Limit WebView touch handling to links

Is it possible to capture touch events over a WebView in the 开发者_运维技巧activity that contains it, without loosing link functionality?

Consider a WebView showing a webpage with links. If the user taps on a link I would like the WebView to handle the touch event. If the user taps somewhere else I would like the activity to handle the touch event.

How can this be done?

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Yes, it is.

(I can't elaborate more on this unless you are more specific on your question.)

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If i understand your question correctly it'd seem difficult to interpret whether something is a link or not in the onTouchEvent() since all it knows about is X,Y coordinates (not html). However, off the top of my head it seems you could probably use the javascript binding piece in WebView to have javascript decide if the something is a link or not and act accordingly. Again, I haven't done this before nor tested it...just thinking out loud.

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When initializing your WebView, try:

mWebView.setWebViewClient(new WebViewClientOverrider());

Then create a private class:

private class WebViewClientOverrider extends WebViewClient {
    @Override
    public boolean shouldOverrideUrlLoading(WebView view, String url) {
        //TODO handle the link  
        return true;
    }
}

Lastly, replace the TODO handle the link line with your own code for handling the link selection.

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Or you can monitor the stack trace for:

android.webkit.CallbackProxy.uiOverrideUrlLoading()

See http://www.javapractices.com/topic/TopicAction.do?Id=78 for how to determine your stack trace from a throwable (created in an overriden WebView.loadUrl() method).