Swift version of Facebook iOS SDK and how to access data in Response - swift

Question

I have taken over a Swift project and need to add Facebook login functionality. I am getting it to mostly work but am having a problem with this sample code here (https://developers.facebook.com/docs/swift/graph):
import FacebookCore
struct MyProfileRequest: GraphRequestProtocol {
struct Response: GraphResponseProtocol {
init(rawResponse: Any?) {
// Decode JSON from rawResponse into other properties here.
}
}
var graphPath = "/me"
var parameters: [String : Any]? = ["fields": "id, name"]
var accessToken = AccessToken.current
var httpMethod: GraphRequestHTTPMethod = .GET
var apiVersion: GraphAPIVersion = .defaultVersion
}
let connection = GraphRequestConnection()
connection.add(MyProfileRequest()) { response, result in
switch result {
case .success(let response):
print("Custom Graph Request Succeeded: \(response)")
print("My facebook id is \(response.dictionaryValue?["id"])")
print("My name is \(response.dictionaryValue?["name"])")
case .failed(let error):
print("Custom Graph Request Failed: \(error)")
}
}
connection.start()
I'm getting an error on compiling the for the line with the dictionaryValue optional saying /Users/jt/a-dev/tabfb/tabfb/LoginViewController.swift:72:31: Value of type 'MyProfileRequest.Response' has no member 'dictionaryValue' . How would I access the user name or id using this?

Answer 1

I faced this problem today as well. I got the user id and name inside MyProfileRequest
struct Response: GraphResponseProtocol {
init(rawResponse: Any?) {
// Decode JSON from rawResponse into other properties here.
guard let response = rawResponse as? Dictionary<String, Any> else {
return
}
if let name = response["name"],
let id = response["id"] {
print(name)
print(id)
}
}
}
EDIT: I redesigned my code like this to use the values in .success(let response) case
struct Response: GraphResponseProtocol {
var name: String?
var id: String?
var gender: String?
var email: String?
var profilePictureUrl: String?
init(rawResponse: Any?) {
// Decode JSON from rawResponse into other properties here.
guard let response = rawResponse as? Dictionary<String, Any> else {
return
}
if let name = response["name"] as? String {
self.name = name
}
if let id = response["id"] as? String {
self.id = id
}
if let gender = response["gender"] as? String {
self.gender = gender
}
if let email = response["email"] as? String {
self.email = email
}
if let picture = response["picture"] as? Dictionary<String, Any> {
if let data = picture["data"] as? Dictionary<String, Any> {
if let url = data["url"] as? String {
self.profilePictureUrl = url
}
}
}
}
}
And in the success case you can get the values like this:
let connection = GraphRequestConnection()
connection.add(MyProfileRequest()) { response, result in
switch result {
case .success(let response):
print("My facebook id is \(response.id!)") //Make sure to safely unwrap these :)
print("My name is \(response.name!)")
case .failed(let error):
print("Custom Graph Request Failed: \(error)")
}
}
connection.start()

Answer 2

import FBSDKLoginKit //FBSDKLoginKit installs automatically when you install FacebookCore through CocoaPods
///Inside your view controller
func loginButton(_ loginButton: FBSDKLoginButton!, didCompleteWith result: FBSDKLoginManagerLoginResult!, error: Error!) {
/// DEFAULT
//fired when fb logged in through fb's default login btn
if error != nil {
print(error)
return
}
showDetails()
}
fileprivate func showDetails(){
FBSDKGraphRequest(graphPath: "/me", parameters: ["fields": "id, name, first_name, last_name, email, gender"]).start { (connection, result, err) in
////use link for more fields:::https://developers.facebook.com/docs/graph-api/reference/user
if err != nil {
print("Failed to start graph request:", err ?? "")
return
}
let dict: NSMutableDictionary = result as! NSMutableDictionary
print("The result dict of fb profile::: \(dict)")
let email = dict["email"] as! String!
print("The result dict[email] of fb profile::: \(email)")
let userID = dict["id"] as! String
print("The result dict[id] of fb profile::: \(userID)")
// self.profileImage.image = UIImage(named: "profile")
let facebookProfileUrl = "http://graph.facebook.com/\(userID)/picture?type=large"
}
}
//make sure you add read permissions for email and public profile
override func viewDidLoad(){
super.viewDidLoad()
loginButtonFromFB.delegate = self //inherit FBSDKLoginButtonDelegate to your class
loginButtonFromFB.readPermissions = ["email", "public_profile"]
}