kotlinlang #compose

I'm using compose material navigation so that I can navigate to a bottom sheet destination. It works great, except on a single composable screen where I have

BackHandler { myLambda() }

Even though the bottom sheet is showing, my backHandler still get triggered. What's the "right" way to prevent this?

Florian

08/15/2021, 6:44 PM

Should I use

deriveStateOf

to calculate

statisticsFoTask

or is that not the correct approach?

@Composable
private fun TaskWithStatisticsList(
    tasks: List<Task>,
    taskStatistics: List<TaskStatistic>,
    onTaskDetailsClicked: (Task) -> Unit,
    modifier: Modifier = Modifier
) {
    LazyColumn(
        contentPadding = PaddingValues(bottom = 50.dp),
        modifier = modifier
    ) {
        items(tasks) { task ->
            val statisticsForTask = taskStatistics.filter { it.taskId == task.id }
            TaskWithStatisticsItem(
                task = task,
                statistics = statisticsForTask,
                onTaskDetailsClicked = onTaskDetailsClicked
            )
            Divider()
        }
    }
}

Mehmet Peker

08/15/2021, 9:21 PM

Hello everyone.Is anybody has code example of using admob banner?

Can

08/16/2021, 9:15 AM

Is there any idea when https://issuetracker.google.com/issues/149691127 might be in progress?

MaxUt

08/16/2021, 9:21 AM

Is it possible to modify the background color and bar color of the bottom control section? I'm using a Pixel 4a.

carbaj0

08/16/2021, 10:10 AM

com.google.accompanist:accompanist-pager:0.16.1

, question: how can i implement a listener triggered when change of page?

Pedro Joya

08/16/2021, 10:11 AM

Is there a way in compose to give focus to the same textfield that had it after a configuration change?

👍 1

08/16/2021, 10:42 AM

Is there a fastscroll feature for LazyColumn?

MaxUt

08/16/2021, 11:39 AM

I'm trying to create Card shadows using drawWithContent but I cannot figure out how to draw rectangles around my content. Is there a way to do so ? I've tried using offsets but the rectangles get cropped. (I don't want to use the standard shadow modifier as we don't have control over the spread and blur)

ziv kesten

08/16/2021, 12:08 PM

I have a list with expandable items, when I click on the last item I would like the list to scroll up and show the expanded item, how can I achieve that?

➕ 1

Colton Idle

08/16/2021, 3:21 PM

Has anyone created (or found) a material dropdown replacement for compose?

dimsuz

08/16/2021, 4:52 PM

If I have a component which is inside a

Row

of `Button`s and then in some situations I pass it

fillMaxWidth

modifier and I want buttons to expand equally inside it, but if no

fillMaxWidth

modifier is used on that component I want them to behave like "wrap content" would, i.e. be of their inrinsic width. Is this possible to achive easily or should I pass some kind of custom parameter to my component for it to change layout accordingly?

Justin Yue

08/16/2021, 5:24 PM

I have a camera screen whose preview used to work but unfortunately hasn't since the update to stable artic fox for some reason. Code in the thread

brandonmcansh

08/16/2021, 8:28 PM

Hey I was curious if any one had drag-n-drop working for a

VerticalGrid

or a

LazyVerticalGrid

? I see some examples of it working using LazyListState for a Column, but none for a grid

👀 1

Colton Idle

08/16/2021, 8:44 PM

I'm trying to define a ViewModel that accepts a navigation lambda as such

@HiltViewModel
class MyScreenViewModel
@Inject
constructor(var navEvent: (String) -> Unit)

which makes sure that this navEvent is passed in.

fun MyScreen(viewModel: MyScreenViewModel = hiltViewModel(//how do I pass something in))

Is there an easy way to pass in a lambda? I've passed arguments into viewModels with compose before but hiltViewModel did all the heavy lifting and exposed the argument via savedStateHandle. Can I somehow pass this lambda into my savedStateHandle? I'd be okay with that.

zhagnfei

08/17/2021, 2:32 AM

why use much top-level function in compose?

Nathan Castlehow

08/17/2021, 3:16 AM

Hi All, Wondering if anyone has thoughts on the best way to reserve space based on textSize (width wise)? Current use case is I have an area I which could have 0 to N characters in it (in reality itll be just 1,2, or 3 characters). I want the space to always be wide enough for the N characters based on the users current fontscale settings? My understanding is that it really depends on the font as to how much width each character will take?

