iphone Programming Glossary: queue

iOS crash reports: atos not working as expected

http://stackoverflow.com/questions/13574933/ios-crash-reports-atos-not-working-as-expected

SIGSEGV Exception Codes KERN_INVALID_ADDRESS at 0x51fe5264 Crashed Thread 0 Thread 0 name Dispatch queue com.apple.main thread Thread 0 Crashed 0 libobjc.A.dylib 0x352925b0 objc_msgSend 16 1 MYAPP 0x0006573a..

Does UIGestureRecognizer work on a UIWebView?

http://stackoverflow.com/questions/2909807/does-uigesturerecognizer-work-on-a-uiwebview

@ myscheme .. parse arguments return NO You can see in the PhoneGap code that they set up a queue and timer to send the messages. Depending on your usage you may need to do the same thing. There are..

Turn on torch/flash on iPhone 4

http://stackoverflow.com/questions/3190034/turn-on-torch-flash-on-iphone-4

videoOutput AVCaptureVideoDataOutput alloc init videoOutput setSampleBufferDelegate self queue dispatch_get_current_queue captureSession addOutput videoOutput captureSession startRunning videoCaptureDevice.torchMode.. alloc init videoOutput setSampleBufferDelegate self queue dispatch_get_current_queue captureSession addOutput videoOutput captureSession startRunning videoCaptureDevice.torchMode AVCaptureTorchModeOn..

Do you need to create an NSAutoreleasePool within a block in GCD?

http://stackoverflow.com/questions/4141123/do-you-need-to-create-an-nsautoreleasepool-within-a-block-in-gcd

by default. Does the same rule apply to a block that is placed within a Grand Central Dispatch queue and will be run on a non main thread That is do you need to create an NSAutoreleasePool within each.. need to create an NSAutoreleasePool within each block you dispatch to anything other than the main queue In my limited testing I don't see the console warnings for autoreleased objects that you normally see.. this question Does the same rule apply to a block that is placed within a Grand Central Dispatch queue and will be run on a non main thread That is do you need to create an NSAutoreleasePool within each..

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

under Snow Leopard and iOS 4.0 is to use blocks like in the following rudimentary sample dispatch_queue_t main_queue dispatch_get_main_queue dispatch_async queue ^ Do some work dispatch_async main_queue ^.. and iOS 4.0 is to use blocks like in the following rudimentary sample dispatch_queue_t main_queue dispatch_get_main_queue dispatch_async queue ^ Do some work dispatch_async main_queue ^ Update the UI.. use blocks like in the following rudimentary sample dispatch_queue_t main_queue dispatch_get_main_queue dispatch_async queue ^ Do some work dispatch_async main_queue ^ Update the UI The Do some work part..

How to Sync iPhone Core Data with web server, and then push to other devices?

http://stackoverflow.com/questions/5035132/how-to-sync-iphone-core-data-with-web-server-and-then-push-to-other-devices

does not reach the server or if the device is not online the app will add the change set to a queue to send when it does come online. The server sitting in the cloud merges the specific change sets it.. merges the specific change sets it receives with its master database. After a change set or a queue of change sets is merged on the cloud server the server pushes all of those change sets to the other..

CADisplayLink OpenGL rendering breaks UIScrollView behaviour

http://stackoverflow.com/questions/5944050/cadisplaylink-opengl-rendering-breaks-uiscrollview-behaviour

your OpenGL ES rendering actions on a background thread by using a Grand Central Dispatch serial queue. I did this in my recent update to Molecules source code for which can be found at that link and in.. that's onscreen at the same time as the rendering. For this you can create a GCD serial dispatch queue and use it for all of your rendering updates to a particular OpenGL ES context to avoid two actions.. dispatch_semaphore_create 1 This code will only add a new frame rendering action onto the queue if one isn't in the middle of executing. That way the CADisplayLink can fire continuously but it won't..

