framework-moxy

name	framework-moxy
description	Trigger: Presenter Logic. Managing Moxy MVP state, Presenter lifecycle, and view delegation without @InjectPresenter.

MVP with Moxy

Presenter Delegation

Serenity uses Kotlin delegation for Moxy presenters to maintain a clean lifecycle and support Dependency Injection.

Mandatory Pattern

DO NOT use @InjectPresenter. Instead, inject a Provider and use the moxyPresenter delegate.

@Inject
lateinit var presenterProvider: Provider<MainPresenter>

internal val presenter by moxyPresenter { presenterProvider.get() }

View Interface Definition

Define a view interface that extends MvpView. Use Moxy strategy annotations to control how commands are queued.

@StateStrategyType(AddToEndSingleStrategy::class)
interface MainView : MvpView {
    fun displayData(items: List<VideoContent>)
    fun showLoading()
    fun hideLoading()
}

Presenter Implementation

Presenters should extend MvpPresenter<ViewInterface>.

class MainPresenter @InjectConstructor(
    private val repository: VideoRepository
) : MvpPresenter<MainView>() {

    override fun onFirstViewAttach() {
        super.onFirstViewAttach()
        loadData()
    }

    private fun loadData() {
        // logic using repository and updating viewState
        viewState.showLoading()
        // ...
    }
}

Integration with Toothpick

Ensure the presenter is available in the Toothpick scope, usually via @InjectConstructor. For Activities, the injection usually happens in super.onCreate() when extending InjectingMvpActivity.