相关疑难解决方法(0)

可能重复:
如何比较两个日期,返回天数.

我有两个日期(作为"yyyy-mm-dd"形式的NSString),例如:

NSString *start = "2010-11-01";
NSString *end = "2010-12-01";

我想实施:

- (int)numberOfDaysBetween:(NSString *)startDate and:(NSString *)endDate {

}

谢谢!

我想计算两个NSDates之间的月数和天数.我有正确计算的天数,但如何将其转换为月份和剩余天数？

这就是我用来计算总天数的方法,它正常工作.

- (NSInteger) numberOfDaysUntil {
    NSDate *fromDate;
    NSDate *toDate;

    NSCalendar *calendar = [NSCalendar currentCalendar];

    [calendar rangeOfUnit:NSDayCalendarUnit startDate:&fromDate interval:NULL forDate:[self dateOnly:[NSDate date]]];
    [calendar rangeOfUnit:NSDayCalendarUnit startDate:&toDate interval:NULL forDate:[self dateOnly:self]];

    NSDateComponents *difference = [calendar components:NSDayCalendarUnit fromDate:fromDate toDate:toDate options:0];
    return [difference day];
}