Hello, Does anyone knows how to get drawable image path as a string inside my repository without using any context?

private fun getListMedia(): List<EverfitMedia> {
    return mediaAttachmentListNew.filterIsInstance<EverfitMedia>()
}

Hello everyone, I’m using filterIsInstance, it’s not working, pls help me, many thanks.

Hi everyone! I have some experience with coroutine but none with Flow and I'm trying to use them in one of my view. I have my ViewModel `HelpViewmodel`and my view

HelpView

. The view is a custom view that extends

FrameLayout

and

LifecycleOwner

. The view is sometimes being hidden, sometimes being shown. So it goes through the states

onAttachedToWindow

and

onDetachedFromWindow

where I set my life cycle state:

override fun onAttachedToWindow() {
    super.onAttachedToWindow()
    lifecycleRegistry.currentState = Lifecycle.State.RESUMED
  }

  override fun onDetachedFromWindow() {
    super.onDetachedFromWindow()
    lifecycleRegistry.currentState = Lifecycle.State.DESTROYED
  }

From my

init

in the view I am collection the

uiState

, a StateFlow emited by my ViewModel.

viewModel.uiState.collectIn(this) { uiState ->
  loaderManager.dismiss()
  errorNetwork.isVisible = uiState is HelpViewModel.UiState.Error
  when (uiState) {
    is HelpViewModel.UiState.Loaded -> showContent(<http://uiState.help|uiState.help>)
    HelpViewModel.UiState.Loading -> loaderManager.show(R.string.help_loading)
    else -> return@collectIn
  }
}

The

collectIn

function is an extension function:

inline fun <T> Flow<T>.collectIn(
  owner: LifecycleOwner,
  crossinline onCollect: suspend (T) -> Unit
) = owner.lifecycleScope.launch { owner.repeatOnLifecycle(Lifecycle.State.STARTED) { collect { onCollect(it) } } }

My view is receiving correctly the new states at first but once it's hidden it stops collection the new uiState. My viewModel still emits some new state but the view seems to have stop subscribing to it or is not receiving it for some reason. Any idea why?

I've published the country code picker package for Jetpack compose. You may need it. https://github.com/togisoft/jetpack_compose_country_code_picker #jetpack-compose :kotlin-intensifies::android-wave::jetpack-compose:

Hi folks, I have a navigationGraph inside with Bottom Navigation and inside one of fragment that attachto bottom navigaiton, i have 4 other fragments with viewpager + tabs and in every fragment i have one recyclerview, everytime i switch the tab and again back to viewpager, as fragment recreated so adapter reset again and scrolling position move to top, how i maintain the state? i done rnd on few things but nothing help kindly is there anyone who can help me to achieve this? Thanks

What is everyone using as a date picker in Compose land?

Hi, recently i was learning on how to make custom views and i'm found out of the resources which using the method to inflate other views(from other xml activity). after trying it out to referencing the custom views in

activity_main.xml

in form of

<com.test_project.library.buttons.TestButton/>

, it did works perfectly, but i found out that i cannot override the text value because the

android:text

doesn't appear from suggestion. is this because the effect from inflating the views? or there is something that missing from the custom views class that i didn't declare it first so i cannot put text value in

activity_main.xml

?

If I’m using Paging 3 for my search list, I want to have a different Pager.flow each time I type something in SearchBox, right? Currently I’m doing this (collect from Paging flow into my SharedFlow):

private var currentSearch: Job? = null
private val debounceDelayMs = 500L

private val _searchPagingFlow = MutableSharedFlow<PagingData<TaskModel>>()
override val searchPagingFlow: Flow<PagingData<TaskModel>> = _searchPagingFlow

override fun searchByText(text: String) {
    currentSearch?.cancel()
    currentSearch = ioThenMain({
        delay(debounceDelayMs)
        repository.searchTasks(text)
    }) { pagingFlow ->
        pagingFlow.collect {
            _searchPagingFlow.emit(it)
        }
    }
}

but this approach won’t save current search items, because I’m using SharedFlow. What can I do here to make it work properly?

How to add and run script to generate image for mutils screen or app icon? I don’t have experience for this part, can you make me a reference document or link? Many thanks.

i am migrating from rxjava to coroutines and just stumped on something now. is there an equivalent to

local.onErrorResumeNext { remote }

with coroutines?

Hi i am trying out kotlin 1.7 features in my current Android application and have managed success with contextReceivers however I have one question... why is my "with" shown as redundant?

Hi, I am working on a lib to embedded in our customers apps. It contains a few screens and I am trying to build in some configurability. I have managed to pass in colors that can be used to override some of the elements in the screen but replacing fonts I am stuck on. If the host app has a font that needs to be used by the lib, how would I do that? Is it even possible?

i have declared some build config fields in the app module. I am not able to access it in other modules. Do i need to include those fields in every module's gradle file? Or is there some different approach to handle this?

