kotlinlang #compose-desktop

{
severity: "error",
code: null,
path: "My_App-1.0.0.dmg/My <http://App.app/Contents/app/sqlite-jdbc-3.34.1-371b212b7663f42133e45d49e82ad30.jar/org/sqlite/native/Mac/x86_64/libsqlitejdbc.jnilib|App.app/Contents/app/sqlite-jdbc-3.34.1-371b212b7663f42133e45d49e82ad30.jar/org/sqlite/native/Mac/x86_64/libsqlitejdbc.jnilib>",
message: "The binary is not signed.",
docUrl: null,
architecture: "x86_64"
},
{
severity: "error",
code: null,
path: "My_App-1.0.0.dmg/My <http://App.app/Contents/app/sqlite-jdbc-3.34.1-371b212b7663f42133e45d49e82ad30.jar/org/sqlite/native/Mac/x86_64/libsqlitejdbc.jnilib|App.app/Contents/app/sqlite-jdbc-3.34.1-371b212b7663f42133e45d49e82ad30.jar/org/sqlite/native/Mac/x86_64/libsqlitejdbc.jnilib>",
message: "The signature does not include a secure timestamp.",
docUrl: null,
architecture: "x86_64"
}

rsktash

07/31/2021, 8:44 AM

Hi I’m having an issue with expect/actual composable function when built from scratch app works without exception but when make any change to my app and rerun sometimes throwing error

java.lang.NoSuchMethodError: No static method Blablabla

Sivan

07/31/2021, 5:10 PM

Upgrading to

v1.0.0-alpha1-rc1

throws the following error :

Could not find androidx.annotation:annotation:1.2.0.

Required by:
            project : > org.jetbrains.compose.ui:ui-tooling:1.0.0-alpha1-rc1 > org.jetbrains.compose.ui:ui-tooling-desktop:1.0.0-alpha1-rc1 > org.jetbrains.compose.ui:ui-tooling-preview:1.0.0-alpha1-rc1 > org.jetbrains.compose.ui:ui-tooling-preview-desktop:1.0.0-alpha1-rc1

Am I missing something?

Alexander Suraphel

07/31/2021, 5:36 PM

i cloned

JetBrains/compose-jb

and did

desktop:package

. The size of resulting .app file is 104.5MB. I’m on macOS 11.5.1. Why is the application large for such a simple example project?

atsushieno

08/01/2021, 6:22 AM

What would make it possible to debug Compose for Desktop apps on IDEA?

rsktash

08/01/2021, 10:24 AM

I’m fed up with this issue When I make any change to Coomposable function bodies which call this Composable and run to android my device AS doing something wrong and at runtime throwing this error

Victor Yakovlev

08/01/2021, 1:03 PM

after migration to 1.0.0-alpha1-rc1 a strange bug appeared First screenshot - 0.5.0-build270 Second screenshot - 1.0.0-alpha1-rc1

Alexander Suraphel

08/01/2021, 6:29 PM

We are choosing between Electron and Compose Desktop. What thing I feel will be missing is powerful charting libs. Web has powerful libraries like D3 and other derived from it. Are are great options for compose in that area?

Steve

08/01/2021, 7:06 PM

Is there a layout that my three elements use the full width but the left and right have the width with content wraped and the mid will fill the space left in the middle?

spierce7

08/02/2021, 4:50 AM

@Nik I tried the approach you suggested of copying resources out of the jar into a folder so that they can be accessed outside of the jar. This works when the app is in the build folder, but when it’s in the

/Applications

folder, it has an issue when trying to copy to the

My <http://App.app/Contents/resources|App.app/Contents/resources>

dir.

java.nio.file.FileSystemException: /resources: Read-only file system

Does anyone have a recommendation of where I should be saving these resource files?

atsushieno

08/02/2021, 9:31 AM

e: /home/atsushi/.gradle/caches/jars-8/e51b24e2bc2b3d6212beb0e53efc315d/compose-gradle-plugin-1.0.0-alpha1-rc1.jar!/org/jetbrains/compose/desktop/DesktopExtension.class: Class 'org/jetbrains/compose/desktop/DesktopExtension' was compiled with an incompatible version of Kotlin. The binary version of its bytecode is unknown, expected version is 1.0.3

Which kotlin version makes it work with compose-gradle-plugin:1.0.0-alpha1-rc1 ? I got this error with kotlin-gradle-plugin:1.5.30-M1 which I assume is the latest.

✅ 1

Guldana Kystaubayeva

08/02/2021, 12:17 PM

There is some bug with VerticalScrollbar in AlertDialog. Buttons overlap it at the bottom. And Text at the top is also moving, when it shouldn't.

