How do I save login session and tokens from api using Preferences DataStore in Kotlin? So I'm just starting to learn about Preferences Datastore and Login Sessions using an Api in Kotlin. I don't know how to save the login session and tokens so that when the app is closed and I open it again, I don't have to login again. How do I do this?

How to join a String list to numbered string in Java and Kotlin I have a String list like below. [ "Java", "Kotlin", "Python" ] Is there any way (in both Java and Kotlin) to get the final output as below using String.join() or any other simple way instead of using a loop and adding numbers manually? "1. Java\n2. Kotlin\n3. Python"

How to implement pagination in a graphql spring project? I recently got a requirement to implement pagination on a spring graphql project. Looking at the solutions for this, I stumbled upon https://github.com/spring-projects/spring-graphql/issues/103, where there is going to be support for this in the next major version I suppose. I tried to implement this in a sample project and I got a little bit stuck. The idea is that I want to use the...

How to collect a StateFlow within an Activity scope? To put it simply, this works well (MainFragment): private val mainViewModel: MainViewModel by viewModels() override fun onViewCreated(view: View, savedInstanceState: Bundle?) { super.onViewCreated(view, savedInstanceState) lifecycleScope.launch { viewLifecycleOwner.repeatOnLifecycle(Lifecycle.State.STARTED) { mainViewModel.screen.collect { ... } } } } But if I replace viewModels() by activityViewModels(), the StateFlow...

Problem in going from MainActivity to second with using Intent Problem in going from MainActivity to EditActivity, Android Studio, Kotlin Main activity: class MainActivity : AppCompatActivity() { private lateinit var myDbManager: MyDbManager override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) myDbManager = MyDbManager(this) val fbNew = findViewById(R.id.fbNew) fbNew.setOnClickListener { val intent = Intent(this, EditActivity::class.java)...

OutpuStream gives error ENOTDIR in Android application I am trying to copy a file that I pick from the gallery to the application's private directory but I cannot move past this point. First, my code is this private fun copyImage(context: Context, uri: Uri) { val fileName = getFileName(context, uri) val appPath = applicationInfo.dataDir if (uri.path != null) { if (uri.scheme == "content") { val imagesFolder = File("$appPath/images") if (!imagesFolder.exists()) { imagesFolder.mkdirs()...

why I cannot install a content negotiation on my ktor http client? Ive been following this: https://ktor.io/docs/serialization-client.html#install_plugin I want to use the ktor HTTP client for Ktor version 2.3 but when I write the code val ktorClient = HttpClient(CIO) { install(ContentNegotiation) } I get Type mismatch. Required: HttpClient Found: RouteScopedPlugin My imports are these: import io.ktor.client.* import io.ktor.client.engine.cio.* import...

Navigate from viewpager2 to another fragment (Androidx navigation) I have Orders fragment, into that I have viewpager2 for showing **current **and **old **orders. Now I want to navigate from viewpager2 fragments(current and old) to orderDetail fragment. findNavController().navigate(OrdersFragmentDirections.actionOrdersFragmentToOrdersDetailsFragment(it.orderId)) That work successfully, but when I want nav back like this findNavController().popBackStack() this crash happened java.lang.IllegalStateException: FragmentManager is already...

Android region specific translations loaded in other regions My app by default is in Spanish so string.xml texts are Spanish. Later i have other languages: For English i have strings-en.xml For Portuguese of Portugal i have strings-pt-rPT.xml For Spanish (Colombia) i have strings-es-rCO.xml The problem is that i have my device in Spanish (Spain) language and is loading the translations of strings-es-rCO why? If that strings are for a region specific, i would pick strings.xml values I have tested in english and Portuguese of Portugal and seems to work.

Getting Error inflating class fragment error while using view binding in fragments Since Kotlin 1.8 made view binding compulsory so I implemented it in main activity and fragment. But I am getting error inflating the class fragment Here is the main activity class. I think there is an error in inflating the main layout because of view binding. I have initialized navContoller which was working fine before adding code in home fragment class MainActivity : AppCompatActivity() { private lateinit var binding: ActivityMainBinding private lateinit var navController:...

