Ytukyg

I am trying to bind toolbar to navigation controller, for that I am using the following code:

NavigationUI.setupWithNavController(toolbar, NavHostFragment.findNavController(nav_host))

and in the menu file, I provided the id of the fragment to which app should navigate like this:

<item

    android:id="@+id/menuFragment"

    android:orderInCategory="100"

    android:title="@string/action_settings"

    app:showAsAction="never" />

and I have a simple navigation graph file like this:

<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/nav_graph"

    app:startDestination="@id/homeFragment">



    <fragment

        android:id="@+id/homeFragment"

        android:name="com.vapoyan.myapplication.HomeFragment"

        android:label="fragment_home"

        tools:layout="@layout/fragment_home" >

        <action

            android:id="@+id/action_homeFragment_to_menuFragment"

            app:destination="@id/menuFragment" />

    </fragment>



    <fragment

        android:id="@+id/menuFragment"

        android:name="com.vapoyan.myapplication.MenuFragment"

        android:label="fragment_menu"

        tools:layout="@layout/fragment_menu" />

</navigation>

Does anyone have experience or can suggest how I can fix the issue and is toolbar supported by the navigation component?

Any example code or reference?

I am using a Navigation drawer in my app, but i think this will be enough for ur case:

At this moment i am using this android libs:
In my build.gradle

 implementation 'android.arch.navigation:navigation-fragment:1.0.0-alpha07'

 implementation 'android.arch.navigation:navigation-ui:1.0.0-alpha07'

In my Activity

class MainActivity : BaseActivity() {



    @SuppressLint("RestrictedApi")

    override fun onCreate(savedInstanceState: Bundle?) {

        super.onCreate(savedInstanceState)

        setContentView(R.layout.main_activity)



        val navController = Navigation.findNavController(this, /*ur nav controller ID*/)



        // Set up ActionBar

        setSupportActionBar(/*ur toolbar*/)



        NavigationUI.setupActionBarWithNavController(this, navController)

    }

}

U can check the docs here u can find more info: https://developer.android.com/topic/libraries/architecture/navigation/navigation-ui#create_a_toolbar

Finally, I found a solution thanks to Google CodeLab

What I was missing was:

override fun onOptionsItemSelected(item: MenuItem): Boolean {

     return NavigationUI.onNavDestinationSelected(item, NavHostFragment.findNavController(nav_host))

            || super.onOptionsItemSelected(item)

}

Plus if you want to have back button support you need in onCreate method to add:

NavigationUI.setupWithNavController(toolbar, NavHostFragment.findNavController(nav_host))

Basically, In my understanding just bt providing id of the correct fragment for the menu item and calling setupWithNavController should work, but that assumption was not correct, or maybe in the current version (1.0.0-alpha07) Google guys changed something. So now it is working fine.

If you see that there is a way to do it shorter :) or better :) let me know.