IssueTracker

Component used: Navigation 3 Version used: Snapshot build 13015048

SinglePaneNavDisplay will display nothing if the supplied entryProvider returns a NavEntry for a different key.

Steps to reproduce:

• Run the following activity
• Tap on "Navigate to unknown" (this will result in a NavEntry(Unit) being returned by entryProvider)

data object Home

class MainActivity : ComponentActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContent {

            Scaffold { paddingValues ->

                val backStack = remember { mutableStateListOf<Any>(Home) }

                SinglePaneNavDisplay(
                    backStack = backStack,
                    modifier = Modifier.padding(paddingValues),
                    onBack = { backStack.removeLastOrNull() },
                    entryProvider = { key ->
                        when (key) {
                            is Home -> NavEntry(key) {
                                Column {
                                    Button(onClick = {
                                        backStack.add("Unknown")
                                    }){
                                        Text("Navigate to unknown")
                                    }
                                }
                            }
                            else -> NavEntry(Unit) { Text("Unknown route") }
                        }
                    }
                )
            }
        }
    }
}

Expected result:

• "Unknown route" is displayed

Actual result:

• Screen is blank and no error message is displayed in the logs