UIControl+Blocks.h

#import <UIKit/UIKit.h>

@interface UIControl (Blocks)
- (void)setActionForControlEvents:(UIControlEvents)controlEvents withBlock:(void (^)(id))aBlock;
@end

UIControl+Blocks.m

#import "UIControl+Blocks.h"
#import "OTAssociatedObjectsSimulator.h" // hack to let sim use associated objects

IMP executeBlockWithControlEvents(id self, SEL _cmd, id sender);
static NSString * const kUIControlAssociatedObjectBlockPrefix = @"__actionblockforevents_";

@implementation UIControl (Blocks)

- (void)setActionForControlEvents:(UIControlEvents)controlEvents withBlock:(void (^)(id))aBlock {
  SEL key = NSSelectorFromString([kUIControlAssociatedObjectBlockPrefix stringByAppendingFormat:@"%i",controlEvents]);
	
  class_addMethod([self class], key, (IMP)executeBlockWithControlEvents, "@@:@");
  objc_setAssociatedObject(self, key, [[aBlock copy] autorelease], OBJC_ASSOCIATION_RETAIN_NONATOMIC);
	
  [self addTarget:self action:key forControlEvents:controlEvents];
}

@end

IMP executeBlockWithControlEvents(id self, SEL _cmd, id sender) {	
  void (^block)(id) = objc_getAssociatedObject(self, _cmd);
  if (block) { block(sender); }
  
  return nil;
}