ios - 如何在 Swift 3 中获取 Facebook 用户 ID、电子邮件、图片类型(大)

Question

我尝试从 Facebook SDK 获取用户 id, email, picture.type(large),updated_time，我成功获取了所有这些但我没有获取图片给我:

Error Cannot call value of non-function type 'Any?!'

下面是我的清晰代码。

    import UIKit
    import Foundation
    
    class LoginViewController : UIViewController, FBSDKLoginButtonDelegate {
       private var fromLogin = [Login]()
       @IBOutlet weak var loginButton : FBSDKLoginButton!
        
        override func viewDidLoad() {
            super.viewDidLoad()
             // Check Session
            if let token = FBSDKAccessToken.current(){
                print(token.tokenString! as Any)
                self.fetchProfile()
            }

            loginButton.delegate = self
            loginButton.readPermissions = ["email", "public_profile"]
    }

    // Get Profile
    func fetchProfile() {
        print("fetch profile")
        
        // Create facebook graph with fields
         FBSDKGraphRequest(graphPath: "me", parameters: ["fields":"id, name, email, picture.type(large), updated_time"]).start { (connection, result, error) in
            
            // check error
            if error != nil {
                // error happen
                print("Failed to start graph request: \(error?.localizedDescription)")
                return
            }
            
            if let userDict = result as? NSDictionary {
                let name = userDict["name"] as? String
                let id = userDict["id"] as? String
                let email = userDict["email"] as? String

                // HERE GIVES ERROR I DIDNT GET PICTURE WITH STRING    
                let userPicture = userDict.objectForKey("picture")?.objectForKey("data")?.objectForKey("url") as String

                print(userPicture)
                print(name as Any)
                print(id as Any)
                print(email as Any)
        }
    }
}

// Delegate Method
func loginButton(_ loginButton: FBSDKLoginButton!, didCompleteWith result: FBSDKLoginManagerLoginResult!, error: Error!){
    // check error
    if error != nil {
        // error happen
        print(error?.localizedDescription as Any)
        return
    }
    
    print("Successfull login in with facebook...")
    fetchProfile()
}

func loginButtonDidLogOut(_ loginButton: FBSDKLoginButton!){
    print("Log Out")
}

这一行报错；

let userPicture = userDict.objectForKey("picture")?.objectForKey("data")?.objectForKey("url") as String

此处还有图片对象json数据示例；

 picture =     {
        data =         {
            "is_silhouette" = 0;
            url = "https://scontent.xx.fbcdn.net/v/t1.0-1/p200x200/14067524_9513823423422249533237851_n.jpg?oh=88eb9b80abbb2342346c01de298&oe=58C5138B";
        };
    };

我正在使用 Xcode 8.1 和 Swift 3.0

Answer 1

这需要简单的解析..“图片”是字典，“数据”也是。所以像下面这样的东西适合你

guard let userDict = result as? [String:Any] else { return }

let name  = userDict["name"] as? String
let id    = userDict["id"] as? String
let email = userDict["email"] as? String

if let picture = userDict["picture"] as? [String:Any] ,  
   let imgData = picture["data"] as? [String:Any] ,   
   let imgUrl = imgData["url"] as? String {   
      print(imgUrl)   
}