18-07-46_Trim.mp4

Michal Harakal

08/02/2021, 1:51 PM

I would like to take a screenshot in desktop app as a part of jvmTest. In androidTest I can do that with takeScreenshot method from uiautomator.UiDevice. Any hint how I can do that without spinning up an Android emulator (I have both targets …)?

rsktash

08/02/2021, 8:46 PM

hi when there will be binary compatibility with jetpack compose? There are some libraries like coil, lottie which we can use in android module

Steve

08/02/2021, 10:48 PM

I would like to have a scrollable element for horizontal scoll. I tried the following two code as example and both didn't work. Is there another way to get the scrollable element?

fun main() = Window {
    val stateVertical = rememberScrollState(0F)
    Row(modifier = Modifier.width(400.dp)
        .horizontalScroll(stateVertical)) {
        listOf(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17).forEach{
            val text = "Hello, Desktop! $it"
            Button(onClick = {
            }) {
                Text(text)
            }
        }
    }
}

fun main() = Window {
    ScrollableRow (modifier = Modifier.width(400.dp)){
        listOf(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17).forEach{
            val text = "Hello, Desktop! $it"
            Button(onClick = {
            }) {
                Text(text)
            }
        }
    }
}

rsktash

08/03/2021, 4:00 AM

Hi how can we call fast*** util. functions in common module?

Sam Michael

08/03/2021, 8:28 AM

Trying to make a go game board. Wonder if anyone here attempted this in compose? I seem to be stuck with the idea of manually drawing the board lines (using canvas API) and then overlaying circular buttons on top. It seems like chess would be easier because each button could represent a board square, whereas in go we play stones on the corner. Anyway, anyone interested or have any suggestions?

Joey Heck

08/03/2021, 8:42 PM

calling a java FileDialog works great, unless I'm in a TextField.

val fileDialog = FileDialog(window.window)
fileDialog.isVisible = true

triggers

Exception in thread "AWT-EventQueue-0" kotlinx.coroutines.CoroutinesInternalError: Fatal exception in coroutines machinery for CancellableContinuation(DispatchedContinuation[FlushCoroutineDispatcher@8e8a808, Continuation at androidx.compose.foundation.gestures.TapGestureDetectorKt.awaitChannelUpOrCancel(TapGestureDetector.kt:275)@45a19ee9]){Completed}@50fcdf16. Please read KDoc to 'handleFatalException' method and report this incident to maintainers

SrSouza

08/03/2021, 10:40 PM

Hi folks, Compose-desktop has any version that is compiled on top of Compose Android 1.0.0 ? (specially the compiler plugin)

Alexey Glushkov

08/04/2021, 11:56 AM

Hi everybody. I’ve managed to run compose-jb todo example but I see that it uses

buildSrc

instead of gradle

includeBuild

. In my pet project I use

includeBuild

and I didn’t manage to setup compose-jb with it. I’ve reproduced the error I get in my pet project with the todo example. There’re my changes: https://github.com/soniccat/compose-jb/commit/cf2dc97e8a42bc1fbd3aa678799537bd5f447921 The full error message is here https://pastebin.com/ghZLKS21 Probably I’ve messed up with gradle… would be great to hear any ideas.

Alexander Kurasov[JB]

08/04/2021, 2:01 PM

We are happy to announce that Compose Multiplatform went Alpha today. The build

1.0.0-alpha2

is already available in the Maven repo. While its API is not completely stabilized, we will strive to minimize API changes in future, focusing on stabilizing the framework on its way to beta and 1.0. We believe that though the current version may have certain issues, it already could be used for early prototyping and PoC preparations of real applications built on Compose Multiplatform technology. And as usual - feel free to share feedback about Compose Multiplatform, so that we could improve it. Enjoy composing! P.S. Some details about the Release could be found here - https://blog.jetbrains.com/kotlin/2021/08/compose-multiplatform-goes-alpha/

:party-parrot: 10

🎉 38

:kotlin-intensifies: 6

Alexander Suraphel

08/04/2021, 5:45 PM

Has anyone managed to render a Preview ? I just tried it with:

✅ 1

Tristan B.

08/04/2021, 6:17 PM

I have updated compose desktop from 1.0.0-alpha1-rc4 to 1.0.0-alpha1 and I can't build an executable anymore. When I execute "runDistributable", I have the following error : "Error: Could not find or load main class esources"

➕ 1

Dario Valdespino

08/04/2021, 7:19 PM

The latest JetBrains Toolbox release is now fully made in Compose Desktop (which is awesome). Now, I noticed that the popup window when you click on the tray icon looks very nice and native. How did they manage that? I've tried a lot of things (like undecorated windows with transparent backgrounds), but have achieved nothing. Any thoughts on this?

Dominaezzz

08/04/2021, 8:56 PM

Which version of Kotlin can I use for the alpha version?

1.5.10

1.5.20

and

1.5.21

don't seem to work.

