PFObject無法轉換為自定義子類

Question

在最近更新swift編譯器更新之前，此代碼工作正常。 我已經糾正了所有明顯的錯誤，但由於某種原因，當我運行應用程序時，它在for in loop崩潰時嘗試將[AnyObject]為我的自定義Memory類。

日志和錯誤顯示如下：

Has connectivity
Successfully retrieved 8 memories.
current memory: <Memories: 0x170120960, objectId: AO3EvPFob4, localId: (null)> {
ACL = "<PFACL: 0x174047e30>";
Date = "3915-04-08 05:00:00 +0000";
Guests = 4;
Title = test4;
}
Could not cast value of type 'PFObject' (0x100130bc0) to 'MemoryVault.Memory' (0x10012fa00).

所以我知道我正在從Parse中檢索到8個正確的記憶，而且當前的記憶是正確的......它只是不會施放它。

編碼：

    if (NetworkValidator.hasConnectivity()){ // Has internet connectivity
        println("Has connectivity")
        Memory.memoryQuery().findObjectsInBackgroundWithBlock{
            (objects: [AnyObject]?, error: NSError?) -> Void in
            if error == nil {
                // The find succeeded.
                 println("Successfully retrieved \(objects!.count) memories.")

                Memory.unpinAllInBackground(self.memories, block: {
                    (success: Bool, error: NSError?) -> Void in

                    // Clear current list
                    self.memories = [Memory]()

                    // Do something with the found objects
                    for memory in objects! {
                        println("current memory: \(memory)")
                        let currentMemory: Memory = memory as! Memory

                        // Save to localDataStore
                        currentMemory.pinInBackground()
                        println("\(currentMemory.memoryTitle) from Parse")

                        // Append to current
                        self.memories.append(currentMemory)
                    }
                })

                // Notify tableView to reload data
                self.memoriesTableView.reloadData()
            } else {

                // Log details of the failure
                println("Error: \(error!) \(error!.userInfo)")
            }

        }
    } 

Answer 1

這個讓我忙碌幾個小時 - Parse-Documentation提到：

PFObject的強類型子類必須符合PFSubclassing協議，並且必須在調用[Parse setApplicationId：clientKey：]之前調用。“

通過在AppDelegate中調用MyParseClass.registerSubclass（） ，我解決了我的問題！