iOS 用UIScrollView不能获取到touchesBegan

2022-09-15 10:20:26 浏览数 (1)

大家好，又见面了，我是你们的朋友全栈君。

网上查了一下原来UIScrollView是没有继承touchesBegan方法的所以要自己重写UIScrollView 然后继承

touchesBegan 等方法才可以用

重写

UIScrollView很简单

代码下

// myScrollView.h

// WFClient

// Created by 屎壳郎情调 on 13-8-23.

#import <UIKit/UIKit.h>

@interface myScrollView : UIScrollView

@end

// myScrollView.m

// WFClient

// Created by 屎壳郎情调 on 13-8-23.

#import “myScrollView.h”

@implementation myScrollView

– (id)initWithFrame:(CGRect)frame

{

self = [super initWithFrame:frame];

if (self) {

// Initialization code

}

return self;

}

-(void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{

[super touchesBegan:touches withEvent:event];

//做你想要的操作

}

-(void) touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event{

[super touchesEnded:touches withEvent:event];

//做你想要的操作

}

// Only override drawRect: if you perform custom drawing.

// An empty implementation adversely affects performance during animation.

– (void)drawRect:(CGRect)rect

{

// Drawing code

}

@end

使用的时候很简单直接

//滚动视图

myScrollView *scrollView= [[myScrollView alloc] initWithFrame: CGRectMake( 0, 0, 320, 460)];

用法和UIScrollView 都是一样的

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