Reports in Crashlytics after upgrading to 6.12.0: Method addObserver must be called on the main thread

[sanskar10100]

We have started noticing an increasing number of Crash reports on Firebase Crashlytics since we bumped our com.google.maps.android:maps-compose version from 6.10.0 to 6.12.0 and 6.12.1

They're only happening on certain devices. The stacktrace is obfuscated, so there isn't a lot of data here, but generally it goes like this:

          Fatal Exception: java.lang.IllegalStateException: Method addObserver must be called on the main thread
       at m.abg.i(:com.google.android.gms.policy_maps_core_dynamite@233610105@233610102065.573949206.573949206:21)
       at m.abg.b(:com.google.android.gms.policy_maps_core_dynamite@233610105@233610102065.573949206.573949206:3)
       at m.dba.e(:com.google.android.gms.policy_maps_core_dynamite@233610105@233610102065.573949206.573949206:96)
       at com.google.android.gms.maps.internal.CreatorImpl.c(:com.google.android.gms.policy_maps_core_dynamite@233610105@233610102065.573949206.573949206:908)
       at com.google.android.gms.maps.internal.CreatorImpl.logInitialization(:com.google.android.gms.policy_maps_core_dynamite@233610105@233610102065.573949206.573949206:16)
       at com.google.android.gms.maps.internal.i.bp(:com.google.android.gms.policy_maps_core_dynamite@233610105@233610102065.573949206.573949206:75)
       at m.bbf.onTransact(:com.google.android.gms.policy_maps_core_dynamite@233610105@233610102065.573949206.573949206:21)
       at android.os.Binder.transact(Binder.java:1219)
       at com.google.android.gms.internal.maps.zza.zzc(com.google.android.gms:play-services-maps@@19.2.0:2)
       at com.google.android.gms.maps.internal.zze.zzm(com.google.android.gms:play-services-maps@@19.2.0:4)
       at com.google.android.gms.maps.MapsInitializer.initialize(com.google.android.gms:play-services-maps@@19.2.0:12)
       at com.google.android.gms.maps.MapsInitializer.initialize(com.google.android.gms:play-services-maps@@19.2.0:1)
       at com.google.maps.android.compose.internal.DefaultGoogleMapsInitializer$initialize$3.invokeSuspend(DefaultGoogleMapsInitializer.java:146)
       at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:34)
       at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:100)
       at kotlinx.coroutines.internal.LimitedDispatcher$Worker.run(LimitedDispatcher.java:124)
       at kotlinx.coroutines.scheduling.TaskImpl.run(Tasks.kt:89)
       at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.java:586)
       at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:820)
       at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:717)
       at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:704)

Device here was Samsung Galaxy M35 5G running Android 14.

Another from Samsung Galaxy A16 running Android 14:

          Fatal Exception: java.lang.IllegalStateException: Method addObserver must be called on the main thread
       at m.acj.k(:com.google.android.gms.policy_maps_core_dynamite@241110203@241110201042.615149234.615149234:21)
       at m.acj.b(:com.google.android.gms.policy_maps_core_dynamite@241110203@241110201042.615149234.615149234:3)
       at m.dec.e(:com.google.android.gms.policy_maps_core_dynamite@241110203@241110201042.615149234.615149234:113)
       at com.google.android.gms.maps.internal.CreatorImpl.d(:com.google.android.gms.policy_maps_core_dynamite@241110203@241110201042.615149234.615149234:920)
       at com.google.android.gms.maps.internal.CreatorImpl.logInitialization(:com.google.android.gms.policy_maps_core_dynamite@241110203@241110201042.615149234.615149234:60)
       at com.google.android.gms.maps.internal.i.bo(:com.google.android.gms.policy_maps_core_dynamite@241110203@241110201042.615149234.615149234:75)
       at m.bcw.onTransact(:com.google.android.gms.policy_maps_core_dynamite@241110203@241110201042.615149234.615149234:21)
       at android.os.Binder.transact(Binder.java:1219)
       at com.google.android.gms.internal.maps.zza.zzc(com.google.android.gms:play-services-maps@@19.2.0:2)
       at com.google.android.gms.maps.internal.zze.zzm(com.google.android.gms:play-services-maps@@19.2.0:4)
       at com.google.android.gms.maps.MapsInitializer.initialize(com.google.android.gms:play-services-maps@@19.2.0:12)
       at com.google.android.gms.maps.MapsInitializer.initialize(com.google.android.gms:play-services-maps@@19.2.0:1)
       at com.google.maps.android.compose.internal.DefaultGoogleMapsInitializer$initialize$3.invokeSuspend(DefaultGoogleMapsInitializer.java:146)
       at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:34)
       at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:100)
       at kotlinx.coroutines.internal.LimitedDispatcher$Worker.run(LimitedDispatcher.java:124)
       at kotlinx.coroutines.scheduling.TaskImpl.run(Tasks.kt:89)
       at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.java:586)
       at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:820)
       at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:717)
       at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:704)

I saw that there were updates to the initializer when bumping the version, so that might be it. We're also using com.google.maps.android:maps-compose-utils in our app.

