2014/10/15 下午 10:12:32

iphone Programming Glossary: performselectorinbackground

Common multithreading mistakes beginners make on iPhone

http://stackoverflow.com/questions/1357108/common-multithreading-mistakes-beginners-make-on-iphone

to controller EndViewController alloc initWithNibName @ EndViewController bundle nil controller.delegate self self performSelectorInBackground @selector threadWork withObject nil THE THREAD WORK IBAction threadWork id sender NSAutoreleasePool pool NSString status..

iPhone-SDK:Call a function in the background?

http://stackoverflow.com/questions/1421817/iphone-sdkcall-a-function-in-the-background

If your stuff here takes a long time and you can not hold up the main thread then either call your stuff using self performSelectorInBackground @selector myStuff withObject nil Or you could run the NSTimer on a background thread by with something like this I am intentionally..

Asynchronous request to the server from background thread

http://stackoverflow.com/questions/1728631/asynchronous-request-to-the-server-from-background-thread

@end Then I call this from main thread asyncImgRequest AsyncImgRequest alloc init asyncImgRequest.delegate self self performSelectorInBackground @selector downloadImage withObject nil method downloadImage is listed below void downloadImage NSAutoreleasePool pool NSAutoreleasePool.. connection NSURLConnection connection didReceiveResponse NSURLResponse response are called. However if I replace self performSelectorInBackground @selector downloadImage withObject nil by self performSelector @selector downloadImage withObject nil everything is working..

IPhone SDK - Leaking Memory with performSelectorInBackground

http://stackoverflow.com/questions/2441856/iphone-sdk-leaking-memory-with-performselectorinbackground

SDK Leaking Memory with performSelectorInBackground Maybe someone can help me with this strange thing If a user clicks on a button a new UITableView is pushed to the navigation.. WorkController tmp WorkController alloc initWithStyle UITableViewStyleGrouped self.workController tmp tmp release self performSelectorInBackground @selector getController withObject nil void getController self.workController loadList Does the DB Query self.navigationController..

iPhone: how to use performSelector:onThread:withObject:waitUntilDone: method?

http://stackoverflow.com/questions/2584394/iphone-how-to-use-performselectoronthreadwithobjectwaituntildone-method

I don't need this multithreading for separating costly operations to another thread. In this case I could use the performSelectorInBackground as mentioned in few answers. The main reason for this separate thread is the need to perform all the actions in the API..

NSThread vs. NSOperationQueue vs. ??? on the iPhone

http://stackoverflow.com/questions/3041837/nsthread-vs-nsoperationqueue-vs-on-the-iphone

another thread. NSThread detachNewThreadSelector @selector cacheImage toTarget self withObject image Alternately self performSelectorInBackground @selector cacheImage withObject image Alternately I can use an NSOperationQueue NSInvocationOperation invOperation NSInvocationOperation..

Does UIActivityIndicator require manual threading on iPhone

http://stackoverflow.com/questions/441345/does-uiactivityindicator-require-manual-threading-on-iphone

user 'eskimo1' IBAction syncOnThreadAction id sender self willStartJob id myObject MyObjectClass createNewObject self performSelectorInBackground @selector inThreadStartDoJob withObject myObject void inThreadStartDoJob id theJobToDo NSAutoreleasePool pool NSString status..

Is there a way to make drawRect work right NOW?

http://stackoverflow.com/questions/4739748/is-there-a-way-to-make-drawrect-work-right-now

threading you can use NSThread detachNewThreadSelector @selector doWork toTarget self withObject nil or self performSelectorInBackground @selector doWork withObject nil and then to update the UI you can use self performSelectorOnMainThread @selector updateProgress..

How to make ui responsive all the time and do background updating?

http://stackoverflow.com/questions/5133731/how-to-make-ui-responsive-all-the-time-and-do-background-updating

Central Dispatch is easy to use for background loading. But GCD is only for after iOS4. If you have to support iOS3 performSelectorInBackground performSelectorOnMainThread or NSOperationQueue are helpful. And be careful almost UIKit classes are not thread safe except..

long polling in objective-C

http://stackoverflow.com/questions/6300756/long-polling-in-objective-c

dataReceived withObject responseData waitUntilDone YES clear the pool pool drain send the next poll request self performSelectorInBackground @selector longPoll withObject nil void startPoll not covered in this example stopping the poll or ensuring that only 1 poll.. startPoll not covered in this example stopping the poll or ensuring that only 1 poll is active at any given time self performSelectorInBackground @selector longPoll withObject nil void dataReceived NSData theData process the response here Alternately you could use async..

GCD, Threads, Program Flow and UI Updating

http://stackoverflow.com/questions/7290931/gcd-threads-program-flow-and-ui-updating

as a Background thread but I can't get the code to waitTilDone before continuing and changing the button state. self performSelectorInBackground @selector createTreeFromNode withObject rootNode I've tried to use GCD but similar issue and can't get UI updated. dispatch_queue_t.. stringWithFormat @ d maxMoves iphone objective c ios multithreading osx share improve this question GCD and performSelectorInBackground samples below. But first let's look at your code. You cannot wait where you want to in the code above. Here's the code you.. as a Background thread but I can't get the code to waitTilDone before continuing and changing the button state. self performSelectorInBackground @selector createTreeFromNode withObject rootNode NO do not wait or enable here. Need to wait here until createTreeFromNode..

how to send Asynchronous URL Request?

http://stackoverflow.com/questions/8515667/how-to-send-asynchronous-url-request

it in a another thread instead of the main thread EDIT ANSWER I end upcalling my function with this it works well self performSelectorInBackground @selector shouldCheckForUpdate withObject nil iphone ios xcode nsurlconnection nsurlrequest share improve this question..

Memory management and performSelectorInBackground:

http://stackoverflow.com/questions/873200/memory-management-and-performselectorinbackground

management and performSelectorInBackground Which is right This NSArray foo NSArray alloc initWithObjects @ a @ b nil bar performSelectorInBackground @selector baz.. and performSelectorInBackground Which is right This NSArray foo NSArray alloc initWithObjects @ a @ b nil bar performSelectorInBackground @selector baz withObject foo void baz NSArray foo ... foo release Or NSArray foo NSArray alloc initWithObjects @ a @ b nil.. foo void baz NSArray foo ... foo release Or NSArray foo NSArray alloc initWithObjects @ a @ b nil autorelease bar performSelectorInBackground @selector baz withObject foo void baz NSArray foo NSAutoreleasePool pool NSAutoreleasePool alloc init ... pool release I..