nsnotifications

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NSManagedObjectContextObjectsDidChangeNotification not always called instantly

I have an Mac Application using a NSPersistentDocument. I want to get notified when Objects are deleted to save this information using Core Data. So I\'m listening for NSManagedObjectContextObjectsDid[详细]

2023-04-12 07:39 分类：问答
Is there a notification on iOS if a UIAlertView is shown?

Wondering if there is a notification available if a UIAlertView pops up? Background: my app asks the user for a PIN after a period of inactivity but I would like to prevent it if an alert is on screen[详细]

2023-04-11 07:09 分类：问答
How do I post a NSNotification when using Grand Central Dispatch?

I found that as predicted when I was writing an image to file that my UI was blocked for the duration, which was not acceptable.When I write the image to file I then post an NS Notification so that I[详细]

2023-04-11 06:39 分类：问答
Cocoa NSNotificationCenter communication between apps failed

I need to communicate between two different console apps, Observer and Client. In the Observer app I added this code:[详细]

2023-04-09 11:33 分类：问答
ways to bind model classes in Objective-C

(I hope someone will correct my terminology if I get it wrong -- I\'m still sorting out terms) I have a series of classes in my model. I need to get some data from a url (SatDataGetter) and combine i[详细]

2023-04-09 01:11 分类：问答
Multiple objects subscribing to an NSNotification (Objective-c)

I have an Obje开发者_开发技巧ctive-c class MyClass that subscribes to MyNSNotification.There are multiple instances of MyClass in my application.Hence multiple objects receive the notification.Is ther[详细]

2023-04-07 11:19 分类：问答
Specifically detailing what defaults have changed on NSUserDefaultsDidChangeNotification

I\'m starting to get into the inner sanctum of NSUserDefaults to the point where I can now successfully intercept an NSUserDefaultsDidChangeNotification notification using a supplied selector plus NSN[详细]

2023-04-04 05:38 分类：问答
Event on view displayed change (Youtube MPMoviePlayerViewController)

I would like to kn开发者_如何学Cow when the YouTube MPMoviePlayerViewController appear (programmatically) after have clicked on the UIWebView which permit to play the video in iOS, to get and to have[详细]

2023-04-02 17:21 分类：问答
Does NSFetchedResultsController Observe All Changes to Persistent Store?

My program does work like link below: Update results of NSFetchedResultsController without a new fetch[详细]

2023-04-01 06:39 分类：问答
Core Data: Observing new Entity of certain type

I would like to be notified whenever an entity of a certain type is added (and maybe changed/removed).[详细]

2023-04-01 04:53 分类：问答