Hello, Is it possible to have 2 sticky headers in a row in

LazyList

?

Hello, is there a way to capture Composables and save them as png but with keeping the same pixel depth every time? I have a small image editor and I want to capture the composable in 512x512 everytime. Problem is whenever I use a 480x800 device it goes below 512x512.

Hi, Why it first shows image & text then show shimmer on top of that ?

use

TextFieldValue

instead of

String

which cannot hold composition state

I seem to remember there being a tool that generated a “listing” of Composables defined in a project. I guess this was used as a design system representation or similar. Pretty vague description, as I’m not sure sure of the terminology. Anyone happen to know such a third party plugin/tool?

Hello, I am looking permission sample. I found two sample projects. I am little bit confused which one is correct and updated one to use. I have one inside permissions and another one is inside the samples. Anyone please help me which one we need to use and latest one. Thanks

Hello, it is possible to specify weight for an item in a column, but with minimum height? So item expands to fill empty space, but does not shrink below minimum height? Something like

LottieAnimation(
    modifier = Modifier
        .fillMaxWidth()
        .weight(1f)
        .heightIn(min = 200.dp),
    composition = composition,
    progress = { progress },
    contentScale = ContentScale.Crop
)

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I'm somehow apt at producing compiler errors O.o https://gist.github.com/reactormonk/dd5904bdbeec45541bacbee4366ce05c

Ah, forgot the build feature 😄

Jetpack Compose isn’t updating my user state since I implemented nested navigation. After the user logs out I set my UserStateModel to null.

private val _userStateFlow: MutableStateFlow<UserStateModel?> = MutableStateFlow(UserStateModel())
val userStateFlow: StateFlow<UserStateModel?> = _userStateFlow

in my MainViewModel I’m collecting this state and i’m passing the user state down the hierarchy. Before implementing nested navigation everything got updated accordingly but since I implemented nested navigation the change get’s lost somewhere inside my navigationGraph. Anyone else faced this problem?

Hi, I have a LazyVerticalGrid of images, and I want to know the size of the cells so I know what size images to fetch. How can I get the size of an individual cell? Because the size is dynamically determined by the number of columns, spacing, and contentPadding, I don't know the size ahead of time.

Is there any advantage in using remember for simply instatiating a class?

val model = remember {
    Model(
        name = "John",
        lastName = "Doe",
        nationality = "Colombian",
        type = Type.DEVELOPER
    )
}

probably thinking about it too much but I'm not sure if re-instantiating the class on every recomposition has a significant cost

Hi all, I'm having trouble drawing edge-to-edge when the status bar is hidden (works fine when status bar showing) - I can only draw beneath the blank area where the status bar would be when it's hidden. I'm using compose 1.3.0-beta02 and accompanist-systemuicontroller:0.26.3-beta:

WindowCompat.setDecorFitsSystemWindows(window, false)
setContent {
  val systemUiController: SystemUiController = rememberSystemUiController()
  systemUiController.isStatusBarVisible = false
  // draw here

The layout inspector shows a ViewStub of height 42dp:

DecorView
  LinearLayout
    action_mode_bar_stub - ViewStub   height 42dp
    content - FrameLayout
      ComposeView
    navigationBarBackground - View
    statusBarBackground - View

Any ideas ? UPDATE: I've found it draws correctly on an Android 12 & 13 emulators but not on Android 12 on a Samsung S10.

Not sure if portersuff would work, it might

Any good book / material for camera applications in Android?

What is the best way to pass an object between 2 compose screens? 1. Save the object to room db and get it in the viewmodel with savestatehandle. 2. Share a single viewmodel between 2 screens pass the object in the viewmodel. 3. Convert the object to JSON and parse it on the next screen via custom NavType Well?

how to open open bottom sheet on top of another bottom sheet ? existing implementation removes the below bottom sheet from stack

how do I scale a path in jetpack compose? The matrix transformations from the old android drawing api seems no longer to exist (path.transform)

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Why is there such limited supported for PlatformHapticFeedback while the constants exposed through android are many? Is it because android treats

LongPress

as just a click?

I'm trying to inject a simple Text Banner into an existing Fragment/layout. It embeds fine (per https://developer.android.com/jetpack/compose/interop/interop-apis#compose-in-fragments). But I need to hoist some state (I think) into the fragment. I have a value at the Fragment level in a LiveData. But it's unclear to me how to change my ComposeFunction to become aware of that value and recompose when it changes. I'm successfully able to pass the LiveData as an arg to the @Composable function and compose the original view. But updates to the LiveData don't cause it to recompose. I looked for

observeAsState

per the docs, but it doesn't seem to find that. Nor is it clear where to invoke that at...

I just figured that

Surface

clips by default by the

Shape

passed into it. Plus there doesn’t seem to be any Surface which provides flexibility there. Is there some specific reason why that is the case? My use case is that I am rotating something inside a Surface (to get proper contentColor) and I am rotating that item in there meaning that while it’s at for example 45° the corners get clipped. I guess I can make my own surface overload, but curious to see if I am missing some API and if not what the reason is for

Surface

to always clip.

Is there a way to get Compose Texts to autodetect clickable links in their text? Looking for something like iOS TextView url data detectors basically

I've been going in circles about this for a while, thought I should just ask, see if anyone has some ideas. So I want to add a interactive scrollbar to

BasicTextField

, I can add a

verticalScroll

modifier, but that breaks the built in scrolling. What I really want is to maintain it's built in scrolling, but be able to access that for the scroll bar. Looking in

CoreTextField

the

TextFieldScrollerPosition

isn't passed in as an argument, so it doesn't look to me like there is anyway I could access it, and I think all of the related functions and classes are marked internal. Anyone have any good ideas?

Got a class like

@Immutable
@JvmInline
value class Foo(val values: Set<Int>)

And when generating compose metrics this gets read as

unstable

. When removing the

@JvmInline

and the

value

from it, and keeping the

@Immutable

(or

@Stable

) it does in fact get inferred as stable looking at the generated files. This must be a bug right?

Hi everyone. I’m not sure if it’s asked before but I couldn’t find the exact answers I’m looking for. unstable does not necessarily mean it is not skippable, right? I read these articles https://medium.com/androiddevelopers/jetpack-compose-stability-explained-79c10db270c8 https://chris.banes.dev/composable-metrics/ and they say:

“A composable function is ‘skippable’ if Compose determines that it can completely skip calling a function”

“if Compose can’t be sure, it will always be recomposed when its parent composable is recomposed.”

From those, I understand as compose will do recomposition if a parameter is defined as unstable but what I experienced was a bit different. I run compose metrics and have this output for a composable:

restartable skippable scheme("[androidx.compose.ui.UiComposable]") fun DummyScreen(
  stable id: String
  stable onClick: Function1<Boolean, Unit>
  stable modifier: Modifier? = @static Companion
  unstable style: DummyStyle? = @dynamic Companion.Default
  unstable viewModel: DummyViewModel? = @dynamic hiltViewModel(null, $composer, 0, 0b0001)
)

Even though parameters are unstable, composable itself is marked as skippable. Is this expected?

Use a gradient

Brush,horizontalGradient(
  0.0f to cyan,
  0.5f to cyan,
  0.5f to lightBrown,
  1.0f to lightBrown,
  ...
)

Hello, I have a little question regarding focus management. As requested (sorry for that), everything is in the following thread 🧵