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2014/10/15 ¤U¤È 10:13:34
iphone Programming Glossary: runloopKeep iPhone UIButton Highlighted http://stackoverflow.com/questions/2290534/keep-iphone-uibutton-highlighted pressed iphone uibutton share improve this question The solution is to do button setHighlighted YES in the next runloop void highlightButton UIButton b b setHighlighted YES IBAction onTouchup UIButton sender self performSelector @selector highlightButton..
When is an autoreleased object actually released? http://stackoverflow.com/questions/2498330/when-is-an-autoreleased-object-actually-released objects using correct Cocoa conventions for retain release autorelease copy. To answer your question about what the runloop is in your application's main function it invokes UIApplicationMain . You can imagine UIApplicationMain looks something.. loops is similar to what the UIKit is actually doing and each trip through that while loop is like a trip through the runloop where the function getNextEvent blocks waiting for some event to happen. All of your methods are typically called from within.. looking in the debugger call stack way up at the top to see the names of the UIKit methods that handle the events and runloop. Since each of your methods are called from within that while loop each time you call autorelease on an object that object..
NSURLConnection still calls delegate AFTER cancel method has been called http://stackoverflow.com/questions/2503652/nsurlconnection-still-calls-delegate-after-cancel-method-has-been-called still gets called which crashes the app . Googling around it looks like the problem here is a race condition in the runloop I cancel the connection and release the delegate but before the runloop cycles it calls the delegate functions crash. Is.. the problem here is a race condition in the runloop I cancel the connection and release the delegate but before the runloop cycles it calls the delegate functions crash. Is there a way for me to after I call connection cancel confirm the connection..
iPhone: how to use performSelector:onThread:withObject:waitUntilDone: method? http://stackoverflow.com/questions/2584394/iphone-how-to-use-performselectoronthreadwithobjectwaituntildone-method is a need in additional piece of code void threadMain id data NSAutoreleasePool pool NSAutoreleasePool new NSRunLoop runloop NSRunLoop currentRunLoop runloop addPort NSMachPort port forMode NSDefaultRunLoopMode while isAlive 'isAlive' is a variable.. code void threadMain id data NSAutoreleasePool pool NSAutoreleasePool new NSRunLoop runloop NSRunLoop currentRunLoop runloop addPort NSMachPort port forMode NSDefaultRunLoopMode while isAlive 'isAlive' is a variable that is used to control the thread.. forMode NSDefaultRunLoopMode while isAlive 'isAlive' is a variable that is used to control the thread existence... runloop runMode NSDefaultRunLoopMode beforeDate NSDate distantFuture pool release And the next line NSThread myThreadTemp NSThread..
How to download files directly to disk on the iPhone os? http://stackoverflow.com/questions/2868549/how-to-download-files-directly-to-disk-on-the-iphone-os is that you create a standard NSURLConnection which is normally asynchronous but just block the thread by spinning the runloop yourself until the connection is done. You also use a custom url connection delegate to just pipe any data the connection..
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 each presented astounding solutions in the other specific question hope it helps. iphone ios cocoa quartz graphics runloop share improve this question Updates to the user interface happen at the end of the current pass through the run loop...
Animation in OpenGL ES view freezes when UIScrollView is dragged on iPhone http://stackoverflow.com/questions/4876488/animation-in-opengl-es-view-freezes-when-uiscrollview-is-dragged-on-iphone UITrackingRunLoopMode for 'tracking in controls' which includes when a scrollview is scrolling. So at that point the runloop is switched out of the default mode and hence your display link and also any timers NSURLConnections etc added in the default..
Repeating NSTimer, weak reference, owning reference or iVar? http://stackoverflow.com/questions/4945028/repeating-nstimer-weak-reference-owning-reference-or-ivar 1 target self selector @selector updateDisplay userInfo nil repeats YES I understand that when created the runloop takes ownership of the NSTimer and ultimately stops removes and releases the NSTimer when ti invalidate is called. By virtue.. when you're done with it and simply release it you'll end up with where you leak the object and the timer because the runloop keeps the timer alive which in turn keeps an owning reference to your object. This can be avoided if yourObject is only..
NSTimer on background IS working http://stackoverflow.com/questions/5187741/nstimer-on-background-is-working it iphone cocoa touch background nstimer share improve this question NSTimer is going to fire whenever the main runloop is running. Apple makes no promises that I know of to unschedule timers or to prevent the main runloop from running. It's.. the main runloop is running. Apple makes no promises that I know of to unschedule timers or to prevent the main runloop from running. It's your responsibility to unschedule your timers and release resources when you move to the background...
How to Maintain VOIP socket connection in background? http://stackoverflow.com/questions/5987495/how-to-maintain-voip-socket-connection-in-background ht In my case the signaling protocol is working in a separate thread so I am spinning the runLoop my self Start runloop while m_needStop CFRunLoopRun And stopping it when needed m_needStop true QAutoLock l m_runLoopGuard if m_runLoop NULL CFRunLoopStop..
