Hi. Does anyone having

java.lang.IllegalStateException: pending composition has not been applied

with compose 1.1.0? . Full stack trace in 🧵

And this starting to come back again after upgrading to navigation compose from 2.4.0-alpha09 to 2.4.1

java.lang.IllegalStateException: You cannot access the NavBackStackEntry's ViewModels after the NavBackStackEntry is destroyed.

On compose 1.2.0-alpha03 writing this give me a compilation error saying

@Composable invocations can only happen from the context of a @Composable function

. It wasn’t the case in 1.1.0. Is this expected?

buildAnnotatedString{
    withStyle(SpanStyle(....)){
        append(" • ${stringResource(key = "key", defaultValue = "Open now")}") //won't compile
    }
}
buildAnnotatedString {
    append(stringResource(key = "key", defaultValue ="Work time")) //compile
}

Hi, how to update composable when a list changes by

rember { mutableStateOf(mutableListOf<Int>())}

?

Hi, My testing need id for compose view, does anyone have idea how we can add id to compose view

Hi All, do you know if the

UpdateTransition

animation being interupted half way, does it still retain its velocity for it’s subsequent animation (that interrupt it)? I think it should, as that’s what

AnimateAsState

and

Animatable

behave like. For more context, I provide a full code and some GIF animation to illustrate this clearer in https://stackoverflow.com/questions/71170430/will-updatetransition-animation-maintain-its-running-velocity-when-if-being-chan

My Espresso tests started flaking when I added the

@get:Rule
val composeTestRule = createAndroidComposeRule<MainActivity>()

Hi guys, I have been working on a form library for Jetpack compose and I have a first release. It would be awesome if you could give it a try and any feedback would be of great help.

Hi all, I am working with Jetpack compose and not able to use ViewModel properly. Here is problem: I Know we can not @inject a class inside @composable function so I decided to @Inject BatteryBroadcast class in MainActivity and pass data from that class to the ViewModel.

@AndroidEntryPoint
class MainActivity : ComponentActivity() {

    @Inject
    lateinit var batteryBroadcast: BatteryBroadcast

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

                val homeViewModel = hiltViewModel<HomeViewModel>()
                lifecycle.addObserver(batteryBroadcast)
                homeViewModel.setBatteryProfileData(batteryBroadcast.dataFlow)

                // A surface container using the 'background' color from the theme
                Surface(color = MaterialTheme.colors.background) {
                    BatteryAlarmGoldApp()
                }
            }
        }
    }
}

Now I want to use the same ViewModel in my compose to access that data. I am using NavHost for that currently

fun NavGraphBuilder.homeNavGraph(
    navController: NavHostController
) {
    navigation(startDestination = Screen.HomeScreen.route, route = HOME_ROUTE) {
        composable(Screen.HomeScreen.route) {
            val homeBackStackEntry = remember { navController.getBackStackEntry(HOME_ROUTE) }
            val homeViewModel: HomeViewModel = hiltViewModel(homeBackStackEntry)

            HomeScreen(
                navController = navController,
                viewModel = homeViewModel
            )
        }
        composable(Screen.SelectRingtoneScreen.route) {
            val homeBackStackEntry = remember { navController.getBackStackEntry(HOME_ROUTE) }
            val homeViewModel: HomeViewModel = hiltViewModel(homeBackStackEntry)

            RingtoneScreen(
                viewModel = homeViewModel
            )
        }
    }
}

Or there is any batter solution to achieve the same please suggest me.

Hi all, I have a very strange problem with my

LazyColumn

. I am updating the menuList

State

in the ViewModel, the view recomposes but the debugger gets to LazyColumn and then stops, which means the children aren’t redrawn with the new data. Any ideas why? Thanks! MyView:

val menuList = viewModel.menuData.observeAsState()

LazyColumn() {
                items(menuList.value.size) { i->
                    MenuItem(menuList.value[i])
                }
}

MyViewModel:

private var menu: MenuUiState? = null
val menuData: SingleLiveEvent<MenuUiState> by lazy { SingleLiveEvent() }

// ...
menu?.sections?.forEach {
    //update menu properties here
}
menuData.value = menu?.copy()

I am having an issue with scoping my ViewModel to nested graph, the ViewModel is getting initilalized again, but the ViewModel scoped with screen composable survives.

as we know the

SideEffect

gets triggered on every recomposition so it works fine in the code below(triggered only once when

MainScreen

starts composition), but if I uncomment the

LaunchedEffect

the

SideEffect

block will get triggered whenever the

count

state changes, while if I comment the

LaunchedEffect

block it will not. why?

Is it possible to disable the text selection handles that show up in

TextFields

after a long press?

DisableSelection

exists and works for

Text

, but not

TextField

.

I tried to search for the answer but couldn't find it. How can I run some method every time I enter the screen for one time?

when I use

BottomSheetScaffold

it's

content

seems to "steal" clicks even if it's empty. View below this scaffold doesn't receive them. is there an option to make them pass through

content

?

