Essential Books

Fetching the facebook user data

suggest change

After the user signed in to Facebook at your app, now it’s time to fetch the data you requested at the FBButton.readPermissions.

Swift: 

enum FacebookParametesField : String
{
    case FIELDS_KEY = "fields"
    case FIELDS_VALUE = "id, email, picture, first_name, last_name"
}

if FBSDKAccessToken.currentAccessToken() != nil
{
//  Getting user facebook data
FBSDKGraphRequest(graphPath: "me", 
                 parameters: [FacebookParametesField.FIELDS_KEY.rawValue : FacebookParametesField.FIELDS_VALUE.rawValue])
.startWithCompletionHandler({ (graphConnection : FBSDKGraphRequestConnection!, result : AnyObject!, error : NSError!) -> Void in
    
        if error == nil
        {
            print("Facebook Graph phaze")

            let email = result["email"]
            let facebookToken = FBSDKAccessToken.currentAccessToken().tokenString
            let userFacebookId = result["id"]
            let firstName = result["first_name"]
            let lastName = result["last_name"]
            
            if let result = result as? Dictionary<String, AnyObject>
            {
                if let picture = result["picture"] as? Dictionary<String,AnyObject>
                {
                    if let data = picture["data"] as? Dictionary <String,AnyObject>
                    {
                        if let url = data["url"] as? String
                        {
                            //  Profile picture URL
                            let profilePictureURL = url
                        }
                    }
                }
            }
        }
    })
}
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FacebookSDK:
* Creating your own custom Sign In With Facebook button
* FacebookSDK Integration
* Fetching the facebook user data
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