Skip to main content
Version: 0.11.1

ViewModels

Once you've added Tangle as a dependency, implementing ViewModel injection is easy.

1. Annotate your ViewModels​

ViewModel injection is done through the @VMInject constructor annotation.

class MyViewModel @VMInject constructor(
  val myRepository: MyRepository
) : ViewModel() {
  // ...
}

2. Tell Tangle about the AppComponent​

TangleGraph must be initialized as early as possible -- typically in Application.onCreate().

import android.app.Application
import tangle.inject.TangleGraph

class MyApplication : Application() {

  override fun onCreate() {
    super.onCreate()

    val myAppComponent = DaggerAppComponent.factory()
      .create(this)

    TangleGraph.init(myAppComponent)
  }
}

3. Use the tangleViewModel delegate​

class MyFragment : Fragment() {
  val viewModel by tangleViewModel<MyViewModel>()

  // ...
}