try 在iOS6中运行此功能(尚未测试iOS6之前的版本):
NSDateFormatter *julianDayDateFormatter = nil;
julianDayDateFormatter = [[NSDateFormatter alloc] init];
[julianDayDateFormatter setDateFormat:@"g"];
for (NSString *timeZone in [NSTimeZone knownTimeZoneNames]) {
julianDayDateFormatter.timeZone = [NSTimeZone timeZoneWithName: timeZone];
NSDate *date = [julianDayDateFormatter dateFromString:[NSString stringWithFormat:@"%d", 2475213]];
if (date == nil)
NSLog(@"timeZone = %@", timeZone);
}
您将获得以下输出:
America/Bahia
America/Campo_Grande
America/Cuiaba
America/Sao_Paulo
有人能解释为什么NSDateFormatter设置为julian day数字时这四个时区的行为是这样的吗?所有其他时区使NSDateFormatter返回实际的NSDate.