How to compare time

Question

How to compare time in Objective C?

if (nowTime > 9:00 PM) && (nowTime < 7:00 AM) 
{
  doSomething;
}

Answer 1

I used the Answer Given above by rye. I just had to convert my 7:00 AM and 9:00 PM to 24 hours. Here's the method I used

/**
Willl return YES if the Restaurant is OPEN at the Moment else NO
*/


-(BOOL) isShopOpen:(NSString *) startTime closeTime:(NSString *) endTime{

NSDateComponents *components = [[NSCalendar currentCalendar] components:NSHourCalendarUnit | NSMinuteCalendarUnit | NSSecondCalendarUnit fromDate:[NSDate date]];
NSInteger currHr = [components hour];
NSInteger currtMin = [components minute];

int stHr ;
int stMin ;
int enHr ;
int enMin ;


if([startTime containsString:@"PM"]){
    startTime = [startTime stringByReplacingOccurrencesOfString:@" PM" withString:@""];

    stHr=[[[startTime componentsSeparatedByString:@":"] objectAtIndex:0] intValue];
    stHr=stHr+12;

    stMin = [[[startTime componentsSeparatedByString:@":"] objectAtIndex:1] intValue];

}else{
    startTime = [startTime stringByReplacingOccurrencesOfString:@" AM" withString:@""];

    stHr=[[[startTime componentsSeparatedByString:@":"] objectAtIndex:0] intValue];
    stMin = [[[startTime componentsSeparatedByString:@":"] objectAtIndex:1] intValue];
}

if([endTime containsString:@"PM"]){
    endTime = [endTime stringByReplacingOccurrencesOfString:@" PM" withString:@""];

    enHr=[[[endTime componentsSeparatedByString:@":"] objectAtIndex:0] intValue];
    enHr=enHr+12;

    enMin = [[[startTime componentsSeparatedByString:@":"] objectAtIndex:1] intValue];

}else{
    endTime = [endTime stringByReplacingOccurrencesOfString:@" AM" withString:@""];

    enHr=[[[endTime componentsSeparatedByString:@":"] objectAtIndex:0] intValue];
    enMin = [[[startTime componentsSeparatedByString:@":"] objectAtIndex:1] intValue];
}

int formStTime = (stHr*60)+stMin;
int formEnTime = (enHr*60)+enMin;

int nowTime = (currHr*60)+currtMin;

if(nowTime >= formStTime && nowTime <= formEnTime) {
    // Do Some Nasty Stuff..
    return YES;
}else{
    return NO;
}

}