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];
其他回答
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];
在Swift 5.5中
自从Swift 5.5以来，NSAttributedString是完全可本地化的，甚至不需要定义字符的数量就很容易使用。
func attributedStringBasics(important: Bool) {
var buy = AttributedString("Buy a new iPhone!")
buy.font = .body.bold()
var website = AttributedString("Visit Apple")
website.font = .body.italic()
website.link = URL(string: "http://www.apple.com")
var container = AttributeContainer()
if important {
container.foregroundColor = .red
container.underlineColor = .primary
} else {
container.foregroundColor = .primary
}
buy.mergeAttributes(container)
website.mergeAttributes(container)
print(buy)
print(website)
}
Swift版本:
// Attributed String for Label
let plainText = "Apkia"
let styledText = NSMutableAttributedString(string: plainText)
// Set Attribuets for Color, HyperLink and Font Size
let attributes = [NSFontAttributeName: UIFont.systemFontOfSize(14.0), NSLinkAttributeName:NSURL(string: "http://apkia.com/")!, NSForegroundColorAttributeName: UIColor.blueColor()]
styledText.setAttributes(attributes, range: NSMakeRange(0, plainText.characters.count))
registerLabel.attributedText = styledText
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)
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! !
