Adjust UILabel height to text

I've just put this in a playground and it works for me.

Updated for Swift 4.0

import UIKit func heightForView(text:String, font:UIFont, width:CGFloat) -> CGFloat{    let label:UILabel = UILabel(frame: CGRectMake(0, 0, width, CGFloat.greatestFiniteMagnitude))    label.numberOfLines = 0    label.lineBreakMode = NSLineBreakMode.byWordWrapping    label.font = font    label.text = text    label.sizeToFit()    return label.frame.height}let font = UIFont(name: "Helvetica", size: 20.0)var height = heightForView("This is just a load of text", font: font, width: 100.0)

Swift 3:

func heightForView(text:String, font:UIFont, width:CGFloat) -> CGFloat{    let label:UILabel = UILabel(frame: CGRect(x: 0, y: 0, width: width, height: CGFloat.greatestFiniteMagnitude))    label.numberOfLines = 0    label.lineBreakMode = NSLineBreakMode.byWordWrapping    label.font = font    label.text = text    label.sizeToFit()    return label.frame.height}

If you are using AutoLayout, you can adjust UILabel height by config UI only.

For iOS8 or above

• Set constraint leading/trailing for your UILabel
• And change the lines of UILabel from 1 to 0

For iOS7

• First, you need to add contains height for UILabel
• Then, modify the Relation from Equal to Greater than or Equal

• Finally, change the lines of UILabel from 1 to 0

Your UILabel will automatically increase height depending on the text

I create this extension if you want

extension UILabel {    func setSizeFont (sizeFont: CGFloat) {        self.font =  UIFont(name: self.font.fontName, size: sizeFont)!        self.sizeToFit()    }}