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Comparare data din NSDate,fara timp

diciu

Trimis: 07 Februarie 2011 03:00 PM

[ Ignoră ] [ # 16 ]

Member

Din: Bucuresti

Macuser din: 11.10.05

Exista functie built-in pentru calcul diferenta date (NSDateComponents fromDate toDate):

NSDate *now = [NSDate date];
    NSDate * then = [NSDate dateWithTimeInterval:-172800 sinceDate:now];
    NSDateComponents *compo = [[NSCalendar currentCalendar] components:NSDayCalendarUnit
                                                fromDate:now
                                                 toDate:then
                                                options:0];
    NSInteger days = [compo day];
    NSLog(@"Days diff: %d", days); 

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boboc

Trimis: 07 Februarie 2011 03:07 PM

[ Ignoră ] [ # 17 ]

Sr. Member

Din: Bucuresti

Macuser din: 22.09.06

Am rezolvat intr-un final asa:

NSDate *myDate = [dict objectForKey: @"date"];
            NSDateComponents *myComponent = [calendar components: unitFlags fromDate: myDate];
            NSDate *myDateFromComponent = [calendar dateFromComponents: myComponent];

            NSDate *now = [NSDate date];
            NSDateComponents *nowComponent = [calendar components: unitFlags fromDate: now];
            NSDate *nowDateFromComponent = [calendar dateFromComponents: nowComponent];
            
            if([nowDateFromComponent compare: myDateFromComponent] == NSOrderedAscending)
                [dict removeObjectForKey: @"overdue"];
            else
                [dict setObject: @"overdue" forKey:@"overdue"]; 

La mine NSDate afisat in NSLog imi apare ca GMT,e sigur vreun bug.
Am testat si NSDate *tomorrow = [now dateByAddingTimeInterval: ( 8 * 60 * 60)]; iar cand compar datele apar diferite.
La ora actuala acum 14:06 + 8 ore imi da exact GMT + 2.

Semnătură

A man should look for what is, and not for what he thinks should be.—Albert Einstein

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boboc

Trimis: 07 Februarie 2011 03:07 PM

[ Ignoră ] [ # 18 ]

Sr. Member

Din: Bucuresti

Macuser din: 22.09.06

ora actuala am vrut sa zic 16:06