ios - How do I set adaptive multiline UILabel text?

Question

I have a UILabel named titleLabel in my storyboard nib set to its default height. I want it to programatically expand in height to fit it's content. Here is what I have tried so far:

// just setting content
titleLabel.text = "You don't always know what you are getting with mass-market cloud computing services. But with SimpliCompute, the picture is clear. SimpliCompute gives you powerful virtual servers you can deploy using just your web browser. That’s enterprise grade technology you can deploy and control on-the-fly."

titleLabel.numberOfLines = 0

titleLabel.preferredMaxLayoutWidth = 700

titleLabel.lineBreakMode = NSLineBreakMode.ByWordWrapping

titleLabel.sizeToFit()

None of this works for me in any combination! I always only see one line of text in my UILabel. What am I doing wrong?

I absolutely need the text content to be variable.

Answer 1

I kind of got things working by adding auto layout constraints:

But I am not happy with this. Took a lot of trial and error and couldn't understand why this worked.

Also I had to add to use titleLabel.numberOfLines = 0 in my ViewController