Disabling links in android WebView
First, I am quite green in the world of programming, so forgive me if my question lacks clearance in any part. I am currently trying to make an app which requires links cannot be executed in the WebView - or in another browser for that sake. I have managed to put the following two links, In Android Webview, am I able to modify a webpage's DOM? and Titanium Appcelerator Quickie: Disable links in Webview, together and create the following working code:
private class WebClient extends WebViewClient {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
@Override
public void onPageFinished(WebView view, String url)
{
view.loadUrl("java开发者_C百科script:document.body.innerHTML = document.body.innerHTML.replace(/<a.*href=/gi,'<a href=\"#\" _url=');");
}
}
The snippet above is placed before the onCreate-method and is referenced in the onCreate-method like this:
viewer = (WebView) findViewById(R.id.wv_engine);
viewer.setWebViewClient(new WebViewClient());
viewer.loadUrl(content);
Now, the code works... But only after the requested webpage has been loaded a second time. The first time I execute the WebView, example.com has all its links intact, clickable and executedable. Using the backbutton, exiting the WebView and entering it again renders all the links disabled by changing
<a href="http://www.example.com">link</a>
to
<a href="#" _url="http://www.example.com">link</a>
Now, I a theory which I am not at all sure about (I am no programmer). I believe the JavaScript is executed to slow, which results in the links-manipulation never happening. That is why it works the second time working instead with with cache. I got those thought from reading this discussion. However I have no idea how to correct it.
So my question goes: How can I make sure that none of the links of the displayed website can ever be used? Is there a way to make manipulation happen before the site is displayed?
Thanks for your time and effort. This is truly an amazing community ;)
- Krede
I think this is wrong:
viewer.setWebViewClient(new WebViewClient());
I guess you mean this instead:
viewer.setWebViewClient(new WebClient());
This explains why urls are not disabled at 1st load. But I don't understand why they are disabled 2nd time.
Additionally, I think you should remove this:
view.loadUrl(url);
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