Is it possible to centre the actionbar title from a fragment using AndroidX navigation?

Issue

Currently, I am using the Navigation component from Android and the actionbar title is displayed on the left. However, I kind of want it centralised to make things neater, is there any way to go about doing so?

Image of the actionbar title that is displayed on the left

Activity’s code:

public class General extends AppCompatActivity {
    private BottomNavigationView bottomNavigationView;
    private NavController navController;
    private AppBarConfiguration appBarConfiguration;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.general);

        bottomNavigationView = findViewById(R.id.bottomNavigationView);
        navController = Navigation.findNavController(this,  R.id.fragment);

        appBarConfiguration = new AppBarConfiguration.Builder(R.id.addFragment, R.id.homeFragment).build();

        NavigationUI.setupWithNavController(bottomNavigationView, navController);
        NavigationUI.setupActionBarWithNavController(this, navController, appBarConfiguration);
    }
}

Activity’s XML Code

<?xml version="1.0" encoding="utf-8"?>
<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=".General">

    <com.google.android.material.bottomnavigation.BottomNavigationView
        android:id="@+id/bottomNavigationView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:menu="@menu/bottom_navigation_menu">

    </com.google.android.material.bottomnavigation.BottomNavigationView>

    <fragment
        android:id="@+id/fragment"
        android:name="androidx.navigation.fragment.NavHostFragment"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        app:defaultNavHost="true"
        app:layout_constraintBottom_toTopOf="@+id/bottomNavigationView"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:navGraph="@navigation/the_navigation" />

</androidx.constraintlayout.widget.ConstraintLayout>

Fragment XML Code:

<?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"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/the_navigation"
    app:startDestination="@id/homeFragment">

    <fragment
        android:id="@+id/homeFragment"
        android:name="com.test.HomeFragment"
        android:label="Home"
        tools:layout="@layout/home_fragment" />
    <fragment
        android:id="@+id/addFragment"
        android:name="com.test.AddFragment"
        android:label="Add"
        tools:layout="@layout/add_fragment" />
</navigation>

Solution

After a bit of searching, it seems like this did the trick. All I had to do was to add it to my Activity code.

Answered By – 風の歌

This Answer collected from stackoverflow, is licensed under cc by-sa 2.5 , cc by-sa 3.0 and cc by-sa 4.0

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