ios - 使用 Swift4 JSONDecoder 解析 IOS FBSDKGraphRequest 结果

Question

FBSDKGraphRequest的结果属于 any 类型，可以转换为 NSDictionary ，但是如何将其转换为Data对象能够使用这个 SWIFT4特点

let jsonDecoder = JSONDecoder.init()
let fbModel = try? jsonDecoder.decode(FBModel.self, from: dataFromResult)

我正在尝试这个，但结果是零作为代码注释

    FBSDKGraphRequest.init(graphPath: "me", parameters: ["fields":"email,name,id"]).start{ (connection, results, error) -> Void in
           let dataFromResult = NSKeyedArchiver.archivedData(withRootObject: results)
           let stringFromData = String.init(data: dataFromResult, encoding: String.Encoding.utf8)//return nil
           let jsonDecoder = JSONDecoder.init()
           let fbModel = try? jsonDecoder.decode(FBModel.self, from: dataFromResult)//fbModel nil
}

Answer 1

它对我有用，但我不确定这是否是最佳解决方案

let resDataFromDic = try? JSONSerialization.data(withJSONObject: resDict, options: JSONSerialization.WritingOptions.prettyPrinted)