I am currently working on an app that requires the navigation template from creation. I have been fine-tuning the look of the default navigation template for the app I need to work on. However, there's one thing I have been unable to find a solution to which is to change the text in the app bar. It keeps saying 'Home' but I need to put the title of my app there. I have tried several things such as: `setTitle("App title here")` in the mainActivity, and in the manifest file I have also tried changing the text in `android:label` to the App title but nothing I do from the solutions I find online seems to work.

Is there any way I can get around this and change the 'home' text into my App's title? Thanks in advance for any suggestions.

**Code inside OnCreate as requested in a comment:**

```
override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setTitle("Simple Dark Calculator")
    setContentView(R.layout.activity_main)
    val toolbar: Toolbar = findViewById(R.id.toolbar)
    setSupportActionBar(toolbar)

    val drawerLayout: DrawerLayout = findViewById(R.id.drawer_layout)
    val navView: NavigationView = findViewById(R.id.nav_view)
    val navController = findNavController(R.id.nav_host_fragment)
    // Passing each menu ID as a set of Ids because each
    // menu should be considered as top level destinations.
    appBarConfiguration = AppBarConfiguration(setOf(
            R.id.nav_home, R.id.nav_gallery, R.id.nav_slideshow), drawerLayout)
    setupActionBarWithNavController(navController, appBarConfiguration)
    navView.setupWithNavController(navController)
}

```