The architecture we end up with is MVVM – Model-View-ViewModel, and is a proven concept originally coined by Microsoft back in 2005 (don’t let that scare you 😉 ).
I did a short writeup on the ViewModel and how it differs from Data Model or Transport Model. It can merge data from multiple sources (Models) and prepare that data for presentation. The ViewModel is a standard Java class whose sole responsibility is to represent the data behind a single View. The thing is that Data Binding framework will take over the main responsibilities of the Presenter (“acting upon the model and the view”), while the remainder is left to the enhanced Model – the ViewModel (“retreiving data from repositories and formatting”). It retrieves data from repositories (the model), and formats it for display in the view. The presenter acts upon the model and the view. According to the Wikipedia article on MVP, the Presenter has the following tasks:
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