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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); 

posted on 2012-02-14 12:00  pengyingh  阅读(3088)  评论(0编辑  收藏  举报

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