Hey guys can somone tell me what is the use of

private set

in here ?

var number : Int by mutableStateOf(0)
        private set

Hi everyone. In my android project, I set up minimal API to 21. But I can't use kotlin function String#chars() in order to transform a String to an array of chars. So I wonder if I can find the implementation of the extension function somewhere or if there is a simple way to do it ?

Hi There's a syncing problem that literally stopped me for a month from upgrading the AGP _(which will most likely fix an IDE false positive error about resolving common dependencies in

androidMain

)_; I'd be really happy to even get a clue of what to touch to make this work. I tried countless ways but nothing worked: https://stackoverflow.com/questions/73006307/gradle-sync-cannot-find-a-variant-matching-build-type-null-and-product-flavo

Hi folks, i'm trying to use window manager only in app activites. I dont want to get permission from user for this. Some of API devices it works without crash. In my device i'm starting the window manager service and putting a small view to screen and its staying all of activities as i wanted. When i throw the app to the background it's not showing and i want this so it's okay. But some of API for example 11.0 it throws an error for permission. Whatsapp doesn't even ask permission for video call. I dont know is it true way to do this but simply i have to create a view which can be draggable and must be appear all of activities in the app. and here is my code line

windowManager = getSystemService(WINDOW_SERVICE) as WindowManager

val inflater = baseContext.getSystemService(LAYOUT_INFLATER_SERVICE) as LayoutInflater

floatView = inflater.inflate(R.layout.floating_layout, null) as ViewGroup

webView = floatView.findViewById(R.id.webView)!!

LAYOUT_TYPE = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
    WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY
} else {
    WindowManager.LayoutParams.TYPE_TOAST
}

floatWindowLayoutParams = WindowManager.LayoutParams(
    150.toPx(baseContext),
    200.toPx(baseContext),
    LAYOUT_TYPE!!,
    WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,
    PixelFormat.TRANSLUCENT
)

floatWindowLayoutParams.gravity = Gravity.CENTER
floatWindowLayoutParams.x = 0
floatWindowLayoutParams.y = 0

windowManager.addView(floatView, floatWindowLayoutParams)

and when i want to start the view

btnWebView.setOnClickListener {
    startService(Intent(this, FloatingWindowApp::class.java))
}

Can you help me ?

Hey guys what this error means?

Serializer has not been found for type 'ZonedDateTime'. To use context serializer as fallback, explicitly annotate type or property with @Contextual

@Serializable
@Parcelize
data class NearestResult(
    val day: ZonedDateTime,
    val event: String
) : Parcelable

hey guys, have a channel for jetpack compose?

hi all 👋 ! When yall are creating a new library what is the minSdk version that you tend to target? Its not a UI library, but more of a utility lib, if that helps

I’m trying out Android ViewModels for the first time. It seems like the general practice is to have a

Flow

to watch the data changes from within the ViewModels, and then functions to pass events into the ViewModels, and to start loading etc. How should errors be handled when a network request fails? Should it be part of the observed Flow type, or is there a better way to handle this?

I am quite new with android and have issue that I do not know how to solve. I use Assisted injection with dagger hilt and I have ViewModelFactoryProvider that looks like this

@EntryPoint
@InstallIn(ActivityComponent::class)
interface ViewModelFactoryProvider {
    fun communityFeedViewModelFactory(): CommunityFeedViewModel.Factory
    fun postTileViewModelFactory(): PostTileViewModel.Factory
    fun reactionViewModelFactory(): ReactionsViewModel.Factory
    fun commentViewModelFactory(): CommentViewModel.Factory
}

Here is for example how i use it in ReactionsViewModel

class ReactionsViewModel
@AssistedInject
constructor(
    @Assisted private var reactions: PostReactions,
    @Assisted private var postId: String,
    private var reactionsRepository: ReactionsRepository,
) : ViewModel() {

    @AssistedFactory
    interface Factory {
        fun create(
            @Assisted reactions: PostReactions,
            @Assisted postId: String,
        ): ReactionsViewModel
    }

    @Suppress("UNCHECKED_CAST")
    companion object {
        fun provideFactory(
            assistedFactory: Factory,
            reactions: PostReactions,
            postId: String
        ): ViewModelProvider.Factory = object : ViewModelProvider.Factory {
            override fun <T : ViewModel> create(modelClass: Class<T>): T {
                return assistedFactory.create(reactions, postId) as T
            }
        }
    }
}

@Composable
fun reactionsViewModel(
    reactions: PostReactions,
    id: String
): ReactionsViewModel {
    val factory = EntryPointAccessors.fromActivity(
        LocalContext.current as Activity,
        ViewModelFactoryProvider::class.java
    ).reactionViewModelFactory()
    return viewModel(
        factory = ReactionsViewModel.provideFactory(
            factory,
            reactions,
            postId = id,
        ), key = id
    )
}

And here is how I provide reactions respository:

@Module
@InstallIn(ActivityComponent::class)
object ReactionsModule {
    @Provides
    fun provideReactionApi(retrofit: Retrofit):
            ReactionsApi = retrofit.create(ReactionsApi::class.java)

    @Provides
    fun providesRRepository(ReactionsApi: ReactionsApi):
            ReactionsRepository =
        ReactionsRepositoryImpl(ReactionsApi)
}

Problem here is that I need to use ActivityComponent in module where I provide repository. If i try to access this reactions repository in any other viewmodel it crash because it needs to be ViewModelComponent. Is there any clever solution how to fix it?

