Future Relative dates human readable form - ios

Question

How can I output human readable dates like turn NSDATE to human readable form like Tomorrow, one week from now, 1 month from now , etc?
For example if the current time is January 19, 2012 7 am
and the input date is January 20, 2012 9am
then the function should out Tomorrow at 9am.
I found how to do this with past dates online but not with future dates.
Also the functions I found online were not specific. Any help would be appreciated! thanks

Answer 1

You need to use an NSDateFormatter. From the docs:
setDoesRelativeDateFormatting: Specifies whether the receiver uses
phrases such as “today” and “tomorrow” for the date component.
- (void)setDoesRelativeDateFormatting:(BOOL)b
Parameters b YES to specify that the receiver should use relative date
formatting, otherwise NO. Discussion If a date formatter uses relative
date formatting, where possible it replaces the date component of its
output with a phrase—such as “today” or “tomorrow”—that indicates a
relative date. The available phrases depend on the locale for the date
formatter; whereas, for dates in the future, English may only allow
“tomorrow,” French may allow “the day after the day after tomorrow,”
as illustrated in the following example.
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setTimeStyle:NSDateFormatterNoStyle];
[dateFormatter setDateStyle:NSDateFormatterMediumStyle];
NSLocale *frLocale = [[NSLocale alloc] initWithLocaleIdentifier:#"fr_FR"];
[dateFormatter setLocale:frLocale];
[dateFormatter setDoesRelativeDateFormatting:YES];
NSDate *date = [NSDate dateWithTimeIntervalSinceNow:60*60*24*3];
NSString *dateString = [dateFormatter stringFromDate:date];
NSLog(#"dateString: %#", dateString);
// Output
// dateString: après-après-demain