Get touchesBegan on a subview (UIWebView)

问题

I've an UIWebView which is added as a subview in a UIview and I would like to detect when this UIWebView is touched but touchesBegan just don't work.

Any idea ?

回答1:

1. Subclass UIWebView in your code and then implement touchesBegan in your class.
2. Add the subclassed webview as a subview of your UIView.

3. Call super in the subclassed UIWebView

   - (void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event 
   {
       [super touchesBegan: touches withEvent: event];
   }
   

回答2:

Subclassing and waiting for touchesBegan won't help you, as it won't get called.
I subclassed UIWebView and just "leeched" onto its gesture recognizers in subviews 2 levels deep (you could go recursively but thats enough for iOS6-7). Then you can do whatever you want with the touch location and gesture recognizer's state.

for (UIView* view in self.subviews) {
    for (UIGestureRecognizer* recognizer in view.gestureRecognizers) {
        [recognizer addTarget:self action:@selector(touchEvent:)];
    }
    for (UIView* sview in view.subviews) {
        for (UIGestureRecognizer* recognizer in sview.gestureRecognizers) {
            [recognizer addTarget:self action:@selector(touchEvent:)];
        }
    }
}

来源：https://stackoverflow.com/questions/9524011/get-touchesbegan-on-a-subview-uiwebview