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我有一個使用Xcode 8 GM種子在Swift 3中構建的應用程序。該應用程序有一個鍵盤擴展。我爲sqlite數據庫位置使用共享組目錄，並且使用框架完成數據庫訪問。直到我嘗試從鍵盤調用SaveContext（）時，情況才起作用。我收到標題錯誤代碼= 134030中提到的錯誤。該消息顯示「保存時發生錯誤」，並且沒有其他信息。沒有userInfo讓我知道潛在的錯誤。核心數據錯誤代碼= 134030「保存時發生錯誤」，沒有用戶信息
我已經拋出了一些調試信息，以確保我正在查看與要更新的相同項目的相同實例。這是一個非常簡單的更新，只是在使用某些東西時增加使用計數器。從鍵盤擴展中保存有問題嗎？它們是否以只讀模式打開？
這裏的CoreDataStack大頭：
let coreDataStack = CoreDataStack()
public class CoreDataStack {
public func saveContext()
{
let context = persistentContainer.viewContext
if context.hasChanges {
do {
try context.save()
} catch let error {
// Replace this implementation with code to handle the error appropriately.
// fatalError() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.
let nserror = error as NSError
fatalError("Unresolved error \(nserror), \(nserror.userInfo)")
}
}
}
// MARK: - Private
lazy var managedObjectContext: NSManagedObjectContext = {
return self.persistentContainer.viewContext
}()
lazy var persistentContainer: NSPersistentContainer = {
/*
The persistent container for the application. This implementation
creates and returns a container, having loaded the store for the
application to it. This property is optional since there are legitimate
error conditions that could cause the creation of the store to fail.
*/
let modelUrl = Bundle(identifier: "com.myapp.AppDataKit")?.url(forResource: "MyApp-SE", withExtension: "momd")
let managedObjectModel = NSManagedObjectModel(contentsOf: modelUrl!)!
let container = NSPersistentContainer(name: "MyApp-SE", managedObjectModel: managedObjectModel)
container.persistentStoreDescriptions = [NSPersistentStoreDescription(url: try! FileManager.default.containerURL(forSecurityApplicationGroupIdentifier: "group.com.myapp")!.appendingPathComponent("MyAppSEData.sqlite"))]
container.loadPersistentStores(completionHandler: { (storeDescription, error) in
if let error = error as NSError? {
// Replace this implementation with code to handle the error appropriately.
// fatalError() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.
/*
Typical reasons for an error here include:
* The parent directory does not exist, cannot be created, or disallows writing.
* The persistent store is not accessible, due to permissions or data protection when the device is locked.
* The device is out of space.
* The store could not be migrated to the current model version.
Check the error message to determine what the actual problem was.
*/
fatalError("Unresolved error \(error), \(error.userInfo)")
}
})
return container
}()
} // class CoreDataStack
在我檢查錯誤漁獲物和我無法擺脫它的任何詳細信息。在將它轉換爲NSError之後，它仍然沒有幫助，因爲userInfo是一個空字典。 我還沒有實現錯誤處理，但我可以看到鍵盤上的項目，所以沒有檢索問題。只有在保存時纔會崩潰。 那裏我試圖更新的地方是可笑的簡單：
item.useCount = NSNumber(value: item.useCount.intValue + 1)
Logger.add(item.debugDescription)
AppData.SaveContext()
AppData的是靜態函數的類來訪問核心數據
public class AppData {
public static func SaveContext() {
coreDataStack.saveContext()
}
...
}
我看着設備日誌，並沒有得到那裏有更好的信息。我可以看到我的數據包的兩條線，然後兩名來自libswiftCore.dylib
0 libswiftCore.dylib 0x0000000100ab2848 0x100a80000 + 206920
1 libswiftCore.dylib 0x0000000100ab2848 0x100a80000 + 206920
任何人都知道如何在Xcode8 symbolicate libswiftcore？
謝謝， 邁克