Example of interface for MVP architecture

mvp-example.java

interface MessageView {
 // View methods should be directives, as the View is just executing orders from the 
 // Presenter.
 
 // Methods for updating the view
 void setMessageBody(String body);
 void setAuthorName(String name);
 void showTranslationButton(boolean shouldShow);
 
 // Navigation methods
 void goToUserProfile(User user);
}
 
interface MessagePresenter {
 // Presenter methods should mostly be callbacks, as the View is reporting events for the
 // Presenter to evaluate
 
 // Lifecycle events methods
 void onStart();
 
 // Input events methods
 void onAuthorClicked();
 void onThreeFingersSwipe();
}