Any chance we could use drawLayout with Dialogs in future? I'm trying to implement Overshoot animation with Dialogs

Transition(
            definition = transDef,
            initState = AnimState.StartScale,
            toState = AnimState.EndScale
        ) { state ->
            Box(
                modifier = Modifier.drawLayer(
                    scaleX = state[scale],
                    scaleY = state[scale]
                )
            ) {
                Dialog(onCloseRequest = onDismiss) {
                ...

This doesn't work and I hope this works in future 🙂 And using

Dialog(onCloseRequest = onDismiss) {
                    Surface(
                        shape = MaterialTheme.shapes.medium, modifier = Modifier.drawLayer(
                            scaleX = state[scale],
                            scaleY = state[scale]
                        )
                    ) {
                    ...

Just overshoots inside of the dialog not the dialog it self.

Is it possible (or planned) to draw a

Text

with outline? This was done with

Paint.Style.STROKE

, but there's no painter on

Text

parameters. I want to draw a text in white with a black border (like a shadow, but without blur)

Are coroutines supported in dev10 and does kapt play well with compose in this release?

yeah, i’d still like to do that. Right now there are still parts of the runtime APIs that would make this possible that are getting changed significantly, so i’d rather wait until those are closer to a “final” state

Is there an easy way to rotate an Image in compose?

Which is the best way to start an activity from a composable function and receives a result?

Are kotlin compiler sources of version 1.3.70 used for compose available anywhere? I am especially curious regarding solution for issues reported here.

I am updating an android app I have had out there a long time. (Not using Compose in it yet, want to.. 🙂 ).. Question is, I am running this app on a Pixel4XL and it was originally written a while ago. I have a screen where you use a slider to set a target amount and it’s too small. Just read a bunch of stuff and it seems like I literally have to make a duplicate layout for higher density phones? I guess that’s what I have to do? my other question is how is Compose going to handle this? Thanks.

Regarding testing with the `AndroidComposeTestRule`: What is the reason that I cannot declare

<activity android:name="androidx.activity.ComponentActivity" />

in the

androidTest/AndroidManifest.xml

but have to do it in

main/AndroidManifest.xml

? 🤔

Do we need to avoid deep "view" hierarchy in compose as we usually do with the native android view system? https://developer.android.com/training/improving-layouts/optimizing-layout

Hey, i was trying out

Transition

in Compose, and had couple of questions. First is about

transitionDefinition

- i see that it’s an equivalent of value animator (correct me if i’m wrong). Is there a way to set the duration to it, and delay before the start? Second is about the

Transition

composable - is there a way to start the transition based on the user event (e.g., click)? Any hints/suggestions would be appreciated! 🙂

Hey everyone, I'm new to Compose so pardon the potentially stupid question... I've got a Column of Composables that I'd like to filter based on a search bar, but I'm wondering how I can get the search bar's text lifted to its parent composable? I'm running into issues where if I pass a

@Model

object into the Search Bar composable from the parent then it'll get reset every time I type (I'm guessing this is because the parent re-renders causing the Search Bar re-renders)... If anyone's done this and could share how they've done it or point me in the right direction that would be super helpful! Thanks 🙂

Hi, I just updated to dev10 and now I am getting the following during build:

