Question

I have an NSTextField which holds numeric (integer) values. There is a number formatter attached to the field. I want to display an empty field when the value of the field is set to 0 (zero). I think I tried every combination with the formatter, without luck so far. Can this be done?

Answer 1

I don’t think you can do that with NSNumberFormatter. But you could make a subclass and implement stringFromNumber: something like this:

-(NSString *)stringFromNumber:(NSNumber *)number {
    NSNumber *zero = [NSNumber numberWithInt:0];
    if ([number isEqualToNumber:zero])
        return @"";
    else
        return [super stringFromNumber:number];
}

EDIT:

I was wrong. You can do that with NSNumberFormatter:

[formatter setZeroSymbol:@""];