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2014/10/15 ¤U¤È 10:11:15

iphone Programming Glossary: main_queue

Grand Central Dispatch (GCD) with CoreData

http://stackoverflow.com/questions/4264540/grand-central-dispatch-gcd-with-coredata

is using Core Data for data storage purposes. Here's my scenario along with relevant question dispatch_queue_t main_queue dispatch_get_main_queue dispatch_queue_t request_queue dispatch_queue_create com.app.request NULL dispatch_async request_queue.. for data storage purposes. Here's my scenario along with relevant question dispatch_queue_t main_queue dispatch_get_main_queue dispatch_queue_t request_queue dispatch_queue_create com.app.request NULL dispatch_async request_queue ^ MyNSManagedObject.. methods are called automatically. Consequently the UI updation logic kicks. Now my question is do I need to use main_queue for saveManagedObjectContext Should I perform all operations on my NSManagedObject in main_queue Some of the operations..

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

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.. 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.. 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 that loops over multiple..

GCD, Threads, Program Flow and UI Updating

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

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.. 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 by recursion... newChild.numberOfMoves solutionNode newChild minMoves newChild.numberOfMoves Update UI on main Thread dispatch_async main_queue ^ minMovesLabel.stringValue NSString stringWithFormat @ d minMoves numSolutionsLabel.stringValue NSString stringWithFormat..

How can I mute the capture sound in AVFoundation?

http://stackoverflow.com/questions/9557081/how-can-i-mute-the-capture-sound-in-avfoundation

sampleBuffer fromConnection AVCaptureConnection connection We create an autorelease pool because as we are not in the main_queue our code is not executed in the main thread. So we have to create an autorelease pool for the thread we are in if captureImageNow.. in the main thread because UIKit is no thread safe and as we are not in the main thread remember we didn't use the main_queue we use performSelectorOnMainThread to call our CALayer and tell it to display the CGImage. We display the result on the..