thread/demoapp/res/navigation/nav_graph.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright (C) 2023 The Android Open Source Project

     Licensed under the Apache License, Version 2.0 (the "License");
     you may not use this file except in compliance with the License.
     You may obtain a copy of the License at

          http://www.apache.org/licenses/LICENSE-2.0

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     distributed under the License is distributed on an "AS IS" BASIS,
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<navigation xmlns:android="http://schemas.android.com/apk/res/android"
            xmlns:tools="http://schemas.android.com/tools"
            xmlns:app="http://schemas.android.com/apk/res-auto"
            android:id="@+id/nav_graph"
            app:startDestination="@+id/thread_network_settings" >
    <fragment
        android:id="@+id/thread_network_settings"
        android:name=".ThreadNetworkSettingsFragment"
        android:label="Thread Network Settings"
        tools:layout="@layout/thread_network_settings_fragment">
    </fragment>

    <fragment
        android:id="@+id/connectivity_tools"
        android:name=".ConnectivityToolsFragment"
        android:label="Connectivity Tools"
        tools:layout="@layout/connectivity_tools_fragment">
    </fragment>
</navigation>