Question

Facebook recently introduced the “Built-in Like” as a built-in Open Graph action (see blogpost and documentation). I would like to implement this functionality in my iOS App and be able to listen to the event, when the user completes the like action (similarly to using FB.Event.subscribe in JavaScript). Is this posible and how would you accomplish this?

Answer 1

From the documentation you linked:

To publish a built-in Like action on an Open Graph object, invoke the following HTTP POST request with a user’s access token and the url
of the Open Graph object. This Open Graph object can be of any type.

[example snipped]

which in turn will return the ID of the built-in Like action instance if the call is successful`

The API call itself, which your app makes, will return the ID of the newly created object, there’s no special or separate callback – your own code is creating the Like action.