如何制作URL /电话可点击的UILabel？

Answers:

134

您可以使用UITextView，然后在检查器中选择“检测链接，电话号码和其他内容”。

— 巴塞尔
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2
我有一个可自动调整大小的标签，可以容纳N行文本。如何在不实现UITextView的情况下使此标签中的链接可单击。
— bibscy
@bibscy，则可以使用NSAttributedText。看看stackoverflow.com/questions/1256887/…–
— 巴塞尔
95

使用UITextView代替，UILabel它具有将文本转换为超链接的属性。

目标C：

yourTextView.editable = NO;
yourTextView.dataDetectorTypes = UIDataDetectorTypeAll;

迅速：

yourTextView.editable = false; 
yourTextView.dataDetectorTypes = UIDataDetectorTypes.All;

这将自动检测链接。

有关详细信息，请参见文档。

— Sameera Chathuranga
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5
这种颜色的链接蓝色，并强调它，但似乎并使其可点击的，至少在iOS 7
— 奔^ h
1
迅捷代码：yourTextView.editable = false; yourTextView.dataDetectorTypes = UIDataDetectorTypes.All;
— Thiago Arreguy '16
5
问题是关于UILabel，而不是UITextView。
— swift2geek
28

https://github.com/mattt/TTTAttributedLabel

绝对是您所需要的。您还可以为标签应用属性，例如下划线，并为其应用不同的颜色。只需查看有关可点击网址的说明即可。

主要，您执行以下操作：

NSRange range = [label.text rangeOfString:@"me"];
[label addLinkToURL:[NSURL URLWithString:@"http://github.com/mattt/"] withRange:range]; // Embedding a custom link in a substring
— 拉米·科弗里（Ramy Kfoury）
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12

您可以根据需要创建自定义UIButton和setText并添加一个方法。

UIButton *sampleButton = [UIButton buttonWithType:UIButtonTypeCustom];
[sampleButton setFrame:CGRectMake(kLeftMargin, 10, self.view.bounds.size.width - kLeftMargin - kRightMargin, 52)];
[sampleButton setTitle:@"URL Text" forState:UIControlStateNormal];
[sampleButton setFont:[UIFont boldSystemFontOfSize:20]];


[sampleButton addTarget:self action:@selector(buttonPressed) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:sampleButton];


-(void)buttonPressed:(id)sender{
  // open url
}
— 罗希特·达万（Rohit Dhawan）
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现在可以通过以下方式设置字体：button.titleLabel.font = [UIFont systemFontOfSize：size];
— 莱昂，
10

如果希望由UILabel处理而不是由UITextView处理，则可以使UILabel子类如下：

class LinkedLabel: UILabel {

fileprivate let layoutManager = NSLayoutManager()
fileprivate let textContainer = NSTextContainer(size: CGSize.zero)
fileprivate var textStorage: NSTextStorage?


override init(frame aRect:CGRect){
    super.init(frame: aRect)
    self.initialize()
}

required init?(coder aDecoder: NSCoder) {
    super.init(coder: aDecoder)
    self.initialize()
}

func initialize(){

    let tap = UITapGestureRecognizer(target: self, action: #selector(LinkedLabel.handleTapOnLabel))
    self.isUserInteractionEnabled = true
    self.addGestureRecognizer(tap)
}

override var attributedText: NSAttributedString?{
    didSet{
        if let _attributedText = attributedText{
            self.textStorage = NSTextStorage(attributedString: _attributedText)

            self.layoutManager.addTextContainer(self.textContainer)
            self.textStorage?.addLayoutManager(self.layoutManager)

            self.textContainer.lineFragmentPadding = 0.0;
            self.textContainer.lineBreakMode = self.lineBreakMode;
            self.textContainer.maximumNumberOfLines = self.numberOfLines;
        }

