Step #7: Wiring in the Navigation

We need to switch MainActivity to use this re-created activity_main layout resource. So, change the onCreate() function in MainActivity to be:

  override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_main)
  }

If you now run the app, it should give you the same result as before we added the fragment:

When we add new screens in upcoming tutorials, we will:

• Create fragments for those screens
• Add those as destinations in our navigation graph, connecting them with previous screens to indicate how we move from one to the next
• Add some Kotlin code to say “let’s navigate from where we are to this destination”

And the rest will be taken care of by the Navigation component.