The label is not tappable as a hyperlink. I am creating the label inside a custom UITableViewCell using the following piece of code.

messageLabel = [[TTTAttributedLabel alloc] initWithFrame:CGRectZero];

messageLabel.linkAttributes = [NSDictionary dictionaryWithObject:[NSNumber numberWithBool:YES] forKey:(NSString *)kCTUnderlineStyleAttributeName];

messageLabel.dataDetectorTypes = UIDataDetectorTypeLink;

messageLabel.userInteractionEnabled = YES;

I have implemented the delegate method like this:

• (void)attributedLabel:(TTTAttributedLabel *)label didSelectLinkWithURL:(NSURL *)url { NSLog(@"links on uilabel work"); }

Also there are no gesture recognizers on the view.

Hi, I tried to use this library/component for its link-ability. I added it as a Pod. This works without problems.

One of my projects needs to have touchable words in a UILabel. The view hosting this UILabel is designed in a xib.

I tried to set the Class of the UILabel to TTTAttributedLabel, because it seems to support IB_DESIGNABLE and the respective Inspectables.

The Inspectable attributes appear in the attributes inspector and the app compiles and runs fine.

I just have nasty error message which I dont quiet get:

They seem just to be about the component to fail being renderable inside Interface Builder. If thats the case, how to disable these errors? If its more than that I would appreciate help to get rid of them.

Thanks in advance.

I'm considering dropping support for iOS 4, 5, and 6.

This would allow:

• a shorter, more readable, more maintainable code base, bereft of compile and runtime checks for old symbol names and features
• modern Objective-C syntax

The current version would still exist on a separate branch.

While long-running backwards compatibility has been a hallmark of TTTAttributedLabel for some time, as @galambalazs points out, it may be mostly an academic exercise.

• Does anyone use TTTAttributedLabel in apps which support large numbers of iOS 4, 5, and 6 users? If so, can you share your data?
• One possible improvement with this change would be to delegate all drawing to UILabel, which would mostly end discrepancies between its appearance and this library's. This would remove some of the custom drawing features too. How would people feel about that?

I'll let this issue sit here for 4-6 weeks before moving forward.

Fixes sizeThatFits issue where the size returned was (0, 0) when using an attributedTruncationToken.

Addresses: #621 and #678.

I added a unit test to demonstrate the issue and its resolution. You can run the test from commit [2be9753] to see the size being returned as (0, 0). Re-run the test with commit [b82d006] to see the test pass.

As mentioned in #447, TTTAttributedLabel does not support NSTextAttachment. This was surprising, and undesirable.

This is a feature request for NSTextAttachment support.

The link attributed isn't added to the attributed truncation token correctly.

- (void)viewDidLoad {
    [super viewDidLoad];

    NSString *text = @"The NSString class declares the programmatic interface for an object that manages immutable strings. An immutable string is a text string that is defined when it is created and subsequently cannot be changed. NSString is implemented to represent an array of Unicode characters, in other words, a text string.";
    for (int i = 0; i < 10; i++) {
        TTTAttributedLabel *l1 = [[TTTAttributedLabel alloc] initWithFrame:CGRectMake(10, 10*(i+1) + (i * 50) + 10, self.view.bounds.size.width - (i +1)*20, 50)];
        l1.delegate = self;
        l1.userInteractionEnabled = YES;
        l1.numberOfLines = 2;
        l1.attributedTruncationToken = [[NSAttributedString alloc] initWithString:@"...more" attributes:@{NSForegroundColorAttributeName : [UIColor blueColor],
                                                                                                          NSLinkAttributeName : [NSURL URLWithString:@"http://more.com"]}];
//        l1.backgroundColor = [UIColor redColor];
        l1.text = text;
        [self.view addSubview:l1];
        l1.layer.borderColor = [UIColor redColor].CGColor;
        l1.layer.borderWidth = 2;
    }

}
- (void)attributedLabel:(TTTAttributedLabel *)label
   didSelectLinkWithURL:(NSURL *)url {
    NSLog(@"Here");
}

