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2014/10/15 ¤U¤È 10:04:19
iphone Programming Glossary: autoreleaseHow can I upload a photo to a server with the iPhone? http://stackoverflow.com/questions/125306/how-can-i-upload-a-photo-to-a-server-with-the-iphone p n __func__ self NSString reply NSString alloc initWithData data encoding NSUTF8StringEncoding autorelease NSLog @ s data s n __func__ reply UTF8String if reply hasPrefix @ YES uploadDidSucceed YES @end Usage..
AES Encryption for an NSString on the iPhone http://stackoverflow.com/questions/1400246/aes-encryption-for-an-nsstring-on-the-iphone NSString alloc initWithData ciphertext AES256DecryptWithKey key encoding NSUTF8StringEncoding autorelease This definitely works on Snow Leopard and @Boz reports that CommonCrypto is part of the Core OS on the..
EXC_BAD_ACCESS signal received http://stackoverflow.com/questions/327082/exc-bad-access-signal-received about anything else including factory methods e.g. NSString stringWithFormat then you'll have an autorelease reference which means it could be released at some time in the future by other code so it is vital that..
display image from URL retrieved from ALAsset in iPhone http://stackoverflow.com/questions/3837115/display-image-from-url-retrieved-from-alasset-in-iphone UITableViewCell alloc initWithStyle UITableViewCellStyleDefault reuseIdentifier CellIdentifier autorelease here 'asset' represents the ALAsset object asset assets objectAtIndex indexPath.row i am accessing the.. asseturl NSURL URLWithString mediaurl ALAssetsLibrary assetslibrary ALAssetsLibrary alloc init autorelease assetslibrary assetForURL asseturl resultBlock resultblock failureBlock failureblock A couple of..
How to filter NSFetchedResultsController (CoreData) with UISearchDisplayController/UISearchBar http://stackoverflow.com/questions/4471289/how-to-filter-nsfetchedresultscontroller-coredata-with-uisearchdisplaycontroll cell CallTableCell alloc initWithStyle UITableViewCellStyleDefault reuseIdentifier @ CallTableCell autorelease self fetchedResultsController self fetchedResultsControllerForTableView theTableView configureCell cell.. searchBar UISearchBar alloc initWithFrame CGRectMake 0 0 self.tableView.frame.size.width 44.0 autorelease searchBar.autoresizingMask UIViewAutoresizingFlexibleWidth searchBar.autocorrectionType UITextAutocorrectionTypeNo.. UISearchDisplayController alloc initWithSearchBar searchBar contentsController self autorelease self.mySearchDisplayController.delegate self self.mySearchDisplayController.searchResultsDataSource..
Understanding reference counting with Cocoa and Objective-C http://stackoverflow.com/questions/6578/understanding-reference-counting-with-cocoa-and-objective-c very elegant once you understand it but I'm just not over the hump yet. How do release retain and autorelease work and what are the conventions about their use Or failing that what did you read which helped you.. objective c cocoa memory share improve this question Let's start with retain and release autorelease is really just a special case once you understand the basic concepts. In Cocoa each object keeps track.. after init s release Ref count is back to 1 s release Ref count is 0 object is freed Now for autorelease . Autorelease is used as a convenient and sometimes necessary way to tell the system to free this object..
Objective C HTML escape/unescape http://stackoverflow.com/questions/659602/objective-c-html-escape-unescape allowLossyConversion YES NSXMLParser xmlParse NSXMLParser alloc initWithData data autorelease xmlParse setDelegate self xmlParse parse return NSString stringWithFormat @ @ resultString void dealloc..
iPhone Data Usage Tracking/Monitoring http://stackoverflow.com/questions/7946699/iphone-data-usage-tracking-monitoring WiFiSent 0 int WiFiReceived 0 int WWANSent 0 int WWANReceived 0 NSString name NSString alloc init autorelease success getifaddrs addrs 0 if success cursor addrs while cursor NULL name NSString stringWithFormat..
File Upload to HTTP server in iphone programming http://stackoverflow.com/questions/936855/file-upload-to-http-server-in-iphone-programming http yourserver.com upload.php NSString filename @ filename request NSMutableURLRequest alloc init autorelease request setURL NSURL URLWithString urlString request setHTTPMethod @ POST NSString boundary @ 14737809831466499882746641449..
