One question before purchase

I need to add last page that contains text and buy button to existing pdf file, and handle click on that button.

Is that can be done with your SDK? If yes, which license i need?

Sample of last page that should be inserted into viewer:

add link to PDF file? currently, we not supply this feature.
so you need use other tools to add link to page.

another way is: place button on view when last page displayed.
implement callback:
PDFViewListener.onPageDisplayed
and check page_no equals to page_count - 1.

i need to add last page to pdfviewer that ll display following disk.tom.ru/41sr8h4 , and do it programmatically

is there way to do it and make it to look it like other content in pdf document (zooming, moving like all other pages in document)? in way of adding view i think it will look very "different", or im wrong?

And one more (i hope last) question: can I render pdf pages into bitmaps to create thumbnails?

the callback "PDFViewListener.onPageDisplayed" returned
tell you following informations:
--pageno
--page area in view(in view coordinate).
--displayed ratio(scale vale).
so you can create a popup view on PDFView
and move position and do scale font size for each callback.

this should be OK for PDFView, but not for thumbView.
thumbView has no this callback.

sorry, but it doesn't answer my question, can i render a page of pdf into bitmap to create thumbnails? (without ThumbView cause it draws thumbnails in list and i need to draw thumbnails in grid).