e: java.lang.AbstractMethodError: androidx.compose.plugins.kotlin.ComposeIrGenerationExtension.generate(Lorg/jetbrains/kotlin/ir/declarations/IrFile;Lorg/jetbrains/kotlin/backend/common/BackendContext;Lorg/jetbrains/kotlin/resolve/BindingContext;)V
	at org.jetbrains.kotlin.backend.jvm.JvmBackendFacade.doGenerateFilesInternal$backend_jvm(JvmBackendFacade.kt:86)
	at org.jetbrains.kotlin.backend.jvm.JvmBackendFacade.doGenerateFilesInternal$backend_jvm$default(JvmBackendFacade.kt:64)
	at org.jetbrains.kotlin.backend.jvm.JvmBackendFacade.doGenerateFilesInternal$backend_jvm(JvmBackendFacade.kt:52)
	at org.jetbrains.kotlin.backend.jvm.JvmIrCodegenFactory.generateModule(JvmIrCodegenFactory.kt:36)
	at org.jetbrains.kotlin.codegen.KotlinCodegenFacade.doGenerateFiles(KotlinCodegenFacade.java:47)
	at org.jetbrains.kotlin.codegen.KotlinCodegenFacade.compileCorrectFiles(KotlinCodegenFacade.java:39)
	at org.jetbrains.kotlin.cli.jvm.compiler.KotlinToJVMBytecodeCompiler.generate(KotlinToJVMBytecodeCompiler.kt:638)
	at org.jetbrains.kotlin.cli.jvm.compiler.KotlinToJVMBytecodeCompiler.compileModules$cli(KotlinToJVMBytecodeCompiler.kt:198)
	at org.jetbrains.kotlin.cli.jvm.K2JVMCompiler.doExecute(K2JVMCompiler.kt:172)
	at org.jetbrains.kotlin.cli.jvm.K2JVMCompiler.doExecute(K2JVMCompiler.kt:56)
	at org.jetbrains.kotlin.cli.common.CLICompiler.execImpl(CLICompiler.kt:85)
	at org.jetbrains.kotlin.cli.common.CLICompiler.execImpl(CLICompiler.kt:43)
	at org.jetbrains.kotlin.cli.common.CLITool.exec(CLITool.kt:104)
	at org.jetbrains.kotlin.incremental.IncrementalJvmCompilerRunner.runCompiler(IncrementalJvmCompilerRunner.kt:349)
	at org.jetbrains.kotlin.incremental.IncrementalJvmCompilerRunner.runCompiler(IncrementalJvmCompilerRunner.kt:105)
	at org.jetbrains.kotlin.incremental.IncrementalCompilerRunner.compileIncrementally(IncrementalCompilerRunner.kt:237)
	at org.jetbrains.kotlin.incremental.IncrementalCompilerRunner.access$compileIncrementally(IncrementalCompilerRunner.kt:37)
	at org.jetbrains.kotlin.incremental.IncrementalCompilerRunner$compile$2.invoke(IncrementalCompilerRunner.kt:79)
	at org.jetbrains.kotlin.incremental.IncrementalCompilerRunner.compile(IncrementalCompilerRunner.kt:91)
	at org.jetbrains.kotlin.daemon.CompileServiceImplBase.execIncrementalCompiler(CompileServiceImpl.kt:606)
	at org.jetbrains.kotlin.daemon.CompileServiceImplBase.access$execIncrementalCompiler(CompileServiceImpl.kt:99)
	at org.jetbrains.kotlin.daemon.CompileServiceImpl.compile(CompileServiceImpl.kt:1645)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:357)
	at sun.rmi.transport.Transport$1.run(Transport.java:200)
	at sun.rmi.transport.Transport$1.run(Transport.java:197)
	at java.security.AccessController.doPrivileged(Native Method)
	at sun.rmi.transport.Transport.serviceCall(Transport.java:196)
	at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:573)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:834)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:688)
	at java.security.AccessController.doPrivileged(Native Method)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:687)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)

anything I need to do to get dev10 working? Code is here: https://github.com/kartoffelsup/nuntius-app/commit/754e261591d180031b26cb4030ad27d59726151e - if I downgrade to dev09 it works fine again.

Hi, just a newbie to Compose. Trying to show a list of data with bottom app bar. I have used scaffold as a parent with AdapterList as body content and bottomappbar. The problem is my AdapterList is being overlapped with bottomappbar and I can't seem to find any way around it. I am using dev09 . I know its childish mistake.

Hey, how can I access displayMetrics in compose to get the screen density?

An attempt to create a shimmer effect in compose. currently implemented using canvas and linear gradient. Would love to know if there could be a better/efficient way to do this.

Has anyone been able to use compose with the kotlin-multiplatform plugin instead of the kotlin-android plugin? The composeOptions I set do not seem to be applying and I get a

java.lang.NoSuchMethodError: No static method setContent$default

runtime error. Is there another way to set kotlinCompilerVersion and kotlinCompilerExtensionVersion with the multiplatform plugin?

Is it possible to use camera features with compose. I'm thinking about SurfaceView...

@Composable
fun SomeComposableFunction() {
    val t = animatedFloat(0f)
    Canvas(modifier = Modifier.fillMaxWidth()) {

        // this gives error during compile/build
        onActive {

        }



        //Can't do this as well
        val someValue = remember {

        }



    }
}

is this expected behaviour? we can't access Composables inside lambda's which are in turn inside some composable?

I'm getting:

e: java.lang.IllegalStateException: Backend Internal error: Exception during code generation

whenever I use view binding in a project with compose enabled. Is that a bug? I'm using

dev10

can @Compose annotated functions return values in newer apis now?

