How to get NSString size when NSString includes emojis?

Question

I am currently using

- (CGSize)sizeWithFont:(UIFont *)font constrainedToSize:(CGSize)size lineBreakMode:(UILineBreakMode)lineBreakMode

to

Answer 1

I struggled with this same thing for a while, attempting multiple solutions including the accepted answer, which did not work for me. I solved this by creating an NSAttributed String with the text, then using the NSAttributedString method boundingRectWithSize:options:context: to get the size of the string.

NSString *text = //some text
CGFloat maxSize = //text size constraints

NSAttributedString *attributedString = [[NSAttributedString alloc] initWithString:text
                                                                       attributes:@{NSFontAttributeName : font
                                                                                    }];

CGRect boundingRect = [attributedString boundingRectWithSize:maxSize options:NSStringDrawingUsesLineFragmentOrigin context:nil];
CGSize fitSize = boundingRect.size;