    }
}

func handleTapOnLabel(tapGesture:UITapGestureRecognizer){

    let locationOfTouchInLabel = tapGesture.location(in: tapGesture.view)
    let labelSize = tapGesture.view?.bounds.size
    let textBoundingBox = self.layoutManager.usedRect(for: self.textContainer)
    let textContainerOffset = CGPoint(x: ((labelSize?.width)! - textBoundingBox.size.width) * 0.5 - textBoundingBox.origin.x, y: ((labelSize?.height)! - textBoundingBox.size.height) * 0.5 - textBoundingBox.origin.y)

    let locationOfTouchInTextContainer = CGPoint(x: locationOfTouchInLabel.x - textContainerOffset.x, y: locationOfTouchInLabel.y - textContainerOffset.y)
    let indexOfCharacter = self.layoutManager.characterIndex(for: locationOfTouchInTextContainer, in: self.textContainer, fractionOfDistanceBetweenInsertionPoints: nil)


    self.attributedText?.enumerateAttribute(NSLinkAttributeName, in: NSMakeRange(0, (self.attributedText?.length)!), options: NSAttributedString.EnumerationOptions(rawValue: UInt(0)), using:{
        (attrs: Any?, range: NSRange, stop: UnsafeMutablePointer<ObjCBool>) in

        if NSLocationInRange(indexOfCharacter, range){
            if let _attrs = attrs{

                UIApplication.shared.openURL(URL(string: _attrs as! String)!)
            }
        }
    })

}}

通过重用此答案中的代码来制作此类。为了使属性字符串检查出此答案。而在这里，你可以找到如何让手机网址。

— 博扬·博佐维奇（Bojan Bozovic）
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6

使用它，我非常喜欢它，因为仅在整个标签文本上创建了蓝色到特定文本的链接：FRHyperLabel

在使用条款上巧妙地应用超链接

去做：

  1. 从上面的链接和复制下载FRHyperLabel.h，FRHyperLabel.m到项目中。

  2. 如图所示，UILabel在您的下拉菜单中Storyboard定义自定义类名以FRHyperLabel标识检查器。

在此处输入图片说明

  1. 将UILabel从情节提要板连接到viewController.h文件

@property (weak, nonatomic) IBOutlet FRHyperLabel *label;

  1. 现在，在您的viewController.m文件中添加以下代码。

`NSString * string = @“上传后，我同意使用条款”; NSDictionary *属性= @ {NSFontAttributeName：[UIFont preferredFontForTextStyle：UIFontTextStyleHeadline]} ;;

_label.attributedText = [[NSAttributedString alloc]initWithString:string attributes:attributes];
[_label setFont:[_label.font fontWithSize:13.0]];

[_label setLinkForSubstring:@"Terms of Use" withLinkHandler:^(FRHyperLabel *label, NSString *substring){
    [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"http://www.google.com"]];
}];`
  1. 并运行它。
— 卡兰
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6

使用UITextView代替UILabel，它具有将文本转换为超链接的属性

SWIFT代码：

yourTextView.editable = false
yourTextView.dataDetectorTypes = UIDataDetectorTypes.All
//or
yourTextView.dataDetectorTypes = UIDataDetectorTypes.PhoneNumber
//or
yourTextView.dataDetectorTypes = UIDataDetectorTypes.Link
— 蒂亚戈·阿雷吉（Thiago Arreguy）
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4
问题是如何在UILabel中而不是TextViews中使用。谢谢。
— swift2geek
0 
extension UITapGestureRecognizer {

    func didTapAttributedTextInLabel(label: UILabel, inRange targetRange: NSRange) -> Bool {

        let layoutManager = NSLayoutManager()
        let textContainer = NSTextContainer(size: CGSize.zero)
        let textStorage = NSTextStorage(attributedString: label.attributedText!)

        // Configure layoutManager and textStorage
        layoutManager.addTextContainer(textContainer)
        textStorage.addLayoutManager(layoutManager)

        // Configure textContainer
        textContainer.lineFragmentPadding = 0.0
        textContainer.lineBreakMode = label.lineBreakMode
        textContainer.maximumNumberOfLines = label.numberOfLines
        textContainer.size = label.bounds.size

        // main code
        let locationOfTouchInLabel = self.location(in: label)

        let indexOfCharacter = layoutManager.characterIndex(for: locationOfTouchInLabel, in: textContainer, fractionOfDistanceBetweenInsertionPoints: nil)
        let indexOfCharacterRange = NSRange(location: indexOfCharacter, length: 1)
        let indexOfCharacterRect = layoutManager.boundingRect(forGlyphRange: indexOfCharacterRange, in: textContainer)
        let deltaOffsetCharacter = indexOfCharacterRect.origin.x + indexOfCharacterRect.size.width

        if locationOfTouchInLabel.x > deltaOffsetCharacter {
            return false
        } else {
            return NSLocationInRange(indexOfCharacter, targetRange)
        }
    }
}
— 哈曼
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0

