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2014/10/15 ¤U¤È 10:09:30

iphone Programming Glossary: gcd

How to check for an active Internet Connection on iPhone SDK?

http://stackoverflow.com/questions/1083701/how-to-check-for-an-active-internet-connection-on-iphone-sdk

c ios cocoa touch reachability share improve this question METHOD 1 Use a simple ARC and GCD compatible class to do it 1 Add SystemConfiguration framework to the project but don't worry about including..

Fast and Lean PDF Viewer for iPhone / iPad / iOs - tips and hints?

http://stackoverflow.com/questions/3889634/fast-and-lean-pdf-viewer-for-iphone-ipad-ios-tips-and-hints

approach is this one Note that images will render faster than a CGPDFPageRef Use NSOperations or GCD Blocks to prepare pages ahead of time. call CGContextSetInterpolationQuality ctx kCGInterpolationHigh..

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

you need to create an NSAutoreleasePool within a block in GCD Normally if you spawn a background thread or run an NSOperation on an NSOperationQueue you need to.. block ™s code in an @autorelease block to handle the memory management for those objects. Although GCD dispatch queues have their own autorelease pools they make no guarantees as to when those pools are..

Create singleton using GCD's dispatch_once in Objective C

http://stackoverflow.com/questions/5720029/create-singleton-using-gcds-dispatch-once-in-objective-c

singleton using GCD's dispatch_once in Objective C If you can target iOS 4.0 or above Using GCD is it the best way to create.. singleton using GCD's dispatch_once in Objective C If you can target iOS 4.0 or above Using GCD is it the best way to create singleton in Objective C thread safe id sharedInstance static dispatch_once_t..

CADisplayLink OpenGL rendering breaks UIScrollView behaviour

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

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..

GCD, Threads, Program Flow and UI Updating

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

Threads Program Flow and UI Updating I'm having a hard time figuring out how to put this all together... 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.. Needs to run in background so UI can be updated void createTreeFromNode TreeNode node Tried using GCD dispatch_queue_t main_queue dispatch_get_main_queue ...Create Tree Node and find Children Code... if..

How to check for an active Internet Connection on iPhone SDK?

http://stackoverflow.com/questions/1083701/how-to-check-for-an-active-internet-connection-on-iphone-sdk

if so what is a better way to accomplish this iphone objective c ios cocoa touch reachability share improve this question METHOD 1 Use a simple ARC and GCD compatible class to do it 1 Add SystemConfiguration framework to the project but don't worry about including it anywhere 2 Add Tony Million's version of Reachability.h..

Fast and Lean PDF Viewer for iPhone / iPad / iOs - tips and hints?

http://stackoverflow.com/questions/3889634/fast-and-lean-pdf-viewer-for-iphone-ipad-ios-tips-and-hints

arrays with placeholder objects alternitively another design approach is this one Note that images will render faster than a CGPDFPageRef Use NSOperations or GCD Blocks to prepare pages ahead of time. call CGContextSetInterpolationQuality ctx kCGInterpolationHigh CGContextSetRenderingIntent ctx kCGRenderingIntentDefault..

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

you need to create an NSAutoreleasePool within a block in GCD Normally if you spawn a background thread or run an NSOperation on an NSOperationQueue you need to create an NSAutoreleasePool for that thread or operation because.. Objective C objects you might want to enclose parts of your block ™s code in an @autorelease block to handle the memory management for those objects. Although GCD dispatch queues have their own autorelease pools they make no guarantees as to when those pools are drained. If your application is memory constrained creating..

Create singleton using GCD's dispatch_once in Objective C

http://stackoverflow.com/questions/5720029/create-singleton-using-gcds-dispatch-once-in-objective-c

singleton using GCD's dispatch_once in Objective C If you can target iOS 4.0 or above Using GCD is it the best way to create singleton in Objective C thread safe id sharedInstance.. singleton using GCD's dispatch_once in Objective C If you can target iOS 4.0 or above Using GCD is it the best way to create singleton in Objective C thread safe id sharedInstance static dispatch_once_t once static id sharedInstance dispatch_once once ^ sharedInstance..

CADisplayLink OpenGL rendering breaks UIScrollView behaviour

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

I don't see any 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...

