Question

Is there anyway to know if a user has a app installed dy using Facebook?
I was thinking there may be a way because it asks for permissions from the user, so I’m sure its something that registers.
I want to be able to tell a user if any friends on Facebooka particular app installed that uses Facebook. If so tell them who.

Answer 1

Try this FQL.

SELECT uid, name, pic_square FROM user WHERE is_app_user  AND uid IN (SELECT uid2 FROM friend WHERE uid1 = me())

I can see an Android Tag. Try this Android Application (component)

Saved me a week of questioning how to make Facebook, android application