iOS: Compare Dates

iOS: Compare Dates

- (BOOL) validateDateWithCurrentDate
{
    NSDateFormatter *dateFormatter = [NSDateFormatter new];
    [dateFormatter setDateFormat:@"MM/dd/yyyy"];
    [dateFormatter setTimeZone:[NSTimeZone timeZoneWithName:@"GMT"]];//Set timezone to match with [NSDate date] format
    _chosenDate = [dateFormatter dateFromString:_labelDateOfBirthSeleced.text];

    NSComparisonResult dateComparison = [[NSCalendar currentCalendar] compareDate:[NSDate date]
                                                                           toDate:_chosenDate
                                                                toUnitGranularity:NSCalendarUnitDay];//dont compare time factor
    
    return dateComparison == NSOrderedDescending;//NSOrderedDescending -> _chosenDate is older than current date
}