Napa Ram

08/17/2021, 8:01 AM

HI Everyone can you please suggest me, how can i achieve the background as per below image, like in starting for 1 dp i want to set black color and then Gray color

rajesh

08/17/2021, 9:38 AM

How can we attach ViewModel to specific composable using Hilt? VM should be removed when that composable screen is remvoed.

Chachako

08/17/2021, 9:39 AM

See what I found: Add RenderEffect API, this makes me a little excitement 🙌. I also saw the

desktop

support the same effect by skija, then is it possible to be compatible with the version below android 12
(eg, through RenderScript or Vulkan)?

➕ 1

🎉 1

Anastasia Rozovskaya

08/17/2021, 10:13 AM

Hello! I rewrote logic of MaterialTheme and the app doesn’t use colors from dark theme when it is in dark theme. For example, in code I use it like

modifier = Modifier(background = AppTheme.colors.background)

but in dark theme it shows background color for light theme. Here is a theme implementation

AppColors.kt

https://gist.github.com/llama-0/9b92e8eed30fe65bbdc3b47bf57a1a49

AppTypography.kt

https://gist.github.com/llama-0/99f58df22ae9dbb8adb55dea410136c0

AppTheme.kt

https://gist.github.com/llama-0/4c65f4aa7fdccf8b35ca089f6b30fac1 Any thoughts?

rsktash

08/17/2021, 10:48 AM

[Solved] I'm trying to animate IME insets of bottom sheet via accomponiat lib. But I see strange behavior while animating

Screen_Recording_20210817-154531_Bekachim.mp4

elye

08/17/2021, 11:30 AM

Hi, I wonder if we can have Composable Function in created in another library and use it from the MainApp? When I did that, and as I access the composable function, it crashes. Maybe I miss out some step needed to setup the library? I have reported this issue on StackOverflow too with the design replicating the issue. https://stackoverflow.com/questions/68816470/for-jetpackcompose-can-we-create-our-composable-function-in-another-library

Florian

08/17/2021, 12:01 PM

How can I use lazy loading inside a dropdown menu?

david.bilik

08/17/2021, 12:51 PM

Hey, I’m trying to use

navigation-compose

with viewmodels scoped to

NavBackStackEntry

to pass complex parcelable arguments since it’s not possible natively from list to detail screen. It works fine but when I press button it looks like the detail screen is “requested” again in

composable

call but the previous back stack entry is null. Details in 🧵

👀 1

brandonmcansh

08/17/2021, 1:57 PM

Does anyone know where this falls in the roadmap? https://issuetracker.google.com/issues/193263965

mattinger

08/17/2021, 3:05 PM

I’ve been starting to play with the compose version of NavController. I’ve got a basic drawer menu working, but it makes me wonder if there’s an equivalent of the “<action>” tag when building a NavController via composables. The nice thing about the “<action>” tag is that it makes a clearly defined graph and lays out where you can go from any given destination. I’m not seeing that in the documentation for navigation with compose (https://developer.android.com/jetpack/compose/navigation)

dimsuz

08/17/2021, 4:18 PM

Is there a reported bug for lost keyboard sync? I have a simple

TextField

and if I type few words in it and then press and hold Backspace on hw keyboard, in the end cursor goes out of sync and few symbols remain. Same thing happens in "forward" mode: if I type really fast.

➕ 4

Deepak Gahlot

08/17/2021, 4:54 PM

Hello All, I have been struggling with

java.lang.IllegalArgumentException: SavedStateProvider with the given key is already registered

I'm trying to launch the file explorer for the user to pick a file, and then when the user clicks to return back to the compose screen . I'm getting this error, this was not there before not sure what has changed

Title

Deepak Gahlot

08/17/2021, 4:54 PM

Hello All, I have been struggling with

java.lang.IllegalArgumentException: SavedStateProvider with the given key is already registered

Basically i have a Fragment which hold different jetpack compose navigation screens, and in one of the compose screen i have trying to launch the file explorer using

val registerTakeFile = rememberLauncherForActivityResult(
                ActivityResultContracts.OpenDocument()
            ) { uri ->}

when the user selects the file the exception is thrown. I'm using the same ViewModel across the screen and the fragment.

I guess this is also the same issue https://github.com/google/dagger/issues/2166

Colton Idle

08/18/2021, 1:52 AM

Can you possibly create a minimal sample github repo? I'll clone and take a look if I can help!

Deepak Gahlot

08/18/2021, 4:10 AM

Sure i will do that and share it here

View count: 5