UIScrollView 中的 UIButton 触摸延迟-移动开发问题

UIButton touch is delayed when in UIScrollView(UIScrollView 中的 UIButton 触摸延迟)

本文介绍了UIScrollView 中的 UIButton 触摸延迟的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我的应用遇到了一个小问题.

I'm running into a small issue in my app.

我本质上在 UIScrollView 中添加了一系列 UIButtons 作为子视图，该 UIScrollView 是 nib 的一部分.每次我点击一个按钮时，在按钮被突出显示之前都会有一个明显的延迟.在按钮变暗并显示为选中之前，我基本上必须按住它大约半秒钟.


I essentially have a series of UIButtons added as subviews in a UIScrollView which is part of a nib. Every time I tap on a button there is a noticeable delay before the button is highlighted. I essentially have to hold it for about half a second before the button dims and appears selected.
我假设这是因为 UIScrollView 需要确定触摸是滚动还是用于子视图的触摸.
I'm assuming this is because the UIScrollView needs to determine if the touch is a scroll or if it's a touch that is meant for a subview.
无论如何，我有点不确定如何进行.我只是希望按钮在我点击后立即显示为选中状态.
Anyways, I'm a little unsure on how to proceed. I simply want the button to appear selected as soon as I tap it.
感谢任何帮助！

我尝试将 delaysContentTouches 设置为 NO，但滚动几乎变得不可能，因为我的大部分 scrollView 都充满了 UIButtons.p>

I've tried setting delaysContentTouches to NO but scrolling becomes almost impossible since a majority of my scrollView is filled with UIButtons.

推荐答案

好的，我已经通过继承 UIScrollView 并覆盖 touchesShouldCancelInContentView

Ok I've solved this by subclassing UIScrollView and overriding touchesShouldCancelInContentView

现在我的 UIButton 被正确标记为 99 高亮并且我的滚动视图正在滚动！

Now my UIButton that was tagged as 99 highlights properly and my scrollview is scrolling!

myCustomScrollView.h:

@interface myCustomScrollView : UIScrollView  {

}

@end

和myCustomScrollView.m:

@implementation myCustomScrollView

    - (BOOL)touchesShouldCancelInContentView:(UIView *)view
    {
        NSLog(@"touchesShouldCancelInContentView");

        if (view.tag == 99)
            return NO;
        else 
            return YES;
    }

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