关于UIWebView不能响应touchesBegan等四个方法的解决案例

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);
}