在UITextView中使超链接可点击是很简单的。您只需在IB中的视图上设置“检测链接”复选框,它就会检测HTTP链接并将其转换为超链接。

然而,这仍然意味着用户看到的是“原始”链接。RTF文件和HTML都允许你设置一个用户可读的字符串,“后面”有一个链接。

将带属性的文本安装到文本视图(或UILabel或UITextField)是很容易的。但是,当带有属性的文本包含链接时,它是不可点击的。

是否有一种方法使用户可读的文本点击在UITextView, UILabel或UITextField?

在SO上的标记是不同的,但这里是大致的思想。我想要的是这样的文本:

这个变形是由Face Dancer生成的,点击在应用程序商店中查看。

我唯一能得到的是:

这个变形是由Face Dancer生成的,点击http://example.com/facedancer在应用商店中查看。


当前回答

Swift 3的例子,以检测对属性文本点击的动作

https://stackoverflow.com/a/44226491/5516830

let termsAndConditionsURL = TERMS_CONDITIONS_URL;
let privacyURL            = PRIVACY_URL;

override func viewDidLoad() {
    super.viewDidLoad()

    self.txtView.delegate = self
    let str = "By continuing, you accept the Terms of use and Privacy policy"
    let attributedString = NSMutableAttributedString(string: str)
    var foundRange = attributedString.mutableString.range(of: "Terms of use") //mention the parts of the attributed text you want to tap and get an custom action
    attributedString.addAttribute(NSLinkAttributeName, value: termsAndConditionsURL, range: foundRange)
    foundRange = attributedString.mutableString.range(of: "Privacy policy")
    attributedString.addAttribute(NSLinkAttributeName, value: privacyURL, range: foundRange)
    txtView.attributedText = attributedString
}

func textView(_ textView: UITextView, shouldInteractWith URL: URL, in characterRange: NSRange) -> Bool {
    let storyboard = UIStoryboard(name: "Main", bundle: nil)
    let vc = storyboard.instantiateViewController(withIdentifier: "WebView") as! SKWebViewController

    if (URL.absoluteString == termsAndConditionsURL) {
        vc.strWebURL = TERMS_CONDITIONS_URL
        self.navigationController?.pushViewController(vc, animated: true)
    } else if (URL.absoluteString == privacyURL) {
        vc.strWebURL = PRIVACY_URL
        self.navigationController?.pushViewController(vc, animated: true)
    }
    return false
}

同样,你可以用shouldInteractWith URLUITextFieldDelegate方法添加任何你想要的动作。

干杯! !

其他回答

我也有类似的需求,最初我使用UILabel,然后我意识到UITextView更好。我使UITextView行为像UILabel通过禁用交互和滚动,并为NSMutableAttributedString做了一个类别方法来设置链接到文本,就像Karl所做的一样(+1)这是我的obj c版本

-(void)setTextAsLink:(NSString*) textToFind withLinkURL:(NSString*) url
{
    NSRange range = [self.mutableString rangeOfString:textToFind options:NSCaseInsensitiveSearch];

    if (range.location != NSNotFound) {

        [self addAttribute:NSLinkAttributeName value:url range:range];
        [self addAttribute:NSForegroundColorAttributeName value:[UIColor URLColor] range:range];
    }
}

您可以使用下面的委托来处理该操作

- (BOOL)textView:(UITextView *)textView shouldInteractWithURL:(NSURL *)url inRange:(NSRange)characterRange
{
    // do the task
    return YES;
}

使用UITextView并为Link设置dataDetectorTypes。

是这样的:

testTextView.editable = false 
testTextView.dataDetectorTypes = .link

如果你想检测链接,电话号码,地址等

testTextView.dataDetectorTypes = .all

我需要继续使用一个纯的UILabel,所以从我的点击识别器称为这(这是基于malex的响应在这里:字符索引在触摸点UILabel)

UILabel* label = (UILabel*)gesture.view;
CGPoint tapLocation = [gesture locationInView:label];

// create attributed string with paragraph style from label

NSMutableAttributedString* attr = [label.attributedText mutableCopy];
NSMutableParagraphStyle* paragraphStyle = [NSMutableParagraphStyle new];
paragraphStyle.alignment = label.textAlignment;

[attr addAttribute:NSParagraphStyleAttributeName value:paragraphStyle range:NSMakeRange(0, label.attributedText.length)];

// init text storage

NSTextStorage *textStorage = [[NSTextStorage alloc] initWithAttributedString:attr];
NSLayoutManager *layoutManager = [[NSLayoutManager alloc] init];
[textStorage addLayoutManager:layoutManager];

// init text container

NSTextContainer *textContainer = [[NSTextContainer alloc] initWithSize:CGSizeMake(label.frame.size.width, label.frame.size.height+100) ];
textContainer.lineFragmentPadding  = 0;
textContainer.maximumNumberOfLines = label.numberOfLines;
textContainer.lineBreakMode        = label.lineBreakMode;

[layoutManager addTextContainer:textContainer];

// find tapped character

NSUInteger characterIndex = [layoutManager characterIndexForPoint:tapLocation
                                                  inTextContainer:textContainer
                         fractionOfDistanceBetweenInsertionPoints:NULL];

// process link at tapped character

[attr enumerateAttributesInRange:NSMakeRange(characterIndex, 1)
                                         options:0
                                      usingBlock:^(NSDictionary<NSString *,id> * _Nonnull attrs, NSRange range, BOOL * _Nonnull stop) {
                                          if (attrs[NSLinkAttributeName]) {
                                              NSString* urlString = attrs[NSLinkAttributeName];
                                              NSURL* url = [NSURL URLWithString:urlString];
                                              [[UIApplication sharedApplication] openURL:url];
                                          }
                                      }];

如果你想在UITextView中使用NSLinkAttributeName,那么你可以考虑使用AttributedTextView库。它是一个UITextView子类,它让处理这些变得很容易。更多信息请参见:https://github.com/evermeer/AttributedTextView

你可以让文本的任何部分像这样交互(其中textView1是一个UITextView IBoutlet):

textView1.attributer =
    "1. ".red
    .append("This is the first test. ").green
    .append("Click on ").black
    .append("evict.nl").makeInteract { _ in
        UIApplication.shared.open(URL(string: "http://evict.nl")!, options: [:], completionHandler: { completed in })
    }.underline
    .append(" for testing links. ").black
    .append("Next test").underline.makeInteract { _ in
        print("NEXT")
    }
    .all.font(UIFont(name: "SourceSansPro-Regular", size: 16))
    .setLinkColor(UIColor.purple) 

为了处理标签和提及,你可以使用这样的代码:

textView1.attributer = "@test: What #hashtags do we have in @evermeer #AtributedTextView library"
    .matchHashtags.underline
    .matchMentions
    .makeInteract { link in
        UIApplication.shared.open(URL(string: "https://twitter.com\(link.replacingOccurrences(of: "@", with: ""))")!, options: [:], completionHandler: { completed in })
    }

使用UITextView它支持可点击链接。 使用以下代码创建带属性的字符串

NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:strSomeTextWithLinks];

然后设置UITextView text,如下所示

NSDictionary *linkAttributes = @{NSForegroundColorAttributeName: [UIColor redColor],

                                 NSUnderlineColorAttributeName: [UIColor blueColor],

                                 NSUnderlineStyleAttributeName: @(NSUnderlinePatternSolid)};

customTextView.linkTextAttributes = linkAttributes; // customizes the appearance of links
textView.attributedText = attributedString;

确保你在XIB中启用了UITextView的“可选”行为。