Shared cache between two WebViews

Question

Is it possible to enable caching between multiple webviews? Here is the scenario:

1. Activity A with WebView 1 is created to show xyz.com
2. Later Activity B with WebView 2 is created to show xyz.com again

I tried webView.getSettings().setCacheMode(WebSettings.LOAD_DEFAULT); but the page (I use a large wikipedia page for testing) is still reloaded from the web instead of using the cache.

Answer 1

According to the documentation, all WebViews in an application share their cache.

However, it looks like Wikipedia always sets the response headers in such a way as to mark the response un-cacheable:

Cache-Control:private, s-maxage=0, max-age=0, must-revalidate

So, I don't think that you're doing anything wrong, nor do I think that there is anything that you can to fix the situation with Wikipedia. Try a different web site, that uses a more 'normal' caching policy, and I'm sure that you will see the WebView's cache working as you expect.