找到两个日期之间的确切差异 [英] Find exact difference between two dates

问题描述

我希望在日期比较中做一些更改。

I want some changes in the date comparison.

在我的申请中，我比较两个日期并获得天数，但如果只有一天差异系统显示0作为天数的差异。

In my application I am comparing two dates and getting difference as number of Days, but if there is only one day difference the system shows me 0 as a difference of days.

NSDateFormatter *date_formater=[[NSDateFormatter alloc]init];
[date_formater setDateFormat:@"MMM dd,YYYY"];

NSString *now=[NSString stringWithFormat:@"%@",[date_formater stringFromDate:[NSDate date]]];
LblTodayDate.text = [NSString stringWithFormat:@"%@",[NSString stringWithFormat:@"%@",now]];

NSDate *dateofevent = [[NSUserDefaults standardUserDefaults] valueForKey:@"CeremonyDate_"];
NSDate *endDate =dateofevent;

NSDate *startDate = [NSDate date];

gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
unsigned int unitFlags = NSDayCalendarUnit;

NSDateComponents *components = [gregorian components:unitFlags fromDate:startDate toDate:endDate options:0];

int days = [components day];

我找到了一些解决方案如果我们把时间作为00:00:00进行比较那么它会告诉我正确答案，我是对还是错，我不知道。

I found some solutions that If we make the time as 00:00:00 for comparison then it will show me proper answer, I am right or wrong I don't know.

推荐答案

我通常会发现秒数差异并计算 ceil（diffInSeconds / 86400）。

I usually find out difference in seconds and calculate ceil(diffInSeconds / 86400).

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