I encountered a lint rule that doesn’t allow me to pass a custom default modifier to a method and instead recommends that I simply use the default

Modifier

// Not allowed
fun TestComponent(
    modifier: Modifier = Modifier.fillMaxWidth().preferredSizeIn(maxHeight = 200.dp)
)

// Instead, it recommends that you do this
fun TestComponent(
    modifier: Modifier = Modifier
)

Could someone shed some more light on why this is a guideline? Since this is intentionally enforced, I’m sure there is a very good reason to do this. It’s obviously more reusable which makes complete sense but I wonder if this is one place where it would be okay to have some flexibility.

I got compose to work in one existing project of mine. Now I'm trying to add it to another and I'm getting NoSuchMethodError: No static method setContent Any ideas? I have

buildFeatures {
compose = true
}

composeOptions {
kotlinCompilerVersion '1.4.21'
kotlinCompilerExtensionVersion '1.0.0-alpha09'
}

kotlinOptions with useIR = true and jvmTarget set to 1.8 What else could be going wrong? I'm getting a crash at runtime. Everything in the IDE (latest canary) looks fine. Gist: Latest everything. No compile issues. Runtime issue when just hitting

setContent

and nothing else. Edit: Only other thing I can think of is that I use some dependency that is forcing an older version of kotlin? I tried to use ./gradlew dependencies to figure out, but everything looks like its 1.4.21 Another edit: There literally has to be a better way to get a better error message. Literally have no idea whats going on 😭 I already have been able to get compose working in past projects. I quadruple checked that I followed these steps correctly https://developer.android.com/jetpack/compose/setup#add-compose (except that I'm using kotlin 1.4.21, alpha09 of compose, and Canary 3 of AS. Could really use any bump in the right direction. Thanks!

Does anyone have paging 3 RemoteMediator implementation with Jetpack Compose?

What , if anything right now, would be considered Compose's equivalent of SwiftUI's

@Binding

?

Any plannings for adding these function?

<R, T : R> LiveData<T>.observeAsState(initial: R, *policy: SnapshotMutationPolicy<R>*): State<R>

We no longer need to use

ExperimentalFocus

annotation right? Not sure if it was removed in

alpha08

or

alpha09

Hey, we use the

BottomDrawerLayout

. Since the use of

nestedScroll

within the

BottomDrawerLayout

, Lists in the Views won't scroll anymore. Even if we set

gesturesEnabled = false

, the Drawer opens when trying to scroll a list. Any ideas?

Hi. Why do we use the following in build.gradle?

tasks.withType(org.jetbrains.kotlin.gradle.tasks.KotlinCompile).configureEach {
    kotlinOptions {
        jvmTarget = "1.8"
        freeCompilerArgs += ["-Xallow-jvm-ir-dependencies", "-Xskip-prerelease-check"]
    }

What is paging-compose equivalent for

adapter.retry()

?

Could not find androidx.ui:ui-tooling:1.0.0-alpha09

The ui-tooling artifact has not been updated? Should I stick to the previous version?

What are the applicable solutions for asynchronously loading images from remote URLs in Compose’s scroll view? I try to use onCommit to load asynchronously in Image and recompose the UI to show the image. But this way will cause UI freeze when sliding? Do you have any good suggestions？（These codes run in Compose for desktop platform）

@Composable
fun NetworkImage(url: String, modifier: Modifier) {
    var imageBitmap by remember { mutableStateOf<ImageBitmap?>(null) }
    imageBitmap?.let {
        Image(bitmap = imageBitmap!!, modifier = modifier, contentScale = ContentScale.Crop)
    }
    onCommit(url) {
        ImageLoader.instance
            .loadUrl(url)
            .listen {
                if (it.status == Status.success) {
                    imageBitmap = it.content
                }else{
                    println("image load failed.")
                }
            }
            .exec()
    }
}

Hi, How can I remember my

LazyColumn

scroll position aver navigating with compose navigation ? I thought hoisting a

LazyListState

up to my

NavHost

would work but it doesn’t apparently

Has anyone come across issue using

AndroidView

with

TabRow

....content for other tabs are fine but one with the AndroidView is overlapping tabs....though I could be missing something basic I should be doing with modifiers etc (screenshots in thread)?

What's the minimum AS version required to use compose alpha09 ? I tried to use bleeding edge Arctic Fox Canary 3 but found it bugy, fails to show suggestions sometimes so planning to downgrade.

