IOS的Facebook SDK：登录不会返回电子邮件，尽管授予了许可 [英] IOS Facebook SDK: login doesn't return email despite permissions granted

问题描述

我正在通过facebook sdk获取信息，但到目前为止，我只得到用户的身份和名称，尽管我确信有一封电子邮件，因为它是我的帐户。我一直在看几个答案，但是迄今没有人解决我的问题。
我做错了什么，为什么我不要求几个权限返回更多的数据？

I'm trying to get information through the facebook sdk but so far I'm getting only the id and the name of the user, although I'm sure there is an email available, as it is my account. I've been looking at several answer here but none of them solved my problem so far. What am I doing wrong, and why is it not returning more data as I am requesting several permissions?

这是我的代码：

fbLoginManager.logInWithReadPermissions(["public_profile", "email", "user_friends", "user_about_me", "user_birthday"], handler: { (result, error) -> Void in
        if ((error) != nil)
        {
            // Process error
            println("There were an error: \(error)")
        }
        else if result.isCancelled {
            // Handle cancellations
            fbLoginManager.logOut()
        }
        else {
            var fbloginresult : FBSDKLoginManagerLoginResult = result
            if(fbloginresult.grantedPermissions.contains("email"))
            {
                println(fbloginresult)
                self.returnUserData()
            }
        }
    })

获取用户数据：

func returnUserData()
{
    let graphRequest : FBSDKGraphRequest = FBSDKGraphRequest(graphPath: "me", parameters: nil)
    graphRequest.startWithCompletionHandler({ (connection, result, error) -> Void in

        if ((error) != nil)
        {
            // Process error
            println("Error: \(error)")
        }
        else
        {
            println("fetched user: \(result)")

            if let userName : NSString = result.valueForKey("name") as? NSString {
                println("User Name is: \(userName)")
            }
            if let userEmail : NSString = result.valueForKey("email") as? NSString {
                println("User Email is: \(userEmail)")
            }
        }
    })
}

哪些返回：

fetched user: {
id = 55555555;
name = "Kali Aney";
}
User Name is: Kali Aney

推荐答案

Facebook Graph API破坏了它的向后兼容性（以默认方式使用）由于Graph-API版本2.4（Pod版本4.4.0）。

Facebook Graph API broke it’s backward compatibility (when used in a default fashion) Since Graph-API version 2.4 (Pod Version 4.4.0).

FB Graph-API 2.4不返回用户的所有默认字段

要解决此问题，您可以使用明确的图形版本2.3：

To resolve this you can either use explicitly graph version 2.3:

[[FBSDKGraphRequest alloc] initWithGraphPath：@me参数：nil tokenString：[FBSDKAccessToken currentAccessToken] .tokenString版本：@v2.3HTTPMethod：nil]


在这种情况下，FB保证v2.3将至少在现在两年后可用。
https://developers.facebook.com/docs/graph-api/overview ：

in which case FB assures v2.3 will be available at least 2 years from now. https://developers.facebook.com/docs/graph-api/overview:

Graph API有多个版本可供任何一个
访问。每个版本包含一组核心字段和边缘操作。
我们保证这些核心API将可用，并且
在该版本中未被修改至少2年。
平台更改日志可以告诉您目前有哪些版本
可用。

The Graph API has multiple versions available to access at any one time. Each version contains a set ofcore fields and edge operations. We make a guarantee that those core APIs will be available and un-modified in that version for at least 2 years from release. The platform changelog can tell you which versions are currently available.

OR

您可以通过询问您感兴趣的特定字段来使用新的Graph-API（v2.4）：

you can use new Graph-API (v2.4) in by asking for specific fields you are interested in:

[[FBSDKGraphRequest alloc] initWithGraphPath：@me参数：@ {@fields：@email，name}]

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