下标成员的Facebook SDK错误

Question

我正在使用Facebook SDK登录并在我的终端获取数据但无法解决问题我面临与语法相关的挑战

func fetchProfile() {
    let parameters = ["fields": "email, first_name, last_name, picture.type(large)"]
    FBSDKGraphRequest(graphPath: "me", parameters: parameters).start(completionHandler: { (connection, user, requestError) -> Void in

        if requestError != nil {
            print(requestError)
            return
        }

        var email = user["email"] as? String
        let firstName = user["first_name"] as? String
        let lastName = user["last_name"] as? String

        self.nameLabel.text = "\(firstName!) \(lastName!)"

        var pictureUrl = ""

        if let picture = user["picture"] as? NSDictionary, let data = picture["data"] as? NSDictionary, let url = data["url"] as? String {
            pictureUrl = url
        }

    })
}

在行中var email = user["email"] as ? String我得到错误类型任何？没有成绩单.

Answer 1

试试这个:

if let dataDict = user as? [String:AnyObject] {
    var email     = dataDict["email"] as? String
    let firstName = dataDict["first_name"] as? String
    let lastName  = dataDict["last_name"] as? String

    //self.nameLabel.text = "\(firstName!) \(lastName!)"

    var pictureUrl = ""

    if let picture = dataDict["picture"] as? [String:AnyObject], let data = picture["data"] as? [String:AnyObject], let url = data["url"] as? String {
        pictureUrl = url
    }
}

您需要将user类型转换Any为类型字典[String:AnyObject],然后只有您可以使用下标从中提取值.