GCD, Threads, Program Flow and UI Updating

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

withObject rootNode I've tried to use GCD but similar issue and can't get UI updated. dispatch_queue_t queue dispatch_queue_create com.gamesbychris.createTree 0 dispatch_sync queue ^ self createTreeFromNode.. rootNode I've tried to use GCD but similar issue and can't get UI updated. dispatch_queue_t queue dispatch_queue_create com.gamesbychris.createTree 0 dispatch_sync queue ^ self createTreeFromNode rootNode.. I've tried to use GCD but similar issue and can't get UI updated. dispatch_queue_t queue dispatch_queue_create com.gamesbychris.createTree 0 dispatch_sync queue ^ self createTreeFromNode rootNode Need to..

iOS crash reports: atos not working as expected

http://stackoverflow.com/questions/13574933/ios-crash-reports-atos-not-working-as-expected

10A523 Report Version 104 Exception Type EXC_BAD_ACCESS SIGSEGV Exception Codes KERN_INVALID_ADDRESS at 0x51fe5264 Crashed Thread 0 Thread 0 name Dispatch queue com.apple.main thread Thread 0 Crashed 0 libobjc.A.dylib 0x352925b0 objc_msgSend 16 1 MYAPP 0x0006573a MyViewController Images didReceiveImage context etag expires..

Does UIGestureRecognizer work on a UIWebView?

http://stackoverflow.com/questions/2909807/does-uigesturerecognizer-work-on-a-uiwebview

inType if inRequest URL absoluteString hasPrefix @ myscheme .. parse arguments return NO You can see in the PhoneGap code that they set up a queue and timer to send the messages. Depending on your usage you may need to do the same thing. There are other questions on SO on this topic. Here is the Event Handling..

Turn on torch/flash on iPhone 4

http://stackoverflow.com/questions/3190034/turn-on-torch-flash-on-iphone-4

captureSession addInput videoInput AVCaptureVideoDataOutput videoOutput AVCaptureVideoDataOutput alloc init videoOutput setSampleBufferDelegate self queue dispatch_get_current_queue captureSession addOutput videoOutput captureSession startRunning videoCaptureDevice.torchMode AVCaptureTorchModeOn Does anybody know.. videoInput AVCaptureVideoDataOutput videoOutput AVCaptureVideoDataOutput alloc init videoOutput setSampleBufferDelegate self queue dispatch_get_current_queue captureSession addOutput videoOutput captureSession startRunning videoCaptureDevice.torchMode AVCaptureTorchModeOn Does anybody know if this would work or am I..

Do you need to create an NSAutoreleasePool within a block in GCD?

http://stackoverflow.com/questions/4141123/do-you-need-to-create-an-nsautoreleasepool-within-a-block-in-gcd

for that thread or operation because none exists by default. Does the same rule apply to a block that is placed within a Grand Central Dispatch queue and will be run on a non main thread That is do you need to create an NSAutoreleasePool within each block you dispatch to anything other than the main queue In.. queue and will be run on a non main thread That is do you need to create an NSAutoreleasePool within each block you dispatch to anything other than the main queue In my limited testing I don't see the console warnings for autoreleased objects that you normally see with background threads or NSOperations. However I can't seem.. c cocoa osx grand central dispatch share improve this question Does the same rule apply to a block that is placed within a Grand Central Dispatch queue and will be run on a non main thread That is do you need to create an NSAutoreleasePool within each block you dispatch to anything other than the main queue Grand..

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

back on the main thread. Perhaps the easiest way to do this under Snow Leopard and iOS 4.0 is to use blocks like in the following rudimentary sample dispatch_queue_t main_queue dispatch_get_main_queue dispatch_async queue ^ Do some work dispatch_async main_queue ^ Update the UI The Do some work part of the above could be.. main thread. Perhaps the easiest way to do this under Snow Leopard and iOS 4.0 is to use blocks like in the following rudimentary sample dispatch_queue_t main_queue dispatch_get_main_queue dispatch_async queue ^ Do some work dispatch_async main_queue ^ Update the UI The Do some work part of the above could be a lengthy calculation.. easiest way to do this under Snow Leopard and iOS 4.0 is to use blocks like in the following rudimentary sample dispatch_queue_t main_queue dispatch_get_main_queue dispatch_async queue ^ Do some work dispatch_async main_queue ^ Update the UI The Do some work part of the above could be a lengthy calculation or an operation..

How to Sync iPhone Core Data with web server, and then push to other devices?

http://stackoverflow.com/questions/5035132/how-to-sync-iphone-core-data-with-web-server-and-then-push-to-other-devices

ID of the device which sent the changeset. b If the changeset does not reach the server or if the device is not online the app will add the change set to a queue to send when it does come online. The server sitting in the cloud merges the specific change sets it receives with its master database. After a change set or a.. send when it does come online. The server sitting in the cloud merges the specific change sets it receives with its master database. After a change set or a queue of change sets is merged on the cloud server the server pushes all of those change sets to the other devices registered with the server using some sort of polling..

