injecting viewmodel with navigation-graph scope: NavController is not available before onCreate()

Question

I\'m using a navigation-component in my application and also using shared ViewModel between multiple fragments that are in the same graph. Now I want to instantiate the View

Answer 1

...we should inject objects ( ViewModel,..etc ) in onAttach...

Looks like it is currently a no go for such injection with the original by navGraphViewModels(R.id.nav_graph) delegated property provided by androidx.navigation package because from the source code

findNavController().getBackStackEntry(navGraphId) and

public final NavController getNavController() it stated that:

 * Returns the {@link NavController navigation controller} for this navigation host.
 * This method will return null until this host fragment's {@link #onCreate(Bundle)}

And here are some workarounds:

https://github.com/InsertKoinIO/koin/issues/442