An Objective-C category that adds a single method to NSDate:
-humanIntervalSinceNow. This method returns an NSString with a
human-readable (English) representation of the NSDate, relative to now. The
default values are short, for use on the iPhone. Some examples:
- "just now": Less than 30 seconds ago.
- "n secs": Less than a minute ago.
- "n mins": Less than 45 minutes ago.
- "1 hour": Between 45 and 90 minutes ago.
- "2 hours": Between 90 minutes and three hours ago.
- "n hours": Less than 23 hours ago.
- "1 day": Between 23 and 36 hours ago.
- "2 days": Between 36 and 72 hours ago.
- "n days": Less than 7 days ago.
- "1 week": Less than 11 days ago.
- "2 weeks": Between 11 and 14 days ago.
- "n weeks": Less than 9 weeks ago.
- "n months": Less than 19 months ago.
- "1 year": Less than 2 years ago.
- "n years": Over two years.
Could probably use some tweaking, and definitely localization, but hopefully
it's useful. To use it, reference src/NSDate+HumanInterval.h and
src/NSDate+HumanInterval.m in your Xcode project, then add:
#import "NSDate+HumanInterval.h"
Then just call humanIntervalSinceNow on an NSDate object:
NSString *reltime = [self.buzzer.when humanIntervalSinceNow];
If you'd like to run the unit tests, open NSDate+HumanInterval.xcodeproj in
Xcode and build the "UnitTesting" target.
Copyright © 2010 by David E. Wheeler. Some rights reserved.
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