Swift 3 - 'Any?' 类型的值没有成员“valueForKey”

Posted 2023-03-11

【中文标题】Swift 3 - \'Any?\' 类型的值没有成员“valueForKey”

【英文标题】：Swift 3 - Value of type 'Any?' has no member 'valueForKey'Swift 3 - 'Any?' 类型的值没有成员“valueForKey”

【发布时间】：2016-09-14 12:24:02

【问题描述】：

您好，我已更新到 swift 3 并收到错误消息：

“任何？”类型的值没有成员“valueForKey”

以下代码行：

let userName : NSString? = result.valueForKey("name") as? NSString
let facebookID : NSString? = result.valueForKey("id") as? NSString
let firstName : NSString? = result.valueForKey("first_name") as? NSString
let lastName : NSString? = result.valueForKey("last_name") as? NSString
let email : NSString? = result.valueForKey("email") as? NSString

这些错误的解释是什么？我将如何修复它？

非常感谢！

编辑：

完整代码：

  if((FBSDKAccessToken.current()) != nil)
            FBSDKGraphRequest(graphpath: "me", parameters: ["fields": "id, name, first_name, last_name, email"]).start(completionHandler:  (connection, result, error) -> Void in
                if (error == nil)
                    
                    
                    let userName : NSString? = result.valueForKey("name") as? NSString
                    let facebookID : NSString? = result.valueForKey("id") as? NSString
                    let firstName : NSString? = result.valueForKey("first_name") as? NSString
                    let lastName : NSString? = result.valueForKey("last_name") as? NSString
                    let email : NSString? = result.valueForKey("email") as? NSString
                    

回答：

  FBSDKGraphRequest(graphPath: "me", parameters: ["fields": "id, name, first_name, last_name, email"]).start(completionHandler:  (connection,  result, error) -> Void in
                if (error == nil)
                    
                    let data:[String:AnyObject] = result as! [String : AnyObject]
                    
                    
                    let userName : NSString? = data["name"]! as? NSString
                    let facebookID : NSString? = data["id"]! as? NSString
                    let firstName : NSString? = data["first_name"]! as? NSString
                    let lastName : NSString? = data["last_name"]! as? NSString
                    let email : NSString? = data["email"]! as? NSString

【问题讨论】：

您能否告诉我们，您如何定义result 以及它是什么类型？

您可能会将result 转换为比未指定的Any 更有意义的东西

Since id now imports as Any rather than AnyObject, you may see errors where you were previously performing dynamic lookup on AnyObject. in here ctrl+f -> any

谢谢！编辑后的帖子有答案！

【参考方案1】：

虽然您找到了答案，但最好使用纯 swift 方法而不是使用 NSString 并且最好不要强制打开选项

FBSDKGraphRequest(graphPath: "me", parameters: ["fields": "id, name, first_name, last_name, email"]).start(completionHandler:  (connection,  result, error) -> Void in
            if (error == nil)
                  guard let data = result as? [String:Any] else  return 

                  let fbid = data["id"] 
                  let username = data["name"]  
                  let firstName = data["first_name"]