Question

当我在 PST 下面运行此代码时， AKST 时区永远不会运行...这两个都完美运行：

NSTimeZone *pacificTimeZone = [NSTimeZone timeZoneWithAbbreviation:@"PST"];
NSTimeZone *alaskaTimeZone = [NSTimeZone timeZoneWithAbbreviation:@"AKST"];

但这些都没有运行：

}else if ([local isEqual: pacificTimeZone]) {
    NSLog(@"Pacific");

} else if ([local isEqual: alaskaTimeZone]) {
    NSLog(@"Alaska");

有什么建议吗？

    NSTimeZone *local = [NSTimeZone localTimeZone];
    NSTimeZone *centralTimeZone = [NSTimeZone timeZoneWithAbbreviation:@"CST"];
    NSTimeZone *easternTimeZone = [NSTimeZone timeZoneWithAbbreviation:@"EST"];
    NSTimeZone *mountainTimeZone = [NSTimeZone timeZoneWithAbbreviation:@"MST"];
    NSTimeZone *pacificTimeZone = [NSTimeZone timeZoneWithAbbreviation:@"PST"];
    NSTimeZone *alaskaTimeZone = [NSTimeZone timeZoneWithAbbreviation:@"AKST"];
    NSTimeZone *honoluluTimeZone = [NSTimeZone timeZoneWithAbbreviation:@"HST"];

    NSLog(@"LOCAL TIME ZONE: %@", local);

    NSLog(@"CST TIME %@", centralTimeZone);
    NSLog(@"EST TIME %@", easternTimeZone);
    NSLog(@"MST TIME %@", mountainTimeZone);
    NSLog(@"PST TIME %@", pacificTimeZone);
    NSLog(@"AKST TIME %@", alaskaTimeZone);
    NSLog(@"HST TIME %@", honoluluTimeZone);


    if ([local isEqual: centralTimeZone])
    {
        NSLog(@"Central");

    } else if ([local isEqual: easternTimeZone]) {
        NSLog(@"Eastern");

    } else if ([local isEqual: mountainTimeZone]) {
        NSLog(@"Mountain");

    }else if ([local isEqual: pacificTimeZone]) {
        NSLog(@"Pacific");

    } else if ([local isEqual: alaskaTimeZone]) {
        NSLog(@"Alaska");

    } else if ([local isEqual: honoluluTimeZone]) {
        NSLog(@"Honolulu");

    }

谢谢！

Answer 1

来自the documentation：

通常，不鼓励使用缩写，但“UTC”或“GMT”等唯一实例除外。时区缩写不是标准化的，因此给定的缩写可能有多种含义 - 例如，“EST”指的是美国和澳大利亚的东部时间

相反，请使用timeZoneWithName。支持的时区来自IANA TZ database，您可以找到它们的列表here。

美国最常见的区域如下：

Alaska   = "America/Anchorage"
Hawaii   = "Pacific/Honolulu"
Pacific  = "America/Los_Angeles"
Arizona  = "America/Phoenix"
Mountain = "America/Denver"
Central  = "America/Chicago"
Eastern  = "America/New_York"

PST和AKST时区错误

1 个答案: