小编Mar*_*ado的帖子

我在我的应用程序中成功实现了facebook登录,但我无法从用户查询/检索电子邮件地址.

我有以下代码:

import UIKit

class testViewController: UIViewController, FBSDKLoginButtonDelegate {

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.

        if (FBSDKAccessToken.currentAccessToken() != nil)
        {
            // User is already logged in, do work such as go to next view controller.

            // Or Show Logout Button
            let loginView : FBSDKLoginButton = FBSDKLoginButton()
            self.view.addSubview(loginView)
            loginView.center = self.view.center
            loginView.readPermissions = ["public_profile", "email", "user_friends"]
            loginView.delegate = self
            self.returnUserData()
        }
        else
        {
            let loginView : FBSDKLoginButton = FBSDKLoginButton() …