Does anyone know of any samples using navigation-compose specifically the passing and receiving of arguments? The current samples don't use arguments.

Box and Stack are same? , I dont get the difference between them

Frequently seeing the following build error on

AS 4.2 Canary 15

&

1.0.0-alpha04

:

e: java.lang.IllegalArgumentException: Unbound type parameters are forbidden: [Unbound private symbol org.jetbrains.kotlin.ir.symbols.impl.IrTypeParameterSymbolImpl@4decb5a, Unbound private symbol org.jetbrains.kotlin.ir.symbols.impl.IrTypeParameterSymbolImpl@45aa5e3d]

Haven't had success with isolating it to anything in particular. Anyone know what might be causing this?

mutableStateOf

is something that was introduced as part of compose right?

Hey folks, I'm using mockito to mock a viewmodel and then return certain values, my view model contains this where imageItems is

var imageItems: List<ImageItem> by mutableStateOf(listOf())
	private set

and then my mock looks like this

@Mock
lateinit var viewModel: ImageListViewModel
...

`when`(viewModel.imageItems).thenReturn(listOf())

but doing this gives me an error:

java.lang.NullPointerException: Attempt to invoke interface method 'java.lang.Object androidx.compose.runtime.State.getValue()' on a null object reference

would anyone know what I'm doing wrong?

hi everybody! I don’t know if this has already been asked around here, but here’s my question: I have a composable which is the one inside my main content, that has a scaffold with a top bar, a content and a bottom navigation bar. I’m creating more composables in the content part, and in this case I have a

LazyColumnFor

, and I’m also using the navigation for compose. My question is that when I click on an item from the composable that has the

LazyColumnFor

I’m navigating to the detail composable of that item (let’s call it

ItemDetail

) and here, I see that the content is between the top bar and the bottom nav bar of the scaffold of the parent component. Is it possible to have a reference to the top bar and the bottom nav bar? For example I want to add the back arrow to the top bar for the up navigation. Thanks in advance!

Anyone using gson or moshi (reflection based) with Compose? Simply enabling compose (I'm not even using an compose code) in a project with reflection causes kotlin reflect to crash at runtime. https://youtrack.jetbrains.com/issue/KT-42322 Just curious if someone has figured out some kind of workaround yet.

Hi @Ian Lake, Is there a way to set a Destination's arguments to take it from a

stringResource(...)

? Since

navArgument(...)

isn't a

@Composable

function, its not possible to do:

composable(
    route = Screen.route + ...,
    arguments = listOf(
        navArgument("NAME") {
            defaultValue = stringResource(id = R.string.placeholder)
        },
    ),
) {
    ...
}

Do we have support for compose to be diagonally draggable? https://stackoverflow.com/questions/64379464/how-to-create-a-drag-gesture-in-any-direction-in-android-jetpack-compose

I have Idea 2020.2.3 Community Edition, but unable to see compose in new project wizard for compose desktop

Anyone else having an issue with the

OutlinedTextField

not displaying the keyboard on focus?

Is it possible to rotate an

Image

?

Hey guys, I wasn't active in compose for a while. What are the current best practise samples/howTo's/playgrounds I should be aware of? Thanks in advance!

Hi, there's a

Divider

composable for horizontal dividers. Will there be a counterpart for vertical?

if you set the

prefredHeight

won't it work?

Can we replace

ValueAnimator

with some function from compose, or we still have to use it? In my case I need to show

CircularProgressIndicator

animation from 0% to 100% with 500ms duration triggered by button click

Hey guys, is it possible to use Text to display a clickable link inside a text string ? I can't find a way using AnnotatedString... ?

Is there a way to make a circular checkbox?

Hi all. Looking to do a fadeIn -> wait -> fadeOut animation. Would also like to get a listener for when the whole animation is complete. Looking into using

transitionDefinition

to build out the flow. Is that the best way to accomplish something like this?

Is it somehow possible to pass a value from a parent composable draw scope to a child’s draw scope? I’d like to create (and cache) a

LinearGradient

brush in a parent draw modifier, and have a child composable’s draw modifier later use that same

LinearGradient

. (This would ensure that I have the same colours and size when the child uses it.) Follow up q: is there anything that I can use within a draw scope that would allow me to know the current composable’s coordinate offset relative to another parent? I.e. the compose equivalent of

offsetDescendantRect

Is there a way to disable a

FloatingActionButton

that I'm missing? cause the only solution i can seem to find is just copying the declaration from compose and adding a new parameter

Hi all, I’m trying to use compose navigation but when I want to use

navController.navigate("my_route")

, I got an error because it doesn’t find any signature with just a string as first parameter. Someone have any idea why? My full source code:

@Composable
fun Screen() {
  val navController = rememberNavController()
  NavHost(navController, startDestination = "movies") {
    composable("movies") {
      MovieHome(navController = navController, movies = movies) {
        navController.navigate("movies_detail")
      }
    }
    composable("movies_detail") {
      MovieDetails(movie = joker)
    }
  }
}

Regarding the Compose Pagination library, I know it’s a little early to ask this since it literally just dropped (Thanks everyone for your hard work!), but is there a cleaner way to save scroll state and pagination data when using

LazyColumn

with

pager.flow.collectAsLazyPagingItems

? Right now in order to save both state and items I’ve been lifting out the

collectAsLazyPagingItems

output and storing it directly in the fragment since I can only call this method in a @composable and the queried list item data is nested into the PagePresenter.

Just wondering if Compose has the equivalent method of

View.announceForAccessibility(String)

?

Is there a way to inform the composer that data has been written to a list that doesn't involve duplicating said list each time I need to update it? I'm updating said list at 50Hz which feels like undue strain to put on the GC if im leaking that much memory

Trying to explore compose desktop, separating my android dependencies, dagger would probably work since it's decoupled from android but what about networking? Is retrofit android dependant?

How to pass styled attributes to

AndroidView

?

Want to render 2 Text lablel on image and image will be download from server using CoiI Image. The problem is when render the image after getting from server text label is hide or went in background. Is there any way to render the text after image dowloaded?

Is it possible to position UI element in relation to root? I’m gathering element position with `onGloballyPositioned`’s

positionInRoot

after that I would like to show another composable which would be full screen (would have the same size as root) and then position some composable in a position I gathered before. Is something like that possible? Maybe there is a method that will let me put (or try to put if it’s in bounds)

placable

position relative to root?