问题描述
我正在实现 UIButton 并且我的 UIControlEventTouchUpInside 事件不会触发，即使 UIControlEventTouchDown 会触发。
I am implementing UIButton and my UIControlEventTouchUpInside event does not fire, even though UIControlEventTouchDown does fire.
UIButton *btnClose = [UIButton buttonWithType:UIButtonTypeCustom];
NSString *filePathImage = @"img.png";
NSString *filePathImageTap = @"img-tap.png";
UIImage *buttonImage = [UIImage imageWithContentsOfFile:filePathImage];
UIImage *buttonImageTap = [UIImage imageWithContentsOfFile:filePathImageTap];
[btnClose setImage:buttonImage forState:UIControlStateNormal];
[btnClose setImage:buttonImageTap forState:UIControlStateSelected];
[btnClose setImage:buttonImageTap forState:UIControlStateHighlighted];
[btnClose addTarget:self action:@selector(close:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:btnClose];
推荐答案
我假设为什么不采取 UIControlEventTouchUpInside ：
我在两个不同的ViewControllers中有两个BannerView（广告）。在其中一个它只是在另一个工作正常，我看到如何触摸 UIButton ，并出现第二个图像（较暗）。但选择器没有被击中。然后我意识到， Up -Event是从 UIImageView UISwipeGestureRecognizer 吸收的/ code>下面。一些识别器互相竞争。我搜索了一个概述，看看这些是什么，但一无所获。
I had two "BannerView" (Advertisement) in two different ViewControllers. In one it just worked fine in the other I saw how the UIButton was touched and the second image (darker) appeared. But the selector was not hit. Then I realized, that the Up-Event was absorbt by a UISwipeGestureRecognizer from a UIImageView below. Some Recognizer compete against each other. I searched for an overview to see witch ones these are, but found nothing.
另一个解决方案：
如果你看到ButtonState没有改变你有查看你的按钮是否有查看。
Another solution:If you see that the ButtonState doesn't change u have to look if you have a View over your Button.
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