Hi ! I'm writing an android C++ plugin. But I am getting the following lines in the terminal. Are they a sign of a bad behaviour from the native side ?

I/System.out: referenceTable GDEF length=778 1
I/System.out: referenceTable GSUB length=6388 1
I/System.out: referenceTable GPOS length=66796 1
I/System.out: referenceTable head length=54 1

Hi everyone is there anyone who use accompanist pager library in production ? I`m facing issues when user scroll to next page it takes few milliseconds to compose the ui and in that milliseconds old page ui is shown that`s so weird behaviour?

Sorry for being offtopic, but I've got a question about

okhttp

and I didn't find a better place to ask this 😊 We're using

okhttp

with

Retrofit

and

Apollo

, and I'd like to get the full http request right before it is really being executed. I can get the

Call.request()

to get the request object but this one doesn't contain the headers we're adding through interceptors for example... Is there any extension to get the real request? Or am I correct to assume I can't use interceptors if I want to achieve this?

Hi! I’m developing an Android library that would be a container for some common code to be used. The problem is, I’m not able to use the extension functions defined in the library by a consumer app. The library is of course published and obfuscated, so I’ve tried to keep the file holding these top-level extensions in

proguard

-keep public class com.example.library.ExtensionsKt{*;}

but this only made using the function

ExtensionsKt.doSomething()

possible but not

Model.doSomething()

Any ideas ?

Hi any idea about this error when upgrade kotlin version from 1.6.20 to 1.7.10 and upgrade Android Gradle plugin AGP to 7.2.0 then run task call detektDebug task at the gradle i used detekt version 1.19.0 then i faced this error when run task incompatible classes were found in dependencies. Remove them from the classpath or use ‘-Xskip-metadata-version-check’ to suppress errors

Hello. I’m using kotlinx.serialization with

explicitNulls = false

, but I have 1 request, where I need to keep nulls… Is there a way to keep nulls for this particular request without creating a separate client for this? Thanks!

Hello, i have overridden onBackPressed()...

override fun onBackPressed() {
         if (supportFragmentManager.backStackEntryCount <= 1) {
             finish()
         } else {
             supportFragmentManager.popBackStack()
         }
     }

now sometime i am getting this exception

java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState

this may be happening bcoz state is getting saved and then popBackStack() is called... need help...how to handle this situation...i can put a check isStateSaved or not....but i want to handle those cases also where state is saved and user clicked on back press....What to do in such scenario...How to do back press handling when state is saved?? please suggest some solution.. Thanks a lot in advance.:thank-you:

hey I am opening camera from a site say abc.com on android smartphone on chrome. But when I use same abc.com and load it in a webview, pressing same button does not open camera. I have given Camera Permission in Manifest. Can someone suggest why it might be happening?my use case is to open camera from a web app say abc.com which is being displayed in webview of my app without using javascript interface. On this forum should only kotlin related questions should be there? Should I delete this question? can sombody pls dm me this?

Hello Team, Would like to know from team is there a Kotlin based Routing (Screen Navigation) library is available, like ARoute

hi everybody! I have an activity that observes a Flow in my VM. The VM is in charge of obtaining the user location, and fetching the nearby places. However, when I rotate the device, I see that the API request being fired again from the VM, and it looks like permission related:

@AndroidEntryPoint
class MainActivity : AppCompatActivity() {
    private val placesViewModel: PlacesViewModel by viewModels()
    private val locationPermissionRequest =
        registerForActivityResult(
            ActivityResultContracts.RequestPermission()
        ) { permissionGranted ->
            when {
                permissionGranted -> placesViewModel.getNearbyPlaces(locationPermissionGiven = permissionGranted)
                else -> showLocationPermissionDeniedExplanationDialog(permissionGranted)
            }
        }
    // region Activity lifecycle

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.main_activity)
        val adapter = PlacesAdapter()
        val recyclerView = findViewById<RecyclerView>(R.id.placesRecyclerView)
        val loadingProgressIndicator =
            findViewById<CircularProgressIndicator>(R.id.loadingProgressIndicator)
        recyclerView.adapter = adapter
        lifecycleScope.launch {
            observeChanges(loadingProgressIndicator, adapter)
        }
        checkForLocationPermissionsAndHandleResult()
    }

    private suspend fun observeChanges(
        loadingProgressIndicator: CircularProgressIndicator,
        adapter: PlacesAdapter
    ) {
        placesViewModel.uiState.collect {
            when {
                it.loading -> loadingProgressIndicator.visibility = View.VISIBLE
                it.places?.isNotEmpty() == true -> {
                    loadingProgressIndicator.visibility = View.GONE
                    adapter.submitList(it.places)
                }
            }
        }
    }