How to detect that animation has ended on UITableView beginUpdates/endUpdates? http://stackoverflow.com/questions/7623771/how-to-detect-that-animation-has-ended-on-uitableview-beginupdates-endupdates
How do I install this script into PhoneGap for iOS http://stackoverflow.com/questions/8718411/how-do-i-install-this-script-into-phonegap-for-ios removeFromSuperview void keyboardWillShow NSNotification notification remove the bar in the next runloop not actually created at this point self performSelector @selector removeBar withObject nil afterDelay 0 @end As a word of..
what is the first step in (NSTimer release and invalidate)? http://stackoverflow.com/questions/1171393/what-is-the-first-step-in-nstimer-release-and-invalidate mean If you alloc and init a timer you must also release it like so NSTimer timer NSTimer alloc initWith... NSRunLoop runLoop NSRunLoop currentRunLoop runLoop addTimer timer forMode NSDefaultRunLoopMode timer release ... ... timer invalidate timer.. you must also release it like so NSTimer timer NSTimer alloc initWith... NSRunLoop runLoop NSRunLoop currentRunLoop runLoop addTimer timer forMode NSDefaultRunLoopMode timer release ... ... timer invalidate timer nil Once the timer has been added..
?examine a response while webView:shouldStartLoadWithRequest:naviagiontType… waits? http://stackoverflow.com/questions/1176936/examine-a-response-while-webviewshouldstartloadwithrequestnaviagionttype-w the app might get killed because it will stop responding to events for too long. The other option is to run your runLoop inside of the webView shouldStartLoadWithRequest navigationType BOOL webView UIWebView webView shouldStartLoadWithRequest..
iPhone-SDK:Call a function in the background? http://stackoverflow.com/questions/1421817/iphone-sdkcall-a-function-in-the-background timerWithTimeInterval 10 60 target self selector @selector triggerTimer userInfo nil repeats YES NSRunLoop runLoop NSRunLoop currentRunLoop runLoop addTimer timer forModes NSRunLoopCommonModes runLoop run pool release void triggerTimer.. target self selector @selector triggerTimer userInfo nil repeats YES NSRunLoop runLoop NSRunLoop currentRunLoop runLoop addTimer timer forModes NSRunLoopCommonModes runLoop run pool release void triggerTimer NSTimer timer Do your stuff share..
Running NSTimer Within an NSThread? http://stackoverflow.com/questions/2083737/running-nstimer-within-an-nsthread the thread starts by sending this message void startTimerThread timerNSPool NSAutoreleasePool alloc init NSRunLoop runLoop NSRunLoop currentRunLoop timer NSTimer scheduledTimerWithTimeInterval 1.0 target self selector @selector startTime userInfo.. @selector startTime userInfo nil repeats YES NSRunLoop currentRunLoop addTimer timer forMode NSRunLoopCommonModes runLoop run timerNSPool release void startTime NSTimer theTimer if timeDuration 1 timeLabel.text NSString stringWithFormat @ d timeDuration.. release timeLabel release timer invalidate timer nil I never had a problem running the NSTimer on the main thread runLoop with application autoreleasepool. I am getting leak at timerNSPool release GeneralBlock 16 Malloc WebCore WKSetCurrentGraphicsContext..
Repeating NSTimer, weak reference, owning reference or iVar? http://stackoverflow.com/questions/4945028/repeating-nstimer-weak-reference-owning-reference-or-ivar self walkTimer invalidate self setWalkTimer nil ... ... dealloc method super dealloc . 3 Use an iVar and rely on the runLoop holding i.e. retaining the timer NSTimer walkTimer NSTimer walkTimer NSTimer scheduledTimerWithTimeInterval 1 target..
getting the object passed to the NSThread selector http://stackoverflow.com/questions/5310328/getting-the-object-passed-to-the-nsthread-selector the value passed to this selector void startTimerThread NSAutoreleasePool pool NSAutoreleasePool alloc init NSRunLoop runLoop NSRunLoop currentRunLoop NSTimer scheduledTimerWithTimeInterval 0.1 target self selector @selector timerTick userInfo.. 0.1 target self selector @selector timerTick userInfo thenumberhere repeats YES retain runLoop run pool release void timerTick NSTimer timer code iphone cocoa ios4 nsthread share improve this question You're specifying..
keyboard in UIActionSheet does not type anything http://stackoverflow.com/questions/5589482/keyboard-in-uiactionsheet-does-not-type-anything text @end @implementation ModalActionDelegate @synthesize index @synthesize text id initWithRunLoop CFRunLoopRef runLoop if self super init currentLoop runLoop return self Activate keyboard void acceptInput UIActionSheet actionSheet UITextField.. @synthesize index @synthesize text id initWithRunLoop CFRunLoopRef runLoop if self super init currentLoop runLoop return self Activate keyboard void acceptInput UIActionSheet actionSheet UITextField textField UITextField actionSheet viewWithTag..
http://stackoverflow.com/questions/5862743/pausing-an-nstimer start the thread end viewDidLoad void startTimerThread NSAutoreleasePool pool NSAutoreleasePool alloc init NSRunLoop runLoop NSRunLoop currentRunLoop NSTimer scheduledTimerWithTimeInterval 3.0 target self selector @selector loadNextPhoto userInfo.. 3.0 target self selector @selector loadNextPhoto userInfo nil repeats YES retain runLoop run pool release iphone nstimer nsthread share improve this question Keep a reference to the timer you create so you..
