UILabel Word Wrap / Character Wrap

Question

I have a UILabel with the lineBreakMode set to UILineBreakModeWordWrap. This works fine, except when I have a long slab of text with no spaces. In this case it does not wrap the long slab of text but instead just cuts it off once it reaches the right-hand end of the UILabel frame. How can I tell the UILabel that it should wrap on a character boundary in this situation only (essentially equivalent to the UILineBreakModeCharacterWrap setting, but only for those long slabs of spaceless text).

Thanks in advance!

Solution 1

For anyone else having this same issue, I ended-up solving it by using a UITextView instead of a UILabel. This was the best solution for two reasons:

1. It doesn't require any custom behaviour to determine whether the text contains spaces and change the line break mode of the UILabel to/from word/character wrap.

2. More importantly, there is an edge case whereby you may have normal words (that you want to wrap on word boundaries) plus extra long text (which you need to wrap on character boundaries). Short of writing some kind of logic to insert a space into that extra long text (at the correct position) to force a "fake word wrap" I can't see any way to handle wrapping on words and characters, depending on the situation, within the one UILabel. The UITextView handles this situation automatically, breaking on word boundaries or character boundaries as necessary.

For specifics on how I am doing this, I have a one line UITextView with editing and scrolling disabled. I also set the .contentInset to remove the padding making it look (to the unsuspecting eye) just like a UILabel. I am then using the sizeWithFont:constrainedToSize:lineBreakMode: method to determine the frame of the rendered text, and adjusting the frame of the UITextView accordingly so that it exactly fits the text.

Hope that this helps!

Solution 2

One way to do this is to set the Lines property in IB.

or from code do this -

textLabel.lineBreakMode = UILineBreakModeWordWrap;
textLabel.numberOfLines = 3;

So when you set the number of lines as 3 the text wraps till that many lines are occupied.

Comments

[deanWombourne]

The OP specifically wants 'word wrap' which won't wrap if he has a single word (for example 'Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch' which is wider than the text box), no matter how many lines you give it :)