What is place vs placeRelative in custom layout jetpack compose I am learning the custom layout from the doc. I went through the sample provide in doc for the custom column. I see there is using placeRelative so what does he doing? I was referring official video from the <a href=""...

How to share data from application in kotlin android studio? i have a button on which when i click it shows option on where to share all the data in that activity such as title, link, image video etc in android studio in kotlin or java i tried code given bellow using intent: btShare.setOnClickListener { val shareText = tvTit.text.toString() // Create the Intent val shareIntent = Intent(Intent.ACTION_SEND).apply { putExtra(Intent.EXTRA_TEXT, shareText) } // Start the chooser dialog val chooserIntent =...

Child selection when Parent Item is Selected in Nested Recyclerview (Single Selection) Requirement is like how can I track the Parent Item is selected, on which the child item can be selected accordingly. But in my case without selecting the parent Item child can be selected which I want to restrict. I am using Nested to show the parent and child in Recyclerview like Hotel is the Parent Item and according to the Hotel, Rooms are being Listed in child Recyclerview. Go through the attachment for better visibility <a href="" rel="nofollow...

Is there a way to guarantee coroutine execution order when using coroutineScope and launch? I have some code I want to test that uses structured concurrency in Kotlin: suspend fun logic(): Something = coroutineScope { launch { taskOne() } launch { taskTwo() } launch { taskThree() } launch { taskFour() } Something(...) } The tasks perform an HTTP request using a web client. In my tests I'm using MockWebServer: val server = MockWebServer() @Test fun logicTest() { server.enqueue(MockResponse().setResponseCode(200).setBody(read("one.json")))...

Facing unresolved reference. None of the following candidates is applicable because of receiver type mismatch Someone to please help me solve this issue that I get on correct kotlin code. To be precise, the issue occurs on all usages of isEmpty. Below is the error snippet. function invocation 'isEmpty(...)' expected return if (department.isEmpty) { ^ I have tried downgrading and upgrading to different versions of java as well as gradle but still the issue is consistent.

first build is black screen, second build is running I have a splash screen, when I build first time on any emulator which doesnt build before, after splashscreen I encounter with black screen. When I go previous page I see mainactivity page correctly. And I am closing app, and rebuild, black screen doesnt come and mainactivity is opening correctly. Why this happening? Manifest and SplashScreen.kt:...

Navigate to another screen and delete data in previous screen in one click I want to delete date from room database and navigate to MainScreen. When I try to do it in this way my app is crash, but date is delete. I also trying use delay() in coroutine but then data is not delete BottomMenu( tournamentOption = "END TOURNAMENT", deleteButton = true, deleteTournament = { scope.launch { viewModel.deleteTournament(tournament) } navigate(navController, Screen.MainScreen)...

How to call multi API in ViewModel on Android In my application I should show 5 recyclerview and fill data from server. I have 5 API for load data, these APIs routes such as : example.com/api/products/{category_name} For all categories such as : Mobile - Shirt - Shoes - Tv and all categories response is the same . Now I write this codes in ViewModel : //Mobile private val _mobileData = MutableLiveData() val mobileData: LiveData = _mobileData private fun callMobileProductsData() = viewModelScope.launch {...

Spring Boot getting error when file writing over a folder thats being used as a docker volume My Spring Boot application is designed to download bulk images into a specific folder, said folder is inside a docker volume so i can be able to access those images. Let's pretend this twitterDIr File path a is "/app/store/twitter/123456789" fun storeTweetsImages(twitterUserId: String): MediaStoringResponse { val twitter = twitterUserService.findById(twitterUserId) val tweets = findAllByTwitterUserId(twitterUserId) var retrievedCount = 0 val twitterDir =...

:app:kaptDebugKotlin failed Execution failed for task ':app:kaptDebugKotlin' I have updated sdk targetversion and compileversion to 33 and changed all Dagger, Kotlin, maps to latest version and unable to compile successfully. I spent more time on research but everything failed. How it will be handled? Please give options to solve this.

Kotlin Multiplatform /iOS: Gradient layer not showing in custom UIView I am trying to add a gradient view to a parent view, I subclassed a UIView and made changes following this Subclassing UIView from Kotlin Native Added a uikit.def file. package = Custom_UIKit language = Objective-C --- #import #import @protocol UIViewWithOverrides - (void) layoutSubviews; @end This is MyView class: import Custom_UIKit.UIViewWithOverridesProtocol import kotlinx.cinterop.\*...

