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?

Yes,I have use it in stroryBoard , But dont have use it programatically yet, — Sandesh Sardar, Jul 05 '15 at 09:21

score 11 · Answer 1 · answered Jul 05 '15 at 09:37

11

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.

answered Jul 05 '15 at 09:37

user3182143

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what should I pass in "heigh"? – Sandesh Sardar Jul 05 '15 at 10:29
1

You can pass any value to "height" since sizeToFit() function will again adjust the height to fit content. – Amr Hossam Jul 05 '15 at 10:54

score 5 · Answer 2 · answered Nov 04 '15 at 08:29

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!

This worked great for me! I used the same code just updated for Swift 3 — Simon, Dec 02 '16 at 22:50
@May Phyu I just edited it with an update, should be here when it goes through review, if you still need it! — Josh Heald, Jul 12 '17 at 10:47

score 5 · Answer 3 · answered Jul 28 '16 at 13:02

5

    myLabel.text = "Your Label Text Here"

    myLabel.textAlignment = .Natural

    myLabel.numberOfLines = 0

    myLabel.sizeToFit()

    myLabel.frame = CGRectMake(myLabel.frame.origin.x, myLabel.frame.origin.y, 280, myLabel.frame.height)

answered Jul 28 '16 at 13:02

Piyush Sanepara

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score 2 · Answer 4 · edited Dec 09 '19 at 02:20

2

let label:UILabel = UILabel()
label.textColor=UIColor.black
label.font = UIFont(name: "Halvetica", size: 17)
label.numberOfLines = 1

label.text = item.name
label.sizeToFit()

label.frame = CGRect(x: 5, y: imageView.frame.height+10, width: 50, height:label.frame.height)

edited Dec 09 '19 at 02:20

Raju Abe

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answered Nov 20 '17 at 07:24

D.l.Prasad

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i think its helpful to you – D.l.Prasad Nov 20 '17 at 07:29

score 2 · Answer 5 · answered Mar 07 '19 at 08:40

Create Extension to calculate the height of label following method return height of the label

 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: 60)

score 1 · Answer 6 · answered Jul 05 '15 at 12:17

let label = UILabel()
label.backgroundColor = UIColor.greenColor()
label.text = "Hello,world.\n Just a test."
let font = UIFont.systemFontOfSize(17.0)
label.font = font
label.numberOfLines = 0;
let text = label.text! as NSString
let size = text.sizeWithAttributes([NSFontAttributeName:font])
label.frame = CGRectMake(0, 0, size.width, size.height)

You can use Auto Layout in code. See Auto Layout Guide

score 1 · Answer 7 · answered Jun 09 '18 at 09:21

The Swift 4.1 extension method to calculate label height:

extension UILabel {

    func heightForLabel(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
    }

}

Refer: Adjust UILabel height to text

score 0 · Answer 8 · edited Nov 20 '17 at 11:47

NSString(string: "hello this is a string").boundingRect(
        with: CGSize(width: width, height: .greatestFiniteMagnitude),
        options: .usesLineFragmentOrigin,
        attributes: [.font: self],
        context: nil).size

Use this method to get determine the size for you string. Put maximum height and maximum width in CGSize(widhth,height) and it will return CGSize object containing height and width. Use it according with your scenario

How to give dynamic height to UILabel programmatically in Swift?

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