如何使用 Parse findObjectsInBackground 获取 objectID

Question

我成功地从 Parse 服务器保存/检索图像，但是当我尝试获取 objectID 时，我的代码崩溃了。我应该如何获取 objectId 以供将来参考，例如删除对象？

let query = PFQuery(className: "Images")

    query.findObjectsInBackground {
        (objects:[PFObject]?, error: Error?) -> Void in

        if error == nil && (objects != nil) {
            for object in objects! {

                let imageFile = object["imageFileObject"] as! PFFileObject
                let imageWidth = object["imageWidth"] as! CGFloat
                let imageName = object["imageName"] as! String
                let imageId = object["objectId"] as! String  // CRASHES ON THIS LINE
            }

Answer 1

您可以像这样检索 objectId：

let imageId = object.objectId

如何使用 Parse findObjectsInBackground 获取 objectID

How to use Parse findObjectsInBackground to get objectID

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