How is mockk's allAny() used I can't find any documentation on allAny() that I can understand. The official documentation describes it as a "special matcher that uses any() instead of eq() for matchers that are provided as simple arguments". I don't understand what that means. I have a line that goes every { mockObject.method(any(), any(), any(), any(), any(), any(), any(), any(), any()) } returns 0 I thought allAny() might be able to replace repeated use of...

Kotlin Worker Pool - Long Running Kotlin Coroutine and Java Heap OutOfMemory I'm trying to replicate a Worker Pool in Kotlin: https://gobyexample.com/worker-pools It works wonderful, but my problem is that I get OutOfMemoryError because all object references from the worker coroutines are kept in the heap as long as the coroutine is running. How can I avoid this problem? Here is my code: I create a channel in Service A and receive the data everytime a channel object is received. class...

CardView CheckBox Empty Space I am making a very simple Android app using Kotlin that has a checkbox list. The checkbox only works when I click on the box itself or the text beside it. My question is: How do I check the boxes by clicking on the empty spaces next to the texts?

Kotlin multi platform flow block convert to custom wrapper flow use for ios I have a kotlin multi platform project which contains apollo graphql api in this project i have BaseRepository Class and in this class there is a method to execute query or mutations suspend fun executeQuery(query: Query): ApolloResponse { val response = getApolloClient().query(query).execute() checkOperation(response) return response } suspend fun executeMutation(mutation: Mutation): ApolloResponse { val response =...

How to implement a recycler view inside a viewpager2 Basically, I want to add a recycler view inside a viewpager2 which will have 3 tabs that can be swiped left/right to switch tabs, and in each tab there will be present the recycler view which can be swiped vertically. But every time I try to do that either viewpager2 is working (when the height of viewpager2 is set to match parent) or the vertically scrollable recycler view (when the viewpager2 height is set 0dp) I am not getting any solutions from anywhere.(I am using kotlin for my app) For...

How to access GcpKmsClient instance I'm following this offical Tink how-to: https://github.com/google/tink/blob/master/docs/JAVA-HOWTO.md Everything works as expected after some fiddling, but I noticed that default constructor for GcpKmsClient is deprecated, and the following is recommended: GcpKmsClient.register( Optional.of(masterKeyUri), Optional.of(pathToSaKeyFile) ) Question is: How do I get access to the...

How to get the list of values that belong to a group after groupBy operation in Kotlin? I have the following data: import kotlin.test.* import java.util.* data class Sales(val year: Int, val price: Int) val myList = listOf( Sales(2017, 10), Sales(2017, 19), Sales(2020, 15), Sales(2021, 100), Sales(2020, 20), ) I want to see how to get the list of values for each group. For example, I want the result as {2017=[10, 19], 2020=[15, 20], 2021=[100]}

Why can't you change a property value permanently in kotlin? Here's the code: class Person(var firstName: String, var lastName: String) { var fullName: String = firstName + lastName fun fullName() = firstName + lastName override fun toString(): String { return fullName() } } fun main(){ val test = Person("test", "fortest1") test.lastName = "fortest2" println(test.fullName) } The result will only be testfortest1. It looks like you are working with a copy of test once test is created.

For Kotlin/JS project conversion I'm getting type mismatch: inferred type is XXX but ZIndex? was expected When trying to add a z-index to a Kotlin JS project the documentation doesn't provide an example: https://kotlinlang.org/api/latest/jvm/stdlib/org.w3c.dom.css/-c-s-s-style-declaration/z-index.html css { zIndex = 12 } I need to know what's the right way to assign a z-index in Kotlin-JS. So far I tried to use 12.px but I get errors such as: Type...

How to declare Singleton instance in Kotlin , is it similar to how we declare Singleton class? In an interview I was told to write a Singleton class so I wrote the following code object Ant{ } but later he asked me to write Singleton instance which confused me and I ended up writing like this object what{ } now, I know I am wrong but I am really curious how to write down Singleton Instance.

What is "androidx.lifecycle.BundlableSavedStateRegistry.key" in this bundle? I'm using toolargetool to investigate why the app is crashing from TransactionTooLargeException. I'm seeing there's this key androidx.lifecycle.BundlableSavedStateRegistry.key which can be around 400 KB when I put the app into the background. What is this key and where is it coming from? How can I reduce the size of this in the bundle?

Label doesn't scale down correctly to 0.07f, but if I use font.setUseIntegerPositions(false), it shows both label and font in libGDX I try to make a label to display "You Win" and add it to winStage, but I cannot manage to display the label correctly on winStage. Some words don't show on the screen, and if I downscale further than 0.044f, the String disappears. when I add font.setUseIntegerPositions(false) to my code, the font shows correct, but the wrong label also shows. Is there a way to get this work? (hide the wrong label or get the label shows correctly), code uses Kotlin, but very similar to java <a...

Math in development((( Sup, guys! I have a task to calculate coordinates of continuation line between points A & B. I have a code each calculate distance between these points, and I have tangent of angle for calculating next points D and F. Thanks for any help `val pointA = LatLng(a.latitude, a.longitude) val pointB = LatLng(b.latitude, b.longitude) val...

Shares of Lifecycle Livedata ViewModel with ViewBinding I'm still new to kotlin. So I want to try lifecycle, livedata, and viewModel in my study project, using moviedb as its data. But since Android Kotlin Extensions dependency is deprecated, I have to use viewBinding as an alternative, but when I run the app, it goes error like this: 2022-06-28 11:39:19.935 25250-25250/? E/AndroidRuntime: FATAL EXCEPTION: main Process: id.kotlin.belajar, PID: 25250 java.lang.RuntimeException: Unable to start activity...

How to Create module class for work manager dependency in kotlin I have a Worker class that needs an app repository class and the app repository class depends on the API service class. API service class in an interface. I do not know how to create a module class that provides dependency for the Worker class. I create a module class below @Module @InstallIn(ViewModelComponent::class) object ApiModule { @Provides fun provideLaunchListApi(retrofit: Retrofit): API { return retrofit.create(API::class.java) } I doubt that I am not passing correct input for...

How can I execute multiple instructions for a when condition in Kotlin? I am trying to execute multiple lines of execution for a when condition in Kotlin, without using an if-else statement. However, kotlin is complaining and returning an error. How can this be achieved? For example: when(studentAnswer2){ quizAnswer2 -> points+=25 quizAnswer2-1 -> points += 20 println("The answer $studentAnswer2 is within 1 point of $quizAnswer2") quizAnswer2+1 -> points += 20 println("The answer $studentAnswer2 is within 1 point of...

Switch video subtitles with ExoPlayer while a video is still playing Let's say I have two subtitles for a video, how do you switch an exoplayer's subtitles while the video is playing without resetting the player itself? Like for an example when a user click a button By following the exoplayer documentation, my current implementation is like this: binding.button.setOnClickListener { val k = player.currentPosition // Get the latest player's current position subtitle =...

Google Pay API for OCR/Card Scanning Has anyone integrated google pay api OCR in the android application. https://developers.google.com/pay/payment-card-recognition/debit-credit-card-recognition Also can I just use OCR feature from the API without using any other payment features. Any help is appreciated

arrow validation more then 10 fields all I have a question how can I validate more then 10 values with arrow in kotlin. fun CreateEventDTO.validate(): Validated = name.isEventNameValid() .zip( about.isAboutValid(), phone.isPhoneValid(), price.isPriceValid(), location.isLocationValid(), startDate.isStartDateValid(), // TODO add common validation for date // endDate.isEndDateValid(), status.isEventStatusValid(), access.isEventAccessValid(),...

Android problem creating multiple AutoCompleteTextViews dynamically I want to dynamically create input views, which each contain an AutoCompleteTextView. Each AutoCompleteTextView shows a Dropdown list. I have defined an item view (item_new_product.xml), which gets inflated and added to the viewContainer (activity_main.xml). Each AutoCompleteTextView has defined a dropDownAnchor in xml, which is the view ID of its parent TextInputLayout. This is where the dropdown list should show up. For the first item the Dropdown appears in the right place (see <a...

Connecting to URL requires authentication in Kotlin I'm beginner in kotlin. I'm try to connect to my http service, wich requires authentication. Have error: Unresolved reference: Authenticator How can I set Authenticator? var url = URL ("https://myURL") val authenticator = object : Authenticator() { val passwordAuthentication: PasswordAuthentication? get() = PasswordAuthentication( "user", "password".toCharArray() ) }

Generate producer function based on yml configuration I'm not even sure if this is possible, but it would be really amazing. I have some configuration in my yaml file. Does anyone know it is possible to kind of generate a javax.enterprise.inject.Produces function from this? My initial thought would be to use some kind of for loop, but then I would be doing something in a function itself, and I'm not sure whether it would be picked up.

Jetpack Compose: TextField grows outside of AlertDialog If you run the following composable and enter a long multiline text into the textfield, you will see that as the text grows, it leaves the AlertDialog. Is there a way to fix this? Ideal would be if it would grow to a certain point and then start scrolling. import androidx.compose.foundation.layout.fillMaxWidth import androidx.compose.material.* import androidx.compose.runtime.* import androidx.compose.ui.Modifier import androidx.compose.ui.tooling.preview.Preview @Preview @Composable fun...

How to print paging flow data in kotlin I want to know is there any way to print data in console when use collect function. activity.kt lifecycleScope.launchWhenCreated { viewModel.dataList.collect { adapter.submitData(it) } } viewmodel.kt val dataList = Pager(config = PagingConfig( pageSize = 1 ), pagingSourceFactory = { ViewPagerPagingSource(currentDateLimitDataSource) }).flow

android modern development: how can I understand user did not changed any data in a screen? I built a fragment, using jetpack compose for adding views on screen and state and view model classes for saving state. first time when I navigate to this fragment, fetch API is called and If I have any value on this API, I filled text fields with them. It is possible that the API is empty and do not return any value. Users can enter any data on this text fields or can ignore them because filling the text fields is optional and when he/she clicks on submit button; the data is saved in server...

Not sure what context does an inner flow operate on I have a question about the context in which an inner flow produces flow produces. Consider the following code. withContext(Dispatchers.Main) { val flowA = flowOf(1,2,3,4) val flowB = flowOf("a","b","c") flowA.flatMapConcat { num-> val bResponse = flowB.first() //would this operate on Dispatchers.Main OR IO flowOf(bResponse) }.flowOn(Dispatchers.IO) } } I have a nested flow and I am unsure on what context would the...

RxJava Unit test Observable interval I have a network polling function with Observable interval in my repository class repository @Inject constructor( private val api: api, private val schedulerProvider: SchedulerProvider ) { private fun networkPoll(): Observable { return Observable.interval(1L, TimeUnit.Seconds, schedulerProvider.io()) .startWith(0L) .flatMap { api.getStatus().subscribeOn(schedulerProvider.io()).toObservable() } } private fun...

How to set One to many relation in android room DB in kotlin I have two tables. First table is as below @Entity data class GramPanchayatSurveyEntity( @PrimaryKey var gpCode: Int, var distCode: Int, var locationTypeCode: Int, var location: String, var latitude: String, var longitude: String, var googleLocation: String, var distanceBtwHeadQrToGp: String, var recommendedHeightOfTower: String, var BBNL_Exist: String, var anyCongestion: String, var nearByGpCode: Int, var surveyBy: String,...

Kotlin set lazy field through Java reflection I'm trying to play around with Java reflection in Kotlin, and I have the following field in my Kotlin class: val tree: Tree by lazy { getTree(hashGroup, service) } I'd like to set this field through Java reflection, and so far I got to this point: val tField = transaction::class.java.getDeclaredField("tree\$delegate") tField.isAccessible = true tField.set(transaction, newTree) Obviously this is not going to work, because the tree field has a delegate (tree$delegate) and it wants me to...