Is there any Android Talkback engineers on here. I have a couple really big bugs IMO. Wanted to ensure the engineers got it. I emailed disability-support@google.com and they said they were looking into it. But wanted to also try here. In the comments I'll leave stackoverflow posts with videos and descriptions. LMK if there is a better place to communicate this or if the email is the best.

Is it possible to prevent an AndroidView from recomposing if a parent node recomposes? I have an AndroidView wrapping a camera2 PreviewView to display the camera feed. When a parent node recomposes I see that the PreviewView blinks black, which tells me that the view is being recreated.

What’s the actual purpose of

consumePositionChange()

(link)? 🤔

There seems to be a general problem with Compose in that a lot of times it exposes state as a regular type, and its `State`fulness is implicit. For example, compose-desktop has

WindowState.position

of type

WindowPosition

and

WindowStateImpl

implements it as

override var position by mutableStateOf(position)

but from just looking at the

WindowState

interface, there’s no way for you to know that

position

can be observed. Wouldn’t it better if the type of

WindowState.position

was

MutableState<WindowPosition>

?

Starting to become mad at debugging state recomposition. I'm using `

val playlistEntriesItems = remember(playlistEntries) {
    Log.e("AAA", "Update entries")
    playlistEntries.toMutableStateList()
}

Then use that state list in a LazyColumn. All works correctly and change to items order properly triggers recomposition. If that function is called again with a new playlistEntries the state is properly updated, but then the LazyColumn no more react on the changes. Am I missing something obvious?

I'm evaluating switching existing code from the Android View library to compose. One feature of the app was implemented in C (now kotlin/native after I refactored it) and writes raw RGBA data to a surface using the NDK's ANativeWindow. Does Compose have something equivalent, or would I need to use platform interop with a TextureView like I have now?

Hi guys I want to show a timer in items of a

LazyRow

:

val timerState = produceState(
    initialValue = TimerCounter(0L, 0L, 0L),
    key1 = product.id,
    producer = {
        withContext(Dispatchers.Default) {
            val endTimeInMillis =
                product.productDeal?.dealEndTime?.toTimeInMillis() ?: return@withContext
            val endTimeInSeconds = endTimeInMillis / 1000
            while (isActive) {
                val currentTimeInSecond = System.currentTimeMillis() / 1000
                if (endTimeInSeconds < currentTimeInSecond) {
                    value = TimerCounter(0L, 0L, 0L)
                    return@withContext
                }
                var reminders: Long
                val durationInSeconds = endTimeInSeconds - currentTimeInSecond
                val remainDays = durationInSeconds / DAY_IN_SECONDS
                reminders = durationInSeconds % DAY_IN_SECONDS
                val remainHours = ((reminders / HOURS_IN_SECONDS)) + (remainDays * 24)
                reminders %= HOURS_IN_SECONDS
                val remainMinutes = reminders / MINUTE_IN_SECOND
                val remainSecond = reminders % MINUTE_IN_SECOND
                value = TimerCounter(remainHours, remainMinutes, remainSecond)
                delay(1000)
            }
        }
    }
)

the above code is in composable which shows list item. is this a right approach? in case not, which

Effect

should?

Why is Compose's

Card

default elevation different from

CardView

? In a mixed app, this makes the cards looks different, which looks especially bad in layouts that have both.

How can I get a string resource in an instrumented test without using

createAndroidComposeRule()

? I do not want or need to load my app’s main activity. That would load all of my application content, and this is a Unit Test for a single composable. But I need to get a string resource to test with.

Hi all, i have two custom SurfaceView representing 2 videos

Row {
        AndroidView(factory = { context -> CustomView(context, "A") }, update = {})
        AndroidView(factory = { context -> CustomView(context, "B") }, update = {})
        Button(onClick = { swapViews() }) {
            Text(text = "Swap view")
        }
    }

swapViews()

should swap both views. but it looks like i have to manually remove each view from parent. Should i call

removeView()

in each

update{}

? here is the error i am getting

java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.`

I have an app written fully with compose,i working about how to implement native ads in compose but i cant.Someone can help me?

Hello, im trying to have a AnimatedVisiblity composable inside a Box, which is nested inside a Column like this:

Column {
        Box {
           AnimatedVisibility(visible = true) {
               Text("test")
           }
        }
    }

This results into an error:

'fun ColumnScope.AnimatedVisibility(visible: Boolean, modifier: Modifier = ..., enter: EnterTransition = ..., exit: ExitTransition = ..., label: String = ..., content: AnimatedVisibilityScope.() -> Unit): Unit' can't be called in this context by implicit receiver. Use the explicit one if necessary

The provided fix from IDE is to annotate the AnimatedVisibility with

Column {
        Box {
            this@Column.AnimatedVisibility(visible = true) {
                Text("test")
            }
        }
    }

Then everything works fine. The question is why is this necessary? Is this the correct fix? Why cant I call this composable like every other composable?

What android developers actually want in Compose? -Live Relaoding (such a haslte building app again and again) -Drag , drop code creation (similar to Swift UI for less time spent on ui through code) -Need Attributes and Palette Window support for composables as well with drag drop -All recycler view features in Column, Row Widgets

Has anyone used

contentType

in

LazyColumn

? I’m trying to implement a multi type List, but I’m facing serious performance issue