UILabel垂直设置文本

Question

I have a UILabel that I want to expand vertically rather than horizontally after some maximumWidth. Currently I am trying to do this by doing the following:

    _caption.numberOfLines = 0;
    _caption.lineBreakMode = NSLineBreakByWordWrapping;

and then when I size I use sizeToFit

However, I always have a width that is much larger than my maximumWidth.

I tried using preferredMaxLayoutWidth but this did not work.

I could do a simple calculation by dividing the width by the maximumWidth that I want and then adjust the height accordingly but I'm wondering if there is any way to do this automatically.

Answer 1

You need to use NSLineBreakByCharWrapping instead of NSLineBreakByWordWrapping

_caption.lineBreakMode = NSLineBreakByCharWrapping

I had tested this using a simple label and storyboard and setting the constraints to top, left and width and here is the result