如何在swift中使用DTCoreText (DTWillFlushBlockCallBack)

pod 'DTCoreText'

import DTCoreText

let textView = DTAttributedTextView(frame: CGRect(x: 0, y: 0, width: 200, height: 200))
textView.shouldDrawImages = true
textView.shouldDrawLinks = true
textView.delegate = self

let htmlString = "<p>This is a <strong>sample</strong> text.</p>"
let data = htmlString.data(using: .utf8)
let options = [DTUseiOS6Attributes: true]
let attributedString = NSAttributedString(htmlData: data, options: options, documentAttributes: nil)
textView.attributedString = attributedString

extension ViewController: DTAttributedTextContentViewDelegate {
    func attributedTextContentView(_ attributedTextContentView: DTAttributedTextContentView, viewForLink url: URL, identifier: String, frame: CGRect) -> UIView? {
        // 处理链接点击事件
        return nil
    }
}