iphone - 如何在 iphone sdk 4.0 及更高版本中获取两个日期之间的 Datewithtime (am/pm) 差异

Question

我想在 iPhone SDK 中获取 2 个日期和日期之间的时差。

Answer 1

试试这个更新

            NSString *strDatehere = @"22/11/2012 11:12:00 PM";
            NSDateFormatter *heredateFormatter = [[[NSDateFormatter alloc] init] autorelease];
            [heredateFormatter setDateFormat:@"dd/MM/yyyy hh:mm:ss a"]; // set date formate with your dates

            NSDate *datehere = [heredateFormatter dateFromString: strDatehere];

            NSTimeInterval timeDifference = [[NSDate date] timeIntervalSinceDate:datehere];

            double minutes = timeDifference / 60;

            double hours = minutes / 60;

            double seconds = timeDifference;

            double days = minutes / 1440;


            NSLog(@"%.0f, %.0f, %.0f, %.0f", days, hours, minutes, seconds);

Answer 2

我通常以秒为单位找出差异并计算 ceil(diffInSeconds/86400)。

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NSDate *endDate=[dateFormat dateFromString:now];
NSTimeInterval interval = [YourDate timeIntervalSinceDate:endDate];
int diff=interval/86400;//for converting seconds into days.