B4A Library [B4X][B4XLIB] WebViewPdfExport

Generates a full-content PDF from your WebView. No print dialogs. Automatically opens the system share sheet or saves directly to the device.
Captures the entire page, not just the visible viewport. Multi-page content paginates automatically.
iOS and B4J require no extra setup.
Android's PdfPrint.jar is based on brettwold's gist, enhanced with a completion callback for silent PDF generation.
Usage

Dim pdfExport As WebViewPdfExport
pdfExport.Initialize(myWebView)
Wait For (pdfExport.ExportAndShare("Report.pdf", "Share Report")) Complete (success As Boolean)

or export without the share sheet

Wait For (pdfExport.ExportToFile("Report.pdf")) Complete (success As Boolean)

Setup
Copy WebViewPdfExport.b4xlib to your B4X Additional Libraries folder.

Android only requires a couple of additional steps:

• Unzip and copy PdfPrint.jar to your B4A Additional Libraries folder
• Add to Main.bas:
• #AdditionalJar: PdfPrint.jar
• Add to Manifest Editor
• AddApplicationText(
    <provider
    android:name="android.support.v4.content.FileProvider"
    android:authorities="$PACKAGE$.provider"
    android:exported="false"
    android:grantUriPermissions="true">
    <meta-data
    android:name="android.support.FILE_PROVIDER_PATHS"
    android:resource="@xml/provider_paths"/>
    </provider>
  )
  CreateResource(xml, provider_paths,
     <files-path name="name" path="shared" />
  )

Notes
B4i: The PDF is generated at your WebView's current width. If your HTML has wide tables or layouts, make sure it's responsive or keep columns to a minimum so nothing gets clipped.
B4A: Content is re-rendered at A4 width regardless of screen size, so wider layouts are handled automatically.
B4J: The HTML is saved to a file and opened in the default browser. The user can then print or save as PDF from there — PDF quality depends on the browser's print engine.