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Retrieve images asynchronously using UISlider in iPhone

How do I retrieve images asynchronously and put it on UIImageViewin iPhone programming ? Till now I was doing it synchronously, but the delay in retrieving the images is mor开发者_开发技巧e, hence I w[详细]

2023-02-11 15:01 分类：问答
Detecting leaks in Cocoa thread?

I have been wo开发者_C百科rking on an application in Xcode for a while now and had previously detected a lot of memory leaks using Instruments. Fast forward a few months and I have added threading to[详细]

2023-02-11 13:28 分类：问答
Is it possible to use NSThreads for parsing four different URLs using NSXMLParser

If I try to parse single HTTP URL, it will be done quic开发者_如何学编程kly. But if I have to parse four different URLs at application launch, is it feasible to use NSThreads and NSOperation queue.[详细]

2023-02-11 07:12 分类：问答
Is it possible to use a timer to kill rogue method in background thread?

I have a piece of code that calls a method (i.e. processRege开发者_如何学JAVAx) which is from a 3rd party library, regexKitLite, that runs a regex match on a bunch of data. I am running this method in[详细]

2023-02-10 16:40 分类：问答
Speed up NSThread message passing

I\'m running 2d animations at 12fps in separate threads(2 to 5). Each thread display image at the specified time at specified location by \"performSelector:withObject:afterDelay\"[详细]

2023-02-09 12:40 分类：问答
NSTimer never starts

I\'m just trying to close an NSPanel after a couple second delay, but I can\'t get my NSTimer to start. It will fire if I explicitly call the fire method on it, but it will never go by itself. Here\'s[详细]

2023-02-08 15:28 分类：问答
How to implement NSThread to constantly perform the function in background in iPhone SDK

In my iPhone app, I have to perform function constantly in background. For that I think I will have to use NSThread to call the function and keep it executing in background.[详细]

2023-02-08 07:34 分类：问答
Call delegate method from a thread

I\'ve this bit of code: - (IBAction)registerAction:(id)sender { [NSThread detachNewThreadSelector:@selector(registerThread) toTarget:self withObject:nil];[详细]

2023-02-07 14:34 分类：问答
NSTimer memory manage question

By default an object returnd by method alloc or copy has retain count equals to 1, so you have to release it by yourself.[详细]

2023-02-07 09:32 分类：问答
setKeepAliveTimeout and BackgroundTasks

I\'ve a big headache with the topic. I\'m working on an application that needs to poll a webserver regularly, in order to check for new data. Based on the returned information, I wish to push a local[详细]

2023-02-06 20:56 分类：问答