3D Touchのショートカットメニューからビューをロードする

Question

私は自分のアプリケーションの3D Touchアプリケーションのショートカットを追加しましたが、それをタップすると「致命的なエラー：オプション値をアンラッピングしている間に予期せず見つからない」とクラッシュします。私はこのコードが別のアプリで働いているのとは何か、なぜわからないのですか？私が見ることのできる唯一の違いは、この新しいアプリがCore Dataを使用していることです。

private func selectTabBarItemForIdentifier(identifier: ShortcutIdentifier) -> Bool { 

    let storyboard = UIStoryboard(name: "Main", bundle: nil) 
    var vc = UIViewController() 

    switch (identifier) { 
    case .AddItem: 
     // load AddItem view directly 
     vc = storyboard.instantiateViewControllerWithIdentifier("AddItemController") as! AddItemController 
    } 
    window!.rootViewController?.presentViewController(vc, animated: true, completion: nil) 
    return true; 

} 

"ウィンドウ！"これは私の他のアプリでは問題ではありませんが、私はそれがここでの犯人であるとは信じていませんが、もちろんオプションです。繰り返しますが、私はCore Dataで何かを疑っていますが、この状況に特有のStackOverflowやその他の場所では何も見つけることができませんでした。

ロードするビューを変更しようとしましたが、まだそのnilエラーが発生しています。ここで

はCoreData関連のコードです：まあ

// MARK: - Core Data stack 

lazy var applicationDocumentsDirectory: NSURL = { 
    // The directory the application uses to store the Core Data store file. This code uses a directory named "com.group.TestApp" in the application's documents Application Support directory. 
    let urls = NSFileManager.defaultManager().URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask) 
    return urls[urls.count-1] 
}() 

lazy var managedObjectModel: NSManagedObjectModel = { 
    // The managed object model for the application. This property is not optional. It is a fatal error for the application not to be able to find and load its model. 
    let modelURL = NSBundle.mainBundle().URLForResource("TestApp", withExtension: "momd")! 
    return NSManagedObjectModel(contentsOfURL: modelURL)! 
}() 

lazy var persistentStoreCoordinator: NSPersistentStoreCoordinator = { 
    // The persistent store coordinator for the application. This implementation creates and returns a coordinator, having added 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. 
    // Create the coordinator and store 
    let coordinator = NSPersistentStoreCoordinator(managedObjectModel: self.managedObjectModel) 
    let url = self.applicationDocumentsDirectory.URLByAppendingPathComponent("SingleViewCoreData.sqlite") 
    var failureReason = "There was an error creating or loading the application's saved data." 
    do { 
     try coordinator.addPersistentStoreWithType(NSSQLiteStoreType, configuration: nil, URL: url, options: nil) 
    } catch { 
     // Report any error we got. 
     var dict = [String: AnyObject]() 
     dict[NSLocalizedDescriptionKey] = "Failed to initialize the application's saved data" 
     dict[NSLocalizedFailureReasonErrorKey] = failureReason 

     dict[NSUnderlyingErrorKey] = error as NSError 
     let wrappedError = NSError(domain: "YOUR_ERROR_DOMAIN", code: 9999, userInfo: dict) 
     // Replace this with code to handle the error appropriately. 
     // abort() 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. 
     NSLog("Unresolved error \(wrappedError), \(wrappedError.userInfo)") 
     abort() 
    } 

    return coordinator 
}() 

lazy var managedObjectContext: NSManagedObjectContext = { 
    // Returns the managed object context for the application (which is already bound to the persistent store coordinator for the application.) This property is optional since there are legitimate error conditions that could cause the creation of the context to fail. 
    let coordinator = self.persistentStoreCoordinator 
    var managedObjectContext = NSManagedObjectContext(concurrencyType: .MainQueueConcurrencyType) 
    managedObjectContext.persistentStoreCoordinator = coordinator 
    return managedObjectContext 
}() 

// MARK: - Core Data Saving support 

func saveContext() { 
    if managedObjectContext.hasChanges { 
     do { 
      try managedObjectContext.save() 
     } catch { 
      // Replace this implementation with code to handle the error appropriately. 
      // abort() 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 
      NSLog("Unresolved error \(nserror), \(nserror.userInfo)") 
      abort() 
     } 
    } 
} 

Answer 1

、オプションのラップを解除しようと

window!.rootViewController?.presentViewController(vc, animated: true, completion: nil) 

を置き換えることができます：とにかく

if let aWindow = window { 
    aWindow.rootViewController?.presentViewController(vc, animated: true, completion: nil) 
}