在iphone里面判断日期是不是在两个日期之间

Question

我可以比较日期：设定Date1 = 2011-10-14和Date2 =2011-10-20。但是我想实现的是判断15号是否在Date1和Date2之间。代码如下：

if ( [date compare:Date1] == NSOrderedDescending && [date compare:Date2] ==    

NSOrderedAscending) {              //******     }

但是没有成功，请高手指点如何实现。谢谢！

Answer 1

试试下面的代码：其中Date1和Date2是判断的范围

NSCalendar *calendar= [NSCalendar currentCalendar];
NSInteger desiredComponents= (NSDayCalendarUnit | NSMonthCalendarUnit);
NSDateComponents *firstComponents= [calendar components:desiredComponents fromDate:Date1];
NSDateComponents *secondComponents= [calendar components:desiredComponents fromDate:Date2];
NSDate *firstWOYear= [calendar dateFromComponents:firstComponents];
NSDate *SecondWOYear = [calendar dateFromComponents:secondComponents];
NSComparisonResult result= [firstWOYear compare:SecondWOYear];
if (result== NSOrderedAscending) {  

} else if (result== NSOrderedDescending) { 

}  else {  

}