How can I upload a photo to a server with the iPhone? http://stackoverflow.com/questions/125306/how-can-i-upload-a-photo-to-a-server-with-the-iphone IN didReceiveData NSData data IN NSLog @ s self 0x p n __func__ self NSString reply NSString alloc initWithData data encoding NSUTF8StringEncoding autorelease NSLog @ s data s n __func__ reply UTF8String if reply hasPrefix @ YES uploadDidSucceed YES @end Usage EPUploader alloc initWithURL NSURL URLWithString @ http yourserver.com..
AES Encryption for an NSString on the iPhone http://stackoverflow.com/questions/1400246/aes-encryption-for-an-nsstring-on-the-iphone decryptData NSData ciphertext withKey NSString key return NSString alloc initWithData ciphertext AES256DecryptWithKey key encoding NSUTF8StringEncoding autorelease This definitely works on Snow Leopard and @Boz reports that CommonCrypto is part of the Core OS on the iPhone. Both 10.4 and 10.5 have usr include CommonCrypto..
EXC_BAD_ACCESS signal received http://stackoverflow.com/questions/327082/exc-bad-access-signal-received it when you are done. But if you get something back from just about anything else including factory methods e.g. NSString stringWithFormat then you'll have an autorelease reference which means it could be released at some time in the future by other code so it is vital that if you need to keep it around beyond the immediate function..
display image from URL retrieved from ALAsset in iPhone http://stackoverflow.com/questions/3837115/display-image-from-url-retrieved-from-alasset-in-iphone CellIdentifier if cell nil cell UITableViewCell alloc initWithStyle UITableViewCellStyleDefault reuseIdentifier CellIdentifier autorelease here 'asset' represents the ALAsset object asset assets objectAtIndex indexPath.row i am accessing the thumbnail here cell.imageView setImage UIImage imageWithCGImage.. isEqualToString AUDIO_EXTENSION largeimage release NSURL asseturl NSURL URLWithString mediaurl ALAssetsLibrary assetslibrary ALAssetsLibrary alloc init autorelease assetslibrary assetForURL asseturl resultBlock resultblock failureBlock failureblock A couple of things to note are that this uses blocks which were new to me..
How to filter NSFetchedResultsController (CoreData) with UISearchDisplayController/UISearchBar http://stackoverflow.com/questions/4471289/how-to-filter-nsfetchedresultscontroller-coredata-with-uisearchdisplaycontroll @ CallTableCell if cell nil cell CallTableCell alloc initWithStyle UITableViewCellStyleDefault reuseIdentifier @ CallTableCell autorelease self fetchedResultsController self fetchedResultsControllerForTableView theTableView configureCell cell atIndexPath theIndexPath return cell NSInteger numberOfSectionsInTableView.. Other view information void loadView super loadView UISearchBar searchBar UISearchBar alloc initWithFrame CGRectMake 0 0 self.tableView.frame.size.width 44.0 autorelease searchBar.autoresizingMask UIViewAutoresizingFlexibleWidth searchBar.autocorrectionType UITextAutocorrectionTypeNo self.tableView.tableHeaderView searchBar self.mySearchDisplayController.. self.tableView.tableHeaderView searchBar self.mySearchDisplayController UISearchDisplayController alloc initWithSearchBar searchBar contentsController self autorelease self.mySearchDisplayController.delegate self self.mySearchDisplayController.searchResultsDataSource self self.mySearchDisplayController.searchResultsDelegate self..
Understanding reference counting with Cocoa and Objective-C http://stackoverflow.com/questions/6578/understanding-reference-counting-with-cocoa-and-objective-c counting scheme has me rather confused. I'm told it's very elegant once you understand it but I'm just not over the hump yet. How do release retain and autorelease work and what are the conventions about their use Or failing that what did you read which helped you get it iphone objective c cocoa memory share improve this.. Or failing that what did you read which helped you get it iphone objective c cocoa memory share improve this question Let's start with retain and release autorelease is really just a special case once you understand the basic concepts. In Cocoa each object keeps track of how many times it is being referenced specifically the.. Ref count is 1 s retain Ref count is 2 silly to do this after init s release Ref count is back to 1 s release Ref count is 0 object is freed Now for autorelease . Autorelease is used as a convenient and sometimes necessary way to tell the system to free this object up after a little while. From a plumbing perspective when..