CADisplayLink OpenGL rendering breaks UIScrollView behaviour

http://stackoverflow.com/questions/5944050/cadisplaylink-opengl-rendering-breaks-uiscrollview-behaviour

for the CADisplayLink. One way around this is to perform your OpenGL ES rendering actions on a background thread by using a Grand Central Dispatch serial queue. I did this in my recent update to Molecules source code for which can be found at that link and in testing with using NSRunLoopCommonModes on my CADisplayLink.. interruption of the native scrolling behavior of a table view that's onscreen at the same time as the rendering. For this you can create a GCD serial dispatch queue and use it for all of your rendering updates to a particular OpenGL ES context to avoid two actions writing to the context at the same time. Then within your CADisplayLink.. is created earlier as follows frameRenderingSemaphore dispatch_semaphore_create 1 This code will only add a new frame rendering action onto the queue if one isn't in the middle of executing. That way the CADisplayLink can fire continuously but it won't overload the queue with pending rendering actions if a frame..

GCD, Threads, Program Flow and UI Updating

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

self performSelectorInBackground @selector createTreeFromNode withObject rootNode I've tried to use GCD but similar issue and can't get UI updated. dispatch_queue_t queue dispatch_queue_create com.gamesbychris.createTree 0 dispatch_sync queue ^ self createTreeFromNode rootNode Need to wait here until createTreeFromNode is.. @selector createTreeFromNode withObject rootNode I've tried to use GCD but similar issue and can't get UI updated. dispatch_queue_t queue dispatch_queue_create com.gamesbychris.createTree 0 dispatch_sync queue ^ self createTreeFromNode rootNode Need to wait here until createTreeFromNode is finished... @selector createTreeFromNode withObject rootNode I've tried to use GCD but similar issue and can't get UI updated. dispatch_queue_t queue dispatch_queue_create com.gamesbychris.createTree 0 dispatch_sync queue ^ self createTreeFromNode rootNode Need to wait here until createTreeFromNode is finished. solveButton.enabled..

iOS crash reports: atos not working as expected

http://stackoverflow.com/questions/13574933/ios-crash-reports-atos-not-working-as-expected

Type EXC_BAD_ACCESS SIGSEGV Exception Codes KERN_INVALID_ADDRESS at 0x51fe5264 Crashed Thread 0 Thread 0 name Dispatch queue com.apple.main thread Thread 0 Crashed 0 libobjc.A.dylib 0x352925b0 objc_msgSend 16 1 MYAPP 0x0006573a MyViewController..

Does UIGestureRecognizer work on a UIWebView?

http://stackoverflow.com/questions/2909807/does-uigesturerecognizer-work-on-a-uiwebview

absoluteString hasPrefix @ myscheme .. parse arguments return NO You can see in the PhoneGap code that they set up a queue and timer to send the messages. Depending on your usage you may need to do the same thing. There are other questions on..

Turn on torch/flash on iPhone 4

http://stackoverflow.com/questions/3190034/turn-on-torch-flash-on-iphone-4

AVCaptureVideoDataOutput videoOutput AVCaptureVideoDataOutput alloc init videoOutput setSampleBufferDelegate self queue dispatch_get_current_queue captureSession addOutput videoOutput captureSession startRunning videoCaptureDevice.torchMode.. videoOutput AVCaptureVideoDataOutput alloc init videoOutput setSampleBufferDelegate self queue dispatch_get_current_queue captureSession addOutput videoOutput captureSession startRunning videoCaptureDevice.torchMode AVCaptureTorchModeOn Does..

Do you need to create an NSAutoreleasePool within a block in GCD?

http://stackoverflow.com/questions/4141123/do-you-need-to-create-an-nsautoreleasepool-within-a-block-in-gcd

because none exists by default. Does the same rule apply to a block that is placed within a Grand Central Dispatch queue and will be run on a non main thread That is do you need to create an NSAutoreleasePool within each block you dispatch to.. That is do you need to create an NSAutoreleasePool within each block you dispatch to anything other than the main queue In my limited testing I don't see the console warnings for autoreleased objects that you normally see with background threads.. share improve this question Does the same rule apply to a block that is placed within a Grand Central Dispatch queue and will be run on a non main thread That is do you need to create an NSAutoreleasePool within each block you dispatch to..

