在目标C中比较时间和日期 [英] Comparing time and date in objective C

问题描述

这是最常用的方法在预订/预订应用程序中查看是否已经占用了特定的时间段。

解决方案

尝试比较..

  NSDateFormatter * dateFormat = [[NSDateFormatter alloc] init]; 
 [dateFormat setDateFormat：@MM / dd / yyyy hh：mm：ss aa]; 
 
 
 NSDate * dateOne = [dateFormat dateFromString：@01/09/2011 11:12:10 AM]; 
 NSDate * dateTwo = [NSDate date]; 
 
开关（[dateOne比较：dateTwo]）{
 case NSOrderedAscending：
 // NSLog（@NSOrderedAscending）; 
 break; 
 case NSOrderedSame：
 // NSLog（@NSOrderedSame）; 
 {
 break; 
 case NSOrderedDescending：
 // NSLog（@NSOrderedDescending）; 
 break; 
} 
 
 [dateFormat release]; 
  

How do I compare in objective C to see if a certain time and date period overlaps another that is already in a plist for example?

This is most commonly used in booking/reservation apps to see if that particular timeslot has been taken up etc.

解决方案

Try this to Compare ..

NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
            [dateFormat setDateFormat:@"MM/dd/yyyy hh:mm:ss aa"];


NSDate *dateOne=[dateFormat dateFromString:@"01/09/2011 11:12:10 AM" ];
        NSDate *dateTwo = [NSDate date];

        switch ([dateOne compare:dateTwo]){
            case NSOrderedAscending:
                //NSLog(@"NSOrderedAscending");
                break;
            case NSOrderedSame:
                //NSLog(@"NSOrderedSame");
             {
break;
            case NSOrderedDescending:
                //NSLog(@"NSOrderedDescending");
                break;
        }

[dateFormat release];

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