I heard that JetBrains has started experimenting on Compose for iOS. Do you have evidence of this? Twitter, Slack posts?

Running

Preview

composable on real device from

android library module

does not work. Is this intended behavior?

rememberSaveableStateHolder() will return a SaveabelStateRegistry which is restricted to store only types that can be saved as Bundle. Is there an alternative without restriction? I do not need persistence storage in my navigation solution.

Is there any way to create a full width Item in LazyVerticalGrid? which configure as ?

LazyVerticalGrid(
    modifier = Modifier.fillMaxSize(),
    cells = GridCells.Fixed(column),
    contentPadding = PaddingValues(top = Constants.Padding8dp)
) {

I am upgraded to: Kotlin 1.4.30 Compose 1.0.0-alpha12 NavigationCompose 1.0.0-alpha07 I get this error:

java.lang.NoClassDefFoundError: Failed resolution of: Landroidx/activity/compose/LocalOnBackPressedDispatcherOwner;
    at androidx.navigation.compose.NavHostKt.NavHost(NavHost.kt:83)
    at androidx.navigation.compose.NavHostKt.NavHost(NavHost.kt:59)
    at myapp.android.NavigationKt.Navigation(Navigation.kt:22)

any idea?

Class 'androidx.ui.tooling.preview.Preview' is compiled by an unstable version of the Kotlin compiler and cannot be loaded by this compiler

I created an app in compose for AndroidTV. I’m now ditching compose and moving back to the Android View’s to hopefully get better performance. Android TV’s are basically just super low-end Android devices. I’ve tried to identify anything I’m doing wrong, and even tried to isolate changes into individual widgets, but I still see long pauses, and chugging in animations. I’m curious if it’s known how Compose performs in relation to standard Android View’s. It seems slower to me. It’s still in alpha though, so I’m curious if performance optimizations have started to happen.

There is a new artifact added to compose dependencies i.e. androidx.activity:compose-activity? setContent has been moved in the recent alpha to the mentioned artifact, but the artifact is not mentioned yet in the list of dependencies in the docs.

I started seeing this in the

CircularProgressIndicator

in alpha12. The animation seems to run about 2/3 of the way, then restart. This used to look correctly in earlier versions, and

LinearProgressIndicator

doesn’t have this problem. Is this a known issue, or should I report it?

I was opening Compose samples, and in Crane I am getting this error dialog, how to resolve?

I am trying to use

BottomSheetScaffold

and encountered one problem. I do not know how to open the bottomSheet to certain value. Example: 1. The view shows the list 2. User clicks the element in list 3. BottomSheet opens to certain height 4. User drags the sheet up 5. Sheet reveals to full screen I tried to use BottomSheetScaffoldState.bottomSheetState.expand { }, but this function always open the sheet to full height. I was searching for something like:

BottomSheetScaffoldState.bottomSheetState.expandByHalf()

or

BottomSheetScaffoldState.bottomSheetState.setAnchor(200.dp)

or similar to this, but no luck. Anyone knows how to make a mid step for BottomSheet?

hey folks, what is the best "compose" way of calling suspended functions to return data for display, should I still use the

ViewModel

approach or is there a better way that still has the same benefits (such as surviving state changes) of using VM approach?

Intermittently when I open my app from the background it crashes, is this a known issue, is there anything I can do to avoid it?

java.lang.NullPointerException
        at androidx.compose.foundation.gestures.DragGestureDetectorKt.verticalDrag-jO51t88(DragGestureDetector.kt:777)

Anyone else having this issue?

java.lang.NoSuchFieldError: Companion
	at androidx.compose.compiler.plugins.kotlin.ComposeComponentRegistrar$Companion.registerProjectExtensions(ComposePlugin.kt:189)
	at androidx.compose.compiler.plugins.kotlin.ComposeComponentRegistrar.registerProjectComponents(ComposePlugin.kt:119)
	at org.jetbrains.kotlin.cli.jvm.compiler.KotlinCoreEnvironment$Companion.registerExtensionsFromPlugins$cli(KotlinCoreEnvironment.kt:566)
	at org.jetbrains.kotlin.cli.jvm.compiler.KotlinCoreEnvironment$ProjectEnvironment.registerExtensionsFromPlugins(KotlinCoreEnvironment.kt:129)
	at org.jetbrains.kotlin.cli.jvm.compiler.KotlinCoreEnvironment.<init>(KotlinCoreEnvironment.kt:169)
	at org.jetbrains.kotlin.cli.jvm.compiler.KotlinCoreEnvironment.<init>(KotlinCoreEnvironment.kt:109)
	at org.jetbrains.kotlin.cli.jvm.compiler.KotlinCoreEnvironment$Companion.createForProduction(KotlinCoreEnvironment.kt:421)
	at org.jetbrains.kotlin.cli.jvm.K2JVMCompiler.createCoreEnvironment(K2JVMCompiler.kt:226)
	at org.jetbrains.kotlin.cli.jvm.K2JVMCompiler.doExecute(K2JVMCompiler.kt:152)
	at org.jetbrains.kotlin.cli.jvm.K2JVMCompiler.doExecute(K2JVMCompiler.kt:52)
	at org.jetbrains.kotlin.cli.common.CLICompiler.execImpl(CLICompiler.kt:88)
	at org.jetbrains.kotlin.cli.common.CLICompiler.execImpl(CLICompiler.kt:44)
	at org.jetbrains.kotlin.cli.common.CLITool.exec(CLITool.kt:98)
	at org.jetbrains.kotlin.incremental.IncrementalJvmCompilerRunner.runCompiler(IncrementalJvmCompilerRunner.kt:371)
	at org.jetbrains.kotlin.incremental.IncrementalJvmCompilerRunner.runCompiler(IncrementalJvmCompilerRunner.kt:105)
	at org.jetbrains.kotlin.incremental.IncrementalCompilerRunner.compileIncrementally(IncrementalCompilerRunner.kt:249)
	at org.jetbrains.kotlin.incremental.IncrementalCompilerRunner.access$compileIncrementally(IncrementalCompilerRunner.kt:38)
	at org.jetbrains.kotlin.incremental.IncrementalCompilerRunner$compile$2.invoke(IncrementalCompilerRunner.kt:80)
	at org.jetbrains.kotlin.incremental.IncrementalCompilerRunner.compile(IncrementalCompilerRunner.kt:92)
	at org.jetbrains.kotlin.daemon.CompileServiceImplBase.execIncrementalCompiler(CompileServiceImpl.kt:602)
	at org.jetbrains.kotlin.daemon.CompileServiceImplBase.access$execIncrementalCompiler(CompileServiceImpl.kt:93)
	at org.jetbrains.kotlin.daemon.CompileServiceImpl.compile(CompileServiceImpl.kt:1644)
...