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

way to do this under Snow Leopard and iOS 4.0 is to use blocks like in the following rudimentary sample dispatch_queue_t main_queue dispatch_get_main_queue dispatch_async queue ^ Do some work dispatch_async main_queue ^ Update the UI The.. do this under Snow Leopard and iOS 4.0 is to use blocks like in the following rudimentary sample dispatch_queue_t main_queue dispatch_get_main_queue dispatch_async queue ^ Do some work dispatch_async main_queue ^ Update the UI The Do some work.. and iOS 4.0 is to use blocks like in the following rudimentary sample dispatch_queue_t main_queue dispatch_get_main_queue dispatch_async queue ^ Do some work dispatch_async main_queue ^ Update the UI The Do some work part of the above could..

How to Sync iPhone Core Data with web server, and then push to other devices?

http://stackoverflow.com/questions/5035132/how-to-sync-iphone-core-data-with-web-server-and-then-push-to-other-devices

b If the changeset does not reach the server or if the device is not online the app will add the change set to a queue to send when it does come online. The server sitting in the cloud merges the specific change sets it receives with its master.. sitting in the cloud merges the specific change sets it receives with its master database. After a change set or a queue of change sets is merged on the cloud server the server pushes all of those change sets to the other devices registered..

CADisplayLink OpenGL rendering breaks UIScrollView behaviour

http://stackoverflow.com/questions/5944050/cadisplaylink-opengl-rendering-breaks-uiscrollview-behaviour

this is to perform your OpenGL ES rendering actions on a background thread by using a Grand Central Dispatch serial queue. I did this in my recent update to Molecules source code for which can be found at that link and in testing with using NSRunLoopCommonModes.. of a table view that's onscreen at the same time as the rendering. For this you can create a GCD serial dispatch queue and use it for all of your rendering updates to a particular OpenGL ES context to avoid two actions writing to the context.. frameRenderingSemaphore dispatch_semaphore_create 1 This code will only add a new frame rendering action onto the queue if one isn't in the middle of executing. That way the CADisplayLink can fire continuously but it won't overload the queue..

GCD, Threads, Program Flow and UI Updating

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

createTreeFromNode withObject rootNode I've tried to use GCD but similar issue and can't get UI updated. dispatch_queue_t queue dispatch_queue_create com.gamesbychris.createTree 0 dispatch_sync queue ^ self createTreeFromNode rootNode Need.. withObject rootNode I've tried to use GCD but similar issue and can't get UI updated. dispatch_queue_t queue dispatch_queue_create com.gamesbychris.createTree 0 dispatch_sync queue ^ self createTreeFromNode rootNode Need to wait.. withObject rootNode I've tried to use GCD but similar issue and can't get UI updated. dispatch_queue_t queue dispatch_queue_create com.gamesbychris.createTree 0 dispatch_sync queue ^ self createTreeFromNode rootNode Need to wait here until createTreeFromNode..

Audio on the iPhone

http://stackoverflow.com/questions/1002838/audio-on-the-iphone

have to load from too many files. Any idea which audio API will be able to do this I reckon either OpenAL or Audio Queue Services but am not sure which is suitable. Any links to guides sample code is also much appreciated. Thanks in advance... in advance. iphone audio share improve this question I went down this road in 2009 trying Audio Toolkit Audio Queue Services openAL and finally settling on the RemoteIO AudioUnit. Audio Toolbox is fine for basic triggered sound effects.. Toolbox is fine for basic triggered sound effects but it wasn't able to change frequencies or loop samples. Audio Queue Services can loop samples but the only way I could find to adjust the playback frequency of a sample was to re read the..

Apple reject because of In app purchase not implement restore [closed]

http://stackoverflow.com/questions/11200460/apple-reject-because-of-in-app-purchase-not-implement-restore

Guide. ... And I found this page and I followed the sample code but after I called void checkPurchasedItems SKPaymentQueue defaultQueue restoreCompletedTransactions another delegate was not fired void paymentQueueRestoreCompletedTransactionsFinished.. And I found this page and I followed the sample code but after I called void checkPurchasedItems SKPaymentQueue defaultQueue restoreCompletedTransactions another delegate was not fired void paymentQueueRestoreCompletedTransactionsFinished SKPaymentQueue.. SKPaymentQueue defaultQueue restoreCompletedTransactions another delegate was not fired void paymentQueueRestoreCompletedTransactionsFinished SKPaymentQueue queue It only popups an alert view to let you enter your Apple ID .....

