Why is Java Sound API frame position getting stuck? I'm trying to create a sound recorder using Java Sound API on Kotlin Desktop. I want to automatically stop the recording after 3 seconds. The frame position does initially advance but then gets stuck. class VoiceRecorder { private val format = AudioFormat( AudioFormat.Encoding.PCM_SIGNED, 16000.0F, 16, 1, 2, 16000.0F, false ) private val info = DataLine.Info(TargetDataLine::class.java, format) private val line =...

Kotlin - Unable to update RecyclerView from fragment I have a fragment (FragmentAdd) with a button which is supposed to update the RecyclerView of another fragment (FragmentHome). Why isn't the RecyclerView updated? FragmentAdd: saveBtn?.setOnClickListener{ arrayList = getUpdatedList() val homeAdapter = HomeAdapter(FragmentHome(),arrayList) homeAdapter.updateRecyclerView(arrayList) } FragmentHome: override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? { val view =...

KMM - Error while requesting Multipart form data request body I am using ktor 1.5.0 and getting error on requesting multipart form data. in backend receiving the req body as follows. key params are receiving as null. {"null":["Some...

Subtract Date And Time in kotlin--How do I subtract these two dates in KOTLIN val dateFormat = SimpleDateFormat("yyyy-MM-dd HHmmss") val date1 = "2022-03-14 114327" val date2= "2022-03-15 114327" These are the two dates which i want to subtract

Why did my button activity cannot run me to the other page? This is my button. I not sure if that my button have the problem or the kotlin files have the problem. The Home fragment is using binding to bind with the home fragment. Maybe is the intent in the fragment have the problem?

This is my registration activity class RegistrationActivity : AppCompatActivity() { private lateinit var binding:ActivityRegistrationBinding private lateinit var db: FirebaseFirestore override fun onCreate(savedInstanceState: Bundle?) {...

How do I parse dynamic keys in retrofit 2 kotlin? I'm a newbie in using retrofit and I have no idea how to parse the following data in retrofit 2. the url im using to fetch this response is : link "ISBN:9781611748864":{ "bib_key":"ISBN:9781611748864", "info_url":"https://openlibrary.org/books/OL26092341M/The_Complete_Lord_Of_The_Rings_Trilogy", "preview":"noview",...

Jetpack Compose imitates Twitter user homepage Because scrolling nesting cannot be used, I used the following method to achieve the scrolling nesting effect. However, the effect is not ideal, and the scroll position of the list cannot be handled well when switching between pages. Is my way the best solution? Is there a better solution to this problem? Or how can this solution of mine solve the problem of alignment of the scroll position of the list? <a...

Analog of Java substring() and lastIndexOf() on Kotlin In java, this code worked: String tempDir = c.getString(0); tempDir = tempDir.substring(0, tempDir.lastIndexOf("/")); But I can't write this code in kotlin: var string: String = c.getString(0) var sequence: CharSequence = tempDir.subSequence(0, string.length) var indexLast = sequence.lastIndexOf("/",0,false) // error

PdfRenderer password required or incorrenct error I work on application that create pdfs and can view them. The problem is that for api 23->api 28, the application doesn't work as expected, I have a adapter with imageViews of first pdf page of last 5pdfs created by this app, and here is the problem, if I create pdfs without password, all works well, if I create 1 file with password, then all the files come like password protected files. And I get error java.lang.SecurityException: password required or incorrect password. For android 9 and up...

java.lang.NoClassDefFoundError: org/jetbrains/kotlin/backend/jvm/JvmLowerKt I had upgraded my kotlin plugin version from 1.6.0 to 1.6.10, after updating it i'm facing the below error in build while rebuilding the project, kindly suggest any solution to resolve this, thanks in advance NOTE: this error is not occuring when i'm using kotlin plugin 1.6.0 java.lang.NoClassDefFoundError: org/jetbrains/kotlin/backend/jvm/JvmLowerKt at org.jetbrains.kotlin.cli.jvm.K2JVMCompiler.doExecute(K2JVMCompiler.kt:63) at...

