NSDate实例以NSLocale本地化格式输出

Overview

Instances of NSDateFormatter create string representations of NSDate (and NSCalendarDate) objects, and convert textual representations of dates and times into NSDate objects. You can express the representation of dates and times flexibly using pre-set format styles or custom format strings.

In general, you are encouraged to use format styles (see timeStyle, dateStyle, and NSDateFormatterStyle) rather than using custom format strings, since the format for a given style reflects a user’s preferences. Format styles also reflect the locale setting.

NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setTimeStyle:NSDateFormatterNoStyle];
[dateFormatter setDateStyle:NSDateFormatterMediumStyle];

NSDate *date = [NSDate dateWithTimeIntervalSinceReferenceDate:118800];

NSLocale *usLocale = [[NSLocale alloc] initWithLocaleIdentifier:@"en_US"];
[dateFormatter setLocale:usLocale];

NSLog(@"Date for locale %@: %@",
      [[dateFormatter locale] localeIdentifier], [dateFormatter stringFromDate:date]);
// Output:
// Date for locale en_US: Jan 2, 2001

NSLocale *frLocale = [[NSLocale alloc] initWithLocaleIdentifier:@"fr_FR"];
[dateFormatter setLocale:frLocale];
NSLog(@"Date for locale %@: %@",
      [[dateFormatter locale] localeIdentifier], [dateFormatter stringFromDate:date]);
// Output:
// Date for locale fr_FR: 2 janv. 2001
 

 

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