NavHost

public interface NavHost

A host is a single context or container for navigation via a NavController.

It is strongly recommended to construct the nav controller by instantiating a NavHostController, which offers additional APIs specifically for a NavHost. The NavHostController should still only be externally accessible as a NavController, rather than directly exposing it as a NavHostController.

Navigation hosts must:

• Handle saving and restoring their controller's state
• Call Navigation.setViewNavController(View, NavController) on their root view
• Route system Back button events to the NavController either by manually calling NavController.popBackStack() or by calling NavHostController.setOnBackPressedDispatcher(androidx.activity.OnBackPressedDispatcher) when constructing the NavController.

• Call NavHostController.setLifecycleOwner(LifecycleOwner) to associate the NavController with a specific Lifecycle.
• Call NavHostController.setViewModelStore(ViewModelStore) to enable usage of NavController.getViewModelStoreOwner(int) and navigation graph scoped ViewModels.

Summary

Public methods

public abstract NavController getNavController ()