I've been trying to figure this out for a while. I have set constraints for each label with background color set. I set each label's line break to word wrap, but that still doesn't work. What I'm looking for is a label wrap like word wrap whether or not that exists. Thanks.
Here is a slightly different approach. You can customize the appearance of each tagged word with an attributed string. This has some limitations but depending on your requirements it could be a good fit for you. The below code is an example pointing you in the correct direction, however you still might need to write additional code for correctly wrapping the spaces or recognizing touch events.
let tags = ["Outdoors", "Working", "Learning"].map { " \($0) " }
let text = tags.joined(separator: " ")
let ranges = tags.compactMap { text.range(of: $0) }
let attributedText = NSMutableAttributedString(string: text)
for range in ranges {
attributedText.addAttributes([.backgroundColor: UIColor.green], range: NSRange(range, in: text))
}
textView.attributedText = attributedText
I am trying to create a read more button at the end of my label. I want it to display 3 lines by default. I am coding in swift not objective c. Only when the user clicks the read more part of the label, should the label expand. It should look and work exactly like it does on instagram except on Instagram, it is in a tableview cell. My label and read more button will be in a scrollview. I have managed to get the expanding and contracting part working by adjusting the number of lines property of the label.
if descriptionLabel.numberOfLines == 0{
descriptionLabel.numberOfLines = 3
}else {
descriptionLabel.numberOfLines = 0
}
descriptionLabel.lineBreakMode = NSLineBreakMode.byWordWrapping
I am having problems with putting a "...more" at the end of the label and cutting the text off at the right place. I have looked at other people's responses to similar questions but nothing seems to work properly.
I can put a button over the last line of text so making the see more part of the label clickable also isn't the problem. The problem I am having is truncating the text at the right place and placing the see more text at the right place so that it displays.
I also want the read more button to only appear when it is necessary. I don't want to it appear when there are only 1-3 lines of text. This is also something I am having issues with.
I can't use this https://github.com/apploft/ExpandableLabel because it does not support scrollviews just tableviews.
the swift solution here didn't work: Add "...Read More" to the end of UILabel. It crashed the app.
Finally, the read more button should be in line with the last line of text and at the end of it. It would be an added benefit it this worked in a tableview cell as well!
I found ReadMoreTextView in Github, which is based on UITextView. The key method in this library is the following:
private func characterIndexBeforeTrim(range rangeThatFits: NSRange) -> Int {
if let text = attributedReadMoreText {
let readMoreBoundingRect = attributedReadMoreText(text: text, boundingRectThatFits: textContainer.size)
let lastCharacterRect = layoutManager.boundingRectForCharacterRange(range: NSMakeRange(NSMaxRange(rangeThatFits)-1, 1), inTextContainer: textContainer)
var point = lastCharacterRect.origin
point.x = textContainer.size.width - ceil(readMoreBoundingRect.size.width)
let glyphIndex = layoutManager.glyphIndex(for: point, in: textContainer, fractionOfDistanceThroughGlyph: nil)
let characterIndex = layoutManager.characterIndexForGlyph(at: glyphIndex)
return characterIndex - 1
} else {
return NSMaxRange(rangeThatFits) - readMoreText!.length
}
}
To display text like "xxxx...Read More", the library
Get how many characters could be display in the UITextView: Use NSLayoutManager.characterRange(forGlyphRange:, actualGlyphRange:)
Get the position of the last visible character and the width of "...Read More": Use NSLayoutManager.boundingRect(forGlyphRange glyphRange: NSRange, in container: NSTextContainer)
Get the character index before trimming: Use NSLayoutManager.characterIndexForGlyph(at glyphIndex: Int)
Replace text which should be trimmed with "...Read More": UITextStorage.replaceCharacters(in range: NSRange, with attrString: NSAttributedString)
Please check :
func addSeeMore(str: String, maxLength: Int) -> NSAttributedString {
var attributedString = NSAttributedString()
let index: String.Index = str.characters.index(str.startIndex, offsetBy: maxLength)
let editedText = String(str.prefix(upTo: index)) + "... See More"
attributedString = NSAttributedString(string: editedText)
return attributedString
}
You can use like :
let str = "Lorem Ipsum is simply dummy text of the printing and typesetting industry."
descriptionLabel.attributedText = addSeeMore(str: str, maxLength: 20)
// Output : Lorem Ipsum is simpl... See More
I have a convenience extension like this:
extension NSMutableAttributedString {
func append(string: String, attributes: [String: Any]) {
let attributed = NSMutableAttributedString(string: string)
let range = NSRange(location: 0, length: string.utf16.count)
for (attribute, value) in attributes {
attributed.addAttribute(attribute, value: value, range: range)
}
append(attributed)
}
}
I'm styling text in my UILabel thusly:
let normalAttributes = [NSForegroundColorAttributeName: darkGray]
let lightAttributes = [NSForegroundColorAttributeName: lightGray]
let text = NSMutableAttributableString()
text.append("Part 1", attributes: normalAttributes)
text.append("Part 2", attributes: lightAttributes)
All of this within a custom UITableViewCell class. What's happening is that the text is rendering with the base color in the NIB file, rather than the custom foreground color as per my attributed string - until I do something (like scroll around) that causes cell reuse, after which suddenly the colors render correctly.
