我有一个Label
,其中有两个应为words
的特定clickable
。它是这样的:
Nutungsbedigungen
和Datenschutzrichtlinien
都应为clickable
。我要做的就是:
setUpLabel:
func setUpDocumentsLabel(){
var textArray = [String]()
var fontArray = [UIFont]()
var colorArray = [UIColor]()
textArray.append("Mit 'fortfahren' akzeptierst du die")
textArray.append("Nutzungsbedingungen")
textArray.append("und")
textArray.append("Datenschutzrichtlinien.")
fontArray.append(Fonts.regularFontWithSize(size: 13.0))
fontArray.append(Fonts.boldFontWithSize(size: 13.0))
fontArray.append(Fonts.regularFontWithSize(size: 13.0))
fontArray.append(Fonts.boldFontWithSize(size: 13.0))
colorArray.append(Colors.white)
colorArray.append(Colors.white)
colorArray.append(Colors.white)
colorArray.append(Colors.white)
self.documentsLabel.attributedText = getAttributedString(arrayText: textArray, arrayColors: colorArray, arrayFonts: fontArray)
self.documentsLabel.isUserInteractionEnabled = true
let tapgesture = UITapGestureRecognizer(target: self, action: #selector(tappedOnLabel(_ :)))
tapgesture.numberOfTapsRequired = 1
self.documentsLabel.addGestureRecognizer(tapgesture)
}
tappedAction:
@objc func tappedOnLabel(_ gesture: UITapGestureRecognizer) {
guard let text = self.documentsLabel.text else { return }
let nutzen = (text as NSString).range(of: "Nutzungsbedingungen")
let daten = (text as NSString).range(of: "Datenschutzrichtlinien")
if gesture.didTapAttributedTextInLabel(label: self.documentsLabel, inRange: nutzen) {
let alertcontroller = UIAlertController(title: "Tapped on", message: "user tapped on Nutzungsbedingungen", preferredStyle: .alert)
let alertAction = UIAlertAction(title: "OK", style: .default) { (alert) in
}
alertcontroller.addAction(alertAction)
self.present(alertcontroller, animated: true)
} else if gesture.didTapAttributedTextInLabel(label: self.documentsLabel, inRange: daten){
let alertcontroller = UIAlertController(title: "Tapped on", message: "user tapped on Datenschutzrichtlinien", preferredStyle: .alert)
let alertAction = UIAlertAction(title: "OK", style: .default) { (alert) in
}
alertcontroller.addAction(alertAction)
self.present(alertcontroller, animated: true)
}
}
getAttributedString:
func getAttributedString(arrayText:[String]?, arrayColors:[UIColor]?, arrayFonts:[UIFont]?) -> NSMutableAttributedString {
let finalAttributedString = NSMutableAttributedString()
for i in 0 ..< (arrayText?.count)! {
let attributes = [NSAttributedString.Key.foregroundColor: arrayColors?[i], NSAttributedString.Key.font: arrayFonts?[i]]
let attributedStr = (NSAttributedString.init(string: arrayText?[i] ?? "", attributes: attributes as [NSAttributedString.Key : Any]))
if i != 0 {
finalAttributedString.append(NSAttributedString.init(string: " "))
}
finalAttributedString.append(attributedStr)
}
return finalAttributedString
}
问题:
strings
不是每个字符上的clickable
! length
区域的clickable
因设备而异:
对于Datenschutzrichtlinien
:
iPhone 11:来自[[D-t的clickable
D-第二个i]的[C0
对于clickable
:在除iPhone SE之外的所有设备上均可使用:仅从
N-2nd n
开始我不知道为什么会这样,所以如果有人可以在这里帮助我,我非常感谢!更新:
我正在将此Nutzungsbedingungen
用于extension
:UITapGestureRecognizer
extension UITapGestureRecognizer {
func didTapAttributedTextInLabel(label: UILabel, inRange targetRange: NSRange) -> Bool {
// Create instances of NSLayoutManager, NSTextContainer and NSTextStorage
let layoutManager = NSLayoutManager()
let textContainer = NSTextContainer(size: CGSize.zero)
let textStorage = NSTextStorage(attributedString: label.attributedText!)
// Configure layoutManager and textStorage
layoutManager.addTextContainer(textContainer)
textStorage.addLayoutManager(layoutManager)
// Configure textContainer
textContainer.lineFragmentPadding = 0.0
textContainer.lineBreakMode = label.lineBreakMode
textContainer.maximumNumberOfLines = label.numberOfLines
let labelSize = label.bounds.size
textContainer.size = labelSize
// Find the tapped character location and compare it to the specified range
let locationOfTouchInLabel = self.location(in: label)
let textBoundingBox = layoutManager.usedRect(for: textContainer)
let textContainerOffset = CGPoint(x: (labelSize.width - textBoundingBox.size.width) * 0.5 - textBoundingBox.origin.x,
y: (labelSize.height - textBoundingBox.size.height) * 0.5 - textBoundingBox.origin.y);
let locationOfTouchInTextContainer = CGPoint(x: locationOfTouchInLabel.x - textContainerOffset.x,
y: locationOfTouchInLabel.y - textContainerOffset.y);
let indexOfCharacter = layoutManager.characterIndex(for: locationOfTouchInTextContainer, in: textContainer, fractionOfDistanceBetweenInsertionPoints: nil)
return NSLocationInRange(indexOfCharacter, targetRange)
}
但是.textAlignment = .center
代码不知道...它基于从标签的左边缘开始的“ und Datenschutzrichtlinien。”计算位置。您可以尝试解决此问题-快速测试(仅在一台设备上-似乎可以完成这项工作。
在您的
didTapAttributedTextInLabel()
类中,请勿将文档标签居中:
FirstLaunchViewController
[您似乎只使用过一次let documentsLabel: UILabel = { let v = UILabel() // don't do this //v.textAlignment = .center v.numberOfLines = 0 v.translatesAutoresizingMaskIntoConstraints = false return v }()
,这是为了格式化func getAttributedString(...)
的属性文本,所以请如下更改:
documentsLabel
现在,您的func getAttributedString(arrayText:[String]?, arrayColors:[UIColor]?, arrayFonts:[UIFont]?) -> NSMutableAttributedString { let finalAttributedString = NSMutableAttributedString() for i in 0 ..< (arrayText?.count)! { let attributes = [NSAttributedString.Key.foregroundColor: arrayColors?[i], NSAttributedString.Key.font: arrayFonts?[i]] let attributedStr = (NSAttributedString.init(string: arrayText?[i] ?? "", attributes: attributes as [NSAttributedString.Key : Any])) if i != 0 { finalAttributedString.append(NSAttributedString.init(string: " ")) } finalAttributedString.append(attributedStr) } // add paragraph attribute let paragraph = NSMutableParagraphStyle() paragraph.alignment = .center let attributes: [NSAttributedString.Key : Any] = [NSAttributedString.Key.paragraphStyle: paragraph] finalAttributedString.addAttributes(attributes, range: NSRange(location: 0, length: finalAttributedString.length)) return finalAttributedString }
函数应该检测相对于“可轻敲”的单词的正确敲击位置。