Adjust UILabel height to text

Question

I have some labels which I want to adjust their height to the text  this is the code I wrote for this now  func heightForView text String  font UIFont  width CGFloat  - gt  CGFloat      let label UILabel   UILabel frame  CGRectMake 0  0  width  CGFloat max       label numberOfLines   0     label lineBreakMode   NSLineBreakMode ByWordWrapping     label font   font     label text   text      label sizeToFit       return label frame height     EDIT   The issue was not in this piece of code  so my fix is in the question itself  It might still be useful for others

User · Answer

I have strong working solution   in layoutSubviews        title frame   CGRect x  0  y  0  width  bounds width  height  0       title sizeToFit        title frame size    title bounds size   in text setter        title text   newValue     setNeedsLayout     UPD  of course with this UILabel settings        title lineBreakMode    ByWordWrapping      title numberOfLines   0

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Following on  Anorak answer  i added this extension to String and sent an inset as a parameter  because a lot of times you will need a padding to your text  Anyway  maybe some you will find this usefull   extension String        func heightForWithFont font  UIFont  width  CGFloat  insets  UIEdgeInsets  - gt  CGFloat            let label UILabel   UILabel frame  CGRectMake 0  0  width   insets left   insets right  CGFloat max           label numberOfLines   0         label lineBreakMode   NSLineBreakMode ByWordWrapping         label font   font         label text   self          label sizeToFit           return label frame height   insets top   insets bottom

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Swift 4 0  self messageLabel   UILabel frame  CGRect x  70  y  60  width UIScreen main bounds width - 80  height  30   messageLabel text   message  messageLabel lineBreakMode    byWordWrapping   in versions below swift 3  messageLabel lineBreakMode   NSLineBreakMode ByWordWrapping      messageLabel numberOfLines   0   To write any number of lines within a label scope  messageLabel textAlignment    center  messageLabel textColor   UIColor white  messageLabel font   messageLabel font withSize 12   messageLabel sizeToFit        Blockquote NSParagraphStyle LineBreakMode  apply to entire paragraphs  not words within paragraphs This property is in effect both during normal drawing and in cases where the font size must be reduced to fit the label   s text in its bounding box  This property is set to byTruncatingTail by default    This link describes the storyboard way of doing the same

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I create this extension if you want  extension UILabel       func setSizeFont  sizeFont  CGFloat            self font    UIFont name  self font fontName  size  sizeFont           self sizeToFit

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Just by setting   label numberOfLines   0   The label automatically adjusts its height based upon the amount of text entered

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To make label dynamic in swift   don t give height constarint  and in storyboard make label number of lines  0 also give bottom constraint  and this is the best way i am handling dynamic label as per their content size

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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

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The solution suggested by Anorak as a computed property in an extension for UILabel   extension UILabel   var optimalHeight   CGFloat               get                       let label   UILabel frame  CGRectMake 0  0  self frame width  CGFloat max               label numberOfLines   0             label lineBreakMode   self lineBreakMode             label font   self font             label text   self text              label sizeToFit                return label frame height                      Usage    self brandModelLabel frame size height   self brandModelLabel optimalHeight

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In swift 4 1 and Xcode 9 4 1  Only 3 steps  Step 1     To calculate height for label based on text size and width func heightForView text String  font UIFont  width CGFloat  - gt  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     Step 2     Call this function let height   heightForView text   This is your text   font  UIFont systemFont ofSize  17   width  300  print height   Output   41 0   Step 3     This is your label let proNameLbl   UILabel frame  CGRect x  0  y  20  width  300  height  height   proNameLbl text    This is your text  proNameLbl font   UIFont systemFont ofSize  17  proNameLbl numberOfLines   0 proNameLbl lineBreakMode    byWordWrapping infoView addSubview proNameLbl

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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  - gt  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  - gt  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

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Here is how to calculate the text height in Swift  You can then get the height from the rect and set the constraint height of the label or textView  etc   let font   UIFont name   HelveticaNeue   size  25   let text    This is some really long text just to test how it works for calculating heights in swift of string sizes  What if I add a couple lines of text    let textString   text as NSString  let textAttributes    NSFontAttributeName  font   let textRect   textString boundingRectWithSize CGSizeMake 320  2000   options   UsesLineFragmentOrigin  attributes  textAttributes  context  nil

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You can also use sizeThatFits function   For example   label sizeThatFits superView frame size  height

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based on Anorak s answer  I also agree with  Zorayr s concern  so I added a couple of lines to remove the UILabel and return only the CGFloat  I don t know if it helps since the original code doesn t add the UIabel  but it doesn t throw error  so I m using the code below   func heightForView text String  font UIFont  width CGFloat  - gt  CGFloat       var currHeight CGFloat       let label UILabel   UILabel frame  CGRectMake 0  0  width  CGFloat max       label numberOfLines   0     label lineBreakMode   NSLineBreakMode ByWordWrapping     label font   font     label text   text     label sizeToFit        currHeight   label frame height     label removeFromSuperview        return currHeight

User · Answer

just call this method where you need dynamic Height for label   func getHeightforController view  AnyObject  - gt  CGFloat       let tempView  UILabel   view as  UILabel     var context  NSStringDrawingContext   NSStringDrawingContext       context minimumScaleFactor   0 8      var width  CGFloat   tempView frame size width      width     UIScreen mainScreen   bounds width  320  width      let size  CGSize   tempView text  boundingRectWithSize CGSizeMake width  2000   options NSStringDrawingOptions UsesLineFragmentOrigin  attributes   NSFontAttributeName  tempView font   context  context  size as CGSize      return size height

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The Swift 4 1 extension method to calculate label height   extension UILabel        func heightForLabel text String  font UIFont  width CGFloat  - gt  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

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Swift 4 0  Instead of calculating the text label height  I just resize the label after inserting the  dynamic  text   Assuming that myLabel is the UILabel in question   let myLabel   UILabel frame  CGRect x  0  y  0  width   somewidth   height   placeholder  e g  20    myLabel numberOfLines   0 myLabel lineBreakMode    byWordWrapping       And now comes the fun part   var myLabelText  String           didSet         myLabel text   myLabelText       myLabel sizeToFit

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Swift 5  XCode 11 storyboard way  I think this works for iOS 9 and higher  You want for example  Description  label to get the dynamic height  follow the steps   1  Select description label -  Go to Attributes Inspector  pencil icon   set  Lines  0 Line Break  Word Wrap  2  Select your UILabel from storyboard and go to Size Inspector  ruler icon    3  Go down to  Content Compression Resistance Priority to 1 for all other UIView  lables  buttons  imageview  etc  components that are interacting with your label   For example  I have UIImageView  Title Label  and Description Label vertically in my view  I set Content Compression Resistance Priority to UIImageView and title label to 1 and for description label to 750  This will make a description label to take as much as needed height

[ios] Adjust UILabel height to text

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