Kotlin filter list and return Either error or element I want to filter a list of objects and return either error or the element based on it's first match. Condition checker : fun check( element: Element ): Either { return when (element.linkType) { TYPEA -> { if (some condition) return Either.Left( Error( "Error")) else Either.Right(element) } TYPEB -> return Either.Left( Error( "Error")) else ->...

Kotlin collections for SQLDelight file are not importing (KMM) In my KMM project I'm using SQLdelight. My sample table has a List. Table: CREATE TABLE profile ( nikName TEXT, secretKey TEXT, description TEXT, tagList TEXT AS List ); According to documentation I created adapter: //TODO we cant use comas in this string. Convert to JSON object ListOfStringsAdapter : ColumnAdapter { override fun decode(databaseValue: String) = if (databaseValue.isEmpty()) { listOf() } else { databaseValue.split(",") }...

InvalidMutabilityException: mutation attempt of frozen kotlin.native.internal Exception I'm very new to the Kotlin Multiplatform and Swift language, I have a problem with KMM only the iOS part, I have successfully run this on Android but it fails on IOS due to concurrency issues. Kotlin code snippet : @Throws(Exception::class) suspend fun getResponse(data: String): String { var response: String client.responsePipeline.intercept(HttpResponsePipeline.Transform) { (_, body) -> when (context.response.status) {...

How to trigger Kotlin Flow sequentially and combine the result together? As title, I got two flows and need to trigger them sequentially first then combine the result. data class User( val name: String, val age: Int, ) data class UserStatus( val status: String, ) val flow1 = flow { delay(300L) emit(User("Tony Stuck", 50)) } val flow2(age: Int) = flow { val result = when { age > 60 -> "Over 60" age < 60 -> "Under 60" else -> "Equal 60" } delay(500L) emit(UserStatus(result)) } // The code below isn't...

App does not build after upgrading to 3.0.0 I got a problem with the qr_code_scanner library after upgrading my flutter to the new 3.0.0 e: /home/kalheeso/snap/flutter/common/flutter/.pub-cache/hosted/pub.dartlang.org/qr_code_scanner-0.7.0/android/src/main/kotlin/net/touchcapture/qr/flutterqr/QRView.kt: (23, 1): Class 'QRView' is not abstract and does not implement abstract member public abstract fun onRequestPermissionsResult(p0: Int, p1: Array, p2: IntArray): Boolean defined in...

Which layer disposer class belongs to it in clean architecture Where add disposer class in clean architecture in other word Which layer disposer class belongs to it

How can I share file with ACTION_SEND? I get a pdf file from the API using Retrofit Then I write the received request to a file. Now I want to share this file using Intent.ACTION_SEND, but I don't understand how to pass data to it for sharing api.getPDF(1, "aaa", "hello").enqueue(object : Callback { override fun onResponse(call: Call, response: Response) { val file = File(filesDir, "aaa.pdf") file.createNewFile() val fos = FileOutputStream(file)...

How do I clearKotlin Callback stack Main_thread starts an Activity-A which has a method called Callback. Main also starts a service that runs and sends a Broadcast and execution goes to Callback in Activity-A; however Activity-A had also called Activity-B which was executing when the event occurred. How does Activity-A get Activity-B off the Callback stack?

The problem is: Expected BEGIN_ARRAY but was BEGIN_OBJECT my problem is kinda common. After checking tons of resources i still cant find any solutions. In some cases people saying to use List of models, instead of models. But the problem existed with List of models. In this case i work with MVVM pattern. Let me show. Asnwer which i will get if example word: policeman {"head":{},"def":[{"text":"lawman","pos":"noun","ts":"lɔːmæn","tr":[{"text":"officer","pos":"noun","fr":1,"syn":[{"text":"policeman","pos":"noun","fr":1}]}]}]} The API looks like a...

