UIButton+Block分类代替addTarget实现快捷监听按钮点击

[_button addTarget:self action:@selector(didTapButton:) forControlEvents:UIControlEventTouchUpInside];

#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

__weak typeof (self)weakSelf = self;
[footer.button addAction:^(UIButton *btn) {
WTAddressControlViewController *vc = [[WTAddressControlViewController alloc] initWithViewControllerType:WTAddressControlTypeAdd];
vc.popBlock = ^(){
[weakSelf loadData];
};
[weakSelf.navigationController pushViewController:vc animated:YES];
}];