I am using navhostfragment in fragment along with bottom navigation view.
Below is the xML
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".HomeFragment">
<androidx.fragment.app.FragmentContainerView
android:id="@+id/nav_host_fragment"
android:name="androidx.navigation.fragment.NavHostFragment"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintBottom_toTopOf="@+id/bottomMenu"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:navGraph="@navigation/staging_home_nav_graph" />
<com.google.android.material.bottomnavigation.BottomNavigationView
android:id="@+id/bottomMenu"
android:layout_width="0dp"
android:layout_height="wrap_content"
app:labelVisibilityMode="labeled"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:menu="@menu/bottom_menu" />
</androidx.constraintlayout.widget.ConstraintLayout>
And in my fragment I am using the below method
binding.bottomMenu.setupWithNavController(Navigation.findNavController(binding.navHostFragment))
When I run the code the fragment doesn't open up.
If I remove the FragmentContainerView I see the correct fragment being displayed. Can someone point out what am I missing?
I am not sure what is the issue with the bottom navigation view with this use case. After going through multiple links and posts I was able to solve
You need an extension for bottom navigation which takes up list of nav graphs. I found that piece in one of the links
Extension BottomNavigationExt.kt
Your XML will look like
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
tools:context="home.HomeFragment">
<androidx.fragment.app.FragmentContainerView
android:id="@+id/homeNavHost"
android:name="androidx.navigation.fragment.NavHostFragment"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintBottom_toTopOf="@+id/bottomMenu"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<com.google.android.material.bottomnavigation.BottomNavigationView
android:id="@+id/bottomMenu"
android:layout_width="0dp"
android:layout_height="wrap_content"
app:labelVisibilityMode="labeled"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:menu="@menu/bottom_menu" />
</androidx.constraintlayout.widget.ConstraintLayout>
Finally setup with
val navGraphIds = listOf(
R.navigation.dashboard_nav_graph,
R.navigation.offer_nav_graph,
R.navigation.profile_nav_graph,
R.navigation.document_nav_graph,
R.navigation.more_nav_graph
)
// Setup the bottom navigation view with a list of navigation graphs
val controller = binding.bottomMenu.setupWithNavController(
navGraphIds = navGraphIds,
fragmentManager = childFragmentManager,
containerId = R.id.homeNavHost,
intent = requireActivity().intent
)
The most important your menu item id and graph id should be same