haroldadmin / dagger-mvrx-multimodule

Demonstrates usage of Dagger and MvRx in multi module apps

Multi Module Dagger-MvRx Sample

This project demonstrates how to use Dagger and MvRx together in a multi module app.

It is an adaptation of the hellodagger sample app from the MvRx repository.

Key things to note:

• All feature modules declare their own Dagger @Module class which binds their ViewModel factories into a Dagger Multibindinds map
• ViewModel Factories are collected in a ViewModelFactoriesComponent.
• The ViewModelFactoriesComponent lies inside the vmfactories module, which depends on all feature modules
• The core module contains the AppComponent, which takes in an instance of the map of ViewModelFactory, and makes it available for everyone to use.
• AppModule exists solely for the purpose of providing an @Provides annotated method for these ViewModelFactories. Ideally, this should not be needed because we provide Dagger with an instance of these ViewModel Factories inside the Component Builder with @BindsInstance, but Dagger does not understand how to make provisions for such dependencies directly.