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2014/10/15 ¤U¤È 10:10:37

iphone Programming Glossary: iscancelled

when is it safe to release an NSThread?

http://stackoverflow.com/questions/1151637/when-is-it-safe-to-release-an-nsthread

alloc init processCondition lock outer loop this loop runs until my application exits while NSThread currentThread isCancelled NSAutoreleasePool middlePool NSAutoreleasePool alloc if processGo inner loop this loop runs typically for a few seconds.. alloc if processGo inner loop this loop runs typically for a few seconds while processGo NSThread currentThread isCancelled NSAutoreleasePool innerPool NSAutoreleasePool alloc init within inner loop this takes a fraction of a second self doSomething..

How do I do an Asychronous NSURLConnection inside an NSOperation?

http://stackoverflow.com/questions/1304508/how-do-i-do-an-asychronous-nsurlconnection-inside-an-nsoperation

downloadAndParsePool @end @implementation LibXMLOperation @synthesize urlConnection done void start if self isCancelled self willChangeValueForKey @ isExecuting executing YES set up the thread and kick it off... NSURLCache sharedURLCache removeAllCachedResponses..

NSOperations or NSThread for bursts of smaller tasks that continuously cancel each other?

http://stackoverflow.com/questions/2840406/nsoperations-or-nsthread-for-bursts-of-smaller-tasks-that-continuously-cancel-ea

NSString searchString if self super init self setSearchTerm searchString return self void main if self isCancelled return self setJSONresult do webservice call synchronously if self isCancelled return self setParsedResult parse JSON result.. return self void main if self isCancelled return self setJSONresult do webservice call synchronously if self isCancelled return self setParsedResult parse JSON result if self isCancelled return self performSelectorOnMainThread @selector searchDataReady.. do webservice call synchronously if self isCancelled return self setParsedResult parse JSON result if self isCancelled return self performSelectorOnMainThread @selector searchDataReady withObject self.parsedResult waitUntilDone YES @end There..

Subclassing NSOperation to be concurrent and cancellable

http://stackoverflow.com/questions/3859631/subclassing-nsoperation-to-be-concurrent-and-cancellable

example. Here is my source code @synthesize isExecuting _isExecuting @synthesize isFinished _isFinished @synthesize isCancelled _isCancelled BOOL isConcurrent return YES void start WHY SHOULD I PUT THIS if NSThread isMainThread self performSelectorOnMainThread.. is my source code @synthesize isExecuting _isExecuting @synthesize isFinished _isFinished @synthesize isCancelled _isCancelled BOOL isConcurrent return YES void start WHY SHOULD I PUT THIS if NSThread isMainThread self performSelectorOnMainThread.. NO return self willChangeValueForKey @ isExecuting _isExecuting YES self didChangeValueForKey @ isExecuting if _isCancelled YES NSLog @ OPERATION CANCELED else NSLog @ Operation started. sleep 1 self finish void finish NSLog @ operationfinished...

how to cancel out of operation created with addOperationWithBlock?

http://stackoverflow.com/questions/4962673/how-to-cancel-out-of-operation-created-with-addoperationwithblock

could do something like __block NSBlockOperation operation NSBlockOperation blockOperationWithBlock ^ while operation isCancelled Some long operation self queue addOperation operation This lets you use blocks while giving you a little more control over..

Can you use cancel/isCancelled with GCD/dispatch_async?

http://stackoverflow.com/questions/5449469/can-you-use-cancel-iscancelled-with-gcd-dispatch-async

you use cancel isCancelled with GCD dispatch_async I've been wondering can you use cancel cancelAllOperations .isCancelled with a thread you have.. you use cancel isCancelled with GCD dispatch_async I've been wondering can you use cancel cancelAllOperations .isCancelled with a thread you have launched with GCD Currently I just use a boolean as a flag to cancel the background process. Let's.. System Working return This all works perfectly. But ........ is it possible to use cancel cancelAllOperations .isCancelled with this type of use of GCD What's the story here Cheers. PS for any beginners using this six part background template...

ARC, Blocks and Retain Cycles

http://stackoverflow.com/questions/7761074/arc-blocks-and-retain-cycles

operation AFHTTPRequestOperation alloc initWithRequest request operation setCompletionBlock ^ if operation isCancelled return ... do stuff ... operation nil In this case the compiler gives a warning that using 'operation' in the block is..