How to navigate fragment without adding it into backstack with NavController?

Question

NavController has methods navigate which navigate by default with backstack. How to navigate to the fragment without having backstack? Please note that, I am not asking about FragmentTransaction

just dont call `fragmentTransaction.addToBackStack(null);` – Mahdi Moqadasi Dec 17 '18 at 17:42 — Mahdi Moqadasi, Dec 17 '18 at 17:42
I am not using `fragmentTransaction` – Farrux Bahodirov Dec 18 '18 at 10:32 — Farrux Bahodirov, Dec 18 '18 at 10:32
Then post at least part of your codes – Mahdi Moqadasi Dec 18 '18 at 10:48 — Mahdi Moqadasi, Dec 18 '18 at 10:48

score 7 · Answer 1 · answered Dec 17 '18 at 17:56

If you have a back stack of:

A -> B

And want to get to a back stack of

A -> C

You can do a 'replace' operation by popping B off the back stack and adding C.

In Navigation, this is done by using app:popUpTo (and optionally app:popUpToInclusive="true" if needed) to the <action> in your XML or by using the equivalent NavOptions API.

<action
  android:id="@+id/goToC"
  app:destination="@+id/c"
  app:popUpTo="@+id/b"
  app:popUpToInclusive="true"/>

score 1 · Answer 2 · answered Feb 29 '20 at 22:41

You can do it like this:

val drawerLayout: DrawerLayout = findViewById(R.id.drawer_layout)
val navView: NavigationView = findViewById(R.id.nav_view)
val navController = findNavController(R.id.nav_host_fragment)

appBarConfiguration = AppBarConfiguration(
    setOf(
        R.id.nav_home, R.id.nav_gallery, R.id.nav_slideshow,
        R.id.nav_tools, R.id.nav_share, R.id.nav_send
    ), drawerLayout
)

setupActionBarWithNavController(navController, appBarConfiguration)
navView.setupWithNavController(navController)

navView.setNavigationItemSelectedListener {

    //----------- Pop Back Stack
    navController.popBackStack()
    //---------------------------

    navController.navigate(it.itemId)
    drawerLayout.closeDrawers()

    true
}

How to navigate fragment without adding it into backstack with NavController?

2 Answers2

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