kotlinlang #compose

How to display multiple dialog boxes in sequence with the most elegant code? dialog1 -> dialog2 -> dialog3 (The messy code in the thread 😅 and maybe this is the flaw of declarative...

Smorg

04/30/2021, 7:29 AM

Hi, anyone knows if the RC releases of AS works with compose?

MaxUt

04/30/2021, 9:34 AM

Hi there, I'm trying to maintain the navigation and scrollstate of a WebView but haven't manage to make it work so far. I decided to hoist the webView and webViewClient to the parent composable but when switching tab, the webview doesn't seem to come back to its previous state. Any idea what would cause such problem ?

Paul Woitaschek

04/30/2021, 11:06 AM

I'm running into issues between ComposeView interop:

ViewTreeLifecycleOwner not set for this ComposeView

This is because the transition manager detaches the view for transitions:

at android.view.ViewGroupOverlay.add(ViewGroupOverlay.java:72)
        at androidx.transition.ViewGroupOverlayApi18.add(ViewGroupOverlayApi18.java:48)
        at androidx.transition.Visibility.onDisappear(Visibility.java:431)
        at androidx.transition.Visibility.createAnimator(Visibility.java:257)
        at androidx.transition.Transition.createAnimators(Transition.java:744)
        at androidx.transition.Transition.playTransition(Transition.java:1808)
        at androidx.transition.TransitionManager$MultiListener.onPreDraw(TransitionManager.java:300)

Is this a known thing?

Daniele B

04/30/2021, 12:33 PM

If we are using JetpackCompose Navigation, is there a suggested path to support dual-pane for tablets? In other words, if we define a master screen and a detail screen as separate

NavHost

composables, is there a way to tell Navigation to show them next to each other on a bigger screen in landscape?

Semyon Zadorozhnyi

04/30/2021, 2:26 PM

Hi! I’m practicing Compose for desktop and I’m stuck with the problem: I have “screenState: StateFlow” value with state for my UI (sealed class) From UI I use default approach “screenState.collectAsFlow()” to trigger recomposition if state changes and I have method “subscribe(chatRoom: ChatRoom)” in my ApplicationController (aka view model for desktop) which calls to a useCase and returns Flow<Message>. Emitter takes my state and makes a copy with a new message but from time to time Compose ignores (or misses) new state value. Screenshots in thread.

robnik

04/30/2021, 4:43 PM

What's the latest way to hook into the "back" button? I see some older posts but they seem outdated. I'm experimenting with writing a custom nav controller, since the official NavController does not do what I want. It seems relatively easy thanks to Compose, but the back button is a question mark... maybe more difficultly is hiding there.

Vince Rickey

04/30/2021, 5:18 PM

Layout Intrinsics example from Layouts in Compose documentation and CodeLab doesn't seem to be working. Screenshots and code in the thread.

🙂 1

Michal Klimczak

04/30/2021, 6:09 PM

I think there might be a bug in the error message for compose compiler or I don't understand something. I get:

This version (1.0.0-alpha13) of the Compose Compiler requires Kotlin version 1.4.31 but you appear to be using Kotlin version 1.4.32 which is not known to be compatible. Please fix your configuration (or
suppressKotlinVersionCompatibilityCheck
but don't say I didn't warn you!).

But the version I'm using is

1.0.0-beta03

. Also, when I had

1.0.0-beta01

it complained

This version (1.0.0-alpha13) of the Compose Compiler requires Kotlin version 1.4.30 but you appear to be using Kotlin version 1.4.32 which is not known to be compatible. Please fix your configuration (or
suppressKotlinVersionCompatibilityCheck
but don't say I didn't warn you!).

So it's still saying

(1.0.0-alpha13)

even though reports that it requires a different kotlin version. Where do I even report that?

Cicero

04/30/2021, 7:01 PM

I have a question. I’ve been punishing myself here trying to achieve what’s in the linked image, I kind of got it with drawing an arc bit I can get the arch to be aligned or anchored to the bottom of the image. Please, if you know how to improve my snippet or do this in a simpler way, code snippet of what I currently have is in the thread…

Ravi

04/30/2021, 8:18 PM

Hi, our app min sdk is 16 & we are planning to migrate to api 21 for compose but don't want to loose <21 user base. They should be able download at least older version (of course no updates) instead of seeing

This app is not compatible with your device

in playstore. I've seen multiple-apk approach but it might increase our release cycle complexity. Is there a way to retain older

aab

to cater <21 api level? Also if we want to provide

liteversion

to <21 is it possible ? Any help/suggestions would be appreciated.

:stackoverflow: 1

Nat Strangerweather

04/30/2021, 8:38 PM

Collision Detection Question: I am dragging some boxes around my screen and I want to create an animation when one box touches another. Is this possible or would I be better off transferring everything to a Canvas? If it is possible, could someone please point me in the right direction. I can deal with the doc; I just don't know where to start to detect collision between boxes in Compose. Thanks!

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John O'Reilly

05/01/2021, 11:47 AM

Has anyone used any particular approach for adding coach marks when using Compose?

rsktash

05/01/2021, 1:01 PM

Is there a plan to support native ads in jetpack compose?

Slackbot

05/01/2021, 1:29 PM

This message was deleted.

