2014/10/15 下午 10:07:01

iphone Programming Glossary: dispatch_queue_priority_default

Getting user location every n minutes after app goes to background

http://stackoverflow.com/questions/10235203/getting-user-location-every-n-minutes-after-app-goes-to-background

UIBackgroundTaskInvalid Start the long running task and return immediately. dispatch_async dispatch_get_global_queue DISPATCH_QUEUE_PRIORITY_DEFAULT 0 ^ Do the work associated with the task. self.timer nil self initTimer initTimer void initTimer Create the location manager.. UIBackgroundTaskInvalid Start the long running task and return immediately. dispatch_async dispatch_get_global_queue DISPATCH_QUEUE_PRIORITY_DEFAULT 0 ^ Do the work associated with the task. self initTimer void locationManager CLLocationManager manager didFailWithError.. Start the long running task and return immediately. self initTimer dispatch_async dispatch_get_global_queue DISPATCH_QUEUE_PRIORITY_DEFAULT 0 ^ Do the work associated with the task. I am also invalidating the timer void checkUpdates NSTimer timer UIApplication..

NSURLRequest : Post data and read the posted page

http://stackoverflow.com/questions/10300353/nsurlrequest-post-data-and-read-the-posted-page

charset utf 8 forHTTPHeaderField @ Content Type request setHTTPBody postData dispatch_async dispatch_get_global_queue DISPATCH_QUEUE_PRIORITY_DEFAULT 0 ^ Peform the request NSURLResponse response NSError error nil NSData receivedData NSURLConnection sendSynchronousRequest..

Table View Scrolling Async

http://stackoverflow.com/questions/11486828/table-view-scrolling-async

UIView imageNamed @ blank_image.png the get the image in the background dispatch_async dispatch_get_global_queue DISPATCH_QUEUE_PRIORITY_DEFAULT 0 ^ get the UIImage UIImage image self getImage imagename if we found it then update UI if image dispatch_async dispatch_get_main_queue..

Iphone Application:-My Application Crash

http://stackoverflow.com/questions/13969820/iphone-application-my-application-crash

iphone ios running in separate thread

http://stackoverflow.com/questions/3869217/iphone-ios-running-in-separate-thread

with the results in the main run loop is incredibly easy and compact dispatch_async dispatch_get_global_queue DISPATCH_QUEUE_PRIORITY_DEFAULT 0 ^ Add code here to do background processing dispatch_async dispatch_get_main_queue ^ Add code here to update the UI send..

beginBackgroundTaskWithExpirationHandler

http://stackoverflow.com/questions/3871149/beginbackgroundtaskwithexpirationhandler

^ app endBackgroundTask bgTask bgTask UIBackgroundTaskInvalid dispatch_async dispatch_get_global_queue DISPATCH_QUEUE_PRIORITY_DEFAULT 0 ^ app endBackgroundTask bgTask bgTask UIBackgroundTaskInvalid iphone cocoa touch share improve this question You..

iPhone - Backgrounding to poll for events

http://stackoverflow.com/questions/4656214/iphone-backgrounding-to-poll-for-events

UIBackgroundTaskInvalid Start the long running task and return immediately. dispatch_async dispatch_get_global_queue DISPATCH_QUEUE_PRIORITY_DEFAULT 0 ^ you can do sth. here or simply do nothing All your background treads and timers are still being executed while background.. bgTask bgTask UIBackgroundTaskInvalid Start the long running task dispatch_async dispatch_get_global_queue DISPATCH_QUEUE_PRIORITY_DEFAULT 0 ^ while 1 NSLog @ BGTime left f UIApplication sharedApplication .backgroundTimeRemaining self doSomething sleep 1 void.. bgTask bgTask UIBackgroundTaskInvalid Start the long running task dispatch_async dispatch_get_global_queue DISPATCH_QUEUE_PRIORITY_DEFAULT 0 ^ while 1 NSLog @ BGTime left f UIApplication sharedApplication .backgroundTimeRemaining self doSomething sleep 1 After..

setKeepAliveTimeout and BackgroundTasks

http://stackoverflow.com/questions/4777499/setkeepalivetimeout-and-backgroundtasks

app endBackgroundTask bgTask bgTask UIBackgroundTaskInvalid self cancel dispatch_async dispatch_get_global_queue DISPATCH_QUEUE_PRIORITY_DEFAULT 0 ^ NSMutableURLRequest anURLRequest NSURLResponse outResponse NSError exitError NSString username NSString password NSLog..

NSURLConnection and grand central dispatch

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

RunLoop. AsyncURLConnection request url completeBlock ^ NSData data success 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..

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

safe. dispatch_queue_t mainQueue dispatch_get_main_queue dispatch_queue_t concurrentQueue dispatch_get_global_queue DISPATCH_QUEUE_PRIORITY_DEFAULT 0 dispatch_async concurrentQueue ^ dispatch_apply thumbnails count concurrentQueue ^ size_t index Thumbnail thumbnail thumbnails..

iOS application executing tasks in background

http://stackoverflow.com/questions/5323634/ios-application-executing-tasks-in-background

iPhone:Programmatically compressing recorded video to share?

http://stackoverflow.com/questions/5687341/iphoneprogrammatically-compressing-recorded-video-to-share

YES void copyTempVideoToMediaLibrary NSString videoURL dispatch_queue_t mainQueue dispatch_get_global_queue DISPATCH_QUEUE_PRIORITY_DEFAULT 0 dispatch_async mainQueue ^ ALAssetsLibrary library ALAssetsLibrary alloc init autorelease ALAssetsLibraryWriteVideoCompletionBlock..

Load image to a tableView from URL iphone sdk

http://stackoverflow.com/questions/7565123/load-image-to-a-tableview-from-url-iphone-sdk

images in background thread like this get a dispatch queue dispatch_queue_t concurrentQueue dispatch_get_global_queue DISPATCH_QUEUE_PRIORITY_DEFAULT 0 this will start the image loading in bg dispatch_async concurrentQueue ^ NSData image NSData alloc initWithContentsOfURL..

Specifying HTTP referer in embedded UIWebView

http://stackoverflow.com/questions/7913305/specifying-http-referer-in-embedded-uiwebview

.. is this my referer return YES else relaunch with a modified request dispatch_async dispatch_get_global_queue DISPATCH_QUEUE_PRIORITY_DEFAULT 0 ^ dispatch_async dispatch_get_main_queue ^ NSURL url request URL NSMutableURLRequest request NSMutableURLRequest requestWithURL..

Crash when adding persistent store (iCloud enabled) in app delegate

http://stackoverflow.com/questions/8021753/crash-when-adding-persistent-store-icloud-enabled-in-app-delegate

NSPersistentStoreCoordinator psc __persistentStoreCoordinator dispatch_async dispatch_get_global_queue DISPATCH_QUEUE_PRIORITY_DEFAULT 0 ^ NSFileManager fileManager NSFileManager defaultManager NSDictionary options nil NSURL cloudURL fileManager URLForUbiquityContainerIdentifier..