Wordpress admin panel and content on the server, and interface elements on the device. How to do it?

Question

CMS

I don't know much about android programming, but webview is scientific. I want the published content and the wordpress admin to be on a third-party hosting, and the interface elements in the "www" folder in the android application. That is, so that the interface is not loaded from the site, but has already been sewn into the application. If there is an option to do this with other CMS, like Joomla and others, then I'm also waiting for an answer.

Answer 1

RESTful API

Answer 2

https://developer.wordpress.org/rest-api/