I created two activities as a navcontroller for the fragment, I am not sure if this is the right approach.

For `MyActivity`, the bottom navigation is working well and showing the fragment. But for the `MainActivityRelawan` the Home Menu didn't navigate when item is clicked and the fragment only is shown after I press back button, I don't know why.

The `main_activity` is for controlling the Main Activity Fragment, and `main_activity_relawan` is for controlling Main Activity Relawan Fragment.

This is my `MainActivityRelawan`

```
 val navController = findNavController(R.id.nav_host_fragment_activity_main_relawan)
        // Passing each menu ID as a set of Ids because each
        // menu should be considered as top level destinations.
        val appBarConfiguration = AppBarConfiguration(
            setOf(
                R.id.navigation_home_relawan, R.id.navigation_dashboard, R.id.navigation_notifications
            )
        )
        setupActionBarWithNavController(navController, appBarConfiguration)
        navView.setupWithNavController(navController)

```

And this is my `MainActivity`

```
val navController = findNavController(R.id.nav_host_fragment_activity_main)
        // Passing each menu ID as a set of Ids because each
        // menu should be considered as top level destinations.
        val appBarConfiguration = AppBarConfiguration(
            setOf(
                R.id.navigation_home, R.id.navigation_dashboard, R.id.navigation_notifications
            )
        )
        setupActionBarWithNavController(navController, appBarConfiguration)
        navView.setupWithNavController(navController)

```

and for each of `findNavController` i use different activity XML and different `navGraph`
this is my `MainActivity findNavController`

```
<com.google.android.material.bottomnavigation.BottomNavigationView
        android:id="@+id/nav_view"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="0dp"
        android:layout_marginEnd="0dp"
        android:background="?android:attr/windowBackground"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:menu="@menu/bottom_nav_menu" />

    <fragment
        android:id="@+id/nav_host_fragment_activity_main"
        android:name="androidx.navigation.fragment.NavHostFragment"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:defaultNavHost="true"
        app:layout_constraintBottom_toTopOf="@id/nav_view"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.0"
        app:navGraph="@navigation/mobile_navigation" />

```

and this is my `MainActivityRelawan NavController`

```
<com.google.android.material.bottomnavigation.BottomNavigationView
        android:id="@+id/nav_view_relawan"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="0dp"
        android:layout_marginEnd="0dp"
        android:background="?android:attr/windowBackground"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:menu="@menu/bottom_nav_menu" />

    <fragment
        android:id="@+id/nav_host_fragment_activity_main_relawan"
        android:name="androidx.navigation.fragment.NavHostFragment"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:defaultNavHost="true"
        app:layout_constraintBottom_toTopOf="@id/nav_view_relawan"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:navGraph="@navigation/navigation_relawan" />

```

and i using different navGraph for each. This is `NavigationGraph` for `MainActivity`

```
 <fragment
        android:id="@+id/navigation_home"
        android:name="com.example.tes.ui.home.HomeFragment"
        android:label="@string/title_home"
        tools:layout="@layout/fragment_home" />

    <fragment
        android:id="@+id/navigation_dashboard"
        android:name="com.example.tes.ui.dashboard.DashboardFragment"
        android:label="@string/title_dashboard"
        tools:layout="@layout/fragment_dashboard" />

    <fragment
        android:id="@+id/navigation_notifications"
        android:name="com.example.tes.ui.notifications.NotificationsFragment"
        android:label="@string/title_notifications"
        tools:layout="@layout/fragment_notifications" />

```

and this is `NavGraph` for the `MainActivityRelawan`

```
<navigation 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:id="@+id/navigation_relawan"
    app:startDestination="@+id/navigation_home_relawan">

    <fragment
        android:id="@+id/navigation_home_relawan"
        android:name="com.example.tes.ui.home_relawan.RelawanFragment"
        android:label="@string/title_home"
        tools:layout="@layout/fragment_main_relawan" >
        <action
            android:id="@+id/action_navigation_home_relawan_to_navigation_dashboard"
            app:destination="@id/navigation_dashboard" />
    </fragment>

    <fragment
        android:id="@+id/navigation_dashboard"
        android:name="com.example.tes.ui.dashboard.DashboardFragment"
        android:label="@string/title_dashboard"
        tools:layout="@layout/fragment_dashboard" >
        <action
            android:id="@+id/action_navigation_dashboard_to_navigation_notifications"
            app:destination="@id/navigation_notifications" />
    </fragment>

    <fragment
        android:id="@+id/navigation_notifications"
        android:name="com.example.tes.ui.notifications.NotificationsFragment"
        android:label="@string/title_notifications"
        tools:layout="@layout/fragment_notifications" >

    </fragment>

</navigation>

```