Question

I was wondering how I could use NSDate within an if statement – I want to update a UILabel depending what the date is, currently I have the following code to determine the date but don’t know how to actually get this within an if statement.

NSDate* date = [NSDate date];
    NSDateFormatter* formatter = [[[NSDateFormatter alloc] init] autorelease];
    [formatter setDateFormat:@"dd/MM/yyyy"];

    NSString *dateString = [formatter stringFromDate:date];
    dateLabel.text = dateString;

    if (dateString  == @"25/05/2012") {
        NSLog(@"It's the 25th!");
    }
    else {
        NSLog(@"Not it's not...");
    }

Thanks a lot!

Answer 1

If you want to compare two strings use isEqualToString:

if ([dateString isEqualToString:@"25/05/2012"]) {
    NSLog(@"It's the 25th!");
}
else {
    NSLog(@"Not it's not...");
}

isEqualToString: in NSString class reference

if you want to compare two NSDate use isEqualToDate:

[date1 isEqualToDate:date2]

isEqualToDate: in NSDate class reference