I can't seem to find anything wrong with the lifecycle of the object, and there's no other place that's messing with this label. The label, fwiw, is an IBOutlet, so I'm not creating a new one each time or anything strange.
Turns out it's the same problem as:
Attributed string in tableviewcell not showing bold text until the cell is dequeued and reloaded
So it's solved by setting the font & color to nil on the label before setting the attributeText. Annoying, but easy enough to do that work-around.
As #Kiril Savino suggested. Setting up Font & Color of UILabel to nil is do easy work-around to get it done.
But one more thing I noticed today is Default Font used from Storyboard or XIB.
It should be System Font from Storyboard or XIB to make this work.
If you have used other Custom Font, then it won't work.
So, make sure Default Font of UILabel should System Font.
Thank you.
I am trying to set the line spacing in a UILabel as specified by Mike Slutsky here. It works correctly for the text I specify from the Storyboard. When I try to set the UILabel.text in code, it reverts back to the default line spacing. Can someone help me understand how to either:
Keep it from reverting to default, and use the settings I specified on the Storyboard or
Set the value in code.
I've seen a lot of examples around using NSAttribute and NSParagraph, but since it's now possible to set in the Storyboard, I would expect their may be a more straightforward answer. Many thanks for the help!
I set the "Height Multiple" as illustrated in the above link, and my only code is as follows:
import UIKit
class ViewController: UIViewController {
#IBOutlet weak var textView: UILabel!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
textView.text = "Some example text"
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
If I remove the textView.text line, it displays correctly, otherwise it's set back to the default line spacing (or Height Multiple).
Here's what's going on. You set things up in the storyboard with custom line spacing. This means, even though you may not know it, that in the storyboard you have set the label's attributedText.
But if you then come along and set the label's text in code, as you are doing, you throw away the attributedText and therefore all the attributes that it had. That is why, as you rightly say, things revert to the default look of the label.
The solution is: instead of setting the label's text, set its attributedText. In particular, fetch the label's existing attributedText; assign it into an NSMutableAttributedString so you can change it; replace its string while keeping the attributes; and assign it back to the label's attributedText.
So for example (I have called my label lab - your textView is a bad choice, as a text view is whole different animal):
let text = self.lab.attributedText
let mas = NSMutableAttributedString(attributedString:text)
mas.replaceCharactersInRange(NSMakeRange(0, count(mas.string.utf16)),
withString: "Little poltergeists make up the principle form of material manifestation")
self.lab.attributedText = mas
UILabel has
#property(nonatomic, copy) NSAttributedString *attributedText
since iOS 6.0,
This property is nil by default. Assigning a new value to this property also replaces the value of the text property with the same string data, albeit without any formatting information. In addition, assigning a new a value updates the values in the font, textColor, and other style-related properties so that they reflect the style information starting at location 0 in the attributed string.
If you set textView.text = "Some example text" again, you will loose your attributes. You should only pick one of them and not switching between them if you are sure what you are doing
Here is #matt 's answer in Obj. C:
NSMutableAttributedString *mas = [self.lab.attributedText mutableCopy];
[mas replaceCharactersInRange:NSMakeRange(0, [mas.string length])
withString:#"Little poltergeists make up the principle form of material manifestation"];
self.lab.attributedText = mas;
Hope this helps someone!
Swift 3
Just copy & execute this code to see result
let label = UILabel()
let stringValue = "UILabel\nLine\nSpacing"
let attrString = NSMutableAttributedString(string: stringValue)
var style = NSMutableParagraphStyle()
style.lineSpacing = 24 // change line spacing between paragraph like 36 or 48
style.minimumLineHeight = 20 // change line spacing between each line like 30 or 40
attrString.addAttribute(NSParagraphStyleAttributeName, value: style, range: NSRange(location: 0, length: stringValue.characters.count))
label.attributedText = attrString
We are using custom fonts in our project. It works well in Xcode 5. In Xcode 6, it works in plain text, attributed string in code. But those attributed strings set in storyboard all revert to Helvetica when running on simulator or device, although they look all right in storyboard.
I'm not sure if it's a bug of Xcode 6 or iOS 8 SDK, or the way to use custom fonts is changed in Xcode 6 / iOS 8?
The simplest answer that worked for is to drag the fonts into FontBook. If the fonts are in your project but not in your computer's FontBook, IB sometimes has trouble finding it. Weird, but has worked for me on several occasions.
