DroidUMM

 Model-View-Presenter (MVP) is an architecture pattern for the presentation layer of software applications. The pattern was originally developed at Taligent in 1990s and first was implemented in C++ and Java. In MVP, the View and the Model are neatly separated and the View exposes a contract through which the Presenter access the portion of View that is dependent on the rest of the system.  [Next Article Implement MVP on Android] The Model is the component which preserves data, state and business logic; it just exposes a group of service interfaces to Presenter and hides the internal details. The View is the user interface, it receives user’s action and contract to Presenter to achieve user’s need, and then the View responds user by result information. The Presenter sits in between the View and the Model; it receives input from the View and passes commands down to the Model. It then gets result and updates the View trough the contracted View interface.