Inviting Facebook friends through iPhone App

I've been searching this question, and I haven't been able to find anything that works. I have an iPhone app that allows users to link their Facebook account. It would look something like this:

Once a user has successfully linked to FB, I want to present them with a list of their FB friends and an option to invite selected friends.

FB Friend 1........... Invite

FB Friend 2........... Invite

...

FB Friend 1000..... Invite

Basically, I want to send a message to FB friends that says something like "Check out this app". I'm pretty sure this has to go to either their notifications or wall and cannot go as a FB message, but I can't figure out how to do it.

Also,开发者_如何学Go I don't need to select a group of friends to invite -- this can be done one at a time. So it would look like this:

FB Friend 1........... invited

FB Friend 2........... Invite

...

FB Friend 1000..... Invite

Thanks so much for any help you can provide.

Unfortunately there isn't anything in the iOS SDK that presents the apprequests dialog, and a user has to have installed/approved your application before you can send them application notifications via a POST request...

Requests are a great way to enable users to invite their friends, accept a gift or help them complete a mission in your app. There are now two types of requests that can be sent from an app:

User-generated requests: These requests are confirmed by a user’s explicit action on a request dialog. These requests update the bookmark count for the recipient. You send requests by using the recently launched Request Dialog.

App-generated requests: These requests can be initiated and sent only to users who have authorized your app. Developers can send these requests using the Graph API. Use these requests to update the bookmark count to encourage a user to re-engage in the app (e.g., your friend finished her move in a game and it’s now your turn).

The only way to get this is via Facebook's Requests 2.0 dialog (which is not currently available to the Facebook iOS SDK):

http://developers.facebook.com/blog/post/453

See more here in this related question...

Sending application requests that appear in the left column on Facebook home page?