Loading Fragment in Compose, it called commit several times

Question

I tried to load a Fragment in Compose as below, through the supportFragmentManager as shown below.

class MainActivity : FragmentActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContent {
            AndroidViewBinding(FragmentContainerBinding::inflate) {
                supportFragmentManager.beginTransaction()
                    .replace(container.id, MyFragment()).commit()
                }
        }
    }
}

However, when the view is shown, the fragment gets committed (loaded) several times (i.e. the onCreate() is called several times)

Any way to prevent committing several times? Is there a way to resume the state as well (e.g. in case got killed by the system, how to get it restored)?

(note: I'm not using the androidx.fragment.app.FragmentContainerView in the XML as in Developer Doc I do have different fragments per some logic (not shown here), hence I'll have to use supportFragmentManager)

Answer 1

Found a way to get this working

class MainActivity : FragmentActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContent {
            FragmentContainer(
                modifier = Modifier.fillMaxSize(),
                fragmentManager = supportFragmentManager,
                commit = { add(it, MyFragment()) }
            )
        }
    }
}

@Composable
fun FragmentContainer(
    modifier: Modifier = Modifier,
    fragmentManager: FragmentManager,
    commit: FragmentTransaction.(containerId: Int) -> Unit
) {
    val containerId by rememberSaveable { mutableStateOf(View.generateViewId()) }

    AndroidView(
        modifier = modifier,
        factory = { context ->
            fragmentManager.findFragmentById(containerId)?.view
                ?.also { (it.parent as? ViewGroup)?.removeView(it) }
                ?: FragmentContainerView(context)
                    .apply { id = containerId }
                    .also {
                        fragmentManager.commit { commit(it.id) }
                    }
        }
    )
}

Note this will need Fragment's KTX

    implementation "androidx.fragment:fragment-ktx:1.4.1"