How can I prevent sizeToFit from changing the UILabel width?

Question

I have a UILabel right now and the UILabel.text value changes regularly.

The problem I am having is that if each time the UILabel.text value changes, the UILabel width changes according to the content of the label.

How can I fix this? This is my code I have right now:

outputLabel.text = errorMessage;
outputLabel.hidden = NO;
[outputLabel sizeToFit];

UPDATE The reason I am using sizeToFit is because I need the height to automatically change.

Thanks,

Peter

Answer 1

you can create a category or a subclass of UILabel and add this method to resize only the height of the label depending to the input text

- (void)heightToFit {

    CGSize maxSize = CGSizeMake(self.frame.size.width, CGFLOAT_MAX);
    CGSize textSize = [self.text sizeWithFont:self.font constrainedToSize:maxSize lineBreakMode:self.lineBreakMode];

    CGRect labelRect = self.frame;
    labelRect.size.height = textSize.height;
    [self setFrame:labelRect];
}

and use it instead sizeToFit

Answer 2

Use [UILabel sizeThatFits:] with a CGSize with infinite height like (320, 10000).

Answer 3

I subclassed UILabel and overrode the sizeThatFits method to look like this:

- (CGSize)sizeThatFits:(CGSize)size
{
    CGSize res = [super sizeThatFits:size];

    return CGSizeMake(size.width, res.height);
}

Then if I add the label into a nib I place a UILabel from the object library. After that I make sure to set the class of the placed label to my custom class instead of the default of UILabel.

It basically just overrides the new width with the original width so it never changes width, but dynamically changes height.