Is it possible to use

LazyColumn

like

ScrollableColumn

with

reverseScrollDirection = true

?

Hey Guys, I'm struggling finding a way to scroll a

ScrollableColumn

to the right offset. I have a

TextField

that I want to be visible when the keyboard appears and resize the view. Any idea ?

Hi. Can someone tell me how i can achieve the following shape in a surface. i tried cubic and bezier shapes but no one fits perfect. It is a red background and the bottomLeft and bottomRight cornors should be inverted. Thx

Hi, how can we check if component is being rendered in AS preview ?

is there any way to change two different state at the same time without recomposing?

The compose repository hasn't been updated in six days😝

For those of you who are following along from home, we've recently moved active development from

androidx-master-dev

to

androidx-main

. You will need to check out the new branch if you're building at home and/or just watching the repository for interest. If you are contributing, changes should please be sent to the

androidx-main

branch instead of the old branch.

Is it possible to lock user input to Captial Letters only? capitalisation parameter in Keyboard Options launches keyboard with capital letters but also allows the user to toggle it back to lowercase. Should I use visualization transformation here?

When using

TextField

, I randomly get cases where the keyboard doesn’t come up, is it a know issue ? do I need to do something special ?

How can I provide window insets to the main FragmentContainerView? I've TextFields on some of the pages and I want entire app to be lifted up on keyboard shows up. Currently this requires reopening keyboard for the first time for insets to get applied and it only lift the screen till the TextField, all the content below it is being hidden by the keyboard.

I’m trying to update to alpha 9, but I’m getting

This version (1.0.0-alpha09) of the Compose Compiler requires Kotlin version 1.4.21 but you appear to be using Kotlin version 1.4.20 which is not known to be compatible.

Everywhere my project defines a Kotlin dependency we are using 1.4.21. I can see in my Gradle dependency report that something is forcing Kotlin to 1.4.20 in the

kolinCompilerClasspath

configuration, but I don’t see anything that would indicate what is doing that. Any tips on troubleshooting?

Are 

Providers

  and 

Ambients

 like a Dagger inject where I can get a dependency without passing it as a param anywhere? Is there a best practice on their use? https://developer.android.com/reference/kotlin/androidx/compose/runtime/Ambient

Can someone share insights on how to use

rememberLazyListState

with

LazyColumn

for a chat interface? JetChat in

compose-samples

still uses

ScrollableColumn

so it doesn’’t help much, especially in these areas: • How do we smooth scroll to show a new incoming message? Since we only have relative-based

smoothScrollBy

instead of

smoothScrollTo(0f)

(on

reverseLayout = true

), it’s hard to get to the right spot and

snapToIndex(0)

is unnatural • How do we get measurements of the specific message component sizes to make the right relative scrolling calculation? I’ve seen

chatScrollState.layoutInfo.visibleItemsInfo

but i’m not sure how to get updates when

layoutInfo

changes, sticking it inside

LaunchedEffect

doesn’t fire • How do we know when we are getting to the end of the

LazyColumn

so that we can fetch older messages and add them to the list? • In the case where new messages are coming in or old messages are being added, how do we maintain existing scroll position without the whole list jumping around?

Attempting to use a bottom sheet to edit a record in a database. This has a few

TextField

in it, and a row of buttons to close, save the record, and delete the record. If I tap into any of the text fields, the keyboard pops up, and pretty much the only decent thing to do at this point is use

windowSoftInputMode

set to

adjustResize

on the base activity. Now, my problem is, the keyboard stays up after the bottom sheet is collapsed. I found

AmbientTextInputService

has a

hideSoftwareKeyboard

method, but I don't know where I'm supposed to get the required input session token from? Anyone know? So far, I'm finding text editing to be really complicated in Compose. What am I missing here? I'll drop the code I have into the thread.

Can someone explain me how I can create an animation in a composable function which will be executed every time the composable is called

@Composable
fun ShowAnimatedHeader(oldTitle: String, newTitle: String) {
   Box {
      AnimatedVisibility(visible = false, exit = slideOutVertically()) {
         Text(text = oldTitle)
      }
      AnimatedVisibility(visible = true, enter = slideInVertically()) {
         Text(text = newTitle)
      }
   }
}

Every time the oldTitle or newTitle change i want to animate the old one out and the new one in. but it is only executed the first time the composable is called

What's the magic incantation for a column that is as wide as its widest child, and forces all the children to be that width?