BoilerplateKKMVP

Welcome to my boilerplate Android project. Firstly, why I named it KKMVP?

Kotlin

Koin

ModelViewPresenter

Technologies and patterns used

• MVP with contracts
• 100% Kotlin
• AndroidX
• Retrofit2 and OkHttp
• RxJava2
• Koin (DI)
• Room
• Espresso
• Latest sdk

MVP with contracts

This pattern allow us to easy hermetization beetween Views and Presenters.

interface IJokeContract{
    interface V: IView{
        fun showJokeText(joke: String)
        ...
        fun onShowNewJoke(action: () -> Unit)
    }
    interface P: IPresenter<V>
}

Interface V should be implement by inheritance BaseActivity or BaseFragment class. This solution automatically attach and detach presenter object in proper moment of Activity of Fragment lifecycle.

Interface P should be implement by inheritance BasePresenter class. BasePresenter contains subscriptions variable (CompositeDisposable), every RxJava's Disposable should be add to it (preventing memory leaks).

Every P's interface should be bind to implmentation by factory in PresenterModule file.

...
    factory<IJokeContract.P> { JokePresenterImpl(get(), get()) }
...

You you shouldn't add any code to *Contract.P file. View class shouldn't know anything about Presenter. Better way is setting listeners like this:

    override fun onShowNewJoke(action: () -> Unit) {
        getNewJokeBtn.setOnClickListener { action.invoke() }
    }

See com.shhatrat.boilerplate_kkmvp.ui.joke for more details and example.

How-to

• clone this repository
• in app/build.gradle change applicationId to your package
• in strings.xml change app_name
• change Boilerplate.ktclass name to other
• change com.shhatrat.boilerplatekkmvp package to your package
• remove .git files and directories