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POIOS 4.1 NSDateComponents giving differing date then later versions of IOS
 

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  1. POIOS 4.1 NSDateComponents giving differing date then later versions of IOS
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    <p>I have created an NSDate category that would give me a "last sunday" date.</p> <pre><code>+(NSDate *)sunday{ // I need 2 dates yesterday and today NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar]; NSDate *now = [NSDate date]; NSLog(@"Current date: %@", now); NSDateComponents *components = [gregorian components:(NSWeekCalendarUnit | NSWeekdayCalendarUnit ) fromDate:now]; [components setWeekday:1]; //Monday [components setHour:0]; //8a.m. [components setMinute:0]; [components setSecond:0]; NSLog(@"Sunday: %@", [gregorian dateFromComponents:components]); return [gregorian dateFromComponents:components]; } </code></pre> <p>This give me a couple different dates:</p> <p>IOS 4.2 </p> <pre><code>Sunday: 0001-08-28 05:50:36 +0000 </code></pre> <p>IOS 4.1 </p> <pre><code>Sunday: 0001-09-04 05:50:36 GMT </code></pre> <p><strong>Notice</strong> That IOS 4.1 give me a future date, whereas IOS 4.2 gives me a previous date, which is what I want.</p> <p>I understand that the year is 0001 is shown, but the year is not used. </p> <p>I have not yet found where others are having this same issue, so perhaps I'm doing something wrong. But, I'm not sure what that is. Has anyone seen this before? </p> <p><strong>EDIT</strong> Here is my working code:</p> <pre><code>+(NSDate *)sunday{ NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar]; NSDate *now = [NSDate date]; NSDateComponents *components = [gregorian components:(NSWeekCalendarUnit | NSYearCalendarUnit | NSWeekdayCalendarUnit ) fromDate:now]; [components setWeekday:[gregorian firstWeekday]]; //Sunday [components setHour:0]; [components setMinute:0]; [components setSecond:0]; return [gregorian dateFromComponents:components]; } </code></pre> <p>Thanks!!</p>
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