backpress-4.kt

class MainActivity ... {
  
  override fun onCreate(...) {
  
    // This will work but has a catch. Do not implement this,
    onBackPressedDispatcher.addCallback(object: OnBackPressedCallback(true) {
      override fun handleOnBackPressed() {
          if (shouldFinish()) {
              this.remove()
              onBackPressed()
              onBackPressedDispatcher.addCallback(this)
          }
      }
    })
  }
}