The fix for me was to use an IBDesignable class:
import UIKit
#IBDesignable class TIFAttributedLabel: UILabel {
#IBInspectable var fontSize: CGFloat = 13.0
#IBInspectable var fontFamily: String = "DIN Light"
override func awakeFromNib() {
var attrString = NSMutableAttributedString(attributedString: self.attributedText)
attrString.addAttribute(NSFontAttributeName, value: UIFont(name: self.fontFamily, size: self.fontSize)!, range: NSMakeRange(0, attrString.length))
self.attributedText = attrString
}
}
Giving you this in the Interface Builder:
You can set up your attributedstring just as you normal do, but you'll have to set your fontsize and fontfamily once again in the new available properties.
As the Interface Builder is working with the custom font by default, this results in a what you see is what you get, which I prefer when building apps.
Note
The reason I'm using this instead of just the plain version is that I'm setting properties on the attributed label like the linespacing, which are not available when using the plain style.
You can add custom fonts to font book.
Step1: Click on manage fonts. It opens the font book.
Step2: Click on plus and add your fonts.
Next time when you click on font with attributed text newly added font also will show in the list. But make sure your custom font added in info.plist and bundle resources.
My solution is a bit of a work around. The real solution is for apple to fix Interface Builder.
With it you can mark all the bold and italic text in interface builder using a system font, then at runtime render your custom font. May not be optimal in all cases.
NSMutableAttributedString* ApplyCustomFont(NSAttributedString *attributedText,
UIFont* boldFont,
UIFont* italicFont,
UIFont* boldItalicFont,
UIFont* regularFont)
{
NSMutableAttributedString *attrib = [[NSMutableAttributedString alloc] initWithAttributedString:attributedText];
[attrib beginEditing];
[attrib enumerateAttribute:NSFontAttributeName inRange:NSMakeRange(0, attrib.length) options:0
usingBlock:^(id value, NSRange range, BOOL *stop)
{
if (value)
{
UIFont *oldFont = (UIFont *)value;
NSLog(#"%#",oldFont.fontName);
[attrib removeAttribute:NSFontAttributeName range:range];
if([oldFont.fontName rangeOfString:#"BoldItalic"].location != NSNotFound && boldItalicFont != nil)
[attrib addAttribute:NSFontAttributeName value:boldItalicFont range:range];
else if([oldFont.fontName rangeOfString:#"Italic"].location != NSNotFound && italicFont != nil)
[attrib addAttribute:NSFontAttributeName value:italicFont range:range];
else if([oldFont.fontName rangeOfString:#"Bold"].location != NSNotFound && boldFont != nil)
[attrib addAttribute:NSFontAttributeName value:boldFont range:range];
else if(regularFont != nil)
[attrib addAttribute:NSFontAttributeName value:regularFont range:range];
}
}];
[attrib endEditing];
return attrib;
}
Inspired by this post
Thanks to this thread, I've come to this solution:
private let fontMapping = [
"HelveticaNeue-Medium": "ITCAvantGardePro-Md",
"HelveticaNeue": "ITCAvantGardePro-Bk",
"HelveticaNeue-Bold": "ITCAvantGardePro-Demi",
]
func switchFontFamily(string: NSAttributedString) -> NSAttributedString {
var result = NSMutableAttributedString(attributedString: string)
string.enumerateAttribute(NSFontAttributeName, inRange: NSRange(location: 0, length: string.length), options: nil) { (font, range, _) in
if let font = font as? UIFont {
result.removeAttribute(NSFontAttributeName, range: range)
result.addAttribute(NSFontAttributeName, value: UIFont(name: fontMapping[font.fontName]!, size: font.pointSize)!, range: range)
}
}
return result
}
I have struggled with this bug: UILabel displays correctly in IB with custom font but does not display correctly on device or simulator (font is included in the project and is used in plain UILabels).
Finally found Attributed String Creator on (Mac) App Store. Generates code to be placed in your app in the appropriate place. Fantastic.
I am not the creator, just a happy user.
Met the same problem: the attribute font set for TextView in storyboard didn't work in run time with XCode 6.1 & iOS 8 SDK.
This is how I solved this issue, might be a workaround for you:
open the attribute inspector of your textview, change text to
"Plain"
click on the cross to delete the "wC hR"(red below)
change text to "Attributed", and then you can set the font and size
for your text.
run to check if it works
Try this it will work
In my case when i try to set "Silversky Technology" as Attributed text for label from interface builder its not show when i run in simulator but its show in interface builder. So i used one trick i made Silversky font with 1 pixel bigger then Technology text.
Attribute text have issue with same size of font so change size of 1 word this thing work with me.
May be this is xcode bug but this trick work for me.
