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

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;
}

其他回答

我只是创建了UILabel的一个子类来专门处理这样的用例。您可以轻松地添加多个链接并为它们定义不同的处理程序。它还支持突出显示按下的链接时,你触摸触摸反馈。请参考https://github.com/null09264/FRHyperLabel。

在你的例子中,代码可能是这样的:

FRHyperLabel *label = [FRHyperLabel new];

NSString *string = @"This morph was generated with Face Dancer, Click to view in the app store.";
NSDictionary *attributes = @{NSFontAttributeName: [UIFont preferredFontForTextStyle:UIFontTextStyleHeadline]};

label.attributedText = [[NSAttributedString alloc]initWithString:string attributes:attributes];

[label setLinkForSubstring:@"Face Dancer" withLinkHandler:^(FRHyperLabel *label, NSString *substring){
    [[UIApplication sharedApplication] openURL:aURL];
}];

示例截图(在这种情况下,处理程序被设置为弹出警报而不是打开url)

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

只需为UITextView找到一个无代码的解决方案:

启用检测->链接选项,URL和电子邮件也将被检测和点击!

我发现这真的很有用,但我需要在相当多的地方这样做,所以我已经包装了我的方法在一个简单的扩展到NSMutableAttributedString:

斯威夫特3

extension NSMutableAttributedString {

    public func setAsLink(textToFind:String, linkURL:String) -> Bool {

        let foundRange = self.mutableString.range(of: textToFind)
        if foundRange.location != NSNotFound {
            self.addAttribute(.link, value: linkURL, range: foundRange)
            return true
        }
        return false
    }
}

斯威夫特2

import Foundation

extension NSMutableAttributedString {

   public func setAsLink(textToFind:String, linkURL:String) -> Bool {

       let foundRange = self.mutableString.rangeOfString(textToFind)
       if foundRange.location != NSNotFound {
           self.addAttribute(NSLinkAttributeName, value: linkURL, range: foundRange)
           return true
       }
       return false
   }
}

使用示例:

let attributedString = NSMutableAttributedString(string:"I love stackoverflow!")
let linkWasSet = attributedString.setAsLink("stackoverflow", linkURL: "http://stackoverflow.com")

if linkWasSet {
    // adjust more attributedString properties
}

objective - c

我只是满足了在纯Objective-C项目中做同样事情的要求,这里是Objective-C类别。

@interface NSMutableAttributedString (SetAsLinkSupport)

- (BOOL)setAsLink:(NSString*)textToFind linkURL:(NSString*)linkURL;

@end


@implementation NSMutableAttributedString (SetAsLinkSupport)

- (BOOL)setAsLink:(NSString*)textToFind linkURL:(NSString*)linkURL {

     NSRange foundRange = [self.mutableString rangeOfString:textToFind];
     if (foundRange.location != NSNotFound) {
         [self addAttribute:NSLinkAttributeName value:linkURL range:foundRange];
         return YES;
     }
     return NO;
}

@end

使用示例:

NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:"I love stackoverflow!"];

BOOL linkWasSet = [attributedString setAsLink:@"stackoverflow" linkURL:@"http://stackoverflow.com"];

if (linkWasSet) {
    // adjust more attributedString properties
}

确保NSTextField的Behavior属性被设置为Selectable。

我写了一个方法,添加一个链接(linkString)到一个字符串(fullString)与特定的url(urlString):

- (NSAttributedString *)linkedStringFromFullString:(NSString *)fullString withLinkString:(NSString *)linkString andUrlString:(NSString *)urlString
{
    NSRange range = [fullString rangeOfString:linkString options:NSLiteralSearch];
    NSMutableAttributedString *str = [[NSMutableAttributedString alloc] initWithString:fullString];

    NSMutableParagraphStyle *paragraphStyle = NSMutableParagraphStyle.new;
    paragraphStyle.alignment = NSTextAlignmentCenter;
    NSDictionary *attributes = @{NSForegroundColorAttributeName:RGB(0x999999),
                                 NSFontAttributeName:[UIFont fontWithName:@"HelveticaNeue-Light" size:10],
                                 NSParagraphStyleAttributeName:paragraphStyle};
    [str addAttributes:attributes range:NSMakeRange(0, [str length])];
    [str addAttribute: NSLinkAttributeName value:urlString range:range];

    return str;
}

你应该这样称呼它:

NSString *fullString = @"A man who bought the Google.com domain name for $12 and owned it for about a minute has been rewarded by Google for uncovering the flaw.";
NSString *linkString = @"Google.com";
NSString *urlString = @"http://www.google.com";

_youTextView.attributedText = [self linkedStringFromFullString:fullString withLinkString:linkString andUrlString:urlString];