本文介绍了如何比较两个日期，返回天数的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
如何比较两个日期返回天数.例如:缺席 X 天的杯赛.看看我的代码.
how can I compare two dates return number of days. Ex: Missing X days of the Cup. look my code.
NSDateFormatter *df = [[NSDateFormatter alloc]init];
[df setDateFormat:@"d MMMM,yyyy"];
NSDate *date1 = [df dateFromString:@"11-05-2010"];
NSDate *date2 = [df dateFromString:@"11-06-2010"];
NSTimeInterval interval = [date2 timeIntervalSinceDate:date1];
//int days = (int)interval / 30;
//int months = (interval - (months/30)) / 30;
NSString *timeDiff = [NSString stringWithFormat:@"%dMissing%d days of the Cup",date1,date2, fabs(interval)];
label.text = timeDiff; // output (Missing X days of the Cup)
推荐答案
来自 苹果的例子，基本上用的是NSCalendar:
From Apple's example, basically use an NSCalendar:
NSDate * date1 = <however you initialize this>;
NSDate * date2 = <...>;
NSCalendar *gregorian = [[NSCalendar alloc]
initWithCalendarIdentifier:NSGregorianCalendar];
NSUInteger unitFlags = NSMonthCalendarUnit | NSDayCalendarUnit;
NSDateComponents *components = [gregorian components:unitFlags
fromDate:date1
toDate:date2 options:0];
NSInteger months = [components month];
NSInteger days = [components day];
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