Kotlin Programming By Example

Creating the MainPresenter

As always, the first thing we must do is create a presenter interface that defines functions to be implemented by a presenter implementation class. The following is the MainPresenter interface:

package com.example.messenger.ui.maininterface MainPresenter {  fun loadConversations()  fun loadContacts()  fun executeLogout()}

The loadConversations(), loadContacts(), and executeLogout() functions will be invoked by the MainView and must be implemented by the MainPresenterImpl class. Our MainPresenterImpl class with its defined properties, and onConversationsLoadSuccess() and onConversationsLoadError() methods is given as follows:

package com.iyanuadelekan.messenger.ui.mainimport com.iyanuadelekan.messenger.data.vo.ConversationListVO ...