Why am I getting these errors after updating from the Compose version the project wizard starts you with to beta01?

What happened to ConstraintLayout in beta01?

I recall an older convo on here regarding pausing animations with

ManualAnimationClock

. In general what’s the declarative way to think about “freezing” and “resuming/reverting” animations, and are there any related APIs at the moment? Came across *Pausable*MonotonicFrameClock but seems like a lower level API 🤔

Can't resolve

setContent

in beta01. Search in slack doesn't show anyone with the same problem. Any ideas?

Now that beta01 is out, should we expect the same release cadence as with the alpha releases, i.e. every two weeks?

Compose provides wrappers around common image loading libraries? Where do I find that?

Is there is a way to see all items on the LazyColumn?

I know many people have congratulated the compose team on the beta milestone today. As someone that hasn't used it much but has tried to stay up to date (using this slack channel), this video about Lists in Compose () is truly mind blowing. • Displaying a list of items with just a forEach statement 🤯 • Convert that list to lazy list swapping a few characters 🤯 • Adding headers by to list items adding ~5 lines of code 🤯 • Convert those headers to sticky with a single keyword 🤯 • Animate button visibility on user scrolling with ~5 lines 🤯 I knew Compose was going to be great. I had no idea it was going to be this amazing. This is the highlight to my 2020/2021 and completely changes the game on how we build. The entire compose team (and anyone else that has had a hand in this) should feel beyond proud to deliver something this magnificent. 😛arty-parrot: Congrats! Hope you all can take a bit of a break and get some rest 😅

Hey So I'm wondering if there is anyway of finding the width (or height) of a component without implementing a custom layout to measure it? My use case is basically I want to have a lazy grid (which is just going to be lazy column with rows), but I need to chunk my images, so each row can fit perfectly with it's parent container, before going into the next one, luckly my images are fixed constant width, so all I need to do is figure out the width of the parent container, so i can calculate the amount i need to chunk it by, hopefully that expresses my use case and any solution to my problem would nice (hopefully without me having to implement my own lazy grid :P)

I see currently

NavHost()

already provides

ViewModelStoreOwner

,

LifecycleOwner

, and

SavedStateRegistryOwner

locals. Is there a function like

scopeViewModels(savedState: Bundle? = null, content @Composable () -> Unit)

that I can use that also scopes all the view models inside content and automatically clear them like

NavHost()

does? I want to use it for dialogs which does not make much sense with

NavHost()

What happened to TextField in beta:01

Is there easy way to achieve snapping (paging) like behavior in LazyRow?

Could you boldly clarify that compose beta doesn't mean ready-to-use? I see many voices where people think that it's now production ready. That's because there is this kind of google definition of stable which has established over the last year. By that definition beta is already stable but api changes can occur. But the compose beta seems to rather match the regular definition of beta.

Hey guys, all my tests started failing in compose beta 01 and by logging it with the

printToLog

method it seems that now there is an extra node in the compose hierarchy

|-Node #4 at (0.0, 171.0, 1080.0, 325.0)px
  SelectableGroup = 'kotlin.Unit'
  MergeDescendants = 'true'

Is this a planned change or a bug? (Posting more details in the thread)

Stuck with this runtime crash 😞 on beta01. Anyone else?

java.lang.NoSuchMethodError: No static method painterResource(I)Landroidx/compose/ui/graphics/painter/Painter; in class Landroidx/compose/ui/res/PainterResources_androidKt; or its super classes (declaration of ‘androidx.compose.ui.res.PainterResources_androidKt’ appears in /data/app/com.example.app.debug-bpEZigKD1QJBwWERJb9cjw==/base.apk)

Hi. I'm using

CoilImage

to show an image:

CoilImage(
            data = "",
            modifier = modifier,
            contentDescription = "",
            contentScale = ContentScale.Crop,
            loading = { CircularProgressIndicator(Modifier.align(Alignment.Center)) }
        )

But it not shows the image loaded from network () The error is:

Error(painter=null, throwable=kotlinx.coroutines.JobCancellationException: StandaloneCoroutine was cancelled; job=StandaloneCoroutine{Cancelled}@7155d16)

I have this in gradle file

implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:2.3.0"
implementation 'androidx.lifecycle:lifecycle-viewmodel-compose:1.0.0-alpha-02'

but still can’t find

viewModel()

function. What should I do?

Hello, when I tried to use Scaffold, I have gotten this error message, I can’t understand why.

What's the status of Kdoc on Compose code? I'm looking at some of the compose runtime code to understand how it works, and the

Composition

function mentions that

parent

is optional, and defaults to null, but the parameter neither has a default value, nor is nullable. Is that something to file a bug about, or is documentation still a WIP?

Hello guys. I was using AmbientAnimationClock, but with beta release I realize this object is removed. What can I use for this ?

After upgrading to newest beta01, ringing any bells? I have tried cleaning, I have even removed .gradle folder, nothing helps

java.lang.NoClassDefFoundError: Failed resolution of: Landroidx/compose/ui/platform/AndroidAmbientsKt;
        at androidx.navigation.compose.NavHostControllerKt.rememberNavController(NavHostController.kt:79)

I'm trying to migrate my pager implementation to using 1.0.0-beta01. The newly introduced

FlingBehavior

makes the code much better. However, as

performFling()

will not be called if there is no fling velocity, I can't figure out a way to snap to a page in that case. Is there any other way to correctly implement this behavior (

Modifier.swipeable

doesn't seem to fit)? If there is no, I think it's reasonable to call

performFling()

even if there is no fling velocity.

In contrast to ReactJS, Compose doesn't have a "virtual dom" that works by "diffing" the before and after UI in order to handle performance. I'm curious to know how "smart" Compose's system is. Are there any sources about how Compose handles efficient performance handling? Couldn't really find any articles about it.

I was using

Modifier.size(dp)

, and I tried to change its

size(dp)

again, but it doesnt get change, it fixes size with respect to the first value which we set, is this okay? I dont know, but felt weird and okay at same time

I may have missed this yesterday but was there mention of when it was hoped that Compose would be officially supported in non Canary version of AS

Do we know how to get the activity result back to the Composable. I'm opening an activity using an intent where i'm selecting a file. I wan to get that in back to the composable. Do we have something like onActivityResult

What's the best way to create a smooth alpha fade animation ? For example, I want my TopAppBar backgroundColor alpha to be updated while the user is scrolling. Depending of the scrolling speed, the animateFloatAsState isn't updated as much as wanted. I have to scroll very slowly to have something not too bad. Is there a better way ? Code & video of the animation in thread

Hi! Now that we have Compose Beta, do we have a date for Android Studio 4.2 to reach Stable*? I wanted to migrate our "design system prototype" to Compose Beta without customizations from my side (gradle plugin) but I did not want to break other developers using Android Studio 4.1 stable. Thank you.

Is there a way to “hide/show” a composable in the hierarchy without making it recompose? I’m hiding/showing an

AndroidView

with a

WebView

inside and every time it becomes visible again it will recompose and therefore reload the website. Any ideas how to get around this?