Converting date from XMLGregorianCalendar with ZoneId.systemDefault() to timestamp with UTC I have xml with tag 1994-11-30 I need convert it to json with timestamp date in utc. My code: fun convertXmlToJson(profile: NotifyGetDocsRqType): JsonNode? { return objectMapper.valueToTree(profile.data) } Birthday field in class NotifyGetDocsRqType @XmlElement(name = "Birthday") protected XMLGregorianCalendar birthday; As a result I am getting json with Birthday = 786142800000. By utc this value is 29 November 1994, 210000 (checked here <a...

Why won't the recomposition trigger for my LazyColumn I have a LazyColumn which has multiple lists which it's supposed to display depending on the index value. However, when I change the index the list changes, but the items do not get redrawn until I scroll down and back up. I've tossed around the remember keyword, changed my logic N times and it still won't update. Here are my classes @Composable fun MainContent() { val state = homeViewModel.state.collectAsState(initial = HomepageState.Loading) Theme(config = config) { when...

Create custom list in dialog (kotlin) My task is to make list of accounts in dialog. I have navigation and when I click one item It swich to new dialog. Code: nav_view.setNavigationItemSelectedListener { when(it.itemId){ R.id.changeAccountsID->startDialog(acountsList) } true } In function startDialog I have: Provided list: acountsList: ArrayList < AccountsList> val listView: ListView val inflater = layoutInflater val view = inflater.inflate(R.layout.accounts_list,...

Quarter counter (kotlin) Ok, so first off I want to say that I am a newer programmer and I'm self taught. I'm currently trying to wrap my mind around how I would make a program (I'm using Kotlin) that would count the number of quarters out of a give value, and state the left over change. so if I type input: 1.45 output will tell me: 5 quarters 0.20 Change Now, I have done research on void methods, but I'm still confused on what that looks like. would anyone be willing to help me out on how id get started with this?

Screenshot when clicking the share button I'm building a news app in Android Kotlin, and I'm adding there a share button in order for the users to share the news with each other. My question is that I want to achieve this: if the user clicks the share button, then automatically to be made a screenshot and the news to be sent as a screenshot, not a deep link. How can I achieve this?

reverseCase along with swap Integer in kotlin I am trying to write an effective code to reverse Case in kotlin . for e.g HeLLo 5worLD6 -> hEllO 6WORld5 Initially I am trying to swap digit's but forEachIndex doesn't change in my existing list . Why? val uniqueWords = str.split(" ").map { it.toCharArray() } uniqueWords.forEachIndexed { index, chars -> chars.forEachIndexed { charIndex, c -> val endIndex = chars.lastIndex - charIndex if(c.isDigit() && chars[endIndex].isDigit()){...

Trying programmaticly to space a grid layout evenly I have a GridLayout which should show 25 Buttons spaced evenly. To be able to set an onClickListener without calling each one them I want to do that programmatically. I made a layout resource file with the grid itself to bind it and being able to inflate it activity.xml Now I'm creating the fields: override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) val bingoField = (1).rangeTo(25).toSet().toIntArray() binding =...

Derived query method asking for a parameter value I set up an interface: interface VarInterface{ val var: String } Created a derived query: fun findDistinctByOrderByVar(var: String): List But when I call it I am asked to enter a paremeter value: fun getVar(): List { return varRepository.findDistinctByOrderByVar() } Why is this?

Kotlin - Test methods in companion object I have a class UserUtils, where in the companion object I have methods to validate different fields. Then I use these methods across different files, because they all have the same input that needs to be validates. But how do I test them in mockito ? class UserUtils { companion object { @Aurowired latent var userService: UserService fun firstInputValidate(input: User) { //logic } fun secondInputValidate(name:String) { } } } I already have...

I tired to implement clean architecture, how does clean code and architecture matter? I'm a self-taught software developer I have worked with several tech companies for more than 6 years. Currently, I work as a senior android developer in a company which I'm responsible for the mobile development department, I have delivered apps for customers that my managers are satisfied with. I see myself as a senior and highly skilled as my co-workers and managers say. Recently I started looking for new opportunities in bigger companies I had many interviews and always pass screening,...

How to stop a suspend function from being called twice? I have a repository class that gets some data from Firebase: class ItemsRepositoryImpl @Inject constructor( private val itemsRef: DatabaseReference, ): ItemsRepository { override suspend fun getItems() = flow { Log.d(TAG, "Test") //Gets triggered twice try { emit(Loading) emit(Success(itemsRef.get().await())) } catch (e: Exception) { emit(Error(e.message)) } } } Here is my ItemsRepository: interface...

how to set custom return type nullable in kotlin I made a personal data type "email" how can I make this type nullable in value. For example. private lateinit var a: email? or fun makeEmailAddress(a: String): email? { // TODO }

How can I update the toolbar when scrolling with CollapsingToolbar I'm trying to move from one TextView to the Toolbar when it collapse when scrolling. Let's say I have a Toolbar and just below of it I have a View, when I scroll up and it starts to not be visible at all I want to update the toolbar with this text, here's an example. I've been reading with the CollapsingToolbar but I can figure it out when the view is not that visible and if I have to create like a custom Toolbar...

registerForActivityResult and onActivityResult onActivityResult in Kotlin I am currently trying to learn from a step-by-step tutorial to upload an Image or File to my server while using Volley. This tutorial is a little bit outdated and I really don't understand how I can fix these issues. the tutorial onActivityResult(Int, Int, Intent?): Unit' is deprecated. Deprecated in Java Fragment is...

Search bar appearing when swiping down in Kotlin I'm building an Android app using Kotlin, I wanted to implement a search there but I want it somehow hidden (just like the search bar is in every iPhone), which will only show up if you swipe down. Can this actually be implemented in an android app?

Kotlin strange behaviour with chunked, async and await I'm doing some code that involves a number of parallel requests in batchs from elements in a list and I'm facing a strange behaviour: https://pl.kotl.in/joFkWgV13 It should display "holamundo" but sometimes this example prints "mundomundo" instead. What I'm missing here?

Jetpack Compose + Paging3 RemoteMediator propagate errors I'm trying Jetpack Compose and I've create a simple app to consume the Star Wars Api (https://swapi.dev) with Ktor, Room, Hilt, Paging3 and Material3. I can't understand how to propagate any eventual error catched during the data fetch. AppDatabase.kt @Database( entities = [ SWCharacter::class ], version = 2, exportSchema = false ) abstract class AppDatabase : RoomDatabase() { abstract fun people(): PeopleDao }...

app crashes because of nav component argument when putting the app in the background I get the following error when i put my app in the background,or when i press the recent apps button while in the app: java.lang.RuntimeException: Parcelable encountered IOException writing serializable object (name = com.example.mappractice.data.LocationItem) This is the class wich generates the error(this is used as an argument for a fragment): data class LocationItem( val name: String, val locations: List ): Serializable This is where the argument is used: override fun...

Kotlin dagger hilt injection is not initialized i am trying to use dagger hilt, i set up everything, but i am getting and error when i try to use the object for witch i am created a dependency injection : kotlin.UninitializedPropertyAccessException: lateinit property exoPlayer has not been initialized Here is my module provider : @Module @InstallIn(ServiceComponent::class) object ServiceModule { @ServiceScoped @Provides fun provideExoPlayer( @ApplicationContext context: Context, audioAttributes: AudioAttributes...

Is retrofit post data to api in background thread automatically Hi all I have question is retrofit post data to api in background thread automatically or should I use something like RXjava to make it?

How do I chain operators over lists in rust? Looking for equivalent to kotlin code I have the following code in kotlin and I'm trying to find a rust equivalent, but don't understand the chaining mechanism in rust to convert. val windowSize = 2 listOf(1, 2, 3, 4, 5, 6) .windowed(windowSize, 1) .map { it.sum() } .windowed(2, 1) .count { it[0] < it[1] } It just takes a list of integers, splits them into pairs (but the windowSize will be a function parameter), sums those groups, splits the sums into pairs again, and finds where each second element is bigger than the...

Calling method from Fragment in RecyclerView Adapter - Lateinit property textView has not been initialized I have a list of items. When I swipe on an item, I want to update a textView in the Fragment. I use a RecyclerView. In the Adapter, I detect when a user swipes something, and then I try to call a method in the Fragment to update a textview. However, when I try it crashes with "LateInit Propery TextView has not been initialized". I have tried initializing the textView in the adapter instead, but I don't think that's correct and it seems impossible as findViewById doesn't really work in an...

Is there a Kotest assertion to test if a list contains some element with a given property? I have two objects that have some features in common that I would like to compare data class Pet(val colour: String, val owner: Human, val legCount: Int) data class Car(val colour: String, val owner: Human, val isElectric: Boolean) I would like to assert that some element in a List contains an element with the same colour and owner as a given Pet. Here's a fake code example to illustrate what I'm trying to do: cars.containsElementSatisfying { car -> pet.colour shouldBe car.colour...

How to acces shared viewModel in my recyclerAdapter My viewModel contains som variables such as how many cardViews should be created in the recyclerView. Therefore i am looking for at way to acces the same viewModel object in my adapter class. Is there a way to do so or a better alternative? My code is in kotlin

backgroundTint property colores the whole TextInputEditText I want to set color just for editText underline. how can I achieve it ? as I mention in title, I tried to set backgroundTint property, but instead of coloring underline, the whole TextInputEditText is being colored xml

How to handle configuration change (dark mode to light mode) in scroll view as well as exposed drop down menu When i switch to dark theme in my app, the scroll view comes back to the top of the activity layout as well as the exposed dropdown menu values changed to the default one or get blank, it doesn't stay on the option i had selected before changing the theme. How can i handle these two problems?

Kotlin - Reading the least significant bit (Steganography) I am creating a program that can read the least significant bit of a image file using Kotlin. I have a function that reads the bytes in a file, but I am unsure how to actully print the bytes in the function consumeArray. My goal is to print the least significant bits of a image. override fun run() { val buff = ByteArray(1230) File("src\\main\\kotlin\\day01_least_significant_bit_steganography\\eksempel_bakgrunnsbilde.png").inputStream().buffered().use { input -> while(true) {...

How to shuffle the order of items when using ConcatAdapter? I'm going to use two types of views in the recyclerview. Each item can be added or deleted. Rather than checking the ViewType using a single Adapter, I know that it is a ConcatAdapter and try to use it. By the way, is there a way to arrange the order the way I want when using ConcatAdapter? As mentioned, the order is not consistent, as items can be added and deleted between each item. The ConcatAdapter I found out is After listing A's items, I could only find a way to finish listing B's...

Android: 3D viewer library (with rotation/translation/zoom) that supports raycasting/hittesting? I am looking for an Android library in order to add a 3D viewer in my Android app. This Android 3D viewer should manage gestures in order to rotate/zoom/translate the 3D model, and should not be a mess to integrate. Should also support raycasting/hittestting ( = ability to detect clicks on the 3D model, and which part of the mesh in the 3D model has been hit) I didn't manage find any correct tool... Thanks for your help.

How to control navigation by default string resource in RecyclerView? I have successfully completed a navigation into RecyclerViewAdapter to navigate many destinations by string Resource. Because I have many lists, and each TextView it's about separate fragment. It's wonderful to do it. But I have a small problem. That's I have 2 string Resource, "en" English as a default and "ar" as a second language. My app is working well when I use it by English locale. But it crashes when I use it by Arabic locale. What I want is: To control or force the app when it...