Rerun StateFlow When Filter Needs to Change? I have a StateFlow containing a simple list of strings. I want to be able to filter that list of Strings. Whenever the filter gets updated, I want to push out a new update to the StateFlow. class ResultsViewModel( private val api: API ) : ViewModel() { var filter: String = "" val results: StateFlow = api.resultFlow() .stateIn(viewModelScope, SharingStarted.Eagerly, emptyList()) } It's easy enough to stick a map onto api.resultFlow(): val results: StateFlow =...

App crashes when sending image to Firebase storage So in my app i need profile images but when i select one it crashes my app. I added all the sdk's also tried fixing it by adding permission for Google photo's but that didn't help. I really have no idea what could have caused this problem I also added my bucket url so that doesn't give a problem or maybe I did this wrong? Here is my code. Function to store the image: fun storeImage() { if (resultImageUrl != null && userId != null){ val filePath =...

Fragment Transition Animation I am trying to animate 2 Fragments [Splash Fragment , Fragment 1] While the transition there is a white blank screen for small milli Secs which should not be there The code of Animation Resource File : - This file I was adding in Navigation file for a action in the field of enter Anim The navigation from my splash Fragment is as follows: Handler().postDelayed({findNavController().navigate(R.id.action_splashScreen_to_onBording)},3000) As mentioned the basic problem is while the...

How to revert to a previous version of kotling plugin in android studio? Recently I updated a kotlin plugin version in Android Studio and I get error : "Unresolved reference: synthetic ", Actually Im migrating to binding the app, so I have some parts with xml and binding, some parts with just synthetic, and some parts with compose, What Can I do?

Is there a replacement for actor yet? I find actor to be extremely convenient for sequential execution of background work and safe private state. Unfortunately, it is marked as obsolete and has been for some time. I can't find any information on a replacement, though there have been many flow additions to Kotlin Coroutines. Is there a way to achieve the same benefits as actor with the...

Close bottomsheet and when open it again the changes will still be there I made a bottomsheet with a couple of items, I make some changes into it and apply (it will close the bottomsheet), but when I open it again the bottomsheet resets, how can I keep the values that I chose before? It's a bottomSheetFragment. I want to save selected value from recyclerView and a number.

Android Bottom Sheet is not working in Fragment I have added the bottom sheet dialog on a fragment. Right now I can't open it. Whenever I click on the show button it doesn't work at all. How can I fix this problem? CreateFragment.kt class CreateFragment : Fragment() { lateinit var binding: FragmentCreateBinding; val viewModel: NotesViewModel by viewModels() private var color = -1 private val currentDate = SimpleDateFormat.getInstance().format(Date()) private lateinit var result: String private val job =...

Togglz with Kotlin: How to inject some dependency in my custom ActivationStrategy I have defined the file that references my custom ActivationStrategy in META-INF/Services/ as explained by the Togglz library, since I need to resolve whether or not it is activated through another logic that is in another Service. Now how do I inject this service that I need to consume? Since when trying the following: @Component class ActivationStrategyByProfile(@Autowired private val profileService : ProfileService) : ActivationStrategy { override fun getId(): String { return...

How to make TabLayout in Arc shape? I am trying to achieve to make the tabLayout in arc shape I tried many ways but did not make like that please suggest me how can I make my tabLayout like this in the given image. Thankyou In Advance!!

Room Database Android Entities and POJOs must have a usable public constructor. You can have an empty constructor or a constructor whose parameters ** package com.arrayofsilicon.myapplication import androidx.room.Entity import androidx.room.PrimaryKey @Entity(tableName = "DataTable") data class MyDataTable( @PrimaryKey(autoGenerate = true) val id: Long , val nameOfTransaction: String , val Amount: Double , val note : String , val date : String ) **

Why does calling KotlinCoreEnvironment.createForProduction cause IlegalStateException? I am interested in parsing a Kotlin program into its PSI elements. After some readings, I first set up a project by creating an environment and convert Kotlin source as a string to a KtFile. However, it seems calling KotlinCoreEnvironment.createForProduction(parentDisposable: Disposable, configuration: CompilerConfiguration, configFiles: EnvironmentConfigFiles) seems to be triggering this java.lang.IllegalStateException error. After googling, I tried changing JDK from 11 to 8, but it didn't...

