I'm currently developing an iOS application that needs do display Rich-Media-PDF's. We do all know that iOS has it's troubles in dealing with Multimedia PDF's especially in the standard preview.
My question is: Can I redirect the „View PDF" button of my App to an external websites that has absolutely no content but a script running in the background making the iPad launch the Acrobat Reader to display the PDF on the iPad, given the Acrobat Reader is installed on the device that opens the script page?
In theory, yes you can. For iOS apps, there are these things called URL schemes. Basically, each app can have a scheme similar to a website (i.e. myapp://do/something).
So the user in your app would click "View PDF", and it would open Safari and redirect to your web page. On this page you can have a script that calls to open the Acrobat Reader app.
The problem is that I'm not sure if Adobe has enabled this app URL in their Acrobat Reader app. I did a quick Google but couldn't find anything, but if they do have one it would be something like (adobeacrobat://). If you can confirm that the Acrobat Reader app does indeed have a url scheme set up, then yes you can definitely do this.