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2014/10/15 ¤U¤È 10:04:19
iphone Programming Glossary: autoreleasedhttp://stackoverflow.com/questions/1298867/convert-image-to-grayscale image CGImageRelease image free m_imageData make sure the data will be released by giving it to an autoreleased NSData NSData dataWithBytesNoCopy result length m_width m_height return resultUIImage share improve..
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 to anything other than the main queue In my limited testing I don't see the console warnings for autoreleased objects that you normally see with background threads or NSOperations. However I can't seem to find..
Difference between [NSMutableArray array] vs [[NSMutableArray alloc] init] http://stackoverflow.com/questions/5423211/difference-between-nsmutablearray-array-vs-nsmutablearray-alloc-init cases when you create an object on iOS where you have a choice between obtaining a ready made autoreleased object and calling alloc followed by release Apple wants you to use alloc and release because this keeps.. this keeps the lifetime of the object short and under your control. The problem here is that autoreleased objects live in the autorelease pool and can pile up until the pool is drained whenever that may be... pool is drained whenever that may be. Another thing to watch out for is loops. You may generate autoreleased objects without being aware of it and they just pile up in the pool. The solution is to create your..
Understanding reference counting with Cocoa and Objective-C http://stackoverflow.com/questions/6578/understanding-reference-counting-with-cocoa-and-objective-c . What's important to note is that again by convention all object creation class methods return an autoreleased object. For example in the following example the variable s has a reference count of 1 but after the..
http://stackoverflow.com/questions/1298867/convert-image-to-grayscale
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 to create an NSAutoreleasePool within each block you dispatch to anything other than the main queue In my limited testing I don't see the console warnings for autoreleased objects that you normally see with background threads or NSOperations. However I can't seem to find definitive documentation on this so I was wondering if someone..
Difference between [NSMutableArray array] vs [[NSMutableArray alloc] init] http://stackoverflow.com/questions/5423211/difference-between-nsmutablearray-array-vs-nsmutablearray-alloc-init That is exactly correct when you vend an object. But in other cases when you create an object on iOS where you have a choice between obtaining a ready made autoreleased object and calling alloc followed by release Apple wants you to use alloc and release because this keeps the lifetime of the object short and under your control... by release Apple wants you to use alloc and release because this keeps the lifetime of the object short and under your control. The problem here is that autoreleased objects live in the autorelease pool and can pile up until the pool is drained whenever that may be. Another thing to watch out for is loops. You may generate autoreleased.. objects live in the autorelease pool and can pile up until the pool is drained whenever that may be. Another thing to watch out for is loops. You may generate autoreleased objects without being aware of it and they just pile up in the pool. The solution is to create your own autorelease pool at the start of the loop and release it..
Understanding reference counting with Cocoa and Objective-C http://stackoverflow.com/questions/6578/understanding-reference-counting-with-cocoa-and-objective-c release for us so we don't have to and in fact we shouldn't . What's important to note is that again by convention all object creation class methods return an autoreleased object. For example in the following example the variable s has a reference count of 1 but after the event loop completes it will be destroyed. NSString s NSString..
What happens if I don't retain IBOutlet? http://stackoverflow.com/questions/1250518/what-happens-if-i-dont-retain-iboutlet you could do so. Using the property makes memory management more clear here you just set the property with a new autoreleased text field. If you had not used the property you must remember to release it and optionally retain the new one. At this..
http://stackoverflow.com/questions/1298867/convert-image-to-grayscale
http://stackoverflow.com/questions/2035421/creating-nsdecimal using the following technique NSNumber numberWithFloat kFloatConstant decimalValue I am using NSDecimal to avoid using autoreleased NSDecimalNumber objects if the NSDecimalNumber approach to accurate calculations is used . However it seems that the NSNumber.. approach to accurate calculations is used . However it seems that the NSNumber creation mechanism also returns an autoreleased NSNumber from which the decimal value is extracted. Is there a way to create an NSDecimal without using NSNumber and creating.. from which the decimal value is extracted. Is there a way to create an NSDecimal without using NSNumber and creating autoreleased objets iphone objective c autorelease share improve this question Unfortunately Apple does not provide any easy ways..