Notice that the link underlines are also not placed in the correct locations

Hi, I've been trying to replace UILabel with TTTAttributedLabel so I can lankily URLS, I came across a weird edge-case involving emoji, I don't know if its indicative of a "larger problem", but might be worth looking at.

background: This is a tableview in which the cells contains a UILabel, in

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath

I calculate the height of the cell using the following:

                CGSize requiredSize = [text sizeWithFont:[UIFont fontWithName:@"American Typewriter" size:17]
                                       constrainedToSize:CGSizeMake(POST_WIDTH, CGFLOAT_MAX)
                                           lineBreakMode:UILineBreakModeWordWrap];

                return 30 + requiredSize.height + 10;

(30 for the header + the required label height + 10 for the footer).

This works fine for UILabel and TTTAttributedLabel as long as they're displaying "plain text". As soon as the text contains an emoji the UILabel continues to render correctly, however the TTAttributedLabel no longer renders anything! (i.e. the TTTAttributedLabel view is completely "empty" as if nothing was rendered into it).

If I change the +10 to +16 (i.e to add an extra 6 pixels to the label) the text then renders properly, except with extra whitespace.

Initial investigation shows that the text is being rendered differently (some screenshots):

UILabel:

TTTAttributedLabel

Notice how the Emoji is rendered vertically centred on the UILabel, but baseline on the TTTAttributedLabel?

I don't have a solution just yet - I'll report back any findings but I wanted to log the issue incase you already know how to fix it!

NSDataDetector is very heavyweight and it’s unnecessary to create a separate instance for every single Label. One detector can deal with a specific type (combination) and so we can just store them in a dictionary.

This way all Labels using the same data detection type share the same detector instance.

• Create TTTAttributedLabelLink class, and use it to manage default/active/inactive link state and accessibility values for non-default link types
• Updates example project to compile properly with this new class
• Update documentation

Last version update was June 15, 2015. Looks like there's been quite a bit of work since then, including bug fixes, could a new version be added please?

I'm trying to set links on a string with specific range.

Here's the example: My string looks like this:

H started tic tac toe event

(which is joining of these three strings, H + started + tic tac toe event)

I'm setting links on H and tic tac toe event. With following range.

2015-02-06 11:40:34.210 Event[5968:38268] {0, 2} --> This is for first string i.e. H 2015-02-06 11:40:35.305 Event[5968:38268] {11, 17} --> This is for last string i.e.tic tac toe event

However when I touch on it, - (void)attributedLabel:(TTTAttributedLabel *)label didSelectLinkWithURL:(NSURL *)url would call even if I touched on started word on the label. It should only call if I'll tap on H or tic tac toe event.

What's wrong? Please help.

iPhone 12 mini iOS 15.2.1

Steps to repro:

1. Configure a TTTAttributedLabel with an NSAttributedString.
2. Add 2 links to the text.
3. Make sure the font of the attributed string wraps the text onto a second line.
4. Enable VoiceOver.

Expected: Both links are accessible via VoiceOver. Actual: Only the first link is accessible via VoiceOver.

To test you can create a single view app with a Storyboard and replace the ViewController code with the following:

import UIKit
import TTTAttributedLabel
import PureLayout

class ViewController: UIViewController, TTTAttributedLabelDelegate {

    let labelText = "I have read and understand Foo's Privacy Policy. I accept the Foo Terms of Use."
    let privacyPolicyLinkText = "Privacy Policy"
    let privacyPolicyLinkURL = URL(string: "https://www.privacy.com")!
    let termsLinkText = "Terms of Use"
    let termsLinkURL = URL(string: "https://www.terms.com")!

