NavHost

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 on their root view

• Route system Back button events to the NavController either by manually calling NavController.popBackStack or by calling NavHostController.setOnBackPressedDispatcher when constructing the NavController.

Optionally, a navigation host should consider calling:

• Call NavHostController.setLifecycleOwner to associate the NavController with a specific Lifecycle.

• Call NavHostController.setViewModelStore to enable usage of NavController.getViewModelStoreOwner and navigation graph scoped ViewModels.

Summary

Public fields

@NonNull
public abstract @NonNull NavController navController