>
>
>
>I'm getting stuck trying to format a variable quantity of elapsed time
>for the user's locale. The NSDateFormatter class seems to only provide
>formats for actual times (e.g. "1:30 AM"). What I need to do is turn 1
>hour and 30 minutes into "1:30" for my US English settings, and the
>appropriate string for other locales.
Hi Dennis
If you want to have full control of the output of an NSDateFormatter
object and you do not have to support anything earlier than Snow Leopard,
I strongly recommend that you use -[NSDateFormatter
dateFormatFromTemplate:options:locale:].
See the documentation of this method and check the link to the Unicode
Technical Standard #35. You can then ask for the exact time components you
need to print out.
However, if you need to target earlier OS'es that's doable also but you
need more work to accomplish the same thing, something like:
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setDateStyle:NSDateFormatterNoStyle]; // prevents the date
from being printed out
[formatter setTimeStyle:NSDateFormatterShortStyle]; // it will include
the AM/PM
However, you can look for occurrences of the AM/PM strings of a given
locale by sending -[NSDateFormatter AMSymbol] and -[NSDateFormatter
PMSymbol] and then deleted them from the time string with the appropriate
NSString methods.
[formatter release]; // shouldn't forget to release it when you're done
HTH
João
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