Hi! Is there a way to get pixel color on

Canvas

by coordinates?

Hi ! In this documentation : https://developer.android.com/reference/kotlin/androidx/compose/animation/core/Animatable#init. The snippet use

launch

in order to start a new Coroutine. But, though I've installed the coroutine dependency in

gradle.build

, I still get an error in Android Studio What did I forget to set ?

I wonder since there is a

dialog

for the

NavGraphBuilder

, is there any chance to have

composableDialog

?

Is there any way to show the placeholder text in OutlinedTextField even when the field is not focused? I found a workaround, but it causes flicker when the user focuses the field. I am basically, replacing the value with placeholder when the field is not focused and changing the textcolor to placeholder color.

where can I find animation tutorial/guide?

hi, can I draw outside box bounds? something smiliar to xml’s

clipToPadding=false

?

Jetpack Compose Build Error: java.util.NoSuchElementException: Sequence contains no element matching the predicate. Compose: 1.0.0-alpha11

Is there a way to force

@Preview

to draw wireframes? Most of the time it shows them, but sometimes there are no wireframes or just a part of it.

Is there such thing as a

Row

composable which, when it has too many children, instead of overflowing continues on a “new line” ?

The code in the thread causes the next exception on change of a theme:

java.lang.IllegalArgumentException: Layer is redrawn for LayoutNode in state NeedsRelayout [LayoutNode@5aef729 children: 0 measureBlocks: MeasuringIntrinsicsMeasureBlocks@d83eaae{ measureBlock=androidx.compose.foundation.layout.BoxKt$boxMeasureBlocks$1@340204f }]

There was a similar issue https://github.com/android/compose-samples/issues/129. I don't know if it's the same problem.

I'm implementing a screen that contains a LazyColumn with items that have a checkbox in each of them. I want to have all the checkboxes disabled until the user makes an action (selects an option from separate dropdown menu). The problem is that when I update a checkbox state to enabled=true, the checkbox doesn't update until it is scrolled away from the screen and then back again. I made a simplified version (see thread below) with a single checkbox that is initially disabled and a button that enables it. Pressing the button, however, does not update the checkbox (it is not recomposed?). If I set the checkbox enabled initially and change the button to update the checked state, it works. Is there something special about the enabled parameter that I'm not getting or is there a bug?

I have an E2E (edge to edge) app already, and I'm adding compose to the project. According to Chris Banes' accompanist insets lib I added

Modifier.statusBarsPadding()

to my Toolbar that's in a scaffold, but my statusbar is white instead of Purple (my Toolbar is purple). Am I doing something wrong?

Is there a way to get a callback when a user scrolls a scrollable

Text

? (I'm using

Modifier.horizontalScroll(scrollState)

on the Text, and the text has

maxLines = 1

.) I was looking for it in

ScrollState

but it looks like that's just used to programatically scroll. I'd like to use the scroll as a trigger to generate more characters of text; for example, more decimal places of a given number. (I guess this is kind of a "lazy" or "pagination" like behavior for Text.)

I have a

ViewModel

that is injected by Hilt with the new

@Assisted

annotation. How do I create the

ViewModel

inside a composable?

Is there any Example of using ViewPager2 with Compose?

How’s compose perf for frequently updating UI? I have a screen which displays a feed of data updating every 100ms. In React I would normally separate something which frequently updates into its own small component, do these sorts of optimisations also hold true in compose?

When a Box is clickable and has padding via Modifierer the clickbox will only contain the content. Is this a bug or a feature? Solved

I want to make dashed border like this to my button, for this I am drawing rectangle with dashed stroke, but there is obscure exception: “java.lang.NullPointerException: null cannot be cast to non-null type androidx.compose.ui.graphics.AndroidPathEffect”

Canvas(modifier = Modifier.fillMaxSize(), 
onDraw = {
                            drawRect(
                                size = Size(packFloats(200f, 50f)),
                                color = Color.Blue,
                                style = Stroke(width = 1f, pathEffect = PathEffect.dashPathEffect(floatArrayOf(10f, 10f), 0f))
                            )
}
)

Have you got any idea, why this exception is appearing?

Hi, I am using paging compose 1.0.0-alpha06 and paging-runtime-ktx 3.0.0-alpha10. The problem is I can load the data perfectly for the first time. But when I take action such as delete message from inbox, I want to refresh data but I couldn't manage to do that. If I move the collectAsLazyPagingItems call in messageInboxScreen function it loads as it is in the first time and of course the data is refreshed. In pagination, the data is not observable like in livedata so I stucked how to manage refresh. Any idea for that ? Is there any example related to pagination data refresh?

Could anybody explain how

lineHeight

works? Why doesn't it affect the first line? What is the space below the first line? (Code in thread)

Hello, I am working on a application utilizing

AndroidView

to display a

MapView

in Compose. I am able to get the map to display fine, but there are interactions within my screen that require me to modify the map after a user clicks a button. i.e. displaying a route on the map after doing a network call from the Google Directions API. The trouble I am having is my

AndroidView

Composable

update

block is not firing when my Directions API call is ready. e.g. when my

mutableStateOf(directions)

changes.

Has anyone working with

AndroidView

noticed that the view state of their nested Android view hierarchies isn’t being restored correctly either after config changes or navigation, or weird stuff with lifecycles? I’ve been exploring some of these interactions and found what I’m pretty sure are a number of bugs. The README in this repo describes a number of the (potential) issues I found, but if people have found other repro cases it would probably be good to add them to the Google issue.

What is the alternative for

dragGestureFilter

with

startDragImmediately = true

since it was deprecated?

When I map a request being in flight to button being enabled, and on success move to next screen, what I notice is that given the screen transitions are animated, I can see the button being enabled during the transition for a split second. Has anyone idea as how to workaround this, given the next screen is backable, I cant just map success to button.enabled = false (somehow reset the state after transition)

Any updates on a

1.4.30

compatible release? Reason being: I've hit a

NotImplementedException

while using the IR backend with

1.4.21-2

, hoping praying it's resolved in the next... 😨

androidx.dev is 502 now? 😰

What are the Compose-related implications regarding Kotlin’s JDK IR backend being now beta in 1.4.30? Can this possibly mean we can reasonably expect future updates to Kotlin not to break older versions of compose anymore (starting from alpha12 on)?

I heard HSL color space is easier to reason about, but I see nothing about it in compose packages [1] [2]. There's [3], is it OK to use it? [1] https://developer.android.com/reference/kotlin/androidx/compose/ui/graphics/Color [2] https://developer.android.com/reference/kotlin/androidx/compose/ui/graphics/colorspace/ColorSpace [3] https://developer.android.com/reference/kotlin/androidx/core/graphics/ColorUtils#HSLToColor(kotlin.FloatArray)

I tried CameraX using the AndroidViewBinding. It works fine with

kotlinx-coroutines-android:1.4.1

but for

kotlinx-coroutines-android:1.4.2

the camera preview layout is not centered on the screen.