BottomNavigationView not working with navigation

Question

I'm trying to make this BottomNavigationView work with navigation but is giving me head-aches.

I'll explain my setup :

this the fragment of my activity_home.xml

<fragment
        android:id="@+id/nav_host_fragment"
        android:layout_width="match_parent"
        android:name="androidx.navigation.fragment.NavHostFragment"
        android:layout_height="match_parent"
        android:layout_marginBottom="?attr/actionBarSize"
        app:defaultNavHost="true"
        app:navGraph="@navigation/nav_graph" />

Also I've tried with FragmentContainerView but is not working neither.

The error is on the navigation/nav_graph.xml as the error says :

Exception inflating package:navigation/nav_graph line 7

Where line 7 is :

<?xml version="1.0" encoding="utf-8"?>
<navigation xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/nav_graph"
    app:startDestination="@id/featureHomeNavGraph">

    <include //Line 7
        android:id="@+id/featureHomeNavGraph"
        app:graph="@navigation/feature_home_nav_graph"/>

    <include
        android:id="@+id/featureFavouritesNavGraph"
        app:graph="@navigation/feature_favourites_nav_graph" />

    ....
</navigation>

Then I've created different layouts for the navigations as :

feature_home_nav_graph.xml

<?xml version="1.0" encoding="utf-8"?>
<navigation xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    app:startDestination="@id/homeFragment">
    <fragment
        android:id="@+id/homeFragment"
        android:name="package.HomeFragment"
        android:label="HomeFragment" />
</navigation>

And feature_favourites_nav_graph.xml

<?xml version="1.0" encoding="utf-8"?>
<navigation xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    app:startDestination="@id/favouritesFragment">
    <fragment
        android:id="@+id/favouritesFragment"
        android:name="package.FavouritesFragment"
        android:label="FavouritesFragment" />
</navigation>

Then I think the problem also comes by the implementation on my HomeActivity.kt where I have to setup the navigation stuff... I'm doing it like this :

override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_home)
        setSupportActionBar(findViewById(R.id.toolbar))
        val navHostFragment = supportFragmentManager
            .findFragmentById(R.id.nav_host_fragment) as NavHostFragment?
        NavigationUI.setupWithNavController(
            bottomNavigation,
            navHostFragment!!.navController
        )
    }

Also I've tried the NavigationExtension followed on this tutorial but it did not work neither.

Note

I'm using the same id on my items of bottom_menu.xml than on the navigation graph id for the fragments.

Answer 1

I guess the feature_home_nav_graph doesn't have an id on the navigation tag?