Status Update
No update yet.
Comments
il...@google.com
ap...@google.com
Is this specific to navigation? Or can this be reproduced with another other Composable component?
il...@google.com
It only happens inside of a NavHost. So, yes, it seems to be specific to navigation.
ap...@google.com
This was caused by the fix to BackHandler lifecycle aware. The problem here is that the NavController registers its lifecycle and added an observer to the Activity Lifecycle in composition while the BackHandler registers its observer on the Activity Lifecycle in a DisposbleEffect. This means that the NavController will always get Lifecycle callbacks before the BackHandler, so the components listening the the NavController's lifecycle (like the NavBackStackEntry) will always get their Lifecycle callbacks before the BackHandler as well.
This should be addressed by work coming in 2.7 to integrate the BackHandler into the NavHost.
Description
Version used: 1.0.0-alpha06
Currently, NavigationUI is hard coded to only hide the Up button on the start destination of the navigation graph. Particularly in cases where you're using bottom nav or a navigation drawer, it is advantageous to hide the Up button on all of those top level destinations.
NavigationUI should offer a way to pass in exactly what those top level destinations are. It should default to the start destination of the navigation graph, as it was before.