要在UITextView中像Medium.com一样原生呈现内容,可以通过以下步骤实现:
let attributedString = NSMutableAttributedString(string: "Your content")
let paragraphStyle = NSMutableParagraphStyle()
paragraphStyle.lineSpacing = 8
attributedString.addAttribute(.paragraphStyle, value: paragraphStyle, range: NSRange(location: 0, length: attributedString.length))
// 添加其他样式属性
// attributedString.addAttribute(...)
textView.attributedText = attributedString
textView.isEditable = false // 禁止编辑
textView.isSelectable = false // 禁止选择
textView.textContainerInset = UIEdgeInsets(top: 16, left: 16, bottom: 16, right: 16) // 设置边距
textView.isScrollEnabled = false // 禁止滚动
let fixedWidth = textView.frame.size.width
let newSize = textView.sizeThatFits(CGSize(width: fixedWidth, height: CGFloat.greatestFiniteMagnitude))
textView.frame.size = CGSize(width: max(newSize.width, fixedWidth), height: newSize.height)
textView.dataDetectorTypes = .link // 识别链接
textView.isSelectable = true // 允许选择
textView.isEditable = false // 禁止编辑
textView.delegate = self // 设置代理
然后实现UITextViewDelegate的textView(_:shouldInteractWith:in:interaction:)方法,处理链接的点击事件。
extension YourViewController: UITextViewDelegate {
func textView(_ textView: UITextView, shouldInteractWith URL: URL, in characterRange: NSRange, interaction: UITextItemInteraction) -> Bool {
// 处理链接点击事件,比如跳转到其他页面或执行特定操作
return true
}
}
这样就可以实现在UITextView中像Medium.com一样原生呈现内容了。
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