Use 'instanceof' with @EventListener condition Spring Boot Is there any way to check the type of source in @EventListener condition ? Example:- @EventListener(condition = "#event.source instanceof MyCustomClass")

Update Timer interval time in Kotlin for Android I am learning Kotlin/Android and I created a TimerTask to call an API every x seconds depending on user's choice in a dropdown menu. I can create the task, but when the user updates the interval(x) value in the menu, a new task is created and the previous keeps running. I tried using cancel on the timer but the app crashes saying Timer already cancelled. How can I update the interval value of the timer and/or cancel the previous instances? This is the TimerTask class: import java.util.*...

Intent filter with navigation component to Receiving image data from other app My android application using navigation component to navigate between fragments. And the project only have single Activity and all others are fragments. My application is a social media application. i want to share the image from phone gallery to my application. when user click the share button on gallery my application want to shows on the sharing dialogue. I have used this intent filter on my MainActivity,then the share dialogue displays my app. but my requirement...

Surprising: JAVA wildcard codes cannot turn to KOTLIN It is a question about use wildcard in kotlins as the same in Java and my describes will comes with multiple codes example where I tried to make them work and it may be a long question. Thanks for review my question and sorry for use such a tilte since I want more people to see it. Recently, I want to design a series of classes in kotlin like abstract class A { abstract fun doASth() } interface B open class A1( val myB: T, ) : A() { override fun doASth() {...

How can I operate and filter StateFlow I have a code like below private var container = Container(null) private val stateFlow = MutableStateFlow(Container(null)) // every changes emits a stateFlow var currentString: String? get() = container.item set(currentString) { container = Container(currentString) stateFlow.value = container } // now I need filter null values for outsides, and return hot flow of Strings fun observeStateFlow(): StateFlow {...

I'm having :app:kaptGenerateStubsProdDebugKotlin problem when updating kotlin to version 1.6.10 I'm trying to update my kotlin version from 1.4.32 to 1.6.10 and also update gradle from 7.0.4 to 7.2.0. I get an error like in the screenshot below. How to solve it?

How to throw an new exception from client if refresh token is expired: Ktor Client KMM oAuth bearer token I have the following code to execute an use case from this guys: arkitekt. Long story short the use case build happends in a KMM shared module. Inside this use case i make HTTP request with ease. The problem comes when my REFRESH token is expired. See when i try to GET or POST to my web API from the client the load and refresh blocks works just fine to keep my credentials updated locally....

How to copy file to android clipboard? I want to pass PDF file to clipboard This is my code val file = File(filesDir, "aaa.pdf") file.createNewFile() val fos = FileOutputStream(file) fos.write(response.body()?.bytes()!!) fos.close() val clipboard = getSystemService(CLIPBOARD_SERVICE) as ClipboardManager val uri = Uri.parse(file.toString()) val clip = ClipData.Item(uri) val clipData = ClipData(ClipDescription("Label", arrayOf(ClipDescription.MIMETYPE_UNKNOWN)), clip) clipboard.setPrimaryClip(clipData)

Fragment backStackEntryCount always returns 0 Code I am using in the Activity: private fun addFragmentToActivity(fragment: Fragment?) { if (fragment == null) return val ft = supportFragmentManager.beginTransaction() ft.replace(R.id.container, fragment) ft.addToBackStack(null) ft.commit() checkForBackStack() } private fun checkForBackStack() { val fm = supportFragmentManager if (fm.backStackEntryCount > 0) { binding.backIV.visible() } else { binding.backIV.gone() } } I want to set...

Below UI screen How to make it using recyclerView in android?