UIButton UIControlEventTouchUpInside 不会触发，但 UIControlEventTouchDown 会触发
我正在实现 UIButton ，并且我的 UIControlEventTouchUpInside 事件没有触发，即使 UIControlEventTouchDown 确实触发了。
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];
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];
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我有一个假设，为什么它不采用
UIControlEventTouchUpInside：我在两个不同的 ViewController 中有两个“BannerView”（广告）。在一个中它工作得很好，在另一个中我看到了如何触摸
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事件被下面的UIImageView中的UISwipeGestureRecognizer吸收。一些识别器相互竞争。我搜索了概述以了解这些女巫，但一无所获。另一个解决方案：
如果您发现 ButtonState 没有改变，您必须查看 Button 上是否有视图。
I have an assumption why it doesn't take the
UIControlEventTouchUpInside:I had two "BannerView" (Advertisement) in two different ViewControllers. In one it just worked fine in the other I saw how the
UIButtonwas touched and the second image (darker) appeared. But the selector was not hit. Then I realized, that theUp-Event was absorbt by aUISwipeGestureRecognizerfrom aUIImageViewbelow. SomeRecognizercompete against each other. I searched for an overview to see witch ones these are, but found nothing.Another solution:
If you see that the ButtonState doesn't change u have to look if you have a View over your Button.