Is it possible to use XML-RPC in mobile applications this way?

Question

Android

There is a wordpress site - you need to make an Android\iOS application.
The question is how best to work with the site so that it is available offline?
1. The WebView option is
working through WebView, if there is no Internet, then it works with the data that was loaded earlier. Before each opening of the page, we check the Internet, if there is, then we update ...
2. XML-RPC
we make requests through xml-rpc, that is, we make all menus, names of categories and articles, as well as their contents, through this request. And again, if there is NO Internet, then we work with what we loaded into the CACHE ... Will this work according to this protocol?
And one more question, if videos (mp4, swf) are uploaded to local hosting, can they be saved in the "phone cache" in both cases?

Answer 1

I won’t tell you about XML-RPC, but with WebView you can try to do this.
The second question is not clear, you are free to save and cache anything on your phone.