BeforeMainActivity.kt

class MainActivity : AppCompatActivity() {
    @Inject lateinit var firstScreenTracker: FirstScreenTracker
    @Inject lateinit var viewModelFactory: ViewModelFactory
    
    override fun onCreate(savedInstanceState: Bundle?) {
        
        DaggerFirstComponent.builder().build().inject(this) // build dagger component and inject
        
        super.onCreate(savedInstanceState)
        setContent {
            AppTheme {
                Surface {
                    FirstScreen(
                        navigate = { TODO() },
                        firstScreenTracker = firstScreenTracker, // pass injected parameters downstream to composable
                        viewModelFactory = viewModelFactory
                    )
                }
            }
        }
    }
}