In this talk, we'll show you how and why to use the Model View Presenter design pattern on Android with a simple practical example.

1. MVP design pattern
Dino Kovač

2. Example app - list

3. Example app - details

4. Architecture
Model Presenter View

5. View
• Activity, Fragment, View…
• has a reference to the Presenter
• propagates events from the UI to the presenter
(onClicks, lifecycle events)
• exposes methods that control the presentation of
data
(show / hide the loading layout)

6. Presenter
• middle-man between the View and Model
• has a reference to the View and Model
• introduces a level of abstraction to the data from the
Model and formats it before sending it to the View
- this makes the View and Model independent
• updates the UI - the difference from MVC!

7. Interactor (Model)
• gateway towards the business logic
• contains methods for data retrieval
• in practice we use an Interactor

8. Conventions
• mvp
• views
• XyView
• listeners
• XyListener
• presenters
• XyPresenter
• impl
• XyPresenterImpl
• interactors
• XyInteractor
• impl
• XyInteractorImpl

9. Dependencies
PokemonDetailsView PokemonDetailsPresenter PokemonDetailsInteractor
PokemonDetailsView
Implementation
PokemonDetailsPresenter
Implementation
PokemonDetailsInteractor
Implementation

10. Resources
• http://antonioleiva.com/mvp-android/
• https://github.com/reisub/Dagger-2-
Example