nsnotification

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NSNotifications name best practice

In trying to de-couple my model from the view controllers that display fetched data, when an asynchronous fetch completes, I post an NSNotification.[详细]

2023-02-27 05:16 分类：问答
Singleton & Notification

I have been developing Cocoa Apps for a while and I have a conceptual question regarding the Singleton \"pattern\" and the use of the NSNotificationCenter for communication.[详细]

2023-02-24 11:48 分类：问答
Jailbroken iOS: NSTaskDidTerminateNotification fails to launch selector

I seem to have the same problem as here: NSTask waitUntilExit hanging app on jailbroken iOS Here\'s what I\'ve got via NSNotification (like above), yet the taskEnded: alert(s) aren\'t coming up. The[详细]

2023-02-19 05:01 分类：问答
Does the NSNotification retain the object?

My question is in regards the object that gets added to a -postNotificationName:object: userInfo: method.[详细]

2023-02-17 18:20 分类：问答
When responding to NSNotifications, what is the best practice for updating UIViews

Since the NSNotification invokes its selector on a thread other than the main thread, I notice that any changes that you make to UIViews or other interface elements in response to that notification ar[详细]

2023-02-16 08:54 分类：问答
Can't make "user switch notifications work" via notificationCenter

I am trying to use NSWorkspaceSessionDidBecomeActiveNotification to detect fast user switching but it doesn\'t seems to fire my handler.[详细]

2023-02-15 23:37 分类：问答
How to trigger a delegate method after a certain period of time?

I\'m using a class which downloads a file asynchronously .. works a bit like this // in AViewController.m[详细]

2023-01-30 13:06 分类：问答
MPMoviePlayer No Longer Seeks Forward and instead gives warning

So it appears as though my MPMoviePlayer no longer wants to seek forward, despite it being the case that seeking is done internally by the MoviePlayer, so all I should be doing is setting up notificat[详细]

2023-01-07 18:32 分类：问答
NSNotifications only being sent within the same object

Hey there, so I\'ve got an NSObject subclass sending out a message via开发者_运维百科 the notification center,and I\'m sending out my notifications out to the object nil but the only object that can r[详细]

2023-01-07 07:03 分类：问答
addobserver / removeobserver query

Is it OK to use -removeObserver: first and then call -addObserver: with the same name? Or is it a rule to have -addObserver: first before -removeObserver:?[详细]

2023-01-06 10:44 分类：问答