Questions tagged [kotlin-coroutines]
A language feature and a library introduced in Kotlin 1.3 that is used to implement the "green threads" model. It allows writing non-blocking IO code in a natural way, without resorting to futures or callbacks.
kotlin-coroutines
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TestScope doesn't work in Kotlin Multiplatform
I was trying to run a unit test of my kmp code on android(local) with TestScope by injecting it into the view model.
Here's the code:
class FrankfurterRepository(engine: HttpClientEngine) {
private ...
- 111
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Jetpack Compose CRUD application views don't refresh
I'm new to Android Compose. I'm generally teaching my daughter how to code and we decided to start with something that has an UI,so we chose Android to start. I made an app in Jetpack Compose and I ...
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Switch between account online and offline in android kotlin
I am student learning android application developing and now I want to develop application that I will make user online and offline I have API for both of them which I send user token to API.
I make ...
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How Do You Pass A Function Into Foreground Services In Android Studio
I'm trying to create an application in Android Studio that consists of a timer that runs in the background. To achieve this I'm passing the timer functionality into a foreground service class. However,...
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Is it ok to call both joinAll() then awaitAll() on a list of coroutine jobs to enure my Android viewmodel waits for all jobs to complete?
My current android application has a strange bug associated with running multiple kotlin coroutine jobs to call back end json apis.
initially I had the following code in an Android viewmodel:-
val ...
- 4,846
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I would like some help regarding an async between a compose navigation and a ViewModel update
I'm quite new to android kotlin and i have a little problem regarding my login. When i press the login button i immediately get directed to the home screen but before the ViewModel can be updated so i ...
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Kotlin execution order mix with different scope and coroutines
I'm trying to figure out the order of the execution of coroutine. Here is my example.
fun theCoroutineOrderWithDifferentScope() = runBlocking {
coroutineScope {
println("in the ...
- 13
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Kotlin coroutine context inherited by 'async' block
Please consider the following scenarios in which I'm using a ThreadLocal as a Kotlin coroutine context element.
Scenario 1 - use withContext() to set the value of a ThreadLocal on an inner block:
val ...
- 3,239
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What is the difference when we call withContext with coroutineContext and Job?
I am confused about working with withContext in Coroutine. I was calling withContext in a suspend function with the IO dispatcher. In that case, in some situations, the coroutine is canceled because ...
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Is it recommended to implement StateFlow in a Custom Kotlin Flow class
I want to create a Custom Flow class which should be a Hot Flow. So it recommended to create something like below
class ContentFlow(context: Context, initialValue: SomeObject) : StateFlow {
...
- 372
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Variable not updated in a Coroutine
I made a coroutine to update the value of a variable, but it doesn't work:
fun findNameById(id: Long): String {
var name = ""
viewModelScope.launch(Dispatchers.IO) {
val ...
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How does Room DB with Flow works?
I’m experimenting with Room and Coroutines Flow observables in a simple project, but I'm encountering an issue where the Flow emits multiple times.
In the app, I’m fetching all data from the user's ...
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Ktor: launch long-running task then immediately send HTTP response
How do I properly launch a long-running task in Ktor sever without waiting for its completion, i.e.
launch and immediately send the HTTP response back.
In this answer: https://stackoverflow.com/a/...
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how to fix this warning "GlobalScope, This is a delicate API and its use requires care"?
I'm currently learning how to build a Music App using compose and media3. onIsPlayingChanged(isPlaying: Boolean) in this method I'm using GlobalScope, Android studio give me this waring "This is ...
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Crash | Can't access Looper on Coroutines Dispatchers.IO
I'm executing some tasks on Coroutines Dispatchers.IO like this to achieve concurrency:
fun postMessage(request: Request) {
CoroutineScope(Dispatchers.IO).launch {
val requestHandler = ...
