If I check this: http://schemes.zwapp.com/ the url scheme for Adobe Reader in iPad is: com.adobe.Adobe-Reader:
So I created a link in my web-page pointing to: com.adobe.Adobe-Reader://mysite.com/sample.pdf
Clicking the link launches Adobe Reader but it won't download and open the pdf from the url specified. I have tried various variations of the link including:
com.adobe.Adobe-Reader://http://mysite.com/sample.pdf
com.adobe.Adobe-Reader://edit?url=http://mysite.com/sample.pdf
but none of these work. Adobe Reader opens but it does not open the pdf (the link to pdf is fine, I checked by opening separately in browser).
What am I doing wrong? How can I make a app open a specific document by using its url scheme in the browser anchor link.
I don't think you're doing anything wrong. According to this Adobe thread, the Reader app doesn't (yet) support linked references to specific PDFs, but may in a future release. (Or if it does, they're not telling anyone how just yet).
There's an email contact to Adobe at the bottom of that thread that might be able to help more and/or that you might be able to bug to get this feature implemented sooner rather than later.