Steps to reproduce

1. Have a Map Screen
2. Launch the app on certain devices

Code example

@Composable
fun NearbyDiscoveryFeature() {
    val context = LocalContext.current
    var location by remember { mutableStateOf<Location?>(null) }
    var isLoading by remember { mutableStateOf(true) }
    var hasLocationPermission by remember {
        mutableStateOf(
            context.checkSelfPermission(Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED
        )
    }

    val locationPermissionLauncher = rememberLauncherForActivityResult(
        contract = ActivityResultContracts.RequestPermission(),
        onResult = { isGranted ->
            hasLocationPermission = isGranted
            if (!isGranted) {
                isLoading = false
            }
        }
    )

    LaunchedEffect(hasLocationPermission) {
        if (hasLocationPermission) {
            // Simulate a network call to fetch location
            delay(1500)
            location = createFakeLocation()
            isLoading = false
        } else {
            locationPermissionLauncher.launch(Manifest.permission.ACCESS_FINE_LOCATION)
        }
    }

    Box(modifier = Modifier.fillMaxSize(), contentAlignment = Alignment.Center) {
        when {
            isLoading -> {
                CircularProgressIndicator()
            }
            hasLocationPermission -> {
                LocationMapView(
                    location = location,
                    onMapClicked = { /* Handle map click */ }
                )
            }
            else -> {
                Column(horizontalAlignment = Alignment.CenterHorizontally) {
                    Text(
                        text = "Location permission is required to use this feature.",
                        textAlign = TextAlign.Center,
                        modifier = Modifier.padding(16.dp)
                    )
                    Button(onClick = { locationPermissionLauncher.launch(Manifest.permission.ACCESS_FINE_LOCATION) }) {
                        Text("Grant Permission")
                    }
                }
            }
        }
    }
}

@Composable
fun LocationMapView(
    location: Location?,
    modifier: Modifier = Modifier,
    onMapClicked: () -> Unit,
) {
    val cameraPositionState = rememberCameraPositionState {
        val targetLocation = location?.let { LatLng(it.latitude, it.longitude) } ?: LatLng(0.0, 0.0)
        position = CameraPosition.fromLatLngZoom(
            targetLocation,
            if (location == null) 1f else 15f
        )
    }

    Box(
        modifier = modifier
            .clip(RoundedCornerShape(8.dp))
            .clickable { onMapClicked() }
    ) {
        GoogleMap(
            modifier = Modifier.fillMaxSize(),
            cameraPositionState = cameraPositionState,
            properties = MapProperties(
                isMyLocationEnabled = location != null
            ),
            uiSettings = MapUiSettings(
                myLocationButtonEnabled = false,
                zoomControlsEnabled = false,
                mapToolbarEnabled = false,
                scrollGesturesEnabled = false,
                compassEnabled = false,
                indoorLevelPickerEnabled = false,
                rotationGesturesEnabled = false,
                scrollGesturesEnabledDuringRotateOrZoom = false,
                tiltGesturesEnabled = false,
                zoomGesturesEnabled = false,
            ),
            onMapClick = { onMapClicked() },
        )

        Box(
            modifier = Modifier
                .fillMaxSize()
                .background(
                    brush = Brush.verticalGradient(
                        colors = listOf(Color.Transparent, Color.Black),
                    ),
                    alpha = 0.5f
                )
        )

        Button(
            modifier = Modifier
                .align(Alignment.BottomStart)
                .padding(16.dp),
            onClick = { onMapClicked() }
        ) {
            Text("Open Map")
        }
    }
}

private fun createFakeLocation(): Location {
    return Location("fake_provider").apply {
        latitude = 34.0522
        longitude = -118.2437
    }
}

[kikoso]

Hi @sanskar10100 ,

Is 6.12.0 the first version where this issue is being observed? How is the range of devices where this is happening? (i.e., Samsung, Android 14...)

[barry-irvine]

I'm seeing it on a Galaxy A71, Android 13. I hadn't seen it prior to upgrading to 6.12.1

[sanskar10100]

@kikoso we upgraded directly from 6.10.0 to 6.12.0, so it could be 6.11.0 as well. We haven't been able to reproduce this internally, because we don't have access to devices that this is occurring on, so we only have Crashlytics reports to go on.

List of Devices where we have this issue reported:

• Android 13
  • Lenovo Tab M8 (4th Gen)
  • Oppo A74 5G
• Android 14
  • Galaxy A05
  • Galaxy Tab S7 FE
  • Galaxy Tab A7 Lite
  • Galaxy A13
  • Galaxy A23
  • Galaxy A16
  • Galaxy A06

[dkhawk]

Thank you for the report. We are working on a long term solution to the problem.

[kikoso]

Hi @sanskar10100 , @barry-irvine .

We released a version with a potential fix for this issue. Would you be able to check on your dashboard if this keeps being reported?

Thanks!