Trigger.io Facebook integration "unexpected read permissions" on some iOS devices

Question

On an iOS 6 iPad the Facebook modal permissions dialog pops up, but when accepted it appears to do nothing.

The following error appears in our logs:

Jan 16 11:57:50 CloudPad Forge[21287] <Warning>: [DEBUG] Native call: {
        callid = "2CB2131C-771C-466D-9640-D1FF99AB3E4B";
        method = "facebook.authorize";
        params =     {
            dialog = 1;
            permissions =         (
                "user_photos",
                "publish_stream",
                email
            );
        };
    }
Jan 16 11:57:50 CloudPad Forge[21287] <Warning>: FBConditionalLog: FBSession: a permission request for publish or manage permissions contains unexpected read permissions

Jan 16 11:57:53 CloudPad Forge[21582] <Warning>: [DEBUG] Returning to javascript: {
        callid = "EE3606FC-84D6-4F3F-8BC6-82FAF3BEC5EF";
        content =     {
            message = "The operation couldn\U2019t be completed. (com.facebook.sdk error 2.)";
            subtype = "<null>";
            type = "UNEXPECTED_FAILURE";
        };
        status = error;     }

The same app works fine with Facebook auth on different devices, some iOS 6, some others.

Halp!

Answer 1

It looks like you're requesting read (user_photos and email) and write (publish_stream) permissions in the same call - this is not supported in the iOS SDK, see here:

https://developers.facebook.com/docs/howtos/ios-6/

Note, to use iOS 6 native auth, apps need change the way they request permissions from users - apps must separate their requests for read and write permissions. The Facebook SDK for iOS supports these features and helps developers use them to build apps that work on multiple iOS versions and device configurations.