How to compare time

Question

How to compare time in Objective C?

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

Answer 1

Theres a perfect formula for this. Just for future references

Below is the sample code :

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

NSString *startTime = @"21:00";
NSString *endTime = @"07:00";

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

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

int nowTime = (int)((currHr*60)+currtMin);

if(nowTime >= formStTime && nowTime <= formEnTime) {
    // Do Some Nasty Stuff..
}