What's the reason this works:

val context = ContextAmbient.current
Card(modifier = Modifier.padding(8.dp) + Modifier.fillMaxWidth()) {
        Button(onClick = {
            Log.d(TAG, "Test")
            Toast.makeText(context, "Toast me bro", Toast.LENGTH_SHORT)
                .show()
        }) {
            Text(text = "Test")
        }
    }
}

but this doesn't

Card(modifier = Modifier.padding(8.dp) + Modifier.fillMaxWidth()) {
        Button(onClick = {
            Log.d(TAG, "Test")
            Toast.makeText(ContextAmbient.current, "Toast me bro", Toast.LENGTH_SHORT)
                .show()
        }) {
            Text(text = "Test")
        }
    }
}

I've made thit list with compose. Are these performances normal/expected? Gist: https://gist.github.com/manueldidonna/1eef3017a4ff4e42865641482ea78817

I guess until you implement support for Kotlin 1.4 it won't work, but I have to ask Is there any way to make Compose work with 1.4? 😛 I get this error, related to IR

java.lang.NoSuchMethodError: org.jetbrains.kotlin.ir.expressions.impl.IrBlockBodyImpl.<init>(IILkotlin/jvm/functions/Function1;ILkotlin/jvm/internal/DefaultConstructorMarker;)V

Will this actually compile with the import to the platform Activity extension, or is it a tooling error?

Question about

AdapterList

performance: with

RecyclerView

, when using

DiffUtil

to calculate list changes, it’s recommended to run the diff calculation on a background thread since it can be slow. This makes it tricky to use with declarative programming, because state updates to the list don’t synchronously get propagated down the tree (e.g.

EditText

in an item view causes a new list to be emitted with new text, but that text doesn’t get bound to the actual view until a few main loop iterations later, which causes state to get out of sync when typing fast). What implications does this have for

AdapterList

in Compose? Add/remove item animations can be done at the per-item level, which seems straightforward enough. But if the list is re-ordered, or items are inserted anywhere other than the end of the list, does

AdapterList

preserve composable state/groups by keying on the list items (i.e. using `key`/`Pivotal` machinery)? If it does, does it process those changes more efficiently than

DiffUtil

? Does this question not even make sense in the Compose world?

Is there known issues with the preview in Dev10 in the latest canary android studio? I'm getting this error in every method that has a preview annotation:

java.lang.NoClassDefFoundError: Could not initialize class kotlinx.coroutines.Dispatchers   at androidx.ui.core.WrappedComposition$setContent$1.invoke(Wrapper.kt:267)   at androidx.ui.core.WrappedComposition$setContent$1.invoke(Wrapper.kt:-1)   at androidx.compose.internal.RestartableFunction.invoke(RestartableFunction.kt:131)   at androidx.compose.internal.RestartableFunction.invoke(RestartableFunction.kt:-1)   at androidx.compose.ComposerKt.invokeComposable(Composer.kt:2106)   at androidx.compose.Recomposer.recompose$compose_runtime_release(Recomposer.kt:67)   at androidx.compose.CompositionImpl.setContent(Composition.kt:120)   at androidx.ui.core.WrappedComposition.setContent(Wrapper.kt:266)   at androidx.ui.core.WrappedComposition$setContent$2.invoke(Wrapper.kt:277)   at androidx.ui.core.WrappedComposition$setContent$2.invoke(Wrapper.kt:-1)   at androidx.ui.core.SavedStateDelegate.stopWaitingForStateRestoration(SavedStateDelegate.kt:84)   at androidx.ui.core.AndroidComposeView.onMeasure_Original(AndroidOwner.kt:455)   at androidx.ui.core.AndroidComposeView.onMeasure(AndroidOwner.kt:-1)   at android.view.View.measure_Original(View.java:24552)   at android.view.View_Delegate.measure(View_Delegate.java:80)   at android.view.View.measure(View.java:24516)   at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6828)   at android.widget.FrameLayout.onMeasure(FrameLayout.java:194)   at android.view.View.measure_Original(View.java:24552)   at android.view.View_Delegate.measure(View_Delegate.java:80)   at android.view.View.measure(View.java:24516)   at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6828)   at android.widget.FrameLayout.onMeasure(FrameLayout.java:194)   at android.view.View.measure_Original(View.java:24552)   at android.view.View_Delegate.measure(View_Delegate.java:80)   at android.view.View.measure(View.java:24516)   at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:735)   at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:481)   at android.view.View.measure_Original(View.java:24552)   at android.view.View_Delegate.measure(View_Delegate.java:80)   at android.view.View.measure(View.java:24516)   at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6828)   at android.widget.FrameLayout.onMeasure(FrameLayout.java:194)   at android.view.View.measure_Original(View.java:24552)   at android.view.View_Delegate.measure(View_Delegate.java:80)   at android.view.View.measure(View.java:24516) Copy stack to clipboard   Tip: Try to refresh the layout.

why compose uses sp, dp, instead of raw number just like flutter...🤔

Hey, does anyone happen to know why onTap is called when I tap the red box here? but not the green box?

setContent {
    Stack(Modifier.fillMaxSize()) {
        Box(backgroundColor = Color.Green, modifier = Modifier.tapGestureFilter(onTap = { ... }).preferredSize(200.dp).offset(200.dp, 200.dp))
        Box(backgroundColor = Color.Red, modifier = Modifier.preferredSize(100.dp))
    }
}