iOS: UIButton resize according to text length

Question

In interface builder, holding Command + = will resize a button to fit its text. I was wondering if this was possible to do programmatically before the

Answer 1

I have some additional needs related to this post that sizeToFit does not solve. I needed to keep the button centered in it's original location, regardless of the text. I also never want the button to be larger than its original size.

So, I layout the button for its maximum size, save that size in the Controller and use the following method to size the button when the text changes:

+ (void) sizeButtonToText:(UIButton *)button availableSize:(CGSize)availableSize padding:(UIEdgeInsets)padding {    

     CGRect boundsForText = button.frame;

    // Measures string
    CGSize stringSize = [button.titleLabel.text sizeWithFont:button.titleLabel.font];
    stringSize.width = MIN(stringSize.width + padding.left + padding.right, availableSize.width);

    // Center's location of button
    boundsForText.origin.x += (boundsForText.size.width - stringSize.width) / 2;
    boundsForText.size.width = stringSize.width;
    [button setFrame:boundsForText];
 }