UIImageView 内的 UIButton 不响应点击

UIButton inside UIImageView does not respond to taps(UIImageView 内的 UIButton 不响应点击)

问题描述

我有一个滚动视图，它有一个带有图像作为子视图的图像视图，并且图像视图有一个 UIButton 作为其子视图之一.问题是，我无法点击按钮.我可以看到按钮，但我无法点击它.

I have a scroll view, which has an image view with an image as a subview, and the image view has a UIButton as one of its subviews. The problem is, I am not able to click on the button. I can SEE the button, but I cannot tap on it.

谁能告诉我我搞砸了什么?任何帮助是极大的赞赏！谢谢！

Can someone tell me what is it that I am messing up? Any help is greatly appreciated! Thanks!

下面是代码:

scrollView = [[UIScrollView alloc] initWithFrame:[[UIScreen mainScreen] applicationFrame]];    
imageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"img.jpg"]];
scrollView.delegate = self;
self.view = scrollView;

// add invisible buttons
[self addInvisibleButtons];
[scrollView addSubview:imageView];

addInvisibleButtons 有如下代码:

UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[button addTarget:self action:@selector(buttonHandler) forControlEvents:UIControlEventAllEvents];
[button setTitle:@"point" forState:UIControlStateNormal];
button.frame = CGRectMake(0.0, 0.0, 40.0, 40.0);
[self.imageView addSubview:button];

推荐答案

UIImageView 已将 userInteractionEnabled 设置为 NO/false 默认情况下.

UIImageView has userInteractionEnabled set to NO/ false by default.

您正在将按钮作为子视图添加到图像视图.您应该将其设置为 YES/true.

You are adding the button as a subview to the image view. You should set it to YES / true.

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