#import <UIKit/UIKit.h>
typedef void(^ButtonBlock)(UIButton* btn);
@interface UIButton (Block)
- (void)addAction:(ButtonBlock)block;
- (void)addAction:(ButtonBlock)block forControlEvents:(UIControlEvents)controlEvents;
@end
#import "UIButton+Block.h"
#import <objc/runtime.h>
@implementation UIButton (Block)
static char ActionTag;
- (void)addAction:(ButtonBlock)block
{
objc_setAssociatedObject(self, &ActionTag, block, OBJC_ASSOCIATION_COPY_NONATOMIC);
[self addTarget:self action:@selector(action:) forControlEvents:UIControlEventTouchUpInside];
}
- (void)addAction:(ButtonBlock)block forControlEvents:(UIControlEvents)controlEvents
{
objc_setAssociatedObject(self, &ActionTag, block, OBJC_ASSOCIATION_COPY_NONATOMIC);
[self addTarget:self action:@selector(action:) forControlEvents:controlEvents];
}
- (void)action:(id)sender
{
ButtonBlock blockAction = (ButtonBlock)objc_getAssociatedObject(self, &ActionTag);
if (blockAction)
{
blockAction(self);
}
}
@end
只能用于一種evet下，如果為兩種evet使用會(huì)出現(xiàn)覆蓋熊尉，執(zhí)行后關(guān)聯(lián)的block
