ActivityMainBinding.kt

class MainActivity : AppCompatActivity() {

    private lateinit var binding: ActivityMainBinding

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        binding = ActivityMainBinding.inflate(layoutInflater)
        setContentView(binding.root)
      
        // Accès au texte
        binding.helloText.text = "Hello World"
        // Accès au bouton
        binding.helloButton.setOnClickListener {

        }
    }
}