获取正确的 NSDate 值 - 这是最有效的方法吗？

发布于 2024-12-23 07:20:04 字数 815 浏览 2 评论 0原文

我有这个代码来获取本地日期/时间。它有效，但要获取我当前的日期/时间值而不是 GMT 时间，似乎还有很长的路要走（10 个语句）。

NSDate          *currentDateGMT = [NSDate date];
NSDateFormatter *currentDateDateFormatter = [[NSDateFormatter alloc] init];
NSTimeZone      *currentDateTimeZoneGMT = [NSTimeZone timeZoneWithName:@"GMT"];
NSLocale *locale = [[NSLocale alloc] initWithLocaleIdentifier:@"en_US_POSIX"];

[currentDateDateFormatter setTimeZone: currentDateTimeZoneGMT];
[currentDateDateFormatter setDateFormat:@"yyyy-MM-dd HH:mm"];
[currentDateDateFormatter setLocale:locale];

NSString *currentDateString = [currentDateDateFormatter stringFromDate:currentDateGMT];
NSDate *currentDateAdjusted = [currentDateDateFormatter dateFromString:currentDateString]; 

[currentDateDateFormatter release];

有人可以确认这是获取当前机器价值的最佳方法吗？

谢谢

原文

I have this code to get the local date/time. It works but it seems a long way around the bush (10 statements) to get my current date/time value rather than the GMT time.

NSDate          *currentDateGMT = [NSDate date];
NSDateFormatter *currentDateDateFormatter = [[NSDateFormatter alloc] init];
NSTimeZone      *currentDateTimeZoneGMT = [NSTimeZone timeZoneWithName:@"GMT"];
NSLocale *locale = [[NSLocale alloc] initWithLocaleIdentifier:@"en_US_POSIX"];

[currentDateDateFormatter setTimeZone: currentDateTimeZoneGMT];
[currentDateDateFormatter setDateFormat:@"yyyy-MM-dd HH:mm"];
[currentDateDateFormatter setLocale:locale];

NSString *currentDateString = [currentDateDateFormatter stringFromDate:currentDateGMT];
NSDate *currentDateAdjusted = [currentDateDateFormatter dateFromString:currentDateString]; 

[currentDateDateFormatter release];

Can someone confirm that this is the best way to obtain the current machine value?

Thanks

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仙女 2024-12-30 07:20:04

NSDateFormatter 将默认为用户时区，因此最简单的解决方案是

NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
//lower case h for hour will also default to the users
//12/24 hour clock preference
[formatter setDateFormat:@"yyyy-MM-dd hh:mm"];

NSString *currentDate = [formatter stringFromDate:[NSDate date]];

[formatter release];

NSDateFormatter will default to the users time zone so the simplest solution is

NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
//lower case h for hour will also default to the users
//12/24 hour clock preference
[formatter setDateFormat:@"yyyy-MM-dd hh:mm"];

NSString *currentDate = [formatter stringFromDate:[NSDate date]];

[formatter release];

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