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2014/10/15 ¤U¤È 10:15:42
iphone Programming Glossary: valuewithpointerobjc_setAssociatedObject unavailable in iPhone simulator http://stackoverflow.com/questions/1916130/objc-setassociatedobject-unavailable-in-iphone-simulator @ Only OBJC_ASSOCIATION_RETAIN_NONATOMIC supported object otAssociatedObjectsDictionary setObject value forKey NSValue valueWithPointer key id objc_getAssociatedObject id object void key return object otAssociatedObjectsDictionary objectForKey NSValue valueWithPointer.. key id objc_getAssociatedObject id object void key return object otAssociatedObjectsDictionary objectForKey NSValue valueWithPointer key void objc_removeAssociatedObjects id object object otAssociatedObjectsDictionary removeAllObjects #endif share improve..
Store selector as value in an NSDictionary http://stackoverflow.com/questions/2822602/store-selector-as-value-in-an-nsdictionary a pointer which you could store in an NSValue NSDictionary dict NSDictionary dictionaryWithObjectsAndKeys NSValue valueWithPointer @selector foo @ foo nil To get the selector back you can use SEL aSel dict objectForKey @ foo pointerValue share improve..
What's the best way to put a c-struct in an NSArray? http://stackoverflow.com/questions/4516991/whats-the-best-way-to-put-a-c-struct-in-an-nsarray in an NSArray Advantages disadvantages memory handling Notably what's the difference between valueWithBytes and valueWithPointer raised by justin and catfish below. Here's a link to Apple's discussion of valueWithBytes objCType for future readers.....
How do you explicitly animate a CALayer's backgroundColor? http://stackoverflow.com/questions/518192/how-do-you-explicitly-animate-a-calayers-backgroundcolor animationWithKeyPath @ backgroundColor selectionAnimation setDuration 0.5f selectionAnimation setToValue NSValue valueWithPointer red layer addAnimation selectionAnimation forKey @ selectionAnimation seems to do nothing to the backgroundColor property..
http://stackoverflow.com/questions/5469886/nsarray-of-int comment. You can treat the static arrays as pointers and store them in NSValue objects mutableArray addObject NSValue valueWithPointer lvl1 ... int level NSValue mutableArray objectAtIndex whatever pointerValue int someContainedInt level index Alternatively..
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