Handling Facebook Graph API result in iOS SDK with Swift - facebook-graph-api

Question

I just want to request data from Facebook's Graph API, e.g. get the current user's basic info.
The Objective-C doc is: https://developers.facebook.com/docs/ios/graph#userinfo
[FBRequestConnection startForMeWithCompletionHandler:^(FBRequestConnection *connection, id result, NSError *error) {
if (!error) {
/* My question: How do I read the contents of "result" in Swift? */
// Success! Include your code to handle the results here
NSLog(#"user info: %#", result);
} else {
// An error occurred, we need to handle the error
// See: https://developers.facebook.com/docs/ios/errors
}
}];
There's no Swift doc yet, and I'm confused about the "result" parameter whose type is "id".

Answer 1

It looks like result contains a dictionary, but it may be nil. In Swift, its type will map to AnyObject?.
So, in Swift, you could do something like:
// Cast result to optional dictionary type
let resultdict = result as? NSDictionary
if resultdict != nil {
// Extract a value from the dictionary
let idval = resultdict!["id"] as? String
if idval != nil {
println("the id is \(idval!)")
}
}
This can be simplified a bit:
let resultdict = result as? NSDictionary
if let idvalue = resultdict?["id"] as? String {
println("the id value is \(idvalue)")
}

Answer 2

Just remember it is not a dictionary all the way down, it is combinations of dictionaries and arrays.
FBRequestConnection.startWithGraphPath("me?fields=feed", completionHandler: { (connection, result, error) -> Void in
if( error == nil){
let fbGraphObject = result as FBGraphObject
let feed = fbGraphObject.objectForKey("feed") as NSMutableDictionary
let data = feed.objectForKey("data") as NSMutableArray
let postDescription = data[0].objectForKey("description") as String
//println( post )
self.fbu.initialUserFeed = feed
self.performSegueWithIdentifier("SelectStreams", sender: self)
}else
{
//TODO Allert to user that something went wrong
println(error)
}
})
I got confused about this in the beginning

Answer 3

This is a simpler way:
let params: [NSObject : AnyObject] = ["redirect": false, "height": 800, "width": 800, "type": "large"]
let pictureRequest = FBSDKGraphRequest(graphPath: "me/picture", parameters: params, HTTPMethod: "GET")
pictureRequest.startWithCompletionHandler({
(connection, result, error: NSError!) -> Void in
if error == nil {
print("\(result)")
let dictionary = result as? NSDictionary
let data = dictionary?.objectForKey("data")
let urlPic = (data?.objectForKey("url"))! as! String
print(urlPic)
} else {
print("\(error)")
}
})
}