【OC】给UIView、UILabel、UIImageView等等继承UIView的控件添加点击功能

最新推荐文章于 2025-05-26 11:07:14 发布

原创最新推荐文章于 2025-05-26 11:07:14 发布 · 733 阅读

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#UIView点击事件

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本文介绍了一个iOS自定义UIView类别扩展方法，通过该方法可以为UIView添加点击事件处理，并提供了从UIView获取所在UIViewController的方法。实现了点击事件的响应与处理逻辑。

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#import <UIKit/UIKit.h>
typedef void(^actionBlock)(void);

@interface UIView (UIViewController)

/**
 得到View所在的控制器

 @return 控制器
 */
- (UIViewController *)viewController;

/**
 给View添加点击事件

 @param block 事件传递
 */
- (void)tapActionGesture:(actionBlock)block;
@end

#import "UIView+UIViewController.h"

NSMutableDictionary *blockActionDict;



@interface UIView ()
@end
@implementation UIView (UIViewController)

- (UIViewController *)viewController {
    //通过响应者链，取得此视图所在的视图控制器
    UIResponder *next = self.nextResponder;

    do {

        //判断响应者对象是否是视图控制器类型
        if ([next isKindOfClass:[UIViewController class]]) {
            return (UIViewController *)next;
        }

        next = next.nextResponder;

    }while(next != nil);

    return nil;
}
/**
 给View添加点击事件

 @param block 事件传递
 */
- (void)tapActionGesture:(actionBlock)block{
    [self addBlock:block];
    [self whenTouchOne];
}

-(void)addBlock:(actionBlock)block{
    if (blockActionDict == nil){
        blockActionDict = [[NSMutableDictionary alloc]init];
    }
    NSLog(@"%lu",(unsigned long)self.hash);
    blockActionDict[[NSString stringWithFormat:@"%lu",(unsigned long)self.hash]] = block;
}

-(void)whenTouchOne{
    UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc]init];
    tapGesture.numberOfTouchesRequired = 1;
    tapGesture.numberOfTapsRequired = 1;
    [tapGesture addTarget:self action:@selector(tapAction)];
    [self addGestureRecognizer:tapGesture];
}

-(void)tapAction{
    NSLog(@"%lu",(unsigned long)self.hash);
   actionBlock block = blockActionDict[[NSString stringWithFormat:@"%lu",(unsigned long)self.hash]];
    block();
}
@end