CODEWITHSUNDEEP
iosswiftuiprintpagerenderer
Ilesh P
Ilesh P

Reputation: 4036

UIGraphicsBeginPDFContextToData does not show image after pdf creation

I am working on the HtmltoPDF creation. It is working fine when some image URL but not working with my server image URL.

Working URL downloaded from the google
enter image description here

Issue in the server image URL

enter image description here

I have put here my code for the pdf generation. Please find it

func exportHTMLContentToPDF(HTMLContent: String) -> String {
        let printPageRenderer = IPPrintPageRenderer()

        let printFormatter = UIMarkupTextPrintFormatter(markupText: HTMLContent)
        printPageRenderer.addPrintFormatter(printFormatter, startingAtPageAt: 0)

        let pdfData = drawPDFUsingPrintPageRenderer(printPageRenderer: printPageRenderer)
        let str = "\(Global.kretriveUserData().firstName!.firstCharacter!)\(Global.kretriveUserData().Name!.firstCharacter!)".uppercased()

        pdfFilename = "\(getDocDir())/\(str + invoiceNumber!).pdf"
        pdfData?.write(toFile: pdfFilename, atomically: true)

        print(pdfFilename)
        return pdfFilename
    }


    func drawPDFUsingPrintPageRenderer(printPageRenderer: UIPrintPageRenderer) -> NSData! {
        let data = NSMutableData()

        UIGraphicsBeginPDFContextToData(data, CGRect.zero, nil)
        for i in 0..<printPageRenderer.numberOfPages {
            UIGraphicsBeginPDFPage()
            printPageRenderer.drawPage(at: i, in: UIGraphicsGetPDFContextBounds())
        }
        UIGraphicsEndPDFContext()
        return data
    }

    func getDocDir() -> String {
        return NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0]
    }

You can find a full demo here.

Thanks,

Upvotes: 0

Views: 1239

Answers (1)

Jigar Patel
Jigar Patel

Reputation: 36

To generate a pdf from a webView you need to prepare your HTML code, create the WebView and inject the HTML code inside the webView and in webView didFinishLoading print the HTML content inside the pdf using the same width and height of the webView.

func webViewDidFinishLoad(_ webView: UIWebView) {

    let render = UIPrintPageRenderer()
    render.addPrintFormatter(webView.viewPrintFormatter(), startingAtPageAt: 0);


    let page = CGRect(x: 0, y: 10, width: webView.frame.size.width, height: webView.frame.size.height) // take the size of the webView
    let printable = page.insetBy(dx: 0, dy: 0)
    render.setValue(NSValue(cgRect: page), forKey: "paperRect")
    render.setValue(NSValue(cgRect: printable), forKey: "printableRect")

    // 4. Create PDF context and draw
    let pdfData = NSMutableData()
    UIGraphicsBeginPDFContextToData(pdfData, CGRect.zero, nil)
    for i in 1...render.numberOfPages {

        UIGraphicsBeginPDFPage();
        let bounds = UIGraphicsGetPDFContextBounds()
        render.drawPage(at: i - 1, in: bounds)
    }
    UIGraphicsEndPDFContext();
    let documentsPath = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0]

    print(documentsPath)

    pdfData.write(toFile: "\(documentsPath)/pdfName.pdf", atomically: true)

    self.pdfPath = "\(documentsPath)/pdfName.pdf"
    self.pdfTitle = "pdfName"
    self.performSegue(withIdentifier: "showPDFSegue", sender: nil)
    webView.removeFromSuperview()
    self.loadingScreenViewController.view.removeFromSuperview()
}

Happy coding:)

Upvotes: 2

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