TLCL | & quot Happy Linux Command Line & quot

Trying to make Android chooser to display available actions for user to launch a PDF file which is stored in my local folder. When I pass the file name like /data/user/0/myappappname/files/output.pdf , (which exsists, of course), I get a nice chooser with all the apps that can accept a pdf file. But when I pick any of them, I get an error (from external app) The document path is not valid. No exception is thrown.

Then I tried (for testing purposes) to set fname to something like /storage/emulated/0/Download/TLCL.pdf (file also exists), and everything works fine.

At first, I thought that this has something to do with file permissions (since first path is private to my app), but then I found flag ActivityFlags.GrantReadUriPermission built exactly for purpose of temporarily granting file access to other apps. Still same results.

Since this is a Xamarin.forms project, I am limited in choice of file creation locations (I use PCLStorage, which always writes to app-private, local folder), so I don't have an option of generating files in /Documents, /Downloads etc.

I am obviously doing something wrong. Any ideas appreciated.

Is there an option to get full path from system, including the /storage/emulated/0 part (or whatever that would be on other devices)? Maybe that would help?

Piece of code:

(mimeType is defined as "application/pdf" earlier)