ios - 解析 Facebook SDK FBSDKGraphRequest 结果

Question

我想检查我当前的 Facebook token (它存在)是否仍然具有用户授予的所有所需权限。

因此，我调用该图来检索与我的 token 关联的所有授予的权限:

    FBSDKGraphRequest(graphPath: "me", parameters: ["fields": "permissions"]).startWithCompletionHandler({ (connection, result, error) -> Void in
        var resultDictionary:NSDictionary!

        if (error != nil) {
            println("ERROR = \(error)")
        }
        else {
            resultDictionary = result as! NSDictionary
            println("1: ---- SUCCESS (result) ----")
            println("\(result)")

// this doesn´t work:
//                var test = resultDictionary.objectForKey("permissions")?.objectForKey("data")! ?? nil
//                var count = test.count
//                println("---- test (\(count))")
//                println(test)

        }
    })

Facebook 的结果是:

{
id = 646571222102633;
permissions =     {
    data =         (
                    {
            permission = "user_friends";
            status = granted;
        },
                    {
            permission = "publish_actions";
            status = granted;
        },
                    {
            permission = "public_profile";
            status = granted;
        }
    );
};
}

因为可能没有/一个/很多权限，所以我想迭代权限/数据下的结果部分。

但我不熟悉将此 NSDictionary 转换为可以计数下面的元素并迭代的东西。

有什么帮助吗？

Answer 1

明白了!

    FBSDKGraphRequest(graphPath: "me", parameters: ["fields": "permissions"]).startWithCompletionHandler({ (connection, result, error) -> Void in
        var resultDictionary:NSDictionary!

        if (error != nil) {
            DebugOutput("ERROR = \(error)")
        }
        else {
            resultDictionary = result as! [String: AnyObject]

            println("---- SUCCESS (result) ----")
            println("\(result)")

            var test = resultDictionary.objectForKey("permissions")?.objectForKey("data")! as! [[String:AnyObject]]
            var count = test.count
            println("---- test (\(count))")
            println(test)

        }
    })

非常感谢:http://ustwo.github.io/tech-blog/2014/08/01/ios-swift-dictionaries/