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A macro for dynamic properties in categories
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| // | |
| // Dynamic properties in categories | |
| // | |
| // @see http://www.davidhamrick.com/2012/05/28/Adding-Properties-to-an-Objective-C-Category-Revisted.html | |
| // @see https://twitter.com/nicklockwood/status/384088702768922625 | |
| // @see http://www.tuaw.com/2013/04/10/devjuice-better-objective-c-associated-objects/ | |
| // @see http://stackoverflow.com/questions/16020918/avoid-extra-static-variables-for-associated-objects-keys | |
| // | |
| // Remember to add #import <objc/runtime.h> in implementation. | |
| // | |
| #define ADD_DYNAMIC_PROPERTY(PROPERTY_TYPE, PROPERTY_NAME, SETTER_NAME) \ | |
| @dynamic PROPERTY_NAME; \ | |
| - ( PROPERTY_TYPE ) PROPERTY_NAME \ | |
| { \ | |
| return ( PROPERTY_TYPE ) objc_getAssociatedObject(self, @selector(PROPERTY_NAME) ); \ | |
| } \ | |
| \ | |
| - (void) SETTER_NAME :( PROPERTY_TYPE ) PROPERTY_NAME \ | |
| { \ | |
| objc_setAssociatedObject(self, @selector(PROPERTY_NAME), PROPERTY_NAME, OBJC_ASSOCIATION_RETAIN); \ | |
| } \ |
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