How to implement "loading views" for async operations on Android in generic way?

Every application, which performs some background work on user requests, has to somehow indicate that is busy - usually showing some animated "loading view".

How this behavior can be implemented in generic way? By "generic" I mean:

1. No copy-pasting xml/java code for each screen of the application (some base activity/fragment class with dynamic layout modification?)
2. No code for showing/hiding "loading view" in concrete activity/fragment classes (publishing events when starting/finishing async operation?)

In other words, implementing some concrete screen, I don't have to think about loading views.

Has someone implemented something like this?