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Re: Compiler Warning: 'NSDate' may not respond to '+dateWithTimeInterval:sinceDate:'
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Re: Compiler Warning: 'NSDate' may not respond to '+dateWithTimeInterval:sinceDate:'


  • Subject: Re: Compiler Warning: 'NSDate' may not respond to '+dateWithTimeInterval:sinceDate:'
  • From: Philip Mobley <email@hidden>
  • Date: Fri, 26 Mar 2010 13:05:05 -0700

On Mar 26, 2010, at 1:23 AM, Alec Stewart wrote:

> This compiler warning " 'NSDate' may not respond to
> '+dateWithTimeInterval:sinceDate:' "is driving me up the wall.
>
> I don't understand why I am getting the warning because, by all indications,
> +dateWithTimeInterval:sinceDate: has not been deprecated.
>
> I would be extremely grateful for any insight.
>
>
> Here's my code:
>
>    NSDate *dateWithoutHundredths;
>
>    dateWithoutHundredths = [NSDate dateWithString:[NSString
> stringWithFormat:@"d-d-d d:d:d +0000", year, month, day,
> hour, minutes, seconds]];
>
>    NSTimeInterval hundredthsToAdd = (double)(hundredth / 100.0);
>
>    date = [NSDate dateWithTimeInterval:hundredthsToAdd
> sinceDate:dateWithoutHundredths]; //This is the line the warning shows up on

Tech notes say:

    + (id)dateWithTimeInterval:(NSTimeInterval)secondssinceDate:(NSDate *)date

Is only available in OS X 10.6 and higher.  If your compiler Base SDK is set for 10.5, then that is probably the issue.

As an alternative, you can use a 10.0 compatible function:

    - (id)initWithTimeInterval:(NSTimeInterval)seconds sinceDate:(NSDate *)refDate_______________________________________________

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References: 
 >Compiler Warning: 'NSDate' may not respond to '+dateWithTimeInterval:sinceDate:' (From: Alec Stewart <email@hidden>)

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