iOS UIView快速添加事件

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本文介绍了一种在iOS开发中为UIView添加Tap手势的方法。通过创建一个类别UIView+SKTap，实现了自定义TapBlock属性及添加Tap手势的功能。具体实现包括设置TapBlock，添加Tap手势并执行回调。

//
// UIView+SKTap.h
// MeiGouYouPin
//
// Created by coder on 2019/10/29.
// Copyright © 2019 AlexanderYeah. All rights reserved.
//

#import <UIKit/UIKit.h>

NS_ASSUME_NONNULL_BEGIN

typedef void(^TapBlock)(void);

@interface UIView (SKTap)

@property (copy,nonatomic)TapBlock TapBlk;

@end

NS_ASSUME_NONNULL_END

//
// UIView+SKTap.m
// MeiGouYouPin
//
// Created by coder on 2019/10/29.
// Copyright © 2019 AlexanderYeah. All rights reserved.
//

#import “UIView+SKTap.h”
#import <objc/runtime.h>

const char *blockKey = “blk”;

@implementation UIView (SKTap)

(void)setTapBlock:(TapBlock)tapBlock {
objc_setAssociatedObject(self, &blockKey, tapBlock, OBJC_ASSOCIATION_COPY_NONATOMIC);
}
(TapBlock)tapBlock {
return objc_getAssociatedObject(self, &blockKey);
}
(void)sk_addTap:(TapBlock)block
{

self.tapBlock = block; // 把block赋值给self.tapBlock, 可以在当前函数之外执行该回调
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapGes)];
[self addGestureRecognizer:tap];
}
(void)tapGes {
if (self.tapBlock) {
self.tapBlock(); // 执行回调
}
}