オレオレ属性をボタンなどに追加する

UIControl+oreProperty.h

//
//  Created by azu on 11/11/10.


#import <Foundation/Foundation.h>

@interface UIControl (oreProperty)

@property(nonatomic, retain) NSString *altAccessibilityHint;

@end

UIControl+oreProperty.m

//
//  Created by azu on 11/11/10.


#import <objc/runtime.h>
#import "UIControl+oreProperty.h"


@implementation UIControl (oreProperty)

static char UIB_PROPERTY_KEY;
@dynamic altAccessibilityHint;

- (void)setAltAccessibilityHint:(NSString *)value {
    objc_setAssociatedObject(self, &UIB_PROPERTY_KEY, value, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}

- (NSString *)altAccessibilityHint {
    return (NSString *) objc_getAssociatedObject(self, &UIB_PROPERTY_KEY);
}

@end