UIButton里面的UIImageView不响应tap [英] UIButton inside UIImageView does not respond to taps

问题描述

我有一个滚动视图，它有一个图像视图和一个图像作为子视图，图像视图有一个 UIButton 作为其子视图之一。问题是，我不能点击按钮。我可以看到按钮，但我不能点击它。

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.

有人能告诉我这是什么，我在搞乱？任何帮助，非常感谢！

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 具有以下代码： p>

addInvisibleButtons has the following code:

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 有 userInteractionEnabled 设置为 NO / false 默认。

UIImageView has userInteractionEnabled set to NO/ false by default.

您要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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