PFObject 值可能没有类:_SwiftValue [英] PFObject values may not have class: _SwiftValue

问题描述

我们正在试用 Parse server，我们之前从未使用过 Parse SDK.作为学习的一部分，我们尝试了 Facebook 使用 Parse 登录，效果很好.接下来我们想保存检索到的用户信息，但我们一直在保存个人资料图片.

We are trying out Parse server, and we have never used Parse SDK before. As part of learning we tried Facebook login with Parse, that worked good. Next we wanted to save the retrieved user information and we are stuck at saving the Profile picture.

代码

let pictureURL = "https://graph.facebook.com/\(facebookID)/picture?type=large&return_ssl_resources=1"
let imageData = NSData.init(contentsOf: NSURL(string: pictureURL) as! URL)
let picture = PFFile(data: imageData! as Data)
PFUser.current()?.setObject(picture, forKey: "profilePicture")
PFUser.current()?.saveInBackground()

它在 setObject 行上崩溃，日志如下:

And it crashes on the line setObject with the following log:

非常感谢您帮助解决此问题.谢谢！

Any help is much appreciated to get this issue resolved. Thanks!

推荐答案

当您将 Optional 对象传递给 Any 时会发生这种情况.

That happens when you pass Optional something to Any.

试试这个:

    if let picture = PFFile(data: imageData! as Data) {
        PFUser.current()?.setObject(picture, forKey: "profilePicture")
        PFUser.current()?.saveInBackground()
    }

或者简单的这个，如果你确定 picture 永远不会为零:

Or simply this, if you are sure that picture can never be nil:

    let picture = PFFile(data: imageData! as Data)
    PFUser.current()?.setObject(picture!, forKey: "profilePicture")
    PFUser.current()?.saveInBackground()

这篇关于PFObject 值可能没有类:_SwiftValue的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！