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。
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 })
}
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。
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! !