Met the same problem: the attribute font for UILabel in storyboard didn't work in run time. Using this UIFont+IBCustomFonts.m works for me
https://github.com/deni2s/IBCustomFonts
The same problem.
Solved: Just check Selectable in TextView. Without this i have standard System font.
Double click and install the font to the system. It will work (Xcode 8.2)
#Hamidptb solution works, make sure to get the correct name of the font (once you've added it to Font Book)
Open the Font Book application, navigate to your font then press Command+I. The PostScript name is the font name you want to use here:
UILabel.appearance().font = UIFont(name: "PostScriptName", size: 17)
I was trying to get tableView cells with text having multiple paragraphs. The attributed strings seemed to be a way to get extra space between the paragraphs (something a bit nicer looking than doing two line-feeds in the string). Came across this and other posts when I discovered that the IB settings didn't apply at run time when you wanted to put different text in the cell.
The main thing I came up with was adding an extension to String (using Swift) to
create an attributed string with certain characteristics. Example here uses the Marker Felt font, as it is easily distinguishable from Helvetica. The example also shows a little extra bit of spacing between paragraphs to make them more distinct from each other.
extension String {
func toMarkerFelt() -> NSAttributedString {
var style = NSMutableParagraphStyle()
style.paragraphSpacing = 5.0
let markerFontAttributes : [NSObject : AnyObject]? = [
NSFontAttributeName : UIFont(name: "Marker Felt", size: 14.0)!,
NSParagraphStyleAttributeName: style,
NSForegroundColorAttributeName : UIColor.blackColor()
]
let s = NSAttributedString(string: self, attributes: markerFontAttributes)
return s
}
}
Then, in my custom tableViewCell, you send it the text you want and it converts it to an attributed string on the UILabel.
// MarkerFeltCell.swift
class MarkerFeltCell: UITableViewCell {
#IBOutlet weak var myLabel: UILabel!
func configureCellWithString(inputString : String) {
myLabel.attributedText = inputString.toMarkerFelt()
}}
In the view controller with the tableView, you should register your cell in viewDidLoad() -- I used a nib, so something like:
let cellName = "MarkerFeltCell"
tableView.registerNib(UINib(nibName: cellName, bundle: nil), forCellReuseIdentifier: cellName)
To get the cell to figure out how tall it should be, make a prototype cell that is used to get size info, and is never added into the tableView. So, in your
view controller's variables:
var prototypeSummaryCell : MarkerFeltCell? = nil
Then in (probably override - depending on your view controller) heightForRowAtIndexPath:
override func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {
// ...
if xib == "MarkerFeltCell" {
if prototypeCell == nil {
prototypeCell = tableView.dequeueReusableCellWithIdentifier(xib) as? MarkerFeltCell
}
let width : CGFloat = tableView.bounds.width
let height : CGFloat = prototypeCell!.bounds.height
prototypeCell?.bounds = CGRect(x: 0, y: 0, width: width, height: height)
configureCell(prototypeCell!, atIndexPath: indexPath)
prototypeSummaryCell?.layoutIfNeeded()
let size = prototypeSummaryCell!.contentView.systemLayoutSizeFittingSize(UILayoutFittingCompressedSize)
let nextHeight : CGFloat = ceil(size.height + 1.0)
return nextHeight
} else { // ...
In the above code, the prototypeCell will be filled in the first time it is needed. The prototypeCell is then used to figure out the height for the cell after going through the autosizing process. You will need to round up the height with the ceil() function. I also added in some extra fudge factor.
The final code bit is how you configure the text for the cell. For this example, simply:
func configureCell(cell :UITableViewCell, atIndexPath indexPath: NSIndexPath) {
if let realCell = cell as? MarkerFeltCell {
realCell.configureCellWithString("Multi-line string.\nLine 2.\nLine 3.") // Use \n to separate lines
}
}
Also, here is a shot of the nib. Pinned the label to the edges of the cell (with margin desired), but used a "Greater Than or Equal" constraint, with a less than "Required" priority for the bottom constraint.
Set the label's font to Attributed. Actual IB font didn't matter.
The result in this case:
In case of attributed string you can add custom font in font list as -
Click on font icon this will display following dialog .In the following dialog you can add your own category or existing one for custom font.attributed font dialog
After it click on Manage Fonts it open the following dialog select category in you created or existing one . Click on + sign to add font in the category.
Manage font dialog
that's have a simple and quick solition and that's work in my case .
that solution is add a code line in didFinishLaunchingWithOptions func in AppDelegate.swift file :
for textViews :
UITextView.appearance().font = UIFont(name: "IranSans", size: 17)
for labels :
UILabel.appearance().font = UIFont(name: "IranSans", size: 17)
and for rest of UiView like this two ☝️
For anyone applying custom fonts to attributed string in code: Try setting it in viewDidLayoutSubviews. My mistake was doing it in viewDidLoad, it won't be applied there.