LaunchedEffect not triggered when mutableStateOf has same value? I want to display a snackbar message when the user clicks on “Favorite Post” It works fine the first time but after that it is not getting triggered anymore. Here is my snackBarMessage State in ViewModel:

var snackBarMessage: MutableState<String?> = mutableStateOf(null)
    private set

and the set function:

fun setSnackbarMessage(msg: String?){
    snackBarMessage.value = null
    snackBarMessage.value = msg
}

Here is my Launcheffect which unfortunately is not getting triggered twice:

LaunchedEffect(key1 = viewModel.snackBarMessage.value){ 
    val message = viewModel.snackBarMessage.value
    message?.let {
        scaffoldState.snackbarHostState.showSnackbar(message, "Ok")
    }
}

and on Favorite button click I call:

viewModel.setSnackbarMessage("Added to Favorite")

Eventhough I set the snackBarMessage to null it is not getting retriggered, only if the string message is different from the one before. I want to show the snackbar every time the user clicks on the button and not just the first time

Question: How can I get a "only enter numbers"

TextField

?

We are trying to use paging together with sticky headers. But now instead of using

items(pagingItems) {}

, we have to iterate through the items manually, do

pagingItems.peek(index)

and add single

item {}

one by one:

@Composable
fun PlainPaging(pagingItems: LazyPagingItems<Item>) {
    LazyColumn {
        items(pagingItems) { item ->
            when (item) {
                is Item.Header -> Text(text = item.title)
                is Item.Data -> Text(text = item.text)
                null -> Text("placeholder")
            }
        }
    }
}

// vs

@OptIn(ExperimentalFoundationApi::class)
@Composable
fun StickyPaging(pagingItems: LazyPagingItems<Item>) {
    LazyColumn {
        for (index in 0 until pagingItems.itemCount) {
            when (val item = pagingItems.peek(index)) {
                is Item.Header -> stickyHeader { Text(text = item.title) }
                is Item.Data -> item { Text(text = item.text) }
                null -> item { Text("placeholder") }
            }
        }
    }
}

Is this going to have some performance implications? Is there a better way to do it? Thanks

Hi :) Has anyone managed to add Firebase in a project generated by Kotlin's Wizard for Android and iOS? I mean, there is only one gradle file for composeApp module and the project level gradle. So, I am confused about the necessary dependencies and plugins and where to add them. Reference: https://medium.com/@niranjanky14/how-do-you-configure-your-firebase-project-for-android-app-in-compose-multiplatform-c239c8cb4d4a

Hello is it possible to add

kotlin-parcelize

for Kotlin library/module (not-android) ? Can anyone share how as I am getting error regarding android package. ? Here is my kotlin module

build.gradle.kts

plugins {
    id("java-library")
    id("org.jetbrains.kotlin.jvm")
    id("kotlinx-serialization")
    id("kotlin-parcelize")
}

java {
    sourceCompatibility = JavaVersion.VERSION_1_8
    targetCompatibility = JavaVersion.VERSION_1_8
}
dependencies {
    implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.4.1")
}

Functions which invoke @Composable functions must be marked with the @Composable annotation

any workaround to change data (outside Composable) placed inside state?

I am experiencing a strange memory leak with Compose with AnimatedNavHost from Accompanist and AndroidView. 1. Start from page A that contains an AndroidView 2. Navigate to page B (without popping page A) 3. (Page A is removed from the composition (onDispose called etc)) 4. Page B is popped off the stack, returning to A 5. Repeat indefinitely. Every time page A is displayed, a new View is created and the previous Views never get garbage collected. Any idea why this might be happening? Is it possible that a reference to the View could be accidentally stored somewhere or could this be a bug in Compose/Accompanist/Navigation? An additional possibly important detail: GC happens normally if A is popped off the navigation stack. EDIT: I managed to debug this and find the root cause. I will write an explanation in 🧵 later if anyone else experiences the same issue. Done.

I have this simple data class. What should I do to make it possible to use jackson to (de)serialize from-to json? I'd prefer not to specify property names explicitly.

data class MyClass  @JsonCreator constructor (
    var changedAt: Date,
    var from: Int,
    var to: Int,
    var percentChanged: Int,
    var levelUsed: Int,
)

hey guys, anyone encountering this error on iOS?

Uncaught Kotlin exception: kotlin.native.internal.IrLinkageError: Can not get instance of singleton 'Plugin': No class found for symbol 'io.ktor.client.plugins/HttpTimeout.Plugin|null[0]'

ktor = "2.3.8"

Is there any way, to align top of the text with my icon?