应用程序请求的Facebook iOS SDK Pass参数

Question

I would like to have my native iOS app send a request with a parameter to a Facebook user on iOS. If they accept, it will launch my native iOS app and pass it the parameter. Is this possible?

I am having marginal success using [facebook dialog:@"apprequests" andParams:dict andDelegate:self]. I am getting the bookmark counter to increment on Facebook iOS app, but I do not see the individual requests. If I tap the bookmark it launches my app but I do not see how I can get the "data" parameter I passed with the request, or even the request_id.

On desktop I see the individual messages under "Requests" section of "Apps and Games". If I accept a request, I can see it pass the request_id to my (simple echo) canvas URL. I read this can be used to fetch the associated data. But, this does not help me on iOS. My app only runs on iOS, so this canvas app will eventually just be a "this app only works on iOS," but it seemed to be necessary to get the requests to flow.

Neither of these are showing me Notifications, so maybe I am doing something basic wrong. Or, is there some other way to pass a message to a Facebook user, with a URL they could click (to launch and feed my app its parameter).

One other odd thing, I do not see how to get rid of the Requests. If I "X" them on the desktop client, it asks me if I want to stop receiving all requests from my app, and if I say no, it only hides them temporarily.

Answer 1

Leif, Hi - I'm the engineer at Facebook who wrote the tutorial you've referenced. I've taken a look at the issue you've mentioned - this is in fact not a bug in the documentation and is by design.

The incoming url from a request on iOS looks something like this:

fb480369938658210://authorize?expires_in=3600&access_token=BAAG05NeN86IBAC31YWMWRHVrNCAYMy0Rv1OtqZCwdH8QDBUAt5KgZCsIbU0EOZAvMms2tZCANV9sZBWSkEzStDtt4i7YnYZA4bPgGx2XaI5s22iBMxIZAneZAv7ADi3Wi20ZD&target_url=http%3A%2F%2Fm.facebook.com%2Fapps%2Ffriendsmashsample%3Ffb_source%3Dnotification%26request_ids%3D364209433669109%252C379616028785376%252C494409170593789%252C489782271042929%252C328564930575784%26ref%3Dnotif%26app_request_type%3Duser_to_user

This is bundling together several requests, with multiple request ids into a single url.

To get the extra data coupled with this request, it is not required to have the user_id. Hitting graph.facebook.com/*request_id* is enough.

You can actually see this outlined in the documentation here: https://developers.facebook.com/docs/requests/#deleting under the 'Request ID Format' heading.

The code contained in the Friendsmash sample and on the tutorial works correctly - I verified it just now. So it should serve as a good guide to the OP's question.

Thanks!

Answer 2

I have been struggling with this too.

First, the FB iOS SDK requests tutorial is a good start.

However, there are also a few bugs that makes things not work as expected:

• It seems that currently, a mobile web url has to be set up for the FB app in order for requestIds to be forwarded from the native FB app to your native app. See this bug report .
• The tutorial mentioned above uses an erroneous graph path for the request object. I uses "request-id" where it should be "request-id"_"user-id". I have filed a documentation bug report on that issue.