获取电子邮件并命名Facebook SDK v4.4.0 Swift [英] Get email and name Facebook SDK v4.4.0 Swift

问题描述

TL; TR:如何获取使用Facebook SDK 4.4在我的应用程序上登录的用户的电子邮件和名称

TL;TR: How do I get the email and name of a user that is logged in on my app using the facebook SDK 4.4

到目前为止，我已经成功登录，现在可以从应用程序中的任何位置获取当前访问令牌.

So far I have managed to get login working, now I can get the current access token from anywhere in the app.

我如何配置我的登录视图控制器和Facebook登录按钮:

How I have my login view controller and facebook login button configured:

class LoginViewController: UIViewController, FBSDKLoginButtonDelegate {

    @IBOutlet weak var loginButton: FBSDKLoginButton!

    override func viewDidLoad() {
        super.viewDidLoad()
        if(FBSDKAccessToken.currentAccessToken() == nil)
        {
            print("not logged in")
        }
        else{
            print("logged in already")
        }

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

    }

    //MARK -FB login
    func loginButton(loginButton: FBSDKLoginButton!, didCompleteWithResult result: FBSDKLoginManagerLoginResult!, error: NSError!) {
        //logged in
        if(error == nil)
        {
            print("login complete")
            print(result.grantedPermissions)
        }
        else{
            print(error.localizedDescription)
        }

    }

    func loginButtonDidLogOut(loginButton: FBSDKLoginButton!) {
        //logout
        print("logout")
    }

现在在我的主视图中，我可以像这样获得访问令牌:

Now on my main view I can get the access token like so:

   let accessToken = FBSDKAccessToken.currentAccessToken()
    if(accessToken != nil) //should be != nil
    {
        print(accessToken.tokenString)
    }

如何从登录的用户那里获得名称和电子邮件，使用较旧的SDK或使用Objective-C，我会看到很多问题和答案.

How do I get the name and email from the user that is logged in, I see many question and answers using eather an older SDK or using Objective-C.

推荐答案

我已经在android中使用了fields，所以我也想在iOS中也尝试使用它，并且可以使用.

I've used fields in android, so I figured to try it in iOS as well, and it works.

let req = FBSDKGraphRequest(graphPath: "me", parameters: ["fields":"email,name"], tokenString: accessToken.tokenString, version: nil, HTTPMethod: "GET")
   req.startWithCompletionHandler({ (connection, result, error : NSError!) -> Void in
       if(error == nil) {
            print("result \(result)")
       } else {
            print("error \(error)")
       }
   }
)

结果将打印:

result {
   email = "[e-mail]";
   id = 123456789;
   name = "Your Name";
}

发现这些字段等于User端点，请参见此链接，您可以在其中查看可以获取的所有字段.

Found that these fields are equal to the User endpoint, see this link where you can see all the fields that you can get.

针对Swift 4及更高版本进行更新

Update for Swift 4 and above

let r = FBSDKGraphRequest(graphPath: "me",
                          parameters: ["fields": "email,name"],
                          tokenString: FBSDKAccessToken.current()?.tokenString,
                          version: nil,
                          httpMethod: "GET")

r?.start(completionHandler: { test, result, error in
    if error == nil {
        print(result)
    }
})

使用FBSDKLoginKit 6.5.0更新Swift 5

Update for Swift 5 with FBSDKLoginKit 6.5.0

guard let accessToken = FBSDKLoginKit.AccessToken.current else { return }
let graphRequest = FBSDKLoginKit.GraphRequest(graphPath: "me",
                                              parameters: ["fields": "email, name"],
                                              tokenString: accessToken.tokenString,
                                              version: nil,
                                              httpMethod: .get)
graphRequest.start { (connection, result, error) -> Void in
    if error == nil {
        print("result \(result)")
    }
    else {
        print("error \(error)")
    }
}

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