How to make NSStringDrawingContext shrink text?

Question

I\'m trying to use the attributed string API of iOS 6 to calculate the size of text and shrink the font size if necessary. However, I can\'t get it to work as the documentation

Answer 1

Just wanted to post this solution as I have been battling with this for a couple hours. I could never get the text area to scale down and would always have the last lines of text cut off.

The solution for me was to not add a context and just set it to nil. I got this when looking at the example on this site. https://littlebitesofcocoa.com/144-drawing-multiline-strings

Note after getting the size the box would draw at using

pageStringSize = [myString boundingRectWithSize:maxSize options:NSStringDrawingUsesLineFragmentOrigin attributes:attrsDictionary context:nil];

I still needed to loop through scaling down the font manually:

while (pageStringSize.size.height > 140 && scale > 0.5) {
            scale = scale - 0.1;
            font = [UIFont fontWithName:@"Chalkboard SE" size:24.0 *scale];
            attrsDictionary = [NSDictionary dictionaryWithObjectsAndKeys:font, NSFontAttributeName,[NSNumber numberWithFloat:1.0], NSBaselineOffsetAttributeName, nil];

            pageStringSize = [myString boundingRectWithSize:maxSize options:NSStringDrawingUsesLineFragmentOrigin attributes:attrsDictionary context:nil];

        }