UITapGestureRecognizer和UIButton的点击事件冲突的解决办法

转载地址 http://blog.csdn.net/numbbuaa/article/details/8677762
视图view上有一个UIButton实例btn，绑定了一个点击事件的响应方法buttonClicked：，由于某种需要（如点击空白区域收起键盘），为view添加了UITapGestureRecognizer手势，关键代码如下：

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UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(resignRespond)];

[self.view addGestureRecognizer:tap];

[tap release];

运行，点击按钮btn的时候，方法buttonClicked：未调用，调用的是UITapGestureRecognizer手势的回调方法resignRespond。也就是说UIButton的点击事件被UITapGestureRecognizer截获了，两者相互冲突。

解决方法：

设置UITapGestureRecognizer的代理，然后在协议方法中作判断，主要代码如下：

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UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(resignRespond)];

tap.delegate = self;

[self.view addGestureRecognizer:tap];

[tap release];

UITapGestureRecognizer协议方法：

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- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch

{

if ([touch.view isKindOfClass:[UIButton class]])

{

return NO;

}

return YES;

}