在最近更新swift编译器更新之前,此代码工作正常。我已经纠正了所有明显的错误,但由于某些原因,当我运行应用程序时,它会在for in loop
尝试将[AnyObject]
投射到我的自定义Memory
类时崩溃。
日志和错误显示如下:
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).
所以我知道我正在从Parse中检索到8个正确的记忆,而且当前的记忆是正确的...它只是不会施放它。
代码:
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)")
}
}
}
答案 0 :(得分:21)
这个让我忙碌几个小时 - Parse-Documentation提到:
PFObject的强类型子类必须符合PFSubclassing协议,并且必须在调用[Parse setApplicationId:clientKey:]之前调用。“
通过在 AppDelegate 中调用 MyParseClass.registerSubclass(),我解决了我的问题!