How to give dynamic height to UILabel programmatically in Swift?

Question

I have taken UIlabel which are generated dynamically using for loop, each type diff text is assign in label, I want to give UILabel size dynamically depending on text.

Is there any easy solution in to do that in Swift?

Answer 1

let label:UILabel = UILabel(frame: CGRectMake(x, y, width, height))
label.numberOfLines = 4
label.lineBreakMode = NSLineBreakMode.ByWordWrapping
let font = UIFont(name: "Helvetica", size: 20.0)
label.font = font
label.text = "Whatever you want the text enter here"
label.sizeToFit()

If you want to set numberOfLines according to the content of text,give your maximum lines.That is very important here.

Answer 2

get a label height depending on it's text, font, and width you assign to it:

func rectForText(text: String, font: UIFont, maxSize: CGSize) -> CGSize {
        let attrString = NSAttributedString.init(string: text, attributes: [NSFontAttributeName:font])
        let rect = attrString.boundingRectWithSize(maxSize, options: NSStringDrawingOptions.UsesLineFragmentOrigin, context: nil)
        let size = CGSizeMake(rect.size.width, rect.size.height)
        return size
    }

let labelSize = rectForText("your text here", font: UIFont.systemFontOfSize(your font), maxSize: CGSizeMake(your label width,999))
let labelHeight = labelSize.height //here it is!