Android Question Canvas on PDFView

Douwe Siegersma · Feb 21, 2022

Hello,

I'm using PDFView2 (PDFium) to load and show a PDF file.
I want to draw lines on it by using a canvas but this doesn't work.

B4X:

    Canvas1.Initialize(PDFView1)
    C.DrawLine(100,100,100,500,Colors.Red,5)
    Activity.Invalidate

DonManfred · Feb 21, 2022

PDFView2 is not a view you can use on a Canvas.

You can export any page to an Bitmap and draw this Bitmap on a canvas and then draw lines on this.

Douwe Siegersma · Feb 21, 2022

Hello,

Thank you for your quick reply.
The PDF contains only one page. How do I export this page to a bitmap?
Best regards,

Douwe

DonManfred · Feb 21, 2022

renderPageBitmap or renderPageBitmap2

Douwe Siegersma · Feb 22, 2022

Ok, thank you. I'll try that.

Douwe Siegersma · Feb 22, 2022

Thank you DonManfred, it works fine for me now!
Best regards,

Douwe

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