架不能理解适当的时区名称，如“东部标准时间”，如果input：

NSLog(@"EST: %@", [NSTimeZone timeZoneWithName:@"Eastern Standard Time"]); 

… 你得到：

EST：（null）

相反，您必须使用时间ID：s（较窄的区域），例如“America / New_York”

 NSLog(@"EST: %@", [NSTimeZone timeZoneWithName:@"America/New_York"]); 

然后在Xcode中的控制台好心回应：

EST：America / New_York（GMT-4）胶印-14400（日光）

有没有办法将时区名称翻译成时间ID：S？ 因为我使用的web-API给我的时区名称，而不是时间ID：s。

Answer 1

这就是我做的。 （愚蠢的解决scheme，但它的工作原理。）我使用了unicode.org上的Windows / TZID时区映射，并围绕一个大字典做了一个方法。

 - (NSString*) translateFromWindowsTimezone: (NSString*) timezoneName{ NSDictionary *timezoneDictionary = [NSDictionary dictionaryWithObjectsAndKeys: @"Australia/Darwin", @"AUS Central Standard Time", @"Asia/Kabul", @"Afghanistan Standard Time", @"America/Anchorage", @"Alaskan Standard Time", @"Asia/Riyadh", @"Arab Standard Time", @"Asia/Baghdad", @"Arabic Standard Time", @"America/Buenos_Aires", @"Argentina Standard Time", @"America/Halifax", @"Atlantic Standard Time", @"Asia/Baku", @"Azerbaijan Standard Time", @"Atlantic/Azores",@"Azores Standard Time", @"America/Bahia", @"Bahia Standard Time", @"Asia/Dhaka", @"Bangladesh Standard Time", @"America/Regina", @"Canada Central Standard Time", @"Atlantic/Cape_Verde", @"Cape Verde Standard Time", @"Asia/Yerevan", @"Caucasus Standard Time", @"Australia/Adelaide", @"Cen. Australia Standard Time", @"America/Guatemala", @"Central America Standard Time", @"Asia/Almaty", @"Central Asia Standard Time", @"America/Cuiaba", @"Central Brazilian Standard Time", @"Europe/Budapest", @"Central Europe Standard Time", @"Europe/Warsaw", @"Central European Standard Time", @"Pacific/Guadalcanal", @"Central Pacific Standard Time", @"America/Chicago", @"Central Standard Time", @"America/Mexico_City", @"Central Standard Time (Mexico)", @"Asia/Shanghai", @"China Standard Time", @"Etc/GMT+12", @"Dateline Standard Time", @"Africa/Nairobi", @"E. Africa Standard Time", @"Australia/Brisbane", @"E. Australia Standard Time", @"Asia/Nicosia", @"E. Europe Standard Time", @"America/Sao_Paulo", @"E. South America Standard Time", @"America/New_York", @"Eastern Standard Time", @"Africa/Cairo", @"Egypt Standard Time", @"Asia/Yekaterinburg", @"Ekaterinburg Standard Time", @"Europe/Kiev", @"FLE Standard Time", @"Pacific/Fiji", @"Fiji Standard Time", @"Europe/London", @"GMT Standard Time", @"Europe/Bucharest", @"GTB Standard Time", @"Asia/Tbilisi", @"Georgian Standard Time", @"America/Godthab", @"Greenland Standard Time", @"Atlantic/Reykjavik", @"Greenwich Standard Time", @"Pacific/Honolulu", @"Hawaiian Standard Time", @"Asia/Calcutta", @"India Standard Time", @"Asia/Tehran", @"Iran Standard Time", @"Asia/Jerusalem", @"Israel Standard Time", @"Asia/Amman", @"Jordan Standard Time", @"Europe/Kaliningrad", @"Kaliningrad Standard Time", @"Asia/Seoul", @"Korea Standard Time", @"Indian/Mauritius", @"Mauritius Standard Time", @"Asia/Beirut", @"Middle East Standard Time", @"America/Montevideo", @"Montevideo