    // endregion

    // region Location permission related methods

    /**
     * Shows a dialog explaining that the [Manifest.permission.ACCESS_FINE_LOCATION] has been denied
     * and that a default location will be used in order to fetch the nearby places.
     */
    private fun showLocationPermissionDeniedExplanationDialog(permissionGranted: Boolean) {
        AlertDialog.Builder(this)
            .setMessage(getString(R.string.permission_denied_dialog_message))
            .setPositiveButton(getString(R.string.permission_denied_dialog_positive_button_text)) { _, _ ->
                placesViewModel.getNearbyPlaces(locationPermissionGiven = permissionGranted)
            }
            .show()
    }

    /**
     * Check for the [Manifest.permission.ACCESS_FINE_LOCATION] permission.
     * If the permission is granted, fetch the user's nearby places with [placesViewModel.getNearbyPlaces()].
     * Otherwise, show a dialog explaining that because of denying the location permission, a default location will be used.
     */
    private fun checkForLocationPermissionsAndHandleResult() {
        when {
            ContextCompat.checkSelfPermission(
                this,
                Manifest.permission.ACCESS_FINE_LOCATION
            ) == PackageManager.PERMISSION_GRANTED -> {
                placesViewModel.getNearbyPlaces(locationPermissionGiven = true)
            }
            shouldShowRequestPermissionRationale(Manifest.permission.ACCESS_FINE_LOCATION) -> {
                AlertDialog.Builder(this)
                    .setMessage(getString(R.string.permission_dialog_message_text))
                    .setNegativeButton(getString(R.string.permission_dialog_negative_button_text)) { dialog, _ ->
                        dialog.dismiss()
                        placesViewModel.getNearbyPlaces(locationPermissionGiven = false)
                    }
                    .setPositiveButton(getString(R.string.permission_dialog_positive_button_text)) { dialog, _ ->
                        locationPermissionRequest.launch(Manifest.permission.ACCESS_FINE_LOCATION)
                        dialog.dismiss()
                        placesViewModel.getNearbyPlaces(locationPermissionGiven = true)
                    }.show()
            }
            else -> {
                locationPermissionRequest.launch(Manifest.permission.ACCESS_FINE_LOCATION)
            }
        }
    }
    // endregion
}

am I doing something wrong here? when rotating the device

locationPermissionRequest

is generated again, to check for the permissions, so the VM is triggered again

anyone tried to use the new way of

startActivityForResult

? I have an Activity A that I start a Fragment A-2 inside, and that fragment A-2 starts another activity B, I need activity B to send back the result all the way to activity A using this new registerActivityForResult way

It looks like Qodana says it was designed for server usage. Has any one used the JVM support for Android? Is it a good choice for a quality checker for Android?

Hi there, is there way to shorten this code

var messageStyle: MessageStyle = MessageStyle.Large
    set(value) {
        var textStyle = 0
        var iconSize = 0
        var padding = 0

        when (value) {
            MessageStyle.Small -> {
                textStyle = R.style.TextAppearance_Sc_Components_Body2_Regular
                iconSize =  context.resources.getDimensionPixelSize(R.dimen.icon_size_small)
                padding = R.dimen.sc_space_xs
            }
            else -> {
                textStyle = R.style.TextAppearance_Sc_Components_Body1_Regular
                iconSize =  context.resources.getDimensionPixelSize(R.dimen.icon_size_regular)
                padding = R.dimen.sc_space_xs
            }
        }
        tvMessage.setTextAppearance(textStyle)
        ivMessageVariantIcon.layoutParams = ViewGroup.LayoutParams(iconSize,iconSize);
        setPaddingRelative(padding, padding, padding, padding)
        field = value
    }

Hey guys! Does anyone know if we have a replacement for the

ems

property in Jetpack Compose?

Hey guys, I am new in kotlin. I want to ask what is the best way of doing declare const val.

companion object {
   const val TABLE_USER_ATTRIBUTE_EMPID = "_id"
   const val TABLE_USER_ATTRIBUTE_DATA = "data"
}

vs

object DbConstants {
    const val TABLE_USER_ATTRIBUTE_EMPID = "_id"
    const val TABLE_USER_ATTRIBUTE_DATA = "data"
}

which is one recommended way ?

Could anyone try to help me with this ? https://kotlinlang.slack.com/archives/C09222272/p1658483494439749 I couldn't find an issue on android issue tracker or in the jetbrains issue tracker...

Hello, I'm actually trying to implement this but it is not working out. Can anyone help me with this? Thank you. https://stackoverflow.com/questions/54827455/how-to-implement-timer-with-kotlin-coroutines

Hi everyone, i have a separate Module in which i want to inject Activity using Hilt, but from app module if i start the activity app crash and logs are here: java.lang.NoClassDefFoundError: Failed resolution of: Lcom/gallery/Hilt_GalleryActivity; at java.lang.Class.newInstance(Native Method) I try to do rnd not able to find the solution so please anyone help me?

is there any way in Camera x that we get output as compressed.? any resources would be really helpful