    override func viewDidLoad() {
        super.viewDidLoad()
        view.backgroundColor = .white

        let label = TTTAttributedLabel(forAutoLayout: ())
        label.numberOfLines = 0
        label.delegate = self

        view.addSubview(label)
        label.autoAlignAxis(toSuperviewAxis: .horizontal)
        label.autoPinEdge(toSuperviewEdge: .leading, withInset: 20)
        label.autoPinEdge(toSuperviewEdge: .trailing, withInset: 20)

        let attributedString = NSAttributedString(string: labelText,
                                                  attributes: [
                                                    NSAttributedString.Key.font: UIFont.systemFont(ofSize: 16)])

        label.setText(attributedString)
        label.addLink(to: privacyPolicyLinkURL, with: (labelText as NSString).range(of: privacyPolicyLinkText))
        label.addLink(to: termsLinkURL, with: (labelText as NSString).range(of: termsLinkText))
    }

    func attributedLabel(_ label: TTTAttributedLabel!, didSelectLinkWith url: URL!) {
        let alert = UIAlertController(title: "Alert",
                                      message: "Tapped link: \(url.absoluteString)",
                                      preferredStyle: .alert)
        let action = UIAlertAction(title: "Ok", style: .default, handler: nil)
        alert.addAction(action)
        present(alert, animated: true, completion: nil)
    }
}

Here is the Podfile being used. I used PureLayout in addition to TTTAttributedLabel.

# Uncomment the next line to define a global platform for your project
# platform :ios, '9.0'

target 'AttributedLabelLinkBug' do
  # Comment the next line if you don't want to use dynamic frameworks
  use_frameworks!

  pod 'TTTAttributedLabel'
  pod 'PureLayout'

  target 'AttributedLabelLinkBugTests' do
    inherit! :search_paths
    # Pods for testing
  end

  target 'AttributedLabelLinkBugUITests' do
    # Pods for testing
  end

end

Here is a video of the issue: https://user-images.githubusercontent.com/7491869/151636127-948eec72-c3a4-4452-b698-c1815e6c6bec.mp4

Notice how the links are clickable when VO is not enabled.

The technical issue seems to be in the boundingRectForCharacterRange method. boundingRectForGlyphRange does not return the correct CGRect for the second link.

Maybe you can add this feature.. Or anybody needs this, can use this..

First setup your attributed text. Then find the links for each character. Then setup them with addLinkToUrl method.

NSAttributedString *attrString = [[NSAttributedString alloc] initWithData: 
                                   [text dataUsingEncoding:NSUTF8StringEncoding]   
                                   options:@{NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType, NSCharacterEncodingDocumentAttribute: @(NSUTF8StringEncoding)}
                                    documentAttributes:nil error:nil];
[label setAttributedText: attrString];
    
if (label.attributedText != nil && label.attributedText.length > 0) {
    for (int i= 0; i < label.attributedText.length; i++) {
        NSRange range = NSMakeRange(0,1);
        NSDictionary<NSAttributedStringKey,id> *dict = [label.attributedText attributesAtIndex:i effectiveRange:&range];
        if (dict[NSLinkAttributeName] != nil) {
            NSURL *url = dict[NSLinkAttributeName];
            [label addLinkToURL:url withRange:range];
        }
    }
}

After you do this you will be able to detect link taps with TTTAttributedLabelDelegate

- (void)attributedLabel:(TTTAttributedLabel *)label didSelectLinkWithURL:(NSURL *)url {
    if([[UIApplication sharedApplication] canOpenURL:url]) {
        [[UIApplication sharedApplication] openURL:url];
    } 
}

I also shared this solution in one of the stackoverflow question: https://stackoverflow.com/questions/30872730/detecting-links-in-html-with-changing-positions-in-uilabel-tttattributedlabel/66747280#66747280

Apparently Apple is cracking down!

2020-04-07 16:32:51.136814-0400 MyApp[94123:1058712] CoreText note: Client requested name ".SFUI-Regular", it will get TimesNewRomanPSMT rather than the intended font. All system UI font access should be through proper APIs such as CTFontCreateUIFontForLanguage() or +[UIFont systemFontOfSize:].
2020-04-07 16:32:51.136994-0400 MyApp[94123:1058712] CoreText note: Set a breakpoint on CTFontLogSystemFontNameRequest to debug.

The result is that the text does indeed show as Times Roman.

The offending code is in static inline NSAttributedString * NSAttributedStringByScalingFontSize(NSAttributedString *attributedString, CGFloat scale) . There may be other places.