使用 PDF 中的可点击链接在 Swift 中创建 PDF

Question

I want to generate PDF from data with clickable link inside. I have created PDF using SimplePDF ( https://github.com/nRewik/SimplePDF ) library but couldn't find the way to how make link clickable.

Help will be appreciated.

Answer 1

Try this as text on your pdf

let attributedString = NSMutableAttributedString(string: "Life Saver!")
attributedString.addAttribute(.link, value: "https://www.stackoverflow.com", range: NSRange(location: 19, length: 55))
textView.attributedText = attributedString

Answer 2

My problem was, that I created the PDF from a IB-constructed view. I used writePDF and rendered the entire view with view.layer.render(in: context.cgContext) , and the attributed texts within the labels or text views weren't clickable (although they appeared well). So I had to add it as an extra text:

mutableString.draw(in: CGRect(x: 0, y: 0, width: 500, height: 200))

This is the core of my solution:

    let pdfRenderer = UIGraphicsPDFRenderer(bounds: pdfView.bounds)

    do {
        try pdfRenderer.writePDF(to: outputFileURL, withActions: { context in
            context.beginPage()
            pdfView.layer.render(in: context.cgContext)
            mutableString.draw(in: CGRect(x: 0, y: 0, width: 500, height: 200))
        })
    } catch {
        print("Could not create PDF file: \(error)")
    }

This seems to be working from iOS 15 however.