Standard Time", @"Africa/Casablanca", @"Morocco Standard Time", @"America/Denver", @"Mountain Standard Time", @"America/Chihuahua", @"Mountain Standard Time (Mexico)", @"Asia/Rangoon", @"Myanmar Standard Time", @"Asia/Novosibirsk", @"N. Central Asia Standard Time", @"Africa/Windhoek", @"Namibia Standard Time", @"Asia/Katmandu", @"Nepal Standard Time", @"Pacific/Auckland", @"New Zealand Standard Time", @"America/St_Johns", @"Newfoundland Standard Time", @"Asia/Irkutsk", @"North Asia East Standard Time", @"Asia/Krasnoyarsk", @"North Asia Standard Time", @"America/Santiago", @"Pacific SA Standard Time", @"America/Los_Angeles", @"Pacific Standard Time", @"America/Santa_Isabel", @"Pacific Standard Time (Mexico)", @"Asia/Karachi", @"Pakistan Standard Time", @"America/Asuncion", @"Paraguay Standard Time", @"Europe/Paris", @"Romance Standard Time", @"Europe/Moscow", @"Russian Standard Time", @"America/Cayenne", @"SA Eastern Standard Time", @"America/Bogota", @"SA Pacific Standard Time", @"America/La_Paz", @"SA Western Standard Time", @"Asia/Bangkok", @"SE Asia Standard Time", @"Pacific/Apia", @"Samoa Standard Time", @"Asia/Singapore", @"Singapore Standard Time", @"Africa/Johannesburg", @"South Africa Standard Time", @"Asia/Colombo", @"Sri Lanka Standard Time", @"Asia/Damascus", @"Syria Standard Time", @"Asia/Taipei", @"Taipei Standard Time", @"Australia/Hobart", @"Tasmania Standard Time", @"Asia/Tokyo", @"Tokyo Standard Time", @"Pacific/Tongatapu", @"Tonga Standard Time", @"Europe/Istanbul", @"Turkey Standard Time", @"America/Indianapolis", @"US Eastern Standard Time", @"America/Phoenix", @"US Mountain Standard Time", @"Etc/GMT", @"UTC", @"Etc/GMT-12", @"UTC+12", @"Etc/GMT+2", @"UTC-02", @"Etc/GMT+11", @"UTC-11", @"Asia/Ulaanbaatar", @"Ulaanbaatar Standard Time", @"America/Caracas", @"Venezuela Standard Time", @"Asia/Vladivostok", @"Vladivostok Standard Time", @"Australia/Perth", @"W. Australia Standard Time", @"Africa/Lagos", @"W. Central Africa Standard Time", @"Europe/Berlin", @"W. Europe Standard Time", @"Asia/Tashkent", @"West Asia Standard Time", @"Pacific/Port_Moresby", @"West Pacific Standard Time", @"Asia/Yakutsk", @"Yakutsk Standard Time", nil]; return [timezoneDictionary objectForKey:timezoneName]; } 

要使用它，只需键入：

 NSString *tzidTimezoneName = [self translateFromWindowsTimezone: someWindowsTimezoneName]; 

如果您使用此代码，请发现有关错误或缺less时区的评论。

Answer 2

我知道没有标准会使用你所说的“适当的时区名称”。 那些地区依赖，夏季和冬季之间的变化等。这是说这个代码将做你所描述的：

 - (NSTimeZone *)timeZoneForLongName:(NSString *)longName { NSLocale *locale=[[NSLocale alloc]initWithLocaleIdentifier:@"en_US"]; for(NSString *name in NSTimeZone.knownTimeZoneNames) { NSTimeZone *tz=[NSTimeZone timeZoneWithName:name]; if([[tz localizedName:NSTimeZoneNameStyleStandard locale:locale]isEqualToString:longName] || [[tz localizedName:NSTimeZoneNameStyleDaylightSaving locale:locale]isEqualToString:longName] ) { return tz; } } return nil; }