UILabel height depending on text

Question

I am getting data from JSON and it changes for each view so I need the labels to change their height depending on their content and also the rest of labels and buttons should move down. I am using sizeToFit but anything else moves and when I scroll it loses its height and goes to 1 line again. My labels have 0 lines in storyboard.

@IBOutlet weak var titulares: UILabel!
@IBOutlet weak var scroller: UIScrollView!
@IBOutlet weak var imagen: UIImageView!
@IBOutlet weak var estilo: UILabel!
@IBOutlet weak var historia: UILabel!

override func viewDidLoad() {
    super.viewDidLoad()

// I get JSON Data

self.historia.sizeToFit()
self.titulares.sizeToFit()
self.estilo.sizeToFit()

Answer 1

Use autolayout from the storyboard, press on a label and then in the right bottom side of the screen, you have the "Add new constrains" button. Use it to set a spacing from a view to it's neighbors

https://developer.apple.com/library/tvos/documentation/UserExperience/Conceptual/AutolayoutPG/index.html