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

问题描述：

       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：

    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：

    UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(resignRespond)];    tap.delegate = self;    [self.view addGestureRecognizer:tap];    [tap release];

       UITapGestureRecognizer协议方法：

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch{    if ([touch.view isKindOfClass:[UIButton class]])    {        return NO;    }    return YES;}