HTMLWithImagesToPDF

Description

This app showcases the following:

1. Loading an HTML file into a web view (actually both a WKWebView and UIWebView),
2. Generating a PDF using either
   1. the web views' viewPrintFormatter() or
   2. a UIMarkupTextPrintFormatter,
3. Printing a PDF using either
   1. one of the web views' viewPrintFormatter() or
   2. a UIMarkupTextPrintFormatter

Bug

Generating a PDF using a UIMarkupTextPrintFormatter will not render the images of the HTML file. Unless the HTML code has been loaded into a web view beforehand.

1. Run the application.
2. Tap Create PDF and then UIMarkupTextPrintFormatter: a PDF is generated from the index.html file and loaded into both a WKWebView and a UIWebView. Images are not rendered.
3. Tap Load HTML and then index-img.html: the HTML code is loaded into both web views and the images are displayed. The HTML code is not the same as the one we used to generate our PDF (but the img tags are the same).
4. Re-do step 1: tap Create PDF and then UIMarkupTextPrintFormatter: another PDF is generated and loaded into the web views. And this time with images.

This behavior tells me that UIMarkupTextPrintFormatter does support img tags. Also confirmed by the fact that Print PDF > UIMarkupTextPrintFormatter shows a PDF with images (actually only one image is displayed).

Note

The Create PDF > WebView.viewPrintFormatter() action creates a PDF from what each web view is currently displaying, that can either be nothing, one of the HTML loaded beforehand or a PDF loaded from a previous execution.

The Create PDF > UIMarkupTextPrintFormatter action always creates the PDF from the index.html file.