做的APP需要在一个UIWebView中随点击位置动态出现button，用touchesBegan等怎么调试都不行，普通的UIView就可以，找了半天终于知道UIWebView不能这样用，那么怎么做呢，只有用UITapGestureRecognizer替代了，其他的手势还可以用UIPinchGestureRecognizer（放大缩小）和UIPanGestureRecognizer（拖动），SO，我们现在以UITagGestureRecongnizer来做，获取webView中的位置。 

UITapGestureRecognizer* myTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleSingleTap:)]; 

[self.view addGestureRecognizer:singleTap];　//这个可以加到任何控件上,比如你只想响应WebView，我正好填满整个屏幕 

myTap.delegate = self; 

myTap.cancelsTouchesInView = NO; 

[myTap release]; 

如果是双击可以这样： 

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

    doubleTap.numberOfTouchesRequired = 2;  

    [self.theWebView addGestureRecognizer:doubleTap];  

然后有一个关键的，要实现一个方法： 

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer 

{ 

    return YES; 

} 

最后，响应的方法中，可以获取点击的坐标哦！ 

-(void)handleSingleTap:(UITapGestureRecognizer *)sender{ 

    CGPoint gesturePoint = [sender locationInView:self.view]; 

    NSLog(@"handleSingleTap!gesturePoint:%f,y:%f",gesturePoint.x,gesturePoint.y); 

}