OkHttpClient().Builder() unresolved reference I am starting with Android Studio and Kotlin, created a new application, added okhttp as reference and copied some first fou dexample code, some missing references were added with alt-enter, and successfully called a rest API. var client: OkHttpClient = OkHttpClient() val request = Request.Builder().url(url).build() client.newCall(request).enqueue(etc) In another example .Builder() is used to set the timeout but OkHttpClient.Builder() is unresolved, alt enter only shows rename or create....

Saving data in android 2023 I am developing a app for patients with traumas and have so called "skills" (what helps the patient in defeat a high stress moment) what can be anything from a text, video, picture and a audio record. This is a very simplifyed breakdown to make my problem understandable. I also save contact data of important people the patients want to call in that moment and so on. Now I face the issue of how I should save my data. This is my first time saving data in android. I found multiple solutions, of...

Kotlin Multiplatform Mobile : What to use as a replacement for java.util.Stack? I'm converting API code over from Kotlin JVM to Kotlin Native for use in a Multiplatform project, and cannot find a suitable replacement for the java.util.Stack class. I would really like to avoid attempting to write a duplicate class on my own, so I'm hoping to find an existing class out there. I've looked through the Kotlin Multiplatform documentation, StackOverflow, and the Kotlin website, but have not seen anything close to...

Use variable values in a cordova plugin i have created a cordova plugin for Android. I've tested it with hardcoded values to make it works, but now i need to abstract these values and set them up OUTSIDE the plugin, in cordova app. My plugin is written in kotlin. I don't want to use --variable VARIABLE="someValue", but i want that values were imported by a file. First of all, i've tried creating a script that's triggered in "after_plugin_add", but i've not solved. Then i've created a json file with values i need and imported it...

How to call API with Coroutines in Android In my application I have 3 APIs and for this I write below codes. All of my APIs as the same and for this I write general call API fun such as below : Enum class: enum class categories(val category: String) { MOBILE("mobile"), SHOES("shoes"), STATIONERY("stationery") } ViewModel codes: @HiltViewModel class HomeViewModel @Inject constructor(private val repository: HomeRepository) : ViewModel() { init { viewModelScope.launch {...

Spring JPA, Many to Many Cannot fetch from the non Owning Entity I have a many to many relationship between User and Role entities. When I create roles and a user then save them and add to user, I can fetch the associated roles from User instance, but cannot fetch users from the Role instance. I'm using Spring Boot 3.0.6, JPA and Kotlin. Here is my code. Entities @Entity data class User( @Id @GeneratedValue(strategy = GenerationType.IDENTITY) val id: Long = 0, val email: String, var name: String, val contactNumber: String,...

How can I underline some words in a text and make them clickable jetpack compose? I made a text and checkbox that writes the contract agreement for users, but there are two contracts in one text and they need to be underlined and the user should be able to click on these underlined texts. I wrote a code like this Screen Scaffold( topBar = { BackPopUp( navController = navHostController, route = RegisterScreen.SignUpHealthyLifeStyleGoalsScreen.route ) }, backgroundColor = Color.Transparent )...

How to avoid tags from try block in output on exceptions with kotlinx.html With kotlinx.html, exception handling looks counter-intuitive to me. In a try-catch block, tags created in the try block are still part of the HTML output even if an exception occurs. How can this be prevented. Example code: import kotlinx.html.ATarget import kotlinx.html.a import kotlinx.html.body import kotlinx.html.div import kotlinx.html.html import kotlinx.html.stream.appendHTML fun main() { System.out.appendHTML().html { body { try { div {...

Сan't get data from another fragment via sharedPreferences //FIRST FRAGMENT class StaffProfileFragment : Fragment() { override fun onCreateView( inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle? ): View? { // Inflate the layout for this fragment return inflater.inflate(R.layout.fragment_staff_profile, container, false) } override fun onViewCreated(view: View, savedInstanceState: Bundle?) { super.onViewCreated(view, savedInstanceState) val staffName =...