UIButton 在 UIScrollView 中不起作用

问题描述

我的观点结构:

UITableView
  UITableViewCell
    UIScrollView
      CustomView
        UIButton

问题是当我触摸 UIButton 时它不起作用.我用代码创建它:

The problem is UIButton doesn't work when I touch it. I create it with code:

btn = [[UIButton alloc] init];
[btn setImage:image forState:UIControlStateNormal];
[btn addTarget:self action:@selector(tileTouchUpInside) forControlEvents:UIControlEventTouchUpInside];
btn.layer.zPosition = 1;
[self addSubview:btn];

我也添加了这个:

scroll.delaysContentTouches = NO;
scroll.canCancelContentTouches = NO;

但我的按钮无论如何都不起作用.我无法为 UITableView 取消ContentTouches 或设置延迟，因为如果我设置它，UITableView 将停止垂直滚动.

But my button doesn't work anyway. I can't cancelContentTouches or set delay for UITableView because if I set it, UITableView stop scrolling verticaly.

感谢您的帮助！

推荐答案

创建UIScrollView的子类

Create a subclass of UIScrollView with

- (BOOL)touchesShouldCancelInContentView:(UIView *)view {
  return NO;
}

如果您没有收到该消息，请设置:

If you are not getting that message, set:

scrollView.delaysContentTouches = NO;

问题在于 touchesShouldCancelInContentView 默认的行为方式，仅当子视图是 UIControl 时它才返回 NO，但您的按钮隐藏在 CustomView 中，但不是.

The problem is because of the way touchesShouldCancelInContentView behaves by default, it returns NO only if the subview is an UIControl, but your button is hidden inside the CustomView which isn't.

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