✅ 1

Sam Michael

08/04/2021, 9:56 PM

Have a question still about drawBehind, how can I get the same result but draw on top of some content? It seems like when I use Canvas by itself it puts it after the text, but I don't want it to be behind either. I just want directly over the cross but on top

Box {
    Text(
        modifier = if (isVisible.value) Modifier.drawBehind {
            drawCircle(Color.Black, radius = 10f)
        } else Modifier,
        text = text.value,
        color = Color.Gray,
        fontSize = 30.sp
    )
}
androidx.compose.foundation.Canvas(modifier = Modifier.fillMaxSize(), onDraw = {drawCircle(color = Color.Black, radius = 10f)})

rsktash

08/05/2021, 2:10 PM

I’m having this error after upgrading to the last version

Joey Heck

08/05/2021, 3:48 PM

This morning, on a fresh project with 1.0.0-alpha1, I'm getting:

Could not find androidx.annotation:annotation:1.2.0

Sam Michael

08/05/2021, 8:34 PM

Still having trouble with getting Compose Preview annotation to resolve. Added the uiTooling implementation and compose-gradle-plugin:1.0.0-alpha1-rc1, all the stuff I found in the threads above.

✅ 1

spierce7

08/05/2021, 10:35 PM

I’m trying to make my Compose application self-updating. I’ve never messed with `ClassLoader`s before, but thought it might be possible to do with them.

val jarFile = File("<Path to downloaded jar>")
val classLoader = URLClassLoader(
    arrayOf(jarFile.toURI().toURL()),
    Thread.currentThread().contextClassLoader
)

val myMainClass = Class.forName("MyClass", true, classLoader)
val mainMethod = myMainClass.getDeclaredMethod("main")
mainMethod.invoke(null)

This works until the AWT loop starts and my class loader hasn’t been set on that thread so it can’t find the right class. I’m sure there is a better way to do this. Can anyone point me in the right direction?

Title

spierce7

08/05/2021, 10:35 PM

I’m trying to make my Compose application self-updating. I’ve never messed with `ClassLoader`s before, but thought it might be possible to do with them.

val jarFile = File("<Path to downloaded jar>")
val classLoader = URLClassLoader(
    arrayOf(jarFile.toURI().toURL()),
    Thread.currentThread().contextClassLoader
)

val myMainClass = Class.forName("MyClass", true, classLoader)
val mainMethod = myMainClass.getDeclaredMethod("main")
mainMethod.invoke(null)

Thread.currentThread().contextClassLoader = classLoader
Thread.getAllStackTraces().forEach { (t, _) ->
    if (t.contextClassLoader != null) {
        t.contextClassLoader = classLoader
    }
}

Seems to work, but I imagine new threads that spawn won’t have the class loader. There has to be a better way to do this.

jim

08/06/2021, 5:22 AM

ClassLoaders are tricky. Setting the

contextClassLoader

feels very sketchy to me; you shouldn't need to set the

contextClassLoader

. I'm not sure I understood the issue with the AWT loop. AWT is always going to get loaded using the parent classloader because it is part of the

java.

namespace which is special cased (for security reasons?). But this shouldn't matter, as long as all your classes are loaded using your custom ClassLoader. Any class referenced by

MyClass

and which is only provided by

jarFile

should be loaded by your classloader. If you can elaborate on specifically what problem you were facing with your old approach, perhaps we can help. Although it is worth noting that we are venturing into purely java territory, and there is nothing compose-specific about these questions, so you might get more visibility in a place like StackOverflow.

Casey Brooks

08/09/2021, 12:21 AM

There’s a library specifically for this, update4j. I haven’t used it myself but it seems pretty solid, and will probably give you a much better result than trying to do it all yourself. As Jim said, classloaders are tricky and there’s a thousand ways you could get it wrong which would lead to subtle “heisenbugs”, so it’s better to leave it up to the folks who actually understand this stuff 😅 https://github.com/update4j/update4j

spierce7

08/09/2021, 3:21 AM

@jim Just saw your responses. Thanks for taking the time.

Setting the
contextClassLoader
feels very sketchy to me; you shouldn’t need to set the
contextClassLoader

This all feels super sketchy to me lol

Any class referenced by
MyClass
and which is only provided by
jarFile
should be loaded by your classloader.

I actually didn’t see that happening. Based on what I was seeing, I made the assumption that the classloader on the thread that’s running the code is what is used to load the new class.

Thread.currentThread().contextClassLoader = classLoader
Thread.getAllStackTraces().forEach { (t, _) ->
    if (t.contextClassLoader != null) {
        t.contextClassLoader = classLoader
    }
}

Actually did get my jar running. I read a blog post about how resolving all memory leaks with an approach like this is almost completely impossible though. I think taking this approach for an auto-updating app seems bad.

@Casey Brooks Thanks - I’ll give update4j a shot

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