Disable multiple backstack

[Hussienfahmy]

Hello I have an inquiry,
Mr. Murat Yener mentioned here that multiple backstack is enabled by default, but he didn't mention how to disable it
How I can disable Multiple backstack

[similincbose]

@Hussienfahmy did you find any way to disable it?

[Hussienfahmy]

@similincbose Unfortunately no.

[similincbose]

@Hussienfahmy hey got it

binding.bottomnavigationbar.apply {
            setupWithNavController(navController)
            setOnItemSelectedListener { item ->
                NavigationUI.onNavDestinationSelected(item, navController)
                navController.popBackStack(item.itemId, inclusive = false)
                true
            }
        }

[rishabh-hk]

@similincbose Can you mention some references regarding this because i want Java version of the above code.

[rishabh-hk]

Got it .. Thanks :)

Java Code will be:-

bottomNavigationView.setOnItemSelectedListener(new NavigationBarView.OnItemSelectedListener() {
@OverRide
public boolean onNavigationItemSelected(@nonnull MenuItem item) {
NavigationUI.onNavDestinationSelected(item,navController);
navController.popBackStack(item.getItemId(),false);
return true;
}
});

[mtf7101520]

邮件已经收到了，谢谢！

[OndraBasler]

I think I have found a better way how to disable it. Just call onNavDestinationSelected with false:

binding.bottomnavigationbar.apply {
            setupWithNavController(navController)
            setOnItemSelectedListener { item ->
                NavigationUI.onNavDestinationSelected(item, navController, false)
                true
            }
        }

I use 2.5.0 version of navigation components

[Al-Hussein-96]

Update:
this cause a new behavior for on back press, it created a new back stack fro bottom navigaiton items

I found this soultion as NavigationUI.kt

By default, the back stack will be popped back to the navigation graph's start destination. Menu items that have android:menuCategory="secondary" will not pop the back stack.

so the final solution work for me on 2.5.0 vesion is:

    <item
        android:id="@+id/parcel_navigation"
        android:icon="@drawable/ic_home_parcel"
        android:menuCategory="secondary"
        android:title="@string/Parcels"
        app:showAsAction="always" />

But I had to add it to all menu to do the correct behavior of bottom sheet.

[mtf7101520]

邮件已经收到了，谢谢！

[ybitite]

• Activities are arranged in a stack.
• Where each new activity you visits gets pushed onto the back stack.
• When you were on return the stacks are visited one after the other.
• But when you navigate via an action you can delete all stack that you dont need.
• For that you can add app:popUpTo="@id/your_id" on the appropriate navigation actions.

1. If you specify app:popUpTo="@id/home_navigation", then destinations in the back stack will get popped off until you reach home_navigation.

2. and you must add app:popUpToInclusive="true" .to have just one new instance of StartFragment in the back stack.

[mtf7101520]

邮件已经收到了，谢谢！