把UIGestureRecognizer 中的点击事件变成Block
// // UIGestureRecognizer+Block.h // rrefwvenfo // // Created by 张凯泽 on 16/4/11. // Copyright © 2016年 rytong_zkz. All rights reserved. // #import <UIKit/UIKit.h> typedef void(^NVMGertureBlock)(id gesture); @interface UIGestureRecognizer (Block) +(instancetype)nvm_gestureRecongnizerWithActionBlock:(NVMGertureBlock)Block; -(instancetype)initWithActionBlock:(NVMGertureBlock)Block; @end
// // UIGestureRecognizer+Block.m // rrefwvenfo // // Created by 张凯泽 on 16/4/11. // Copyright © 2016年 rytong_zkz. All rights reserved. // #import <objc/message.h> #import "UIGestureRecognizer+Block.h" static const int target_key; @implementation UIGestureRecognizer (Block) +(instancetype)nvm_gestureRecongnizerWithActionBlock:(NVMGertureBlock)Block { return [[self alloc]initWithActionBlock:Block]; } -(instancetype)initWithActionBlock:(NVMGertureBlock)Block { self = [self init]; [self addActionBlock:Block]; [self addTarget:self action:@selector(invoke:)]; return self; } -(void)addActionBlock:(NVMGertureBlock)block { if (block) { objc_setAssociatedObject(self, &target_key, block, OBJC_ASSOCIATION_COPY_NONATOMIC); } } -(void)invoke:(id)sender { NVMGertureBlock block = objc_getAssociatedObject(self, &target_key); if (block) { block(sender); } } @end