I seem to get lost with

derivedStateOf

or maybe there is a bug. I have remembered derived state which basically gets parameter of a composable function (AnnotatedText) and produces a value from it, some other local mutable state (hover state) and some composition local (theme holding colors). The problem is that the derived state doesn’t produce change when composition local changes. If I remove

remember

it obviously recomposes, new instance is created and it works fine. But that means that it will recompose and recalculate the value whenever anything changes, which is rather expensive in my case. Do I miss something?

How can I use textClock widget in compose, apart of using androidView

How do you generate a color scheme for Material 3? The Material Theme Builder web tool is linked in Material docs, but it doesn't work (seems abandoned, and GitHub issues saying it doesn't work are unresolved since 2021), so I'm not sure what's the current solution.

https://github.com/android/nowinandroid/blob/main/core-ui/src/main/java/com/google/samples/apps/nowinandroid/core/ui/NewsResourceCard.kt#L228 Is this is preferred solutions for date formatter?

Hi folks, we're happy to share something we've been working on for a while at Bumble – we just recently released the first version of https://github.com/bumble-tech/appyx. It comes with the ability to wrap your composables to components with a lifecycle, and have powerful navigation engines for them with custom states and transitions. Project page and documentation can be found at https://bumble-tech.github.io/appyx/, it demonstrates the above with some nice visual examples. Give it a try and tell us what you think 🙂

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Regarding

collectAsState

is it more appropriate to have 1️⃣

val user = appStateHolder.currentUser.collectAsState().value

or 2️⃣

val user = appStateHolder.currentUser.collectAsState()

Hello! I have a problem and I need some help. While running android tests in a project i randomly get the following error:

No compose hierarchies found in the app. Possible reasons include: (1) the Activity that calls setContent did not launch; (2) setContent was not called; (3) setContent was called before the ComposeTestRule ran. If setContent is called by the Activity, make sure the Activity is launched after the ComposeTestRule runs

With the term randomly, I mean different tests every time. I have defined my rules like that:

@get:Rule(order = 0)
var hiltRule = HiltAndroidRule(this)

@get:Rule(order = 1)
val composeTestRule = createEmptyComposeRule()

@get:Rule(order = 2)
val activityTestRule = createActivityRule<MainActivity>()

Is there something wrong???

Instead of annotating a

List

parameter as

@Stable

, could I also just use an

ImmutableList

from https://github.com/Kotlin/kotlinx.collections.immutable ? Will Jetpack Compose understand?

Is there a reason why

Rect.contains(Offset)

is not marked as

operator

? It would be nice to be able to use the

in

keyword

How would i create a

Card

with these gradient?,

card

background color only responds to

backgroundColor

, using modifer like this:

.background(brush = Brush.linearGradient(
                        colors = listOf(
                            colorResource(id = R.color.lemonade_pink),
                            Color.White.copy(alpha = 0.1f)),
                        start = Offset(0f, Float.POSITIVE_INFINITY),
                        end = Offset(Float.POSITIVE_INFINITY, 0f)
                    )
                )

I have a compose app with edge to edge content that also uses

ModalBottomSheetLayout

. The problem I am facing is that the BottomSheets also draw under the statusbar. It looks weird when the sheet is not fully expanded since the sheet has a lot of padding visible at the top. How can I prevent this?

Does anyone know if there’s a way to intercept the dismiss operation of the scrim was clicked? I don’t want to stop it from dismission, but i do want to log that it occurred. I could use the confirmStateChange as that does get called when the scrim is clicked, and appears to not be called if i programatically close using the .hide() function. But that seems odd to put it in the state.

Scrim(
                color = scrimColor,
                onDismiss = {
                    if (sheetState.confirmStateChange(Hidden)) {
                        scope.launch { sheetState.hide() }
                    }
                },
                visible = sheetState.targetValue != Hidden
            )

As a side question, under what other circumstances would confirmStateChange be called? I see a bunch of stuff in the semantics area, but on testing, i don’t see confirmStateChange called if i manually call hide().

We're trying to enforce that everyone uses our predefined text styles via a lint rule (that warns if you use a Text composable) and by having this MyText defined.

@Composable
fun MyText(text: String, style:MyTextStyle, color: Color) {
  val selectedStyle = when (style) {
    MyTextStyle.H1 -> MyTypography.H1 //maps enum to TextStyle
    MyTextStyle.H2 -> MyTypography.H2
  }
  Text(text = text, color = color, style = selectedStyle)
}

Does this seem like a bad idea to anyone? The map of an enum to a text style feels off, but I think this would get the job done.

Hello, how can I avoid a composable begin drawn outside scope? I'd like to do something like the picture with blue background.

I'm using a BasicTextField with an annotated string to make a rudimentary rich text editor. However, the styles keep getting removed whenever the value is updated via the onValueChange callback. Am I missing something about the functionality of the BasicTextField? Code in thread.

Is it possible to convert a

SpannableString

to an

AnnotatedString

?

I'm trying to figure out the maze of permissions requesting for BLEScanning, but in a Compose app. I'm struggling with how to architect this. When I press my "scan" button, should I make that fire a method on my Activity? or my ViewModel? Is the dance one does to check/request permissions done the same as it always has been? or are their newer composey ways to do that part?

When I need to interact with an Android peripheral (like Camera, or BLE. etc) does that type of code go in one's ViewModel, or stay in the Activity/Fragment (which then feeds the data to the ViewModel)?

Hi every one!! I have a list with items = { ParentClass(val child1: Child1Class, val child2: Child2Class, val child3: Child3Class), … } . All class are Immutable. Can I update _viewstate just recompose one of childClass, ignore to recompose all ParentClass??

is there a way to tint a drawable with a gradient?

Can we use separate preview resources? Let's say a different strings file for example?

Does anyone has references to build this similar UI in Compose?

Good morning all, so I have done some research and don't find any reference to what I'm looking for. I have a company's logo in an image. In trying to set the image as the background for topbar instead of a color. Such as

This is really cool, nice one @Halil Ozercan: https://twitter.com/astamatok/status/1546579778400034817

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Hello there! I have search screen where there is LazyColumn with AnimatedVisibility wrapped items to have addition animation. Here is the thing: the search result can be huge regarding items count and I faced that items continuously played enter animation during scroll. But I only need item to be animated which are visible to user before scroll How can I solve this?

Helli, is there a good Compose supported chart library except MPChart?

hey quick question on

java.lang.IllegalArgumentException: LazyHorizontalGrid's height should be bound by parent.

We started receiving this when we moved to the standard

LazyHorizontalGrid

implementation in 1.2.0 (we're on rc01). This lives within a

LazyVerticalGrid

(full span). Does this mean we need to fix the height of the grid within this container (no way for the content to speak to its size)