问题
I have a website serving free mp3-downloads and I would like them to be only available for facebook fans of the fb-page of the website. The links are thus hidden unless the user is a fan.
I have reached partial functionality by subscribing to the 'edge.create' event, but this event is not fired when the like box is loaded and the page has already been liked.
I don't really know what the best way to do this is, or whether it's possible at all without user permission. Most information on facebook forums is horribly outdated and a lot of it is related to on-facebook facebook apps/tabs, which is not my case.
To clarify: my facebook like button is on my own domain, in my own code.
回答1:
This is not possible without user permission. You need to ask the user for the user_likes permission as documented here.
来源：https://stackoverflow.com/questions/6632179/how-can-i-check-if-the-fblike-button-is-already-pressed-on-my-own-page