为什么不只使用NSMutableAttributedString？

let attributedString = NSMutableAttributedString(string: "Want to learn iOS? Just visit developer.apple.com!")
        attributedString.addAttribute(.link, value: "https://developer.apple.com", range: NSRange(location: 30, length: 50))

        myView.attributedText = attributedString

您可以在这里找到更多详细信息

— 曼
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我今天刚刚尝试从UILabel拨打电话，但以上代码无效。我已经用tel：// 1234567 替换了dev.appl.com。可能此答案需要更新。
— Pratik Somaiya
-1

Swift 4.2，Xcode 9.3版本

class LinkedLabel: UILabel {

    fileprivate let layoutManager = NSLayoutManager()
    fileprivate let textContainer = NSTextContainer(size: CGSize.zero)
    fileprivate var textStorage: NSTextStorage?


    override init(frame aRect:CGRect){
        super.init(frame: aRect)
        self.initialize()
    }

    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
        self.initialize()
    }

    func initialize(){

        let tap = UITapGestureRecognizer(target: self, action: #selector(self.handleTapOnLabel))
        self.isUserInteractionEnabled = true
        self.addGestureRecognizer(tap)
    }

    override var attributedText: NSAttributedString?{
        didSet{
            if let _attributedText = attributedText{
                self.textStorage = NSTextStorage(attributedString: _attributedText)

                self.layoutManager.addTextContainer(self.textContainer)
                self.textStorage?.addLayoutManager(self.layoutManager)

                self.textContainer.lineFragmentPadding = 0.0;
                self.textContainer.lineBreakMode = self.lineBreakMode;
                self.textContainer.maximumNumberOfLines = self.numberOfLines;
            }

        }
    }

    @objc func handleTapOnLabel(tapGesture:UITapGestureRecognizer){

        let locationOfTouchInLabel = tapGesture.location(in: tapGesture.view)
        let labelSize = tapGesture.view?.bounds.size
        let textBoundingBox = self.layoutManager.usedRect(for: self.textContainer)
        let textContainerOffset = CGPoint(x: ((labelSize?.width)! - textBoundingBox.size.width) * 0.5 - textBoundingBox.origin.x, y: ((labelSize?.height)! - textBoundingBox.size.height) * 0.5 - textBoundingBox.origin.y)

        let locationOfTouchInTextContainer = CGPoint(x: locationOfTouchInLabel.x - textContainerOffset.x, y: locationOfTouchInLabel.y - textContainerOffset.y)
        let indexOfCharacter = self.layoutManager.characterIndex(for: locationOfTouchInTextContainer, in: self.textContainer, fractionOfDistanceBetweenInsertionPoints: nil)


        self.attributedText?.enumerateAttribute(NSAttributedStringKey.link, in: NSMakeRange(0, (self.attributedText?.length)!), options: NSAttributedString.EnumerationOptions(rawValue: UInt(0)), using:{
            (attrs: Any?, range: NSRange, stop: UnsafeMutablePointer<ObjCBool>) in

            if NSLocationInRange(indexOfCharacter, range){
                if let _attrs = attrs{

                    UIApplication.shared.openURL(URL(string: _attrs as! String)!)
                }
            }
        })

    }}
— swift2geek
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-3

使用UIButton的Swift 4.0可能的解决方案

     phoneButton = UIButton(frame: CGRect(x: view.frame.width * 0, y: view.frame.height * 0.1, width: view.frame.width * 1, height: view.frame.height * 0.05))
     phoneButton.setTitle("333-333-3333", for: .normal )
     phoneButton.setTitleColor(UIColor(red: 0 / 255, green: 0 / 255, blue: 238 / 255, alpha: 1.0), for: .normal)
     phoneButton.addTarget(self, action: #selector(self.callPhone), for: .touchUpInside )

     @objc func callPhone(){

         UIApplication.shared.open(URL(string:"tel://3333333333")!, options: [:] , completionHandler: nil)


    }
— 菲德尔
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