How to Maintain VOIP socket connection in background? http://stackoverflow.com/questions/5987495/how-to-maintain-voip-socket-connection-in-background the background. Your application will receive the CPU time as soon there is a data available in the socket. So in the runLoop I am checking ht In my case the signaling protocol is working in a separate thread so I am spinning the runLoop my self.. in the runLoop I am checking ht In my case the signaling protocol is working in a separate thread so I am spinning the runLoop my self Start runloop while m_needStop CFRunLoopRun And stopping it when needed m_needStop true QAutoLock l m_runLoopGuard.. runLoop my self Start runloop while m_needStop CFRunLoopRun And stopping it when needed m_needStop true QAutoLock l m_runLoopGuard if m_runLoop NULL CFRunLoopStop m_runLoop For the sockets in runLoop I have setup the handler functions before scheduling..
Asynchronous request to the server from background thread http://stackoverflow.com/questions/1728631/asynchronous-request-to-the-server-from-background-thread exiting with void downloadImage NSAutoreleasePool pool NSAutoreleasePool alloc init self downloadImage urlString CFRunLoopRun Avoid thread exiting pool release However this means the thread will never exit. So you need to stop it when you're done... will never exit. So you need to stop it when you're done. void connectionDidFinishLoading NSURLConnection connection CFRunLoopStop CFRunLoopGetCurrent void connection NSURLConnection connection didFailWithError NSError error CFRunLoopStop CFRunLoopGetCurrent.. So you need to stop it when you're done. void connectionDidFinishLoading NSURLConnection connection CFRunLoopStop CFRunLoopGetCurrent void connection NSURLConnection connection didFailWithError NSError error CFRunLoopStop CFRunLoopGetCurrent Learn..
http://stackoverflow.com/questions/5003120/strange-iphone-crash-log 0x31093268 mach_msg_trap 20 1 libSystem.B.dylib 0x31095354 mach_msg 44 2 CoreFoundation 0x30416648 __CFRunLoopServiceMachPort 88 3 CoreFoundation 0x30415ed2 __CFRunLoopRun 350 4 CoreFoundation 0x30415c80 CFRunLoopRunSpecific 224.. 0x31095354 mach_msg 44 2 CoreFoundation 0x30416648 __CFRunLoopServiceMachPort 88 3 CoreFoundation 0x30415ed2 __CFRunLoopRun 350 4 CoreFoundation 0x30415c80 CFRunLoopRunSpecific 224 5 CoreFoundation 0x30415b88 CFRunLoopRunInMode 52 6 GraphicsServices.. __CFRunLoopServiceMachPort 88 3 CoreFoundation 0x30415ed2 __CFRunLoopRun 350 4 CoreFoundation 0x30415c80 CFRunLoopRunSpecific 224 5 CoreFoundation 0x30415b88 CFRunLoopRunInMode 52 6 GraphicsServices 0x31eec4a4 GSEventRunModal 108 7 GraphicsServices..
NSURLConnection and grand central dispatch http://stackoverflow.com/questions/5037545/nsurlconnection-and-grand-central-dispatch lecturer said Threads Are Evil for network programming and recommended to use asynchronous network programming with RunLoop. Use background thread Grand Central Dispatch Concurrent Queue for thread safe data processing not for network programming... completeBlock errorBlock have to be called from Main Thread because it is required to use asynchronous API with RunLoop. AsyncURLConnection request url completeBlock ^ NSData data success dispatch_async dispatch_get_global_queue DISPATCH_QUEUE_PRIORITY_DEFAULT..
http://stackoverflow.com/questions/5183171/myapp-has-active-assertions-beyond-permitted-time-crash-corelocationregistra 0x33b5d268 mach_msg_trap 20 1 libSystem.B.dylib 0x33b5f354 mach_msg 44 2 CoreFoundation 0x33a48648 __CFRunLoopServiceMachPort 88 3 CoreFoundation 0x33a47ed2 __CFRunLoopRun 350 4 CoreFoundation 0x33a47c80 CFRunLoopRunSpecific 224.. 0x33b5f354 mach_msg 44 2 CoreFoundation 0x33a48648 __CFRunLoopServiceMachPort 88 3 CoreFoundation 0x33a47ed2 __CFRunLoopRun 350 4 CoreFoundation 0x33a47c80 CFRunLoopRunSpecific 224 5 CoreFoundation 0x33a47b88 CFRunLoopRunInMode 52 6 GraphicsServices.. __CFRunLoopServiceMachPort 88 3 CoreFoundation 0x33a47ed2 __CFRunLoopRun 350 4 CoreFoundation 0x33a47c80 CFRunLoopRunSpecific 224 5 CoreFoundation 0x33a47b88 CFRunLoopRunInMode 52 6 GraphicsServices 0x33b0e4a4 GSEventRunModal 108 7 GraphicsServices..
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