Objective C HTML escape/unescape http://stackoverflow.com/questions/659602/objective-c-html-escape-unescape @ d @ d s NSData data xmlStr dataUsingEncoding NSUTF8StringEncoding allowLossyConversion YES NSXMLParser xmlParse NSXMLParser alloc initWithData data autorelease xmlParse setDelegate self xmlParse parse return NSString stringWithFormat @ @ resultString void dealloc resultString release super dealloc @end share improve..
iPhone Data Usage Tracking/Monitoring http://stackoverflow.com/questions/7946699/iphone-data-usage-tracking-monitoring ifaddrs cursor const struct if_data networkStatisc int WiFiSent 0 int WiFiReceived 0 int WWANSent 0 int WWANReceived 0 NSString name NSString alloc init autorelease success getifaddrs addrs 0 if success cursor addrs while cursor NULL name NSString stringWithFormat @ s cursor ifa_name NSLog @ ifa_name s @ n cursor ifa_name..
File Upload to HTTP server in iphone programming http://stackoverflow.com/questions/936855/file-upload-to-http-server-in-iphone-programming You also need minor knowledge of PHP. NSString urlString @ http yourserver.com upload.php NSString filename @ filename request NSMutableURLRequest alloc init autorelease request setURL NSURL URLWithString urlString request setHTTPMethod @ POST NSString boundary @ 14737809831466499882746641449 NSString contentType NSString stringWithFormat..
How can I upload a photo to a server with the iPhone? http://stackoverflow.com/questions/125306/how-can-i-upload-a-photo-to-a-server-with-the-iphone NSLog @ s self 0x p n __func__ self NSString reply NSString alloc initWithData data encoding NSUTF8StringEncoding autorelease NSLog @ s data s n __func__ reply UTF8String if reply hasPrefix @ YES uploadDidSucceed YES @end Usage EPUploader alloc initWithURL..
AES Encryption for an NSString on the iPhone http://stackoverflow.com/questions/1400246/aes-encryption-for-an-nsstring-on-the-iphone NSString key return NSString alloc initWithData ciphertext AES256DecryptWithKey key encoding NSUTF8StringEncoding autorelease This definitely works on Snow Leopard and @Boz reports that CommonCrypto is part of the Core OS on the iPhone. Both 10.4..
EXC_BAD_ACCESS signal received http://stackoverflow.com/questions/327082/exc-bad-access-signal-received back from just about anything else including factory methods e.g. NSString stringWithFormat then you'll have an autorelease reference which means it could be released at some time in the future by other code so it is vital that if you need to keep..
display image from URL retrieved from ALAsset in iPhone http://stackoverflow.com/questions/3837115/display-image-from-url-retrieved-from-alasset-in-iphone if cell nil cell UITableViewCell alloc initWithStyle UITableViewCellStyleDefault reuseIdentifier CellIdentifier autorelease here 'asset' represents the ALAsset object asset assets objectAtIndex indexPath.row i am accessing the thumbnail here cell.imageView.. release NSURL asseturl NSURL URLWithString mediaurl ALAssetsLibrary assetslibrary ALAssetsLibrary alloc init autorelease assetslibrary assetForURL asseturl resultBlock resultblock failureBlock failureblock A couple of things to note are that..
How to filter NSFetchedResultsController (CoreData) with UISearchDisplayController/UISearchBar http://stackoverflow.com/questions/4471289/how-to-filter-nsfetchedresultscontroller-coredata-with-uisearchdisplaycontroll if cell nil cell CallTableCell alloc initWithStyle UITableViewCellStyleDefault reuseIdentifier @ CallTableCell autorelease self fetchedResultsController self fetchedResultsControllerForTableView theTableView configureCell cell atIndexPath theIndexPath.. loadView UISearchBar searchBar UISearchBar alloc initWithFrame CGRectMake 0 0 self.tableView.frame.size.width 44.0 autorelease searchBar.autoresizingMask UIViewAutoresizingFlexibleWidth searchBar.autocorrectionType UITextAutocorrectionTypeNo self.tableView.tableHeaderView.. self.mySearchDisplayController UISearchDisplayController alloc initWithSearchBar searchBar contentsController self autorelease self.mySearchDisplayController.delegate self self.mySearchDisplayController.searchResultsDataSource self self.mySearchDisplayController.searchResultsDelegate..
Understanding reference counting with Cocoa and Objective-C http://stackoverflow.com/questions/6578/understanding-reference-counting-with-cocoa-and-objective-c I'm told it's very elegant once you understand it but I'm just not over the hump yet. How do release retain and autorelease work and what are the conventions about their use Or failing that what did you read which helped you get it iphone objective.. helped you get it iphone objective c cocoa memory share improve this question Let's start with retain and release autorelease is really just a special case once you understand the basic concepts. In Cocoa each object keeps track of how many times.. 2 silly to do this after init s release Ref count is back to 1 s release Ref count is 0 object is freed Now for autorelease . Autorelease is used as a convenient and sometimes necessary way to tell the system to free this object up after a little..
Objective C HTML escape/unescape http://stackoverflow.com/questions/659602/objective-c-html-escape-unescape NSUTF8StringEncoding allowLossyConversion YES NSXMLParser xmlParse NSXMLParser alloc initWithData data autorelease xmlParse setDelegate self xmlParse parse return NSString stringWithFormat @ @ resultString void dealloc resultString release..
iPhone Data Usage Tracking/Monitoring http://stackoverflow.com/questions/7946699/iphone-data-usage-tracking-monitoring networkStatisc int WiFiSent 0 int WiFiReceived 0 int WWANSent 0 int WWANReceived 0 NSString name NSString alloc init autorelease success getifaddrs addrs 0 if success cursor addrs while cursor NULL name NSString stringWithFormat @ s cursor ifa_name..
File Upload to HTTP server in iphone programming http://stackoverflow.com/questions/936855/file-upload-to-http-server-in-iphone-programming urlString @ http yourserver.com upload.php NSString filename @ filename request NSMutableURLRequest alloc init autorelease request setURL NSURL URLWithString urlString request setHTTPMethod @ POST NSString boundary @ 14737809831466499882746641449..
To Autorelease or Not to Autorelease http://stackoverflow.com/questions/2165619/to-autorelease-or-not-to-autorelease Autorelease or Not to Autorelease In the following code example from the Core Data Programming Guide NSFetchRequest is created with.. Autorelease or Not to Autorelease In the following code example from the Core Data Programming Guide NSFetchRequest is created with autorelease while NSSortDescriptor..
IPhone SDK - Leaking Memory with performSelectorInBackground http://stackoverflow.com/questions/2441856/iphone-sdk-leaking-memory-with-performselectorinbackground be rejected from appstore. In your example as you run your method in separate thread you should create and dispose NSAutoreleasePool object for that thread to handle autoreleased objects. Following changes to getController method should do the trick.. to handle autoreleased objects. Following changes to getController method should do the trick void getController NSAutoreleasedPool pool NSAutoreleasedPool alloc init self.workController loadList Does the DB Query self.navigationController pushViewController.. objects. Following changes to getController method should do the trick void getController NSAutoreleasedPool pool NSAutoreleasedPool alloc init self.workController loadList Does the DB Query self.navigationController pushViewController self.workController..
http://stackoverflow.com/questions/2776494/autorelease-vs-release vs. Release Given the two scenarios which code is best practice and why Autorelease loginButton UIBarButtonItem alloc initWithTitle.. vs. Release Given the two scenarios which code is best practice and why Autorelease loginButton UIBarButtonItem alloc initWithTitle @ Login style UIBarButtonItemStylePlain target self action @selector..
http://stackoverflow.com/questions/429524/autorelease-iphone iPhone Coming up towards the end of developing an iPhone application and I'm wondering just how bad is it to use autorelease..
iPhone Development - Lessons in memory management http://stackoverflow.com/questions/464908/iphone-development-lessons-in-memory-management objects don't actually get released and the memory is wired. How can I get rid of these objects How can I tell the NSAutoreleasePool to periodically release the objects that are not being used I think this can help me get rid of wired memory. But can.. required and then releasing the pool at the end of the block. And voila and objects in the pool are also released. Autorelease pools nest so keep that in mind if you do this. If you release an autorelease pool make sure it's the most recently allocated..
Releasing renderInContext result within a loop http://stackoverflow.com/questions/4970627/releasing-renderincontext-result-within-a-loop renderInContext result within a loop I have a method which is called in a loop that looks something like this NSAutoreleasePool pool NSAutoreleasePool alloc init UIImageView background UIImageView alloc initWithFrame CGRectMake 0 0 PAGE_WIDTH PAGE_HEIGHT.. within a loop I have a method which is called in a loop that looks something like this NSAutoreleasePool pool NSAutoreleasePool alloc init UIImageView background UIImageView alloc initWithFrame CGRectMake 0 0 PAGE_WIDTH PAGE_HEIGHT background.image.. the memory does not spike but is allocated and reduces on every iteration of the loop as I would expect due to the Autorelease pool. It doesn't crash And if I just comment out the renderInContext line it works fine. Doesn't crash So it looks as if..
If you have an IBOutlet, but not a property, is it retained or not? http://stackoverflow.com/questions/5523290/if-you-have-an-iboutlet-but-not-a-property-is-it-retained-or-not fact apparently adds one retain . I can only assume from the shoddy docu in that situation you get specifically Retain Autorelease Retain leading to one retain on balance. So that's the answer. I will post the demo project. I also direct any readers to..
http://stackoverflow.com/questions/5860639/autorelease-for-beginners for beginners I found this very useful definition here When you autorelease you're basically saying I don't need this any.. the sender to take care of releasing the object. However I am still wondering what the second paragraph means. Autorelease is not normally the wrong thing to do... I thought it's really memory intensive so it should naturally be the wrong thing.. can easily remember Thanks for any suggestions. iphone objective c cocoa touch share improve this question Autorelease is not normally the wrong thing to do... I thought it's really memory intensive so it should naturally be the wrong thing..
Understanding reference counting with Cocoa and Objective-C http://stackoverflow.com/questions/6578/understanding-reference-counting-with-cocoa-and-objective-c do this after init s release Ref count is back to 1 s release Ref count is 0 object is freed Now for autorelease . Autorelease is used as a convenient and sometimes necessary way to tell the system to free this object up after a little while. From.. this object up after a little while. From a plumbing perspective when autorelease is called the current thread's NSAutoreleasePool is alerted of the call. The NSAutoreleasePool now knows that once it gets an opportunity after the current iteration.. a plumbing perspective when autorelease is called the current thread's NSAutoreleasePool is alerted of the call. The NSAutoreleasePool now knows that once it gets an opportunity after the current iteration of the event loop it can call release on the..
What's the difference between sending -release or -drain to an Autorelease Pool? http://stackoverflow.com/questions/797419/whats-the-difference-between-sending-release-or-drain-to-an-autorelease-pool the difference between sending release or drain to an Autorelease Pool In many Books and on many Sites I see drain. Well for an Autorelease Pool that sounds cool. But does it do anything.. between sending release or drain to an Autorelease Pool In many Books and on many Sites I see drain. Well for an Autorelease Pool that sounds cool. But does it do anything other than an release I would guess drain just makes the Pool to release.. share improve this question Note that the comments on oxigen's answer saying that drain does not release the NSAutoreleasePool are not correct. The documentation for NSAutoreleasePool clearly says that drain releases and thus destroys the NSAutoreleasePool...
Objective c, Memory management of instance members http://stackoverflow.com/questions/8576593/objective-c-memory-management-of-instance-members @ DetailedResultsMapViewController bundle nil self.detailedResultsMapViewController vc vc release vc nil Or use Autorelease self.detailedResultsMapViewController DetailedResultsMapViewController alloc initWithNibName @ DetailedResultsMapViewController..
Memory management and performSelectorInBackground: http://stackoverflow.com/questions/873200/memory-management-and-performselectorinbackground @ a @ b nil autorelease bar performSelectorInBackground @selector baz withObject foo void baz NSArray foo NSAutoreleasePool pool NSAutoreleasePool alloc init ... pool release I know the first one works but Clang complains about it so I wonder.. autorelease bar performSelectorInBackground @selector baz withObject foo void baz NSArray foo NSAutoreleasePool pool NSAutoreleasePool alloc init ... pool release I know the first one works but Clang complains about it so I wonder if there's a better.. withObject take care of the rest. See documentation Latter is correct because you autorelease foo when you create it. Autorelease pool that you create inside baz has nothing do with correctness of foo's memory management. That autorelease pool is needed..
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