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
斯威夫特4:
var string = "Google"
var attributedString = NSMutableAttributedString(string: string, attributes:[NSAttributedStringKey.link: URL(string: "http://www.google.com")!])
yourTextView.attributedText = attributedString
斯威夫特3.1:
var string = "Google"
var attributedString = NSMutableAttributedString(string: string, attributes:[NSLinkAttributeName: URL(string: "http://www.google.com")!])
yourTextView.attributedText = attributedString
其他回答
使用NSMutableAttributedString。
NSMutableAttributedString * str = [[NSMutableAttributedString alloc] initWithString:@"Google"];
[str addAttribute: NSLinkAttributeName value: @"http://www.google.com" range: NSMakeRange(0, str.length)];
yourTextView.attributedText = str;
编辑:
这不是直接关于这个问题，只是澄清一下，UITextField和UILabel不支持打开url。如果你想使用UILabel链接，你可以检查TTTAttributedLabel。
此外，你应该设置你的UITextView的dataDetectorTypes值为UIDataDetectorTypeLink或UIDataDetectorTypeAll以在单击时打开url。或者你也可以按照评论中的建议使用委托方法。
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];
}
}];
如果你有@Karl Nosworthy和@esilver上面提供的问题，我已经更新了NSMutableAttributedString扩展到它的Swift 4版本。
extension NSMutableAttributedString {
public func setAsLink(textToFind:String, linkURL:String) -> Bool {
let foundRange = self.mutableString.range(of: textToFind)
if foundRange.location != NSNotFound {
_ = NSMutableAttributedString(string: textToFind)
// Set Attribuets for Color, HyperLink and Font Size
let attributes = [NSFontAttributeName: UIFont.bodyFont(.regular, shouldResize: true), NSLinkAttributeName:NSURL(string: linkURL)!, NSForegroundColorAttributeName: UIColor.blue]
self.setAttributes(attributes, range: foundRange)
return true
}
return false
}
}
对ujell的解决方案的微小改进:如果你使用NSURL而不是NSString，你可以使用任何URL(例如自定义URL)
NSURL *URL = [NSURL URLWithString: @"whatsapp://app"];
NSMutableAttributedString * str = [[NSMutableAttributedString alloc] initWithString:@"start Whatsapp"];
[str addAttribute: NSLinkAttributeName value:URL range: NSMakeRange(0, str.length)];
yourTextField.attributedText = str;
玩得开心!
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];
