MainActivity.kt

class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        // Create the binding and set it as the content view.
        val binding = ActivityMainBinding.inflate(layoutInflater)
        setContentView(binding.root)
        // Create view model that normally would be created in an injection system such as
        // by viewModel, or Dagger, or Hilt.
        // For our purposes of discussion we are just instantiating here as it does not matter
        // where our BusinessLogicCenter (ViewModel) comes from.
        val viewModel = ProductInfoBusinessLogicCenterViewModel()
        viewModel.productInfo.observe(this, { displayObject ->
            // Now we simply just set the display object!
            binding.displayObject = displayObject
            binding.executePendingBindings()
        })
    }
}