Generate PDF page thumbnails in Xamarin

This tutorial only applies to Xamarin.Android.

Apryse's library provides a page thumbnail dialog which shows thumbnails of all PDF document pages. Fore more information, see thumbnail browser .

With PDFViewCtrl, you can get a thumbnail Bitmap image for each page in a PDF document.

The following example request thumbnail for page 3:

C#

pdfViewCtrl.ThumbAsync += (sender, e) =>
{
    var bitmap = Bitmap.CreateBitmap(e.Width, e.Height, Bitmap.Config.Argb8888);
    bitmap.SetPixels(e.Buf, 0, e.Width, 0, 0, e.Width, e.Height);
    // use the bitmap
};

// request thumbnail for page 3
pdfViewCtrl.GetThumbAsync(3);

where pdfViewCtrl is an instance of PDFViewCtrl.

It is recommended you cancel all thumbnail requests once they are no longer needed. To cancel all thumbnail request, use PDFViewCtrl.cancelAllThumbRequests().