IssueTracker

Component used: Navigation Version used: navigation-compose:2.6.0-alpha08 Devices/Android versions reproduced on: Pixel 7 / Android 13

Since upgrading to compose navigation alpha07 (and 8) we are seeing a crash when using a bottom menu.

FATAL EXCEPTION: main
Process: nl.esites.emptytest, PID: 9221
java.util.NoSuchElementException: ArrayDeque is empty.
	at kotlin.collections.ArrayDeque.removeLast(ArrayDeque.kt:163)
	at androidx.navigation.NavController.launchSingleTopInternal(NavController.kt:1850)
	at androidx.navigation.NavController.navigate(NavController.kt:1811)
	at androidx.navigation.NavController.navigate(NavController.kt:1774)
	at androidx.navigation.NavController.navigate(NavController.kt:2174)
	at androidx.navigation.NavController.navigate$default(NavController.kt:2169)
	at androidx.navigation.NavController.navigate(NavController.kt:2154)
	at nl.esites.emptytest.ComposableSingletons$MainActivityKt$lambda-1$1$1$1$2$1$1.invoke(MainActivity.kt:81)
	at nl.esites.emptytest.ComposableSingletons$MainActivityKt$lambda-1$1$1$1$2$1$1.invoke(MainActivity.kt:79)
	at androidx.compose.foundation.ClickableKt$clickable$4$gesture$1$1$2.invoke-k-4lQ0M(Clickable.kt:167)
	at androidx.compose.foundation.ClickableKt$clickable$4$gesture$1$1$2.invoke(Clickable.kt:156)
	at androidx.compose.foundation.gestures.TapGestureDetectorKt$detectTapAndPress$2$1.invokeSuspend(TapGestureDetector.kt:255)
	at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)

Attached is a sample project, but the core to recreate this issue is:

sealed class Screen(val route: String, val label: String) {
    object Screen1 : Screen("screen_1_route", "screen 1")
    object Screen2 : Screen("screen_2_route", "screen 2")
}

class MainActivity : ComponentActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContent {
            EmptyTestTheme {
                Surface(
                    modifier = Modifier.fillMaxSize(),
                    color = MaterialTheme.colors.background
                ) {
                    val items = listOf(Screen.Screen1, Screen.Screen2)
                    val navController = rememberNavController()

                    Column(
                        modifier = Modifier.fillMaxSize()
                    ) {
                        NavHost(
                            navController = navController,
                            startDestination = Screen.Screen1.route,
                            modifier = Modifier.fillMaxWidth().weight(1f)
                        ) {
                            composable(route = Screen.Screen1.route) {
                                Box(modifier = Modifier.fillMaxSize()) {
                                    Text(
                                        text = Screen.Screen1.label,
                                        modifier = Modifier.clickable {
                                            // !! REMOVING THIS LINE WILL "FIX" THE CRASH !!
                                            navController.popBackStack()
                                        }
                                    )
                                }
                            }
                            composable(route = Screen.Screen2.route) {
                                Box(modifier = Modifier.fillMaxSize()) {
                                    Text(
                                        text = Screen.Screen2.label,
                                    )
                                }
                            }
                        }

                        Row(
                            modifier = Modifier.fillMaxWidth().height(72.dp)
                        ) {
                            val navBackStackEntry by navController.currentBackStackEntryAsState()
                            val currentDestination = navBackStackEntry?.destination

                            items.forEach { screen ->
                                val selected = currentDestination?.hierarchy?.any { it.route == screen.route } == true
                                Box(
                                    modifier = Modifier
                                        .fillMaxHeight()
                                        .weight(1f)
                                        .clickable {
                                            navController.navigate(screen.route) {
                                                popUpTo(navController.graph.findStartDestination().id)
                                                launchSingleTop = true
                                            }
                                        }
                                ) {
                                    Text(
                                        text = screen.label,
                                        color = if (selected) MaterialTheme.colors.primaryVariant else MaterialTheme.colors.onBackground,
                                        modifier = Modifier.align(Alignment.Center)
                                    )
                                }
                            }
                        }
                    }
                }
            }
        }
    }
}