I’m using Android Studio Arctic Fox | 2020.3.1 Canary 6 with these lib versions…

prev we used vectorResource(R.drawable.something) in Image() composabe, now it is deprecated how to load image/svg from drawables now?

I have a

LazyColumn

inside an

AlertDialog

and the title and the buttons of the dialog go outside the screen when the content in

LazyColumn

is large enough. Is there a way to have some padding around the dialog so the title and the buttons are always visible?

Modifier.padding

on the

AlertDialog

doesn't work

Is there is any to achieve Weight like behavior in LazyColumn I have 1 item taking 100 dp and I want 2 item to fill the remaining space not fill the entire screen?

Scroll lags with

ScrollableTabRow

after a swipe using alpha12. In alpha9 the scroll was ok. BottomSheetScaffold has the same weird behavior on swipe edit: I've created an issue in the tracker

vectorResource

was deprecated with recommendation to use

painterResource

which creates Painter. How to convert

Painter

to

ImageVector

?

I'm using compose for desktop and I can't seem to find DropdownMenu. I am trying to make a drop down box or combo box. Is there a different component I should be using?

How can I modify the paint object used by a painter? I have a

BitmapPainter

and I need to disable the antialiasing

Is it possible to get parent Box width?

Passing keys all round is very inconvenient and error prone, is there a better way to perform item list recompositions?

Is this a known issue? When passing enabled = false to a BasicTextField that was previously focused.

java.lang.IllegalStateException: Use active SlotWriter to determine anchor location instead
        at androidx.compose.runtime.SlotTable.anchorIndex(SlotTable.kt:198)
        at androidx.compose.runtime.Anchor.toIndexFor(SlotTable.kt:466)
        at androidx.compose.runtime.Composer.invalidate$runtime_release(Composer.kt:1927)
        at androidx.compose.runtime.RecomposeScopeImpl.invalidateForResult(RecomposeScopeImpl.kt:111)
        at androidx.compose.runtime.RecomposeScopeImpl.invalidate(RecomposeScopeImpl.kt:117)
        at androidx.compose.foundation.text.CoreTextFieldKt$CoreTextField$onValueChangeWrapper$1.invoke(CoreTextField.kt:234)
        at androidx.compose.foundation.text.CoreTextFieldKt$CoreTextField$onValueChangeWrapper$1.invoke(Unknown Source:3)
        at androidx.compose.foundation.text.TextFieldDelegate$Companion.onBlur$foundation_release(TextFieldDelegate.kt:283)
        at androidx.compose.foundation.text.CoreTextFieldKt.notifyTextInputServiceOnFocusChange(CoreTextField.kt:664)
        at androidx.compose.foundation.text.CoreTextFieldKt.access$notifyTextInputServiceOnFocusChange(Unknown Source:0)

Spent some of the weekend playing with an idea for a state management solution that takes advantage of all compose’s handy tricks. This was my first time playing with KSP and I didn’t bother trying to make it pretty, but I have a working demo enough to get a feel for it. I am pretty sure this violates some Compose best practices too 🙈 Anyway, maybe there’s some parts of this that could be salvaged for a real library. https://twitter.com/zachklipp/status/1361472794312105987?s=21 https://github.com/zach-klippenstein/compose-model

How would I use

BottomSheetScaffold

with the navigation component? My app consists of a typical bottom-tab layout which is using

Scaffold bottomBar = { .. }

like in the docs, but I want to launch bottom sheets from inside my tabs. The sheets should overlay on top of the bottom tabs and I would like to be able to call

navController.navigate(..)

to open them. Anyone know of any example apps which have achieved this?

Is there a standard or 3rd party collection of

Modifier.shortcuts

for text navigation?

Is

android:windowSoftInputMode="adjustResize"

and

Scaffold { padding ->

works properly together? Or there exists anther way to adjusting size?

Prev we used Modifier.align(SomeAlignment), I guess it is changed. how to align composable , specifically in Box? [SOLVED]