GCD, Threads, Program Flow and UI Updating

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

Threads Program Flow and UI Updating I'm having a hard time figuring out how to put this all together. I have a puzzle solving app on the mac. You enter the puzzle.. 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 queue dispatch_queue_create com.gamesbychris.createTree 0 dispatch_sync queue ^ self createTreeFromNode.. @ Not Solvable else solveButton.title @ Solve Puzzle Needs to run in background so UI can be updated void createTreeFromNode TreeNode node Tried using GCD dispatch_queue_t main_queue dispatch_get_main_queue ...Create Tree Node and find Children Code... if solutionFound Solution not found yet so check other children..

How to check for an active Internet Connection on iPhone SDK?

http://stackoverflow.com/questions/1083701/how-to-check-for-an-active-internet-connection-on-iphone-sdk

this iphone objective c ios cocoa touch reachability share improve this question METHOD 1 Use a simple ARC and GCD compatible class to do it 1 Add SystemConfiguration framework to the project but don't worry about including it anywhere..

Fast and Lean PDF Viewer for iPhone / iPad / iOs - tips and hints?

http://stackoverflow.com/questions/3889634/fast-and-lean-pdf-viewer-for-iphone-ipad-ios-tips-and-hints

another design approach is this one Note that images will render faster than a CGPDFPageRef Use NSOperations or GCD Blocks to prepare pages ahead of time. call CGContextSetInterpolationQuality ctx kCGInterpolationHigh CGContextSetRenderingIntent..

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

you need to create an NSAutoreleasePool within a block in GCD Normally if you spawn a background thread or run an NSOperation on an NSOperationQueue you need to create an NSAutoreleasePool.. parts of your block ™s code in an @autorelease block to handle the memory management for those objects. Although GCD dispatch queues have their own autorelease pools they make no guarantees as to when those pools are drained. If your application..

Grand Central Dispatch (GCD) vs. performSelector - need a better explanation

http://stackoverflow.com/questions/5225130/grand-central-dispatch-gcd-vs-performselector-need-a-better-explanation

Central Dispatch GCD vs. performSelector need a better explanation I've used both GCD and performSelectorOnMainThread waitUntilDone in my apps.. Central Dispatch GCD vs. performSelector need a better explanation I've used both GCD and performSelectorOnMainThread waitUntilDone in my apps and tend to think of them as interchangeable that is performSelectorOnMainThread.. tend to think of them as interchangeable that is performSelectorOnMainThread waitUntilDone is an Obj C wrapper to the GCD C syntax. I've been thinking of these two commands as equivalent dispatch_sync dispatch_get_main_queue ^ self doit YES self..

Create singleton using GCD's dispatch_once in Objective C

http://stackoverflow.com/questions/5720029/create-singleton-using-gcds-dispatch-once-in-objective-c

singleton using GCD's dispatch_once in Objective C If you can target iOS 4.0 or above Using GCD is it the best way to create singleton in Objective.. singleton using GCD's dispatch_once in Objective C If you can target iOS 4.0 or above Using GCD is it the best way to create singleton in Objective C thread safe id sharedInstance static dispatch_once_t once static id..

CADisplayLink OpenGL rendering breaks UIScrollView behaviour

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

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..

GCD, Threads, Program Flow and UI Updating

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

Threads Program Flow and UI Updating I'm having a hard time figuring out how to put this all together. I have a puzzle.. 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 queue dispatch_queue_create com.gamesbychris.createTree 0 dispatch_sync.. @ Solve Puzzle Needs to run in background so UI can be updated void createTreeFromNode TreeNode node Tried using GCD dispatch_queue_t main_queue dispatch_get_main_queue ...Create Tree Node and find Children Code... if solutionFound Solution..

Last In-First Out Stack with GCD?

http://stackoverflow.com/questions/7567827/last-in-first-out-stack-with-gcd

In First Out Stack with GCD I have a UITableView that displays images associated with contacts in each row. In some cases these images are read on.. are an avatar rendered based on stored data. I presently have these images being updated on a background thread using GCD. However this loads the images in the order they were requested which means during rapid scrolling the queue becomes lengthy.. one in this context yet. Addition Just to note that while the topic is How do I create a Last In First Out Stack with GCD in reality I just want to solve the issue outlined above and there may be a better way to do it. I am more than open to..