Facebook graph api 如何获取Firebase用户的名字

我有一个通过Firebase身份验证的用户。我可以得到他们的显示名称，但想知道如何得到他们的名字只。我是否必须使用某种令牌来调用FB Graph API

诚恳 维沙尔

是的，你需要获得一个令牌，它基本上允许你获取用户的Facebook详细信息

一旦您获得了一个经过验证的令牌，那么您就可以使用FB Graph API来提取基本信息

下面是一个示例代码

let credential = FIRFacebookAuthProvider.credential(withAccessToken: accessToken.tokenString)
        FIRAuth.auth()?.signIn(with: credential, completion: { (user, error) in
            if let error = error
                {
                    print("Login error: \(error.localizedDescription)")
                    let alertController = UIAlertController(title: "Login Error", message: error.localizedDescription, preferredStyle: .alert)
                    let okayAction = UIAlertAction(title: "OK", style: .cancel, handler: nil)
                    alertController.addAction(okayAction)
                    self.present(alertController, animated: true, completion: nil)

                    return
                }
            if((FBSDKAccessToken.current()) != nil) {
                var request = FBSDKGraphRequest(graphPath: "me", parameters:["fields":"first_name,last_name,email"],  httpMethod: "GET")
                request?.start(completionHandler: {(connection,result,error) -> Void in
                if (error == nil)
                {
                    var dictionary_user_info = result as? NSDictionary
                    let v_firstname = dictionary_user_info?.object(forKey: "first_name") as! String
                    let v_lastname = dictionary_user_info?.object(forKey: "last_name") as! String
                    let v_email = dictionary_user_info?.object(forKey: "email") as! String
                    }
                  }
                }

是的，你需要获得一个令牌，它基本上允许你获取用户的Facebook详细信息

一旦您获得了一个经过验证的令牌，那么您就可以使用FB Graph API来提取基本信息

下面是一个示例代码

let credential = FIRFacebookAuthProvider.credential(withAccessToken: accessToken.tokenString)
        FIRAuth.auth()?.signIn(with: credential, completion: { (user, error) in
            if let error = error
                {
                    print("Login error: \(error.localizedDescription)")
                    let alertController = UIAlertController(title: "Login Error", message: error.localizedDescription, preferredStyle: .alert)
                    let okayAction = UIAlertAction(title: "OK", style: .cancel, handler: nil)
                    alertController.addAction(okayAction)
                    self.present(alertController, animated: true, completion: nil)

                    return
                }
            if((FBSDKAccessToken.current()) != nil) {
                var request = FBSDKGraphRequest(graphPath: "me", parameters:["fields":"first_name,last_name,email"],  httpMethod: "GET")
                request?.start(completionHandler: {(connection,result,error) -> Void in
                if (error == nil)
                {
                    var dictionary_user_info = result as? NSDictionary
                    let v_firstname = dictionary_user_info?.object(forKey: "first_name") as! String
                    let v_lastname = dictionary_user_info?.object(forKey: "last_name") as! String
                    let v_email = dictionary_user_info?.object(forKey: "email") as! String
                    }
                  }
                }