Offline Access. Verifying Access Token?

Question

I have offline access to post on a users wall, but before I post, is it possible to check if I actually have permission i.e. by verifying the access token or by using another solution?

Sometimes I am getting "Error processing Access Token" which makes me think the user has removed the application or denied access to post on their wall.

Answer 1

Yes, though not with the new Graph API.

You'll need to use the users.hasAppPermission method of the old REST API to verify whether the user has granted you an extended permission.