Hi it possible to simplify this code in Kotlin

private fun getAmountLength(currency: CharSequence?, amount: CharSequence?): Int {
    return when {
        !currency.isNullOrEmpty() && !amount.isNullOrEmpty() -> currency.length + amount.length + 1
        !amount.isNullOrEmpty() && currency.isNullOrEmpty() -> amount.length
        amount.isNullOrEmpty() && !currency.isNullOrEmpty() -> currency.length
        else -> 0
    }
}

hi , any idea why this code snippet doesn't work for buildString , only currency is evaluated , amount and ratepercent are skipped

spannableAmount = SpannableString(buildString {
    currency?.takeIf { it.isNotEmpty() }?.let { currency ->
        currencyLength1 = currency.length
        append("$currency")
    }
    amount?.takeIf { it.isNotEmpty() }?.let { amount ->
        amountLength1 = currencyLength1 + amount.length
        append(" $amount")
    }
    ratePercent?.takeIf { it.isNotEmpty() }?.let { rate ->
        rateLength1 = amountLength1 + rate.length
        append(" $ratePercent")
    }
})

❓ Hi, I am very beginning in android dev. I want to learn kotlin. Should I need to buy books? I am just learning hear and there from random tutorials. First I take it as a fun. Now I want to take it serious as a career. Thanks in advance

Has anyone ever gotten a

ClassCastException: LinkedHashMap can't be cast to X

When using

by lazy{X}

? I think this is the second time, though haven't had it in a while. Code:

class MyFragment : Fragment() {

private val foo by lazy { MyDialogFragment(params) }

fun myFun() {

foo.show()

}

}

How can merge multiple list to form alternative elements ? We have kotlin zip function to combine two list and to form alternative element list , zip is limited for two list, I have to do for multiple list . what is best approach to do

I need to pre populate a database with large amounts of data.

How do you represent dates in Android with Kotlin? 1️⃣ java.util.Date 2️⃣ kotlinx-datetime 3️⃣ A value class wrapping a Long number of milliseconds 4️⃣ Desugared Java 8 time APIs 5️⃣ Other, please tell us more in thread!

Hello! A beginner question: Does koin 3 annotations impact build time?

Hi all, Looking into LiveData ViewModel and Data DAOs and Repositories. I understand you would link a ViewModel with an Activity and thus the data is linked to Views in the Activities View. But how do you link a ViewModel to the Application. Like a User Data, which is needed by multiple Activities. Thus holding one copy of the LiveData for the entire Application. Thanks

Hi! I sometimes get bug reports with the following stack trace:

java.lang.IllegalArgumentException · parameter must be a descendant of this view
ViewGroup.java:7024 android.view.ViewGroup.offsetRectBetweenParentAndChild	
ViewGroup.java:6946 android.view.ViewGroup.offsetDescendantRectToMyCoords	
NestedScrollView.java:1445 androidx.core.widget.NestedScrollView.isWithinDeltaOfScreen	
NestedScrollView.java:1999 androidx.core.widget.NestedScrollView.onSizeChanged	
View.java:23959 android.view.View.sizeChange	
View.java:23892 android.view.View.setFrame	
View.java:23751 android.view.View.layout	
ViewGroup.java:7277 android.view.ViewGroup.layout	
LinearLayout.java:1829 android.widget.LinearLayout.setChildFrame	
LinearLayout.java:1673 android.widget.LinearLayout.layoutVertical	
LinearLayout.java:1582 android.widget.LinearLayout.onLayout	
View.java:23754 android.view.View.layout	
ViewGroup.java:7277 android.view.ViewGroup.layout

I have never been able to reproduce it so I have no idea where it is coming from. It always happen from the same screen. The screen is mostly composed of several fields that the user has to fill up. Most of those fields are

EditText

but the users don't fill them directly. When they press on an EditText, a new activity is opened with a list os several items they can choose from once the select an item that new activity is closed, the user is sent back the form activity and the EditText is automatically filled in with the name of the item selected. The error seems to often happen after selecting a couple of items this way. that's what I can see from the logs but I haven't find a way to reproduce it. It is only happening to some users and not all the time. Mostly happening on Samsung devices but I recently say some reports from pixel devices. Any idea what could go wrong or how I could get more info to try to reproduce it?

In my current project we had to remove a function, which we copied from this Google Blog post, because the code has no licence. It seems very strange to me as the Android Dev team write this code for us to use it. Someone can help me how to solve this and give a good argument why we are allowed to use this code ? https://medium.com/androiddevelopers/a-safer-way-to-collect-flows-from-android-uis-23080b1f8bda

Hey guys. It would be very helpful if you have any idea on this: I have a text file with a long list of strings (12 thousand strings). Would it make sense for me to define a fixed list to use this in my project? Is it better to search through text or use a fixed data structure?

Is this channel only for android questions purely related to Kotlin? I see that @kenkyee is reacting to every single questions with :not-kotlin:

I Need to connect 2-3-4 devices in lan, locally and without internet. Is it possible to use Ktor as server in a device? An device become device server and other device can use API to send data.

I'm using

viewModelScope

to collect an endless Flow in my

viewModel

. In my unit test I want to "destroy" the ViewModel in order for

viewModelScope

to cancel the Flow collection. I'm calling

viewModel.onCleared()

but it doesn't cancel the `viewModelScope`'s children jobs. How can I make sure all coroutines started inside

viewModelScope

are canceled before my test ends, so

runTest

doesn't hang waiting for the coroutines to finish?

Hi this is a weird message. I am from Myanmar(Burma) where you heard about military coup from south east asia. I am annative android developer since where I got B.E degree from my university since 2017. I am pretty sure about my native android development. Now let me talk about my desired wish. I am trying to learn iOS development. But I am surely happy to be an Android developer. I heard KMM from my hear and start googling it. Please someone if enough time to help somebody to guide. Please choose me as a teacher or guider. I learn KMM by self. Its rare of resources and I am not enough to learn so detail things. Please can someone help me? I swear I will not distrub you with this. I just want to ask the most difficult thing that I faced not all the way in learning. I will learn by self. Please.