Extend app for iPhone 5 - best practice

http://stackoverflow.com/questions/12518879/extend-app-for-iphone-5-best-practice

color replacement in image for iphone application

http://stackoverflow.com/questions/15082025/color-replacement-in-image-for-iphone-application

along with some threshold for replacement I have tried two approaches but could not got working as expected Approach 1 Queue based Flood Fill algorithm for color replacement but with i got below output with terribly slow and wall shadow has not..

iPhone audio analysis

http://stackoverflow.com/questions/2110009/iphone-audio-analysis

I look to get started on such code Thanks for your help. iphone share improve this question Look in the Audio Queue framework . This is what I use to get a high water mark AudioQueueRef audioQueue Imagine this is correctly set up UInt32.. share improve this question Look in the Audio Queue framework . This is what I use to get a high water mark AudioQueueRef audioQueue Imagine this is correctly set up UInt32 dataSize sizeof AudioQueueLevelMeterState recordFormat.mChannelsPerFrame.. this question Look in the Audio Queue framework . This is what I use to get a high water mark AudioQueueRef audioQueue Imagine this is correctly set up UInt32 dataSize sizeof AudioQueueLevelMeterState recordFormat.mChannelsPerFrame AudioQueueLevelMeterState..

Determining the magnitude of a certain frequency on the iPhone

http://stackoverflow.com/questions/2921674/determining-the-magnitude-of-a-certain-frequency-on-the-iphone

about a specific frequency. I'll be using the iPhone mic to record the audio. My guess is that I'll be using the Audio Queue Services for recording since I don't need to record the audio to a file. I'm using SDK 4.0 so I can use any of the functions..

iOS multitasking for an Audio Recording application

http://stackoverflow.com/questions/3848172/ios-multitasking-for-an-audio-recording-application

Data format from recording using Audio Queue framework

http://stackoverflow.com/questions/3963827/data-format-from-recording-using-audio-queue-framework

format from recording using Audio Queue framework I'm writing an iPhone app which should record the users voice and feed the audio data into a library for modifications.. data into the SoundTouch library http www.surina.net soundtouch to change the pitch. I became familiar with the Audio Queue framework while going through the code and I found the place where I receive the audio data from the recording. Essentially.. through the code and I found the place where I receive the audio data from the recording. Essentially you call AudioQueueNewInput to create a new input queue. You pass a callback function which is called every time a chunk of audio data is available...

Record and play audio Simultaneously

http://stackoverflow.com/questions/4215180/record-and-play-audio-simultaneously

and record simultaneously on iOS devices except the 1st gen Touch using either the Audio Unit RemoteIO or the Audio Queue API. These are lower level APIs where you have to handle the incoming buffers of outgoing and incoming PCM samples yourself...

2 mp3 sounds at the same time in iphone?

http://stackoverflow.com/questions/5026105/2-mp3-sounds-at-the-same-time-in-iphone

on the iphone Does iphone support this feature iphone share improve this question Use the interfaces in Audio Queue Services AudioToolbox AudioQueue.h . Create one audio queue object for each sound that you want to play. Then specify simultaneous.. this feature iphone share improve this question Use the interfaces in Audio Queue Services AudioToolbox AudioQueue.h . Create one audio queue object for each sound that you want to play. Then specify simultaneous start times for the first.. you want to play. Then specify simultaneous start times for the first audio buffer in each audio queue using the AudioQueueEnqueueBufferWithParameters function. The following limitations pertain for simultaneous sounds in iPhone OS depending on..

NSURLConnection and grand central dispatch

http://stackoverflow.com/questions/5037545/nsurlconnection-and-grand-central-dispatch

to use asynchronous network programming with RunLoop. Use background thread Grand Central Dispatch Concurrent Queue for thread safe data processing not for network programming. By the way Blocks and Grand Central Dispatch sessions are also.. dispatch_async dispatch_get_global_queue DISPATCH_QUEUE_PRIORITY_DEFAULT 0 ^ process downloaded data in Concurrent Queue dispatch_async dispatch_get_main_queue ^ update UI on Main Thread errorBlock ^ NSError error error share improve this..

iOS Stream Audio from one iOS Device to Another

http://stackoverflow.com/questions/8357514/ios-stream-audio-from-one-ios-device-to-another

Reference Reference.html http developer.apple.com library mac #documentation MusicAudio Conceptual AudioQueueProgrammingGuide Introduction Introduction.html I am just lost. Information overload. I've implemented Cocoa With Love's.. it comes in. iphone objective c ios ipad stream share improve this question The API you need to look at is Audio Queue Services . Right here goes for a basic overview of what you need to do. When you playback audio you set up a queue or a.. stop the queue or there's no more data to playback. The two main lower level APIs in iOS are Audio Unit and Audio Queue. By lower level I mean an API that is a bit more nitty gritty than saying just play back this mp3 or whatever. My experience..

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