[英]Label NSMutableAttributedString programmatically swift 4
我必须确保可以单击单词“ Privacy”(隐私)以打开Web链接。 我尝试了一些发现的建议,但这些建议已经过时了,它们似乎不再起作用了..我不知道如何解决该问题
private lazy var firstTermDescriptionLabel: UILabel = {
let label = UILabel(frame: .zero)
let firstTermsMessage = "I Agree to the License Terms and Privacy Policy"
var attributedString = NSMutableAttributedString.init(string: "Privacy")
attributedString.addAttribute(.link, value: "https://www.google.com/url?q=https://www.iubenda.com/privacy-policy/58446596&sa=D&source=hangouts&ust=1528787597335000&usg=AFQjCNEPkofPxSm7TDRMvxjOjCz5cio27w", range: NSRange(location: 0, length: 7))
label.isUserInteractionEnabled = true
label.text = firstTermsMessage
label.font = UIFont.systemFont(ofSize: 13, weight: .regular)
label.textAlignment = .left
label.numberOfLines = 0
label.translatesAutoresizingMaskIntoConstraints = false
label.heightAnchor.constraint(equalToConstant: 36).isActive = true
return label
}()
更新至Swift 4
将此扩展添加到您的项目中
extension NSMutableAttributedString {
public func setAsLink(textToFind:String, linkURL:String) -> Bool {
let foundRange = self.mutableString.range(of: textToFind)
if foundRange.location != NSNotFound {
// self.addAttribute(NSLinkAttributeName, value: linkURL, range: foundRange)
self.addAttributes([NSAttributedStringKey.link: URL(string: linkURL)!], range: foundRange)
return true
}
return false
}
}
在下面更改您的样式:
let firstTermsMessage = "I Agree to the License Terms and Privacy Policy"
let attributedString = NSMutableAttributedString(string:firstTermsMessage)
let linkWasSet = attributedString.setAsLink(textToFind: "Privacy", linkURL: "https://www.google.com/url?q=https://www.iubenda.com/privacy-policy/58446596&sa=D&source=hangouts&ust=1528787597335000&usg=AFQjCNEPkofPxSm7TDRMvxjOjCz5cio27w")
if linkWasSet {
// adjust more attributedString properties
}
lableAtt.attributedText = attributedString
lableAtt.isUserInteractionEnabled = true
lableAtt.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(handleTapOnLabel(_:))))
@objc func handleTapOnLabel(_ recognizer: UITapGestureRecognizer) {
guard let text = lableAtt.attributedText?.string else {
return
}
if let range = text.range(of:"terms") {
// goToTermsAndConditions()
} else if let range = text.range(of: "Privacy"){
print(range)
UIApplication.shared.open(URL(string: "https://www.google.com/url?q=https://www.iubenda.com/privacy-policy/58446596&sa=D&source=hangouts&ust=1528787597335000&usg=AFQjCNEPkofPxSm7TDRMvxjOjCz5cio27w")!, options: [:])
}
}
如果您打算使用一些第三方代码,则TTTAttributedLabel
是一种广泛使用的“ UILabel的直接替代品”,可让您轻松嵌入链接!
您可以在这里找到它: https : //github.com/TTTAttributedLabel/TTTAttributedLabel/
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