输入'Any？'没有下标成员 [英] Type 'Any?' has no subscript members

问题描述

我正在尝试在我的应用中登录fb后检索电子邮件ID。但是，当我尝试从结果中获取值时，我收到错误。

I am trying to retrieve email id after fb login in my app. However I am getting an error when i try to get the value from result.

错误是：输入'Any？'没有下标成员。

func fetchProfile()
{
    print("Fetch Profile")
    let parameters = ["fields": "email, first_name, last_name,  picture.type(large)"]
    FBSDKGraphRequest(graphPath: "me", parameters: parameters).start { (connection, result, error) in

        let email = result["email"] as? String  //Type 'Any?' has no subscript members error occurs here.
    }
}

推荐答案

更改这个

 let email = result["email"] as? String

into

  guard let resultNew = result as? [String:Any] 

 let email = resultNew["email"]  as! String

完整答案

let parameters = ["fields": "email, first_name, last_name,  picture.type(large)"]
    FBSDKGraphRequest(graphPath: "me", parameters: parameters).start { (connection, result, error) in

        guard let resultNew = result as? [String:Any] 

       let email = resultNew["email"]  as! String
    }

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