BLE Scan Started but doesn't find any device I'm trying create a plugin that scan BLE devices for Flutter. I did it in Kotlin and i started scan from Flutter via MethodChannel. I saw results in console on Android 11 but i can't see in Android 12. I saw this logs in Android 12 : D/BluetoothAdapter: isLeEnabled(): ON D/BluetoothLeScanner: onScannerRegistered() - status=0 scannerId=8 mScannerId=0 That's my code: private fun startBeaconScan() { val scanSetting =...

Height and Weight Picker Android I want to implement the functionality where user can pick height and weight by scrolling the pointer over the ruler. Basically I need to set the upper and lower bound of ruler to avoid over scrolling. And the value of movement of pointer should be displayed. So give me some idea to implement this feature.

Bottom navigation view with navigation component does not work as expected. Android I have 3 top-destination fragments (let's say fragments A, B, C). I can navigate between tabs as expected. However, when i navigate to another fragment from top-destination fragment (fragment A -> fragment A1), I encounter next issue: When i navigate to another top-destination fragment through bottom nav view, and navigate back (fragment A1 -> fragment B -> fragment A). App opens fragment A1 instead of fragment A and tab B is highlighted as active. Clicking on tab A do nothing. What is the...

How to mock a ProducerScope in Kotlin Flow? I'd like to test a function where I use the scope of a callbackFlow builder. Assuming I have a function inside the flow builder like this: fun items(): Flow = callbackFlow { val items = getItems(this) ... } Since the block uses a <a...

Filling LazyList before receiving data from Retrofit. EmptyList Error WEAR OS I am trying to fill a LazyColumn (ScalingLazyColumn for WearOS) with items received from an API using Retrofit. the idea is to parse the JSON answer into objects and then fill an Item's List from which to fill the LazyColumn. However when I run the app in the emulator the call to the API is made, and right after an empty List error occurs, which leads me to think that maybe the app is not waiting for a response from the server to draw the composables and so the Items List is still empty? But...

I do not see the problem with this data class Got this error "Expected BEGIN_OBJECT but was STRING at line 1 column 1" when trying to parse this to json data class RegisterRequest(val email: String, val username: String, val password: String) @POST("/api/user/create") suspend fun register(@Body request: RegisterRequest) : BasicApiResponse @Provides @Singleton fun AuthApi(): AuthApi{ return Retrofit.Builder() .baseUrl(AuthApi.BASE_URL) .addConverterFactory(GsonConverterFactory.create()) .build()...

How to resolve No Activity found to handle Intent I am getting an error when accessing camera the error is android.content.ActivityNotFoundException: No Activity found to handle Intent { act=android.media.action.IMAGE_CAPTURE flg=0x3 clip={text/uri-list {...}} (has extras) } this is where the error occurs try { val intent = Intent("android.media.action.IMAGE_CAPTURE") intent.putExtra(MediaStore.EXTRA_OUTPUT, mUri) startActivityForResult(intent, CAMERA_REQUEST_CODE) } catch (exception: Exception) {...

how to get permission result in kotlin I am trying to use a camera on my android. the user will be prompt for the permission of the camera. previously I used startActivityForResult and onRequestPermissionRequest for them. recently I found out that they are deprecated, so I'm trying out with registerForActivity. I managed to change to startActivity but I'm stuck at the permission request. I am wondering do I have to create another permissionlauncher or can I do the permission inside my resultlauncher. companion object{...

Kotlin, Intelejji IDEA ( "gradle-wrapper.properties" not found ) &amp; Unsupported class file major version 61 Could not open init generic class cache for initialization script 'C:\Users\danil\AppData\Local\Temp\wrapper_init.gradle' (E:\dd.gradle\caches\7.1\scripts\4owkpohf6femn0tkcx35du5j0). BUG! exception in phase 'semantic analysis' in source unit 'BuildScript' Unsupported class file major version 61 Не работает котлин в IntelliJ IDEA, не хочет воспринимать даже класс, чтобы запустить проект, не может его найти, а вот с java все он находит, вверху можно проект сразу запустить. А при Build проекта...

