I wanted to see how MVP would work when you bring in RecyclerViews and custom views, so I made this project.
There are 3 activities, a simple login activity, a list activity, and a details activity.
Each Activity implements a PresenterView subinterface, this interface describes methods that change the view, such as showLoadingIcon() or hideLoadingIcon() or loadResultsIntoRecyclerView()
Each Activity also has a Presenter subclass which is relevant from onCreate to onDestroy.
On the Activities' various events, onSubmitClick(), onStart(), ...any event, presenter.event() is called where presenter will perform logic and maybe update the view with calls like view.showLoadingIcon(), view.hideLoadingIcon(), view.loadItemsIntoRecyclerView()
Take a look at the android tests.
It is crazy awesome how easy it becomes to test that certain actions happen following an event.
Since this project uses RxJava, Retrofit2, Dagger2, there are ways of using a MockService to mock network calls.
Nonetheless, network calls are still asynchronous, so in our tests we need to account for that. which requires some hackery in the wiring of the tests