Colton Idle

05/01/2021, 2:28 PM

Possibly dumb question, but Icon has a tint param, while Image does not. If my image just displays a black vector and I want to set it to white, is this enough or am I breaking some kind of rule I don't know about? I might write my own VectorImage composable that just takes a tint like Icon. 😅

colorFilter = ColorFilter.tint(MyTheme.colors.onSurfaceWhiteColor)

Rudolf Tammekivi

05/01/2021, 2:32 PM

Is there a way to color an SVG with different colors in Compose? Previously I used ContextThemeWrapper with a custom theme and in the SVG I set the fillColor to my custom attribute ( for example:

android:fillColor="?attr/ferryOutside"

) . This allowed me to reuse the same SVG for different colored images. I am wondering if there is a way to do this in Compose and maybe there is a better way? I need to use multiple colors in the SVG, it seems like LocalContentColor is not suitable for this use.

dewildte

05/01/2021, 5:58 PM

Anybody know how to fix this:

e: This version (1.0.0-alpha13) of the Compose Compiler requires Kotlin version 1.4.30 but you appear to be using Kotlin version 1.4.31 which is not known to be compatible.  Please fix your configuration (or `suppressKotlinVersionCompatibilityCheck` but don't say I didn't warn you!).

All my dependencies are

1.0.0-beta05

so this error seems impossible. EDIT: Fixed

Lilly

05/01/2021, 7:08 PM

Having this sample, when checking the first item and scrolling the list, the item is unchecked again, so the state is reset on scrolling, but why? I'm blind

@Preview(device = Devices.PIXEL)
@Composable
private fun TestPreview() {
    LazyColumn {
        repeat(20) {
            item {
                val checkedState = remember { mutableStateOf(true) }
                Checkbox(
                    checked = checkedState.value,
                    onCheckedChange = { checkedState.value = it }
                )
                Spacer(modifier = Modifier.height(24.dp))
                Divider()
            }
        }
    }
}

Adrian Landborn

05/02/2021, 9:15 AM

We have stated to build a Design System Library which will be consumed by multiple apps. Are there any good articles, tutorials or such to get inspiration from? I am opting for Compose but the POs (and teams to consume this lib) thinks its too early to to use Compose. Anyone built a proper DSL with Compose yet?

Shakil Karim

05/02/2021, 12:14 PM

Finally, Prefetch API's are added to the LazyColumn/Row, Hopefully, it increases performance. https://android-review.googlesource.com/c/platform/frameworks/support/+/1673249

👍 6

ste

05/02/2021, 1:21 PM

Hi guys, is combining

width(IntrinsicSize.Max)

and

animateContentSize

intended to throw an exception (

Can't represent a size of 2147483647 in Constraints

)? Code in thread

Nat Strangerweather

05/02/2021, 2:46 PM

I'm using

Modifier
    .onGloballyPositioned {
        position.value = it.positionInParent()
    }

which is incredibly useful but I would need the value as DpOffset rather than Offset. Is that conversion at all possible?

Justin Tullgren

05/03/2021, 12:47 AM

Whats the recommended way to have screens without scaffold views when they are being loaded in a

NavHost

composable which is the

content

of a scaffold? Ex. The main screens should all have consistent bottomnav and topappbar but some screens need to go without and these screens are accessed from the main screen. Is this a nav subgraph situation, push the scaffold down into the screens, or something else I am missing? Thanks !

Shivam Sethi

05/03/2021, 4:27 AM

Please help, I am not able to instantiate viewModel which has dependencies injected to it through hilt. The app. crashes when I start that activity

Shivam Sethi

05/03/2021, 6:47 AM

this activity was running fine 2 days ago, now it is crashing. I did not change anything in this file.😩

Shakil Karim

05/03/2021, 9:05 AM

Is there any examples for loading new data when reaching last item on Lazycolumn?

Mjahangiry75

05/03/2021, 10:58 AM

Is it possible to create Squircle shape in jetpack compose?

Nat Strangerweather

05/03/2021, 2:11 PM

This is quite basic but in the case of a custom layout, if I wanted to pass a measured value to another composable, is the best solution to use a View Model or is there a more straightforward way? Please see my code. I need to pass the

boardWidth

value elsewhere.

clhols

05/03/2021, 2:40 PM

I have an issue where a ComposeView just freezes (animations stop and no input is registered) when navigating to its fragment. The profiler shows that the UI thread is just sleeping and doing nothing. It also shows the touches/clicks but the composables inside the ComposeView doesn't receive the clicks and animations do not run. The app (main thread) is not frozen as I can use a bottom nav view to switch to another fragment and back. If I do that then everything works as expected. It is triggered by a deep link which navigates to the startDestination of the nav graph just with a new Bundle containing the data from the deep link. Maybe there is a conflict between the nav component navigating to the startDestination and the deep link triggering another navigate() immediately afterwards. Any pointer on how to debug this?

👀 1

Title

clhols

05/03/2021, 2:40 PM

👀 1

The same thing happens if you use "Apply Changes and Restart Activity" in Android Studio.

Michal

11/29/2021, 12:22 PM

@clhols have you find a way around this or how to get some logs? I see the issue in current beta03. I will see if it happens due to some dependencies...

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