What is the effect using

NonCancellable

in the following case? Would it outlive the scope and finish the job?

viewModelScope.launch {
    withContext(NonCancellable + <http://Dispatchers.IO|Dispatchers.IO>) {
         // some job
    }
}

I am using KMP, kotlin 1.4.32, and on android using compose beta06. When I upgrade to beta08 I get errors due to my kotlin compiler flags. For that area where compose and kotlin intersect where should I ask my question? Here or somewhere else. I am nervous about using discuss.kotlinlang as I expect it will be flagged again.

I am a little fuzzy on why the following method

someDbCall()

should be a

suspend

function.

private fun someDbCall() { //some db call }

someScope.launch {
    someDBCall()
}

Do you have a personal philosophy such as don't use suspend keyword unless the compiler forces you to as I have been reading on Stack overflow?

someScope.launch {
    withContext(NonCancellable + <http://Dispatchers.IO|Dispatchers.IO>) { someDBCall() }
}

If you do have a philosophy of not using suspend keyword when not needed then how does construct like withContext affect using them with non-suspend keyword function.

Hi everyone, MVI is better than MVVM ?

Can we define method return type as generic. something like this

suspend fun <T> commonPost (query: HashMap<String, String>, mUrl : String) : DataState.Success<T> {
        val mClient = KtorClientFactory().build()
        val res = <http://mClient.post|mClient.post><MemberResponse>("${baseURL}$mUrl")
        return DataState.Success(res)
}

I want to create a generic method that will call multiple APIs using ktor.

How to download a pdf from a url and save in internal storage of app ?

Does anyone know a benchmark between Parcelable and KotlinX Serialization ProtoBuffs? Does it make sense to use KxS ProtoBufs as a replacement for Parcelables? 🤔

Paging: let’s say I have a RemoteMediator backed by room dao. If I make a manual change to a single item in database, will updated pagingData be emitted? e.g. marking item as favourite

Do people feel that

StateFlow

is a good replacement for

LiveData

on Android? There is often a noticeable delay in updates, which leads to the UI to represent incorrect information when it first shows up. That never happened to me with

LiveData

.

Hi everyone I want to split my app and break it down to different modules. Is this an advisable pattern

This message was deleted.

2 files found with path 'META-INF/AL2.0'.

this started to appear all of a sudden in my project. why? what does this mean?

Hi mates, I'm making a module in my multiplatform library, and now I am trying to create this module with 

build.gradle.kts

. Here is how my build file and

buildSrc

looks like, everything builds OK, but I have highlighting issues. Maybe the problem is my runtime classpath contains the dependency while compile classpath doesn't. So does anyone know how to inspect this?

👋 I’m here! What’d I miss?

Hey i want to add items in array list using getter in kotlin. Can someone explain what i am doing wrong here.

private var categoryType = arrayListOf<CategoryType>()
    get() {
        if (category1List != null) {
            field = arrayListOf(CategoryType.Category1)
        }

        if (category2List != null) {
            field = arrayListOf(CategoryType.Category2)
        }

        if (category3List != null) {
            field = arrayListOf(CategoryType.Category3)
        }
        return field
    }
enum class CategoryType(val valueName: String) {
    ALL("ALL"),
    Category1("Category1"),
    Category2("Category2"),
    Category3("Category3");

    companion object {
        fun getArray(): List<CategoryType> {
            return values().map {
                it
            }
        }
    }
}

Have a question regarding Play Console and testing tracks. Is this the right channel? Don't want to be in the wrong place 😅

Hi mates, i just want to ask ...which one is better live data or Kotlin flows? why? with proper reasons. Thanks

I want to pass parameter in function but it giving error  This syntax is reserved for future use; to call a reference, enclose it in parentheses: (foo::bar)(args). Also i want to make a genric runFunction which can take any parameter i.e. Int, String etc. In this example code i am sending sumInt(2) to runFunction also i want to send concatenateString("John"). Anyone Know how to achieve this.

How can I list togather with data class in kotlin

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Hello friends, I’m experiencing NullPointerExceptions on my fragments when I migrated it to ViewBinding. I am following exactly based on the documentation https://developer.android.com/topic/libraries/view-binding#kts but it will throw NullPointerException on the

private val binding get() = _binding!!

line. Thanks in advance for the help!

Hi there, is there any way a can rum multiple coroutines in parallel then resume when all of then are completed ? Something like that.

viewModelScope.launch {
    launch { a = one() }
    launch { b = two() }
    print(a+b)
}

Hello folks. Let's say i have a method to check internet connection inside my ViewModel that's something along these lines: internal fun callToCheckIfInternetConnectionIsAvailable( onConnectionAvailable: () -> Unit = {}, onConnectionUnavailable: () -> Unit = {} ) { if(networkChecking.checkIfInternetConnectionIsAvailable()) { onConnectionAvailable() } else { onConnectionUnavailable() } } And then i pass something like this from my Activity: viewModel.callToCheckIfInternetConnectionIsAvailable({ onConnectionUnavailable = { Toast.makeText(applicationContext, "Bla", Toast.LONG).show() } }) When it is passed to my ViewModel, it will be interpreted as a method since it's wrapped by a lambda. Although that is true, the content inside that lambda, contains lifecycle-related references such as a View. Could passing this instruction to a ViewModel cause a memory leak if the LifecycleOwner(Activity/Fragment) gets destroyed in the meantime? And besides that, would it break the MVVM pattern? Really curious to know your thoughts on the matter. Thank you in advance K

Is

Activity Results API

stable for production use?

In an Android project what's the purpose of

kotlinOptions.jvmTarget

? I'm wondering because we don't write Java Code so what prevents me to set it to

16

?

How to use jetpack datastore with retrofit interceptor to append header on every request? Datastore doesn't seem to support return type without Flow api.

Hello folks, how are you doing? Hope you're doing great. So i have these two classes:

class MainActivity : AppCompatActivity() {

    private val viewModel: MainViewModel by viewModels()

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        runTaskOnBackground {
            viewModel.errorStateFlow.collect {
                println("CALLED")
                Toast.makeText(applicationContext, "$it", Toast.LENGTH_LONG).show()
            }
        }
    }

    private fun runTaskOnBackground(task: suspend () -> Unit) =
        addRepeatingJob(Lifecycle.State.CREATED) {
            task()
        }
}

////////////////////////////////////////////////////

internal class MainViewModel : ViewModel() {

    private val _errorStateFlow = MutableStateFlow(0)
    val errorStateFlow: StateFlow<Int>
        get() = _errorStateFlow
}

The problem i'm getting is that both the Toast and the println i declared are being shown even without posting a value to that MutableStateFlow inside my ViewModel because the value I'm getting is the same as the default one. Looks like the MutableStateFlow is posting the default value automatically. Do you know why this is happening and if there's a way to avoid that? I've searched across the internet but couldn't find someone with the same problem. Thank you in advance K

How to use scaffold and nested graph in jetpack compose

Hi friends, is my

buildToolsVersion

correct? If yes it is currently throwing an error

Installed Build Tools revision 31.0.0 rc5 is corrupted