Feeling really dumb. Can't get text to center inside of a row. Code inside the thread.

Hello, I'm on Canary 9 and I'm not getting the

Code | Split | Design

selector when using the

@Preview

annotation. What might be the cause? On what is this showing up based upon? Here's how it looks like on my machine. EDIT: Yes, I tried restarting the IDE.

Speed Round?

Hello! The latest Jetpack Compose minor release, beta02, is here. You can get it now from Google’s Maven Repository. Release notes are available at https://developer.android.com/jetpack/androidx/versions/all-channel. There are still opportunities to join the #AndroidDevChallenge at http://d.android.com/dev-challenge!

Somewhat related... has anyone been able to use download the kotlin 1.4.31 plugin in Android Studio canary 9?

Why's that every time a navigation composable that's on the bottom navigation creates a new view model when the user clicks on the bottom navigation item i'm using

implementation "androidx.hilt:hilt-navigation-compose:1.0.0-alpha01"

and

val viewModel: LatestBooksViewModel = hiltNavGraphViewModel(navBackStackEntry)

i don't want to create a new view model each time the user clicks the bottom navigation since it's just wasting API calls

Is there a purely Compose way to play Video? I see a lot of people use AndroidView to use the ExoPlayer or some other android Surface class stuff. Is there no 'compose' way?

How do derivatives of compose code work in terms of licensing? For example, if I took code from one of the Compose samples in AOSP and improved it / added features, and want to make an open sourced library out of it, do I need to do anything special? Is this the wrong channel for that topic?

Will

TextField

support `AnnotatedString`s like

Text

? Doing so would make it possible to implement wysiwyg rich text editors.

Using Compose in Android Studio, I pretty much have to clean & build every time, or the app crashes on launch:

java.lang.NoSuchMethodError: No direct method <init>(Ljava/lang/String;Ljava/util/List;Ljava/lang/String;Lkotlin/jvm/functions/Function3;)V in class Lcom/acompany/weightr/features/Screen; or its super classes

..

If I make any code edits and try to deploy the app, I get this crash almost every time. Cleaning, building and running again always fixes the issue. Has anyone else encountered this, and is it tracked anywhere?

Cannot resolve package

androidx.compose.ui.util

. Unresolved reference:

fastMap

,

lerp

,

fastForEach

etc. Compose 1.0.0-beta2, Android Studio Canary 9. Anybody got the same problem?

I’m having an issue with beta02 and AndroidView and scrolling (see video below). When I scroll the view scrolls faster than everything else

I want to update

compose

to

beta02

, but when I increment the version I get this error? I am not seeing any

Kotlin

version update, I checked the latest updates. I am using latest AS Canary ?

Getting

java.lang.ClassCastException: androidx.compose.ui.platform.ParcelableMutableStateHolder cannot be cast to androidx.compose.runtime.MutableState

after 1.0.0-beta02 when using

rememberSaveable

without custom saver, full stacktrace in thread

In the Kdoc documentation there are numerous

@sample

references

* @sample androidx.compose.material.samples.CardSample

But they are not working for me and I can't see the samples. Is there a dependency that I'm missing? There was nothing in the google maven

I published the first build of a multiplatform compose color picker based on the sample from AOSP. I'm sure there's a lot that can be improved, so feedback would be greatly appreciated 😄 https://github.com/eygraber/compose-color-picker

Hello folks! For the ones here that tried to use Compose in an Android Library Module, were you successful, or did you encounter issues? If not, I'm also interested in the exact issues you had.

facing an issue with updating to beta02

Could not GET '<https://dl.google.com/dl/android/maven2/androidx/compose/compiler/compiler/1.0.0-beta02/compiler-1.0.0-beta02.pom>'. Received status code 503 from server: Service Unavailable

Disable Gradle 'offline mode' and sync project

Does anyone getting

java.lang.IllegalArgumentException: Failed requirement

at

MeasureAndLayoutDelegate.kt:194

after beta02? full stacktrace in thread

Hi : I am trying to build a dynamic chess board (with drag and drop), but in my early stage, it is not reactive.

Hi, I am trying to add Compose Dependencies inside a

Kotlin Multiplatform Module

where all compose related code would be inside

androidMain

but although there are no code error, and the app gets successfully built, the application crashes when referencing a

Composable

defined inside the

KMM

Module. Here is the Error:

java.lang.NoSuchMethodError: No static method Sample(Landroidx/compose/runtime/Composer;I)V in class Lph/kmm/feature/compose/SampleKt; or its super classes (declaration of 'com.kmm.compose.SampleKt' appears in /data/app/com.kmm.compose-TrHVyznV0bVt58iksPYp3g==/base.apk!classes7.dex)

using

beta02

I'm getting:

ViewTreeLifecycleOwner not set for this ComposeView. If you are adding this ComposeView to an AppCompatActivity, make sure you are using AppCompat version 1.3+.

Anyone else getting

java.lang.IllegalStateException: ViewTreeLifecycleOwner not found from DecorView@8896299[MainActivity]

after upgrading to beta02?

I am working on an Google TV/Android TV app. The focus system is only working when i add the focusOrder modifier to the items like in this code: https://cs.android.com/androidx/platform/frameworks/support/+/0a6f6ab5001b4885cf6f47[…]/java/androidx/compose/ui/demos/focus/CustomFocusOrderDemo.kt. Which is not really practical when working with Lazy lists.

Hi! The Jetpack Compose documentation insists quite a lot that

@Composable

functions should not block nor suspend, and says that an event (a button click, for example) should be transmitted ‘up' and dealt with there. I don't really understand what this means or how it works in practice, and I can't find a page that describes that... Assuming I have a simple function (that simulates a network call):

suspend fun networkGet(id: Int): String {
  delay(2000)
  return "some interesting value"
}

I would want to have a UI that has a button to launch the request, which then displays the results (whenever they arrive). I guess the

Composable

function should look like this:

@Composable
fun SomeView(results: List<String>, onRequest: (Int) -> Unit) {
  Column {
    Button(onClick = { onRequest(5) } {
      Text("Load next")
    }
    for (result in results) {
      Text(result)
    }
  }
}

So far it makes sense to me, but I don't understand how the call site would handle the event.

I just ran across this doc which gives official androidx guidance around mocking: https://android.googlesource.com/platform/frameworks/support/+/androidx-main/docs/do_not_mock.md It nominally applies to the androidx codebase, but I'd encourage external developers to adopt similar thinking, as it really cleans up both your APIs and ensures you're testing the right contracts.

Does anyone else notice that Compose takes some time to "warm up" when used in Android Views? In our project we're relying on Android interop to integrate Compose into existing fragments, and first screen open produces a lot of skipped frames/lag, but consequent launches are a lot more smooth I'll try to isolate it and create a repro, but just wondering if it's an us problem, or a Compose internals problem

I find myself sorely missing ConstraintLayout in Compose, but I have some concerns about using the Compose version of it. Anyone else feel the same way? More details in the thread.

I've been trying to debug my code all this afternoon, but without success. Meanwhile, I've updated compose to the

1.0.0-beta02

Does not run on my device any more