Kotlin 1.3.72 Using andriod extention or should I change. Is it safe? Good day. I am somewhat new to kotlin and android development. I found a helpful guide from a few years ago it uses kotlin extensions which I have come to release is a bit outdated and no longer used. I built my app with this "old" code. Not upgrading my kotlin. The app works fine. It will be used as an inhouse app to manage some stuff. Is there a good reason for me to change to the new version of the code? Thank you for all inputs and opinions.

Kotlin Realtime Firebase Post set autoincrement ID to database I would like to save an Item to Firebase. When I save one Item, then my structure looks like i want to look, but I have problem with ID: Trips -My6qIbSx5dnSy2yScAr date: "Feb 20, 2022 120000 AM" distance: "25" id: 0

Is it possible to add two lines of text to ShortcutManagerCompat? I am working on shortcuts in my app. One of the string is longer and doesn't fit to every screen size. Sometimes the words get cut and "..." appear. Is it possible to add a second line there? Or create a CustomeView? I haven't found any information about it in the documentation. Thanks

How to update the size of Dialog depending on the size of a list in a LazyColumn? I have an Dialog with a LazyColumn in which I display a list. With a Button, I add new items to this list and they are displayed. The problem is that every time I add elements to this list, the size of the alertdialog does not increase. For the size to update, I have to close and reopen the Dialog. Dialog(onDismissRequest = { isOpen.value = false }) { Surface( Modifier .padding(5.dp), RoundedCornerShape(5.dp),...

Map is not showing using osmdroid ver 6.1.11 Custom XYTileSource in Android 10 I used a custom XYTileSource to display a local map in Android 8 and its working, but the map is not showing when I tried it in Android 10.

convert arithmetic expression of a string type to an integer type? [duplicate] let just say there an arithmetic expressions like"((10-2)*3)/4" stored as a string variable how can I convert this into a Integer and get the answer 6 ? (thanks in advance)

Unparseable Date Kotlin with September Month with MMM format Ican't understand why I am getting error on Following code on September Month var dateFormat: SimpleDateFormat = SimpleDateFormat("dd-MMM-yyyy") val vdate:String="09-Sep-2022" val ndate :Date = dateFormat.parse(vdate) sampeltextview.text=ndate.toString() errori am getting is : Unparseable date: "09-Sep-2022" But when I change Month other than September for ex. Jun , Jul ect.

Unable to add window -- token null is not valid; is your activity running error. How can I solve it? I have a login screen. Switching to the HomeScreenActivity when the user logs in. I want to show a popup window message about user information when the activity is opened. But I'm getting an 'Unable to add window -- token null is not valid; is your activity running?' error. I have a popup layout that name is popup_user_information. I'm using view binding for this project. How can I solve it? package com.tcoding.instagramloginscreen import android.annotation.SuppressLint import...

I want to show a lock activity in front of any opening app for applock but when i use accessbility type "TYPE_WINDOW_STATE_CHANGED" I want to show a lock activity in front of any opening app for applock but when i use accessbility type "TYPE_WINDOW_STATE_CHANGED" it show lock activity after any screen change. Thanks in advance

SpringBoot GraphQL keeps failing with UnsatisfiedDependencyException This is a very simple, basic GraphQL application, sort of HelloWorld in GraphQL world. Same approach in Java seems to work, but Kotlin fails with following error 2022-03-13 223601.136 ERROR 10698 --- [ restartedMain] o.s.b.web.embedded.tomcat.TomcatStarter : Error starting Tomcat context. Exception: org.springframework.beans.factory.UnsatisfiedDependencyException. Message: Error creating bean with name 'graphQLServletRegistrationBean' defined in class path resource...

How do I pass navController parameter in this one? I'm kinda new to jetpack compose kotlin.This is my login screen function which takes 2 parameters: fun loginScreen( navController: NavController, onClick: (mobileNum: String, otp: String) -> Unit ) { //my_code } This is my navhost function composable(route = Screen.Loginscreen.route){loginScreen(navController = navController,onClick = {mobileNum, otp -> })} This is where I call the function. How do I pass the navController here?? class...