Facebook friends list api for swift ios

Question

I have tried to get the facebook friends list for an IOS app, but receiving empty response from facebook.

How to get face book friends list in swift?

Answer 1

In Graph API v2.0 or above, calling /me/friends returns the person's friends who installed the same apps. Additionally, you must request the user_friends permission from each user. user_friends is no longer included by default in every login. Each user must grant the user_friends permission in order to appear in the response to /me/friends.

To get the list of friends who are using your app use following code:

    let params = ["fields": "id, first_name, last_name, middle_name, name, email, picture"]
    let request = FBSDKGraphRequest(graphPath: "me/friends", parameters: params)
    request.startWithCompletionHandler { (connection : FBSDKGraphRequestConnection!, result : AnyObject!, error : NSError!) -> Void in

        if error != nil {
            let errorMessage = error.localizedDescription 
            /* Handle error */
        }
        else if result.isKindOfClass(NSDictionary){
            /*  handle response */
        }
    }

If you want to access a list of non-app-using friends, then use following code:

    let params = ["fields": "id, first_name, last_name, middle_name, name, email, picture"]
    let request = FBSDKGraphRequest(graphPath: "me/taggable_friends", parameters: params)
    request.startWithCompletionHandler { (connection : FBSDKGraphRequestConnection!, result : AnyObject!, error : NSError!) -> Void in

        if error != nil {
            let errorMessage = error.localizedDescription 
        }
        else if result.isKindOfClass(NSDictionary){    
            /* Handle response */
        }
    }

Answer 2

For fetching the friend list must allow user permission user_friends at the time of login. For swift 3.0 add below code for fetching friend list:

let params = ["fields": "id, first_name, last_name, middle_name, name, email, picture"]
    FBSDKGraphRequest(graphPath: "me/taggable_friends", parameters: params).start { (connection, result , error) -> Void in

        if error != nil {
            print(error!)
        }
        else {
            print(result!)
            //Do further work with response
        }
    }

I hope it works!