PFObject 子类出现 "Cannot convert value of type 'Match' to expected argument type '@noescape (AnyObject) throws -> Bool'" 错误

Question

在 PFObject 的子class 数组上调用 indexOf 时出现以下错误。

Cannot convert value of type 'Match' to expected argument type '@noescape (AnyObject) throws -> Bool'

我的class:

class Match: PFObject, PFSubclassing {XXXX}

发生错误的方法：

    func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject])
{
    //dismiss the image picker
    self.dismissViewControllerAnimated(true) { () -> Void in
        //wait for the dismissal in case there is an error to show
        let recordedVideofileURL = info[UIImagePickerControllerMediaURL] as? NSURL

        if let recordedVideofileURL = recordedVideofileURL
        {
            //upload the file to S3
            do
            {
                let uploadRequest = try S3UploadManager.uploadFile(self.match!.localPathToVideo()!)

                self.match!.saveEventually({ (success: Bool, error: NSError?) -> Void in
                    if (success)
                    {
                        // The object has been saved.
                        self.matchesController.loadObjects()

                        //set up progress tracking for the upload
                        uploadRequest.uploadProgress = {[weak self](bytesSent:Int64, totalBytesSent:Int64, totalBytesExpectedToSend:Int64) -> Void  in
                            if let match = self?.match
                            {
      >>>>>>error here           var index = self?.matchesController.objects?.indexOf(match)
                            }
                        }
                    }

                })
            }
            catch
            {
                // TODO: handle error
            }
        }
    }
}

据我所知，当数组中包含的对象不符合 Equatable 扩展时，就会发生此错误。但是 PFObject 继承自符合该扩展的 NSObject。所以我很茫然...

感谢任何指点

Answer 1

找到解决方案。结果是 PFQueryTableViewController returns [AnyObject] 上的对象方法，所以我需要将它转换为 [Match]

let objects = self?.matchesController.objects as! [PFObject]

然后就可以了...

我在 swift 和 Parse 方面还是新手，但这对于 return [AnyObject] 的对象方法来说似乎是错误的？特别是考虑到文档中的评论

/*!
 @abstract The array of instances of <PFObject> that is used as a data source.
 */
public var objects: [AnyObject]? { get }

PFObject 子类出现 "Cannot convert value of type 'Match' to expected argument type '@noescape (AnyObject) throws -> Bool'" 错误

PFObject subclass gets "Cannot convert value of type 'Match' to expected argument type '@noescape (AnyObject) throws -> Bool'" error

parse-platform

swift

pfobject