Understanding the memory consumption on iPhone http://stackoverflow.com/questions/363493/understanding-the-memory-consumption-on-iphone I would do Check that you're not leaking memory this will obviously cause this problem. Ensure your'e not accessing autoreleased memory common cause of crashes. Create a separate test app and play with loading textures individually and in combination..
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 block you dispatch to anything other than the main queue In my limited testing I don't see the console warnings for autoreleased objects that you normally see with background threads or NSOperations. However I can't seem to find definitive documentation..
(iphone) UIImageView setImage: leaks? http://stackoverflow.com/questions/4644912/iphone-uiimageview-setimage-leaks never leaks unless the image you are passing doesn't get released. Your code wont leak if your are assigning an autoreleased image to the image view something like the following. UIImage newImage UIImage imageNamed @ sampleImage yourImageView setImage..
Setting up a plist to store application data (not settings) for an iPhone game http://stackoverflow.com/questions/4911688/setting-up-a-plist-to-store-application-data-not-settings-for-an-iphone-game pathForResource @ config ofType @ plist Your root object is an array of levels. Load it in a NSArray. this is autoreleased. you can retain it if needed NSArray levelArray NSArray arrayWithContentsOfFile plistPath Now you have the array of levels...
Difference between [NSMutableArray array] vs [[NSMutableArray alloc] init] http://stackoverflow.com/questions/5423211/difference-between-nsmutablearray-array-vs-nsmutablearray-alloc-init an object. But in other cases when you create an object on iOS where you have a choice between obtaining a ready made autoreleased object and calling alloc followed by release Apple wants you to use alloc and release because this keeps the lifetime of.. alloc and release because this keeps the lifetime of the object short and under your control. The problem here is that autoreleased objects live in the autorelease pool and can pile up until the pool is drained whenever that may be. Another thing to watch.. can pile up until the pool is drained whenever that may be. Another thing to watch out for is loops. You may generate autoreleased objects without being aware of it and they just pile up in the pool. The solution is to create your own autorelease pool..
iOS Low Memory Crash, but very low memory usage http://stackoverflow.com/questions/5980636/ios-low-memory-crash-but-very-low-memory-usage 2011 05 12 160645.plist using uid 0 gid 0 synthetic_euid 0 egid 0 I have removed all calls to imageNamed changed autoreleased stuff to alloc release. But I cannot work out why this is happening and it's driving me insane. Thanks for any help iphone..
When does an associated object get released? http://stackoverflow.com/questions/6039309/when-does-an-associated-object-get-released after object A with OBJC_ASSOCIATION_RETAIN Do associated objects get released after deallocation Do they get autoreleased Does anyone know of a way to alter this behavior I'm trying to add some things to a class through categories so I can't..
Understanding reference counting with Cocoa and Objective-C http://stackoverflow.com/questions/6578/understanding-reference-counting-with-cocoa-and-objective-c fact we shouldn't . What's important to note is that again by convention all object creation class methods return an autoreleased object. For example in the following example the variable s has a reference count of 1 but after the event loop completes..
Objective C alloc/release error http://stackoverflow.com/questions/6928028/objective-c-alloc-release-error theXML release You alloc a string replace that variable with the stringByReplacing... call with a string that is autoreleased then try to release the resulting string that is autoreleased which will crash. When you don't need to keep a string around.. with the stringByReplacing... call with a string that is autoreleased then try to release the resulting string that is autoreleased which will crash. When you don't need to keep a string around after the method you are in ALWAYS use autorelease. The correct..
Where are the best explanations of memory management for iPhone? [closed] http://stackoverflow.com/questions/710288/where-are-the-best-explanations-of-memory-management-for-iphone
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