title: how to remove default animation transition when using navigation component in Android?
body: <p>I am using Navigation component, and I have a bottom navigation view in the main activity. when I tap the tab in that bottom navigation view, it seems that there is a fade in animation when the fragment appear. I don't think I manually set the animation, it seems that the animation will be there by default.</p>
  
  <p>I want to remove that animation. here is the code I use in my Main Activity.</p>
  
  <pre><code>class MainActivity : AppCompatActivity(), NavController.OnDestinationChangedListener {
  
      private lateinit var navController : NavController
      lateinit var destinationTitleTextView : TextView
      lateinit var progressBar : ProgressBar
      lateinit var topToolbar : Toolbar
      lateinit var bottomNavigationView : BottomNavigationView
  
      override fun onCreate(savedInstanceState: Bundle?) {
          super.onCreate(savedInstanceState)
          setContentView(R.layout.activity_main)
  
          FirebaseApp.initializeApp(this)
  
          // Initial Setup views
          navController = Navigation.findNavController(this,R.id.nav_host_fragment)
          setupBottomNavMenu(navController)
          setupActionBar(navController)
          setUpViewDeclaration()
  
  
          // Add Listeners
          navController.addOnDestinationChangedListener(this)
  
  
      }
  
  
  
      private fun setUpViewDeclaration() {
          destinationTitleTextView = findViewById(R.id.destination_label_text_view)
          progressBar = findViewById(R.id.progressBar_main_activity)
          topToolbar = findViewById(R.id.top_toolbar)
          bottomNavigationView = findViewById(R.id.bottom_nav)
  
      }
  
      private fun setupBottomNavMenu(navController: NavController) {
          bottom_nav.setupWithNavController(navController)
      }
  
  
      private fun setupActionBar(navController: NavController) {
  
          setSupportActionBar(top_toolbar)
          supportActionBar?.setDisplayShowTitleEnabled(false)
  
          // set up top hierarchy destination
          val appBarConfiguration = AppBarConfiguration(setOf(
              R.id.destination_home,
              R.id.destination_search,
              R.id.destination_user_control,
              R.id.destination_create_event)
          )
  
          top_toolbar.setupWithNavController